GridSuite v2.32.0

🎯 New Features

Copy Link in GridExplore

• Share element links: Users can now copy a direct link to any element in GridExplore, making it easy to share studies, cases, or filters (#818, #833)

Export Network Modifications as CSV

• Modification export for a node: Users can now export the list of network modifications applied to a given node as a CSV file (#3758, #953)

Temporary Limits in Line Catalog

• Multiple temporary limits per catalog entry: Line catalog entries now support a list of temporary limits, enabling richer limit definitions directly from the catalog (#764, #3739)

Short-Circuit Node Cluster

• Node cluster filtering: Short-circuit analysis now supports node clusters, restricting fault computation to a specific subset of buses, with a fix to ensure only faults present in the cluster are included (#188, #193, #194)

Persist Case via API

• API-driven case persistence: Cases can now be persisted via a dedicated API endpoint, enabling programmatic case ingestion workflows (#175, #819)

Not-Found Elements Count in Contingency Lists

• Missing element visibility: Users can now see how many elements in a contingency list could not be found in the network, directly in the UI (#159, #960, #3773)

Computation Result Filters Notification

• Real-time filter sync: The frontend now receives and handles notifications when computation result filters are updated, keeping the displayed filters in sync across sessions (#961, #3783)

Copy Modification/Node with Cross-Study Applicability

• Cross-study copy support: Modifications and nodes can now be copied between studies with applicability checks based on common root network tags (#946)

Sensitivity Analysis: Equipment Container Names from Directory

• Container name resolution: Sensitivity analysis now resolves equipment container names by querying the directory server, enabling clearer result display (#160)

TapChanger Values by Tap Position

• Indexed tap changer access: TapChanger values are now accessible by tap position index, with the corresponding data exposed in the map server and frontend (#328, #3766)

Ratio/Phase High Tap Position in Formula Modification

• New fields for TWT formulas: RATIO_HIGH_TAP_POSITION and PHASE_HIGH_TAP_POSITION fields added for two-winding transformer formula modifications (#3754)

Exported/Unexported Modifications by Group

• Granular modification visibility: New endpoint to retrieve exported and unexported network modifications filtered by group (#772)

Business Error for Empty Contingency List

• Explicit error feedback: Security analysis now returns a proper business error when the contingency list configuration is empty, rather than silently failing (#227)

Power Balance in SLD Bus Legend

• Bus legend enrichment: Power balance information is now displayed in the SLD bus legend, giving users a quick power summary directly in the diagram (#219)

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🎨 UI/UX Improvements

Bus Colors in Voltage Level Popover

• Voltage-based bus coloring: Buses in the voltage level popover now display colors based on their voltage values, with a fallback voltage used when data is partially available (#3771, #3775, #3791)

Workspace Panel Error Boundary

• Resilient workspace layout: An error boundary is now wrapping workspace panels, preventing a single panel crash from taking down the entire workspace (#3742)

Alert on Workspace Switch with Unsaved Parameters

• Unsaved change warning: Users are now alerted when switching workspaces while having unsaved computation parameter changes (#3781)

Substation Filtering in Global Filters

• Substation as filter scope: Substations can now be used as a filter scope in global filters, in addition to voltage levels (#3780)

Substation Modification Form in Commons-UI

• Shared modification form: The substation modification form is now moved to commons-ui, reused consistently across GridStudy and GridExplore (#3755, #816)

Smoother Panel Drag

• Improved drag UX: Panel dragging in the study interface is now smoother, reducing visual jank during layout adjustments (#3774)

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🔧 Technical Improvements

Global Filters State Management Refactor

• Simplified filter state: Major refactor of the global filters state management to reduce complexity, improve maintainability, and unify the unselectedDate-based sort logic (#3744, #3786)

Fix Cyclic Dependencies

• Module graph cleanup: Resolved cyclic imports across the study app that were causing subtle initialization bugs and blocking future refactors (#3765, #3763)

Tanstack Table for Modification List

• Virtualized modification table: The network modification table is now implemented with Tanstack Table, enabling virtualization and better performance on large modification lists (#3751)

Sensitivity Analysis Async Persisting Refactor

• Readable async logic: Refactored the async result persisting logic in sensitivity analysis server for improved readability and long-term maintainability (#155)

Actions Server: Extract Code to Library

• Shared actions library: Common code extracted from actions server into a dedicated library, reducing duplication (#152, #157)

Remove Separate Provider Endpoints

• Simplified parameter APIs: Dedicated provider endpoints removed from load flow, security analysis, short-circuit, and sensitivity analysis servers; provider is now handled as part of the parameters (#952, #226, #225, #189, #161, #3761)

Move Equipment Type Filter Evaluation to Filter Library

• Centralized filter logic: Equipment type filter evaluation moved to the filter library, reducing duplication across servers (#185)

Network Tree Event Handling Refactor

• Cleaner event management: Refactored network tree event handling for clarity and reduced side effects (#3768)

TypeScript Migration

• Continued TS adoption: By-formula dialog and load dialog header/tabs migrated to TypeScript (#3753, #3778)

Report Duplication Optimization

• Faster report copy: Optimized the report duplication process to reduce overhead when copying studies with large report histories (#144)

Filter Library: Bus IDs from VL Filters

• New filter endpoint: Added an endpoint to retrieve bus IDs matching voltage level filters, supporting finer-grained network queries (#190)

UserId Header on Sensitivity Parameter Endpoints

• Audit trail: User ID is now passed as a header on sensitivity analysis parameter endpoints for improved traceability (#948, #962)

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🐛 Bug Fixes

• **LimitSet update regressi...

GridSuite v2.31.0

🎯 New Features

Dynamic Margin Calculation (DMC)

• New DMC computation: Dynamic Margin Calculation is now available as a full computation in GridSuite, accessible from the study interface and routed through the gateway (#910, #3669, #160)

Persist Computation Result Filters

• Saved result filters: Filters applied on computation results (load flow, security analysis, etc.) are now persisted per user, so they are restored on next session (#3484, #97, #884)

Contingency Lists in Security Analysis Parameters

• SA-embedded contingency lists: Contingency lists are now managed as part of the security analysis parameters, removing the need for separate configuration (#220, #3711, #934)

Short-Circuit: PowerElectronicsCluster Parameter

• New specific parameter: Short-circuit analysis now supports the PowerElectronicsCluster specific parameter for more precise computation configuration (#180)

Short-Circuit CSV Export with Sort & Filters

• Configurable CSV export: Short-circuit results CSV export now supports sort and filter configuration, consistent with the security analysis export (#181, #923, #3695)

Named Composite Modifications

• Name field on composite modifications: Composite modifications now have a name, and the composite creation endpoint has been updated accordingly. A new INSERT_COMPOSITE action type has been added (#762, #933, #3732, #757)

Configurable Upload File Size Limit

• Admin-configurable upload size: The maximum file upload size in the explorer is now configurable via apps-metadata (#811, #594)

Regulation Type in Spreadsheet Prefill

• RegulationType column in prefilled config: Generator regulation type is now available as a prefilled column in the spreadsheet configuration (#3719, #324)

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🎨 UI/UX Improvements

Substation Creation Form in Commons-UI

• Shared creation form: The substation creation form has been moved to commons-ui and is now reused across GridStudy and GridExplore composite modifications, ensuring consistency (#3715, #806)

Adaptive Text Zoom in NAD

• Dynamic label scaling: NAD now supports adaptive text zoom, keeping labels readable at various zoom levels (#3747)

Pagination Reset on Global Filter Change

• Consistent pagination: Changing a global filter now automatically resets the page to the first one, avoiding empty result pages (#3725)

CSV Copy Separator

• Customizable copy separator: Updated the copy CSV label and adapted the separator behavior to align with commons-ui changes (#3745)

Planned Active Power Set Point Validation

• Input check: Added a validation check on the planned active power set point field to prevent invalid entries (#3713)

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🔧 Technical Improvements

Redux Refactor: Remove studyUpdated

• Cleaner state management: Removed the studyUpdated field from the Redux reducer, reducing unnecessary re-renders and simplifying the state shape (#3687)

TypeScript Migration

• Continued TS adoption across modification dialogs:
  • Two-winding transformer creation (#3662)
  • Equipment deletion (#3671)
  • Shunt compensator creation (#3619)
  • Shunt compensator modification (#3622)

Error Management Migration

• Unified error handling: Case server and SLD server migrated to the new harmonized error management system (#137, #199)

SLD: Voltage Config from Server Config

• Configuration-driven voltage colors: SLD server now reads voltage configuration from its own server config instead of the request body, simplifying client calls (#207)

RabbitMQ Load Balancing for Load Flow

• Improved message distribution: Load flow server now uses RabbitMQ message load balancing for better throughput under concurrent computation requests (#222)

Docker Compose Refactor

• Modular compose setup: Docker Compose configuration refactored to use include directives, simplifying local deployment and usage from arbitrary locations (#596, #597)

Test Infrastructure: WireMock Migration

• Reliable integration tests: Study server sensitivity and short-circuit integration tests migrated from MockWebServer to WireMockServer for better test stability (#925, #927)

Modification by Formula JSON

• Updated payload format: Changed the JSON structure sent to the backend for modification-by-formula operations for better consistency (#3714)

Security Analysis: acceptableDuration Null Handling

• Cleaner SA parameters: acceptableDuration is now stored as null instead of Integer.MAX_VALUE when not set, avoiding confusion in parameter display (#221)

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🐛 Bug Fixes

• Enum value on computation result column filters: Fixed incorrect enum values used in column filters for computation results, causing filter mismatches (#3723)
• Short-circuit one-bus CSV export: Fixed broken CSV export for single-bus short-circuit results (#183)
• Diagram fetch race condition: Fixed a race condition when fetching multiple diagrams simultaneously (#3730)
• Charging status for SA and limit violation results: Fixed incorrect charging status shown in security analysis and limit violations tabs (#3738)
• NAD edit mode performance: Fixed performance degradation when editing in NAD mode (#3694)
• Report viewer fetch count: Fixed incorrect fetch count displayed in the report viewer (#3740)
• Buses cleanup on voltage level deletion: Fixed spreadsheet buses not being cleaned up when a voltage level is deleted (#3736)
• Global filter for paged sensitivity results: Fixed global filter not being applied correctly on paged sensitivity analysis results (#3724)
• SVC creation by copy: Fixed missing fields when creating a static VAR compensator by copy (#3720)
• NAD arrow CSS class: Fixed incorrect CSS class applied to NAD arrows (#3731)
• Undefined node status for unbuilt nodes: Fixed undefined node status not correctly handled for unbuilt nodes (#3728)
• maxSusceptance value: Fixed incorrect maxSusceptance value in shunt compensator forms (#3718)
• Copy column filter: Fixed filter not being correctly copied in spreadsheet configuration (#100)
• JsonProperty for shunt compensator fields: Fixed missing @JsonProperty annotations for qAtNominalV and bPerSection in network map server (#323)
• Redux typing errors on initialState: Fixed TypeScript typing errors in Redux initial state definitions (#3688)
• Diagram error handling adaptation: Fixed diagram components not adapting correctly to the new error handling setup ([#3667](https://github.com/gridsu...

GridSuite v2.30.0

🎯 New Features

Workspace Backend Persistence

• Workspaces saved server-side: Study workspaces configuration is now persisted in the backend, enabling users to retrieve their workspace layout across sessions and devices. Workspaces can be saved, replaced, and initialized from user profiles (#3629, #3684, #86, #94, #96, #901, #919, #91, #161, #804)

Export Network to GridExplore

• Direct network export from study: Users can now export a network file directly to GridExplore from within the study interface (#902, #3553, #921)

Security Analysis CSV Export with Sort & Filters

• Configurable CSV export for SA results: Security analysis CSV exports now support sort and filter configuration, giving users control over the exported content (#213, #922, #3696)

Security Analysis Result Endpoints

• Save SA results without network enrichment: New endpoint to persist security analysis results without re-fetching data from the network, improving performance on large studies (#215)
• Unpaged NMK results: New endpoint to retrieve all N-k security analysis results without pagination (#217)

Case Import from S3 Directory

• Batch S3 case import: New endpoint to import a case directly from an S3 directory path, enabling smoother cloud-native workflows (#143)

Security Node Auto-Rebuild

• Automatic node rebuild after multiple operations: Security nodes are now automatically rebuilt following bulk operations, keeping study results consistent without manual intervention (#908)

PCC Min Server Integration

• PCC Min computation available: Gateway and explorer now expose the PCC Min server, with parameter persistence (#152, #787, #167)

Shunt Compensator Bus Columns in Spreadsheet

• New spreadsheet columns: Shunt compensator bus data is now included in the network map spreadsheet view (#322)

Directory Permission Check

• Access control on directory operations: Study server now verifies directory permissions before allowing operations, preventing unauthorized access (#924)

Monitoring: Dashboards & Alerts Provisioning

• Observability stack: Grafana dashboards and alerting rules are now provisioned as part of the deployment, enabling out-of-the-box monitoring of GridSuite services (#52, #577, #581)

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🎨 UI/UX Improvements

Diagram Panels UI Enhancements

• Refined diagram panel controls: Visual and interaction improvements to the diagram panels for a cleaner study experience (#3702)

Virtualized NAD Voltage Level Search

• Performant VL search menu: The voltage level search menu in NAD is now virtualized, ensuring smooth rendering even with large networks (#3686)

Global Filters Sorted by Categories

• Categorized filter display: Selected global filters are now grouped and sorted by category for easier navigation (#3664)

Error Feedback Harmonization

• Consistent error snackbars: Error notifications harmonized across GridExplore and GridStudy to use a unified snacking system (#803, #797)

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🔧 Technical Improvements

TypeScript Migration

• Continued TS adoption: Further migration of modification dialogs and network components to TypeScript:
  • VSC creation dialog (#3678)
  • Line creation (#3653, #3679, #3681)
  • Tap changer components (#3651)
  • Line attach to voltage level (#3648)
  • Substation creation/modification (#3645)
  • Attaching lines to splitting lines (#3643)

Error Handling Harmonization (Backend)

• Unified exception management: Directory server, explore server, study-config server, and network conversion server migrated to the new error management system (#230, #169, #85, #236)

powsybl-dependencies v2025.3.0

• Core library update: All servers upgraded to powsybl-dependencies v2025.3.0 (network-modification-server #753, network-store-server #167, loadflow-server #219, and others)

Network Conversion Export Improvements

• Export to S3 with ZIP support: Network conversion now supports zipping exports and handles names containing /; export directory path and content type are included in finished notifications (#245, #239, #246)

Network Modification: Network Store Decoupling

• Independent library version: Network modification server now uses the network store independent version of the network-modification library (#755)

Sensitivity Analysis Writer Fix

• Prevent thread hang on early writer exit: Fixed a hang in the finished computation thread when writer threads had exited early (#151)

SpringBoot HTTP Compression

• Compressed HTTP responses: HTTP compression enabled in SpringBoot across services to reduce bandwidth (#579)

Workspace Notification Header

• Workspace UUID in notifications: Study notification messages now include a workspace UUID header for better client-side routing (#116)

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🐛 Bug Fixes

• VL desynchronization in map menu: Fixed a desynchronization between the displayed voltage level and the checked one in the map's contextual menu (#3658)
• Equipment deletion dialog not opening: Fixed the modification dialog not opening on equipment deletion in certain scenarios (#3676)
• Fitview button in tree panel: Fixed the fitview button not working correctly in the study tree panel (#3659)
• Busbar section reset in connectivity: Fixed busbar section being incorrectly reset when editing connectivity (#3655)
• Line attach to voltage level: Fixed incorrect behavior when attaching a line to a voltage level (#3661)
• Export failed snackbar: Fixed the export failure notification not appearing in some cases (#3697)
• Description button color: Fixed the color of the description button in the study app and GridExplore (#3699, #810)
• Case download attachment name: Fixed missing attachment name in the case download response header (#147)
• Fix package-lock for Node.js 24: Resolved package-lock inconsistencies introduced by the Node.js 24 upgrade (#3675, #801)
• Properties validation edge case: Fixed a validation ...

GridSuite v2.29.0

🎯 New Features

Export Model & Collection Parameters

• Parameterized model/collection export: Users can now pass additional parameters when exporting a model or collection, giving finer control over the exported content (#3601)

User Identity Enrichment

• Full name display for users: User identities are now enriched with full name information, visible in the admin interface (#88, #153)

Sensitivity Analysis Factor Count

• Factor count endpoint with sensitivity parameters: Sensitivity analysis now uses dedicated parameters to compute analysis factor count, with business error handling when the count exceeds limits (#147, #148, #898)

Contingency Count by Group

• New contingency count endpoint: Added an endpoint to count contingencies by group, enabling better monitoring of contingency lists (#150)

Global Filter Voltage Range Support

• Min/max voltage range in global filters: Global filters now support voltage range fields (min/max), with matching UI and backend support (#90, #183, #3626)

Copy Node UUID

• Node UUID copy to clipboard: Users can now copy a node's UUID directly from the study interface (#3638)

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🎨 UI/UX Improvements

Global Filters UI Clarification

• Clearer filter interface: Reworked the global filters UI for better readability and usability, including a delete button on generic filter autocomplete chips (#3616, #3628)

MUI X v7 → v8 Migration

• Updated data grid components: Migrated MUI X from v7 to v8 across the study and explorer apps, bringing improved table performance and new component APIs (#3545, #784)

Temporary Limits Operation Type

• OperationType support for temporary limits: Temporary limits now carry an operation type, improving edit/delete granularity in the UI (#3551, #744)

Spreadsheet Config Sorting

• Consistent column ordering: Spreadsheet configuration sorting is now applied uniformly, ensuring a predictable column order across sessions (#87, #903)

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🔧 Technical Improvements

Case Server: Remove File System Storage

• Cloud-native storage only: Removed local file system storage from the case server, enforcing object storage as the sole backend (#141, #575, #578)

Export Network File Rework

• Unified export endpoint: Reworked the network file export flow in the study server, with the frontend now fetching directly from the study server (#899, #3577)

TypeScript Migration

• Incremental TS adoption: Multiple modification dialogs and components migrated to TypeScript for improved type safety:
  • Voltage level creation/modification (#3636)
  • Generation dispatch modification (#3633)
  • Create-rule dialog (#3644)
  • Delete attaching line (#3639)
  • Line split with voltage level (#3631)
  • Generator scaling (#3621)
  • Delete voltage level on line (#3632)
  • Create switches between sections (#3640)
  • Load scaling (#3618)

Node.js 24 (Krypton) Upgrade

• Runtime update: All frontend applications updated to Node.js 24 Krypton (#3620, #790, #154)

Filter Server — POST-based Count

• POST mapping for filter count: Filter count endpoint migrated to POST to support larger filter payloads and deduplicate identifiables (#180)

Geo-Data Error Management Migration

• Unified error handling: Geo-data server migrated to the new error management system (#170)

Limits Attribute Name Synchronization

• Consistent naming across layers: Attribute names for network limits synchronized between network modification server and frontend (#748)

Spreadsheet Global Filter Schema Migration

• Renamed filter field: spreadsheet_global_filter migrated to substationOrVoltageLevel for clearer semantics (#91)

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🐛 Bug Fixes

• Line creation attribute names: Fixed incorrect attribute names used during line creation, causing silent data issues (#3574)
• Mvar and min labels: Corrected mislabeled Mvar and min fields across study app, study-config-server, study-server, and voltage-init-server (#3602, #89, #904, #135)
• Voltage level contextual menu in NAD: Fixed contextual menu not appearing correctly on voltage levels in NAD (#3625)
• Progress bar hidden in limit violations tab: Fixed the progress bar not showing in limit violations and log tabs for load flow results (#3604)
• Selected operational limits group ID: Fixed incorrect handling of selectedOperationalLimitsGroupId in the network map server (#319)
• Download case file extension: Fixed missing or incorrect file extension in the download case response header (#140)
• Null result UUID on computation failure: Study server no longer inserts a null result UUID when a computation fails (#906)
• Missing properties in line split with VL: Fixed missing voltage level properties when creating a VL inside a line split modification (#3637)
• Properties validation: Fixed edge case in properties validation form (#3641)
• Low voltages hidden in NAD at zoom out: Fixed low voltage elements remaining visible when zoomed out in NAD (#3617)
• Dynamic simulation curve checkbox styling: Fixed checkbox tree view and model filter styling in dynamic simulation (#3624)
• Default precision on tap changer rule generation: Applied correct default precision when generating tap changer rules (#3650)
• Generation dispatch form label: Removed unnecessary label and fixed error message display in the generation dispatch form (#3646)

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🧹 Cleanup & Deprecations

• Remove unused fetch calls: Cleaned up dead fetch code in the study app (#3607)
• Remove SLD Middle2WT decorator: Removed obsolete decorator for Middle2WTNode in the SLD server (#202)
• Deployment: remove file system storage config: Cleaned up file system storage configuration from deployment manifests (#575)
• Add ingress for gateway: Added missing ingress configuration for the gateway service (#573)

GridSuite v2.28.0

🎯 New Features

NAD & SLD Association

• NAD/SLD diagram linking: Users can now associate Network Area Diagrams (NAD) with Single-Line Diagrams (SLD), enabling seamless navigation between both views (#3556)

Short-Circuit Specific Parameters

• Per-analysis short-circuit parameters: Dedicated parameter management for short-circuit computations, configurable directly from the study and explorer interfaces (#163, #772, #3443)

Custom Base Voltages

• Configurable base voltages: Users can define custom base voltage levels, stored in configuration and applied to SLD, NAD, and network map coloring (#185, #868, #568, #3435, #3579)

Enhanced Prefilled Model Generation

• Smarter tabular modification prefilling: Improved model generation with filter support, NAD config integration and removal of "Select All" for clarity (#3563, #3489, #193)

Load Flow Status Enrichment

• Extended load flow result tab: New metrics and richer status information are now displayed in the load flow results panel (#212, #3530, #3611)

Unbuild All Nodes

• Bulk node unbuilding: New button and endpoint to unbuild all nodes across all root networks of a study in one action (#900, #3581)

Network Modification Description

• Description field on modifications: Network modifications now support a description field for better traceability (#743, #894, #3546)

Attachment Point Enhancement

• Detailed attachment point on line-to-VL: Users can now specify attachment point details when connecting a line to a voltage level (#3525, #739)

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🎨 UI/UX Improvements

Rich Equipment Tooltips

• Line & transformer tooltips: Hovering over lines and two-winding transformers in the map now shows key electrical parameters (#3534, #310)
• Generator tooltip: Generator data is now accessible via tooltip in the network map (#3564, #315)
• Load tooltip: Load information exposed as tooltip (#3562, #312)
• Voltage level tooltip in NAD: Voltage level details now appear on hover in NAD (#3570, #313)

SLD Legend Redesign

• Legend as table with voltage level info: SLD legend is now displayed as a structured table, including voltage level details (#198, #188, #3569)

Responsive Panels Layout

• Adaptive panel layout: Study panels now respond dynamically to screen size changes for a better experience on various resolutions (#3549, #3533)

Permission-Aware Editing

• Read-only mode in explorer: Elements can no longer be edited when the user lacks write permission (#778)

Equipment Search Ordering

• User-input-first results: Equipment search now prioritizes results that start with the user's input, then sorts by type and alphabetically (#886)

Spreadsheet Improvements

• Filter empty column values: Empty values in spreadsheet columns can now be filtered out (#3567)
• Formula edition dialog layout: Improved layout for the spreadsheet formula edition dialog (#3593, #3608)
• Enhanced contingency list panel: Contingency list by filter panel now resizes correctly at breakpoints (#775, #779)

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🔧 Technical Improvements

Operational Limits by Name

• Limits group access by name: Temporary limit data is now accessed by name rather than index, with spreadsheet initialization aligned accordingly (#309, #317)

Context Propagation

• Async executor context passing: Proper request context propagation within executor services across conversion, SLD, geo-data, and study servers (#226, #190, #168, #885, #893)

Exception Handling Harmonization

• Unified error responses: Harmonized exception handling across short-circuit, voltage-init, sensitivity-analysis, security-analysis, and load-flow servers (#170, #129, #143, #208, #209)

Network Elements Retrieval by Global Filter

• New filter-based endpoint: Study server exposes a new endpoint to retrieve network element infos using global filters (#897, #316)

Form Migration to React Hook Form

• Export case dialog modernization: Export case dialog migrated to React Hook Form for improved validation and performance (#3543)

SpringBoot 3.5.6 Upgrade

• Backend dependency bump: All backend servers upgraded to SpringBoot 3.5.6 (filter-server #176, directory-server #224, explore-server #163, user-admin-server #86, and others)

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🐛 Bug Fixes

• Copy-paste in workspaces: Fixed inconsistent copy-paste behavior across study workspaces (#3584)
• SA/SE/VI computation status: Fixed incorrect status and result invalidation when resetting parameters to profile origin (#895)
• Saved NAD config cleanup: Fixed stale NAD configuration not being properly cleaned up on save (#3529)
• CSV export language injection: Prevented sys from being passed as a language parameter in CSV exports (#3571)
• Prefilled model in tabular modification: Fixed generation of prefilled models in tabular modification mode (#3576)
• Global filter subtype on collection duplicate: Fixed subtype not being copied when duplicating a filter collection (#83)
• Load flow status computed values: Fixed incorrect computed values in some load flow status entries (#216)
• Attachment point creation dialog: Fixed layout and validation issues in the attachment point dialog (#3594)
• Max built nodes error display: Fixed error message display when the maximum number of built nodes is exceeded (#3494)
• Shunt compensator validation: Fixed validation button being incorrectly disabled in shunt compensator creation dialog (#3613)
• Disconnected colors consistency: Unified disconnected equipment colors between SLD and NAD (#3554)

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🧹 Cleanup & De...

GridSuite v2.27.0

🎯 New Features

Study Navigation & Workspace

• Workspaces UI: Major redesign of the workspace interface with improved layout management and user experience (#3480)
• SLD navigation system: New navigation system for single line diagrams enabling easier movement between voltage levels and network elements (#3501)
• Network Analysis Diagram (NAD) configuration management: Added support for saving and managing NAD configurations, allowing users to preserve their custom network visualization settings (#879, #3519)
• Workspace panel persistence: Workspace panels now preserve their positions and sizes when closed, making it easier to restore your preferred layout (#3511)
• NAD voltage level locator: Added ability to search and locate specific voltage levels within NAD (#3455, #3458)

Single Line Diagram Enhancements

• Short-circuit current (ICC) display in SLD legends: Voltage level single line diagrams now display ICC values in their legends when short-circuit computations have been run, providing critical fault analysis information directly in the visualization (#189, #881, #171, #3473)

Access Control

• Write permission enforcement: Studies in read-only directories are now protected - users without write permission cannot open studies for modification, preventing accidental changes to protected content (#768, #3485)

Results & Analysis

• Enhanced CSV export with sorting: CSV result exports now support sorting and filtering without pagination constraints (#882, #3477)

Spreadsheet Features

• Copy to clipboard: Added option to copy spreadsheet content as CSV directly to system clipboard (#3454)
• Formula editing improvements: Field selection from tree view now inserts at cursor position when editing spreadsheet formulas (#3469)
• Formula error display: Added proper error handling and display for invalid formulas with localized error messages (#3439)

Network Modifications

• Import parameters in root network creation: Import parameters can now be modified when creating root networks (#3466)
• Cut-paste harmonization: Improved clipboard behavior for nodes and network modifications across multiple open studies (#3468)
• Operational limits groups management: Enhanced UI for managing operational limits groups with contextual menus and improved validation (#3467, #3427, #3460)

Report Management

• Advanced report inheritance system: Implemented robust report management that properly handles report inheritance across node trees, prevents premature deletion, and supports report reuse (#878, #728, #136)

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🎨 UI/UX Improvements

Contingency List Management

• Resizable contingency list form: Contingency list filter-based forms now use resizable panels with responsive layouts for better space utilization (#769)
• Equipment type labels: Updated filter chips to use improved equipment type labels for better clarity (#766, #762)

Workspace Enhancements

• Workspace styling improvements: Visual refinements to workspace interface for improved aesthetics and usability (#3521)
• Panel corner resize handles: Enhanced panel resize handles for more intuitive window management (#3513)
• Parameters panel close confirmation: Added confirmation dialog when closing the parameters panel to prevent accidental loss of unsaved changes (#3508)

Visualization

• Diagram viewbox preservation: Single line diagrams now maintain their zoom and pan position when updating (#3499)
• SLD legend visibility: Fixed bottom padding in SLD legends to ensure all content is visible in the default viewbox (#194)
• NAD hover popup fix: Fixed issue where hover popups would not disappear when right-clicking on NAD elements (#3432)

Operational Limits UI

• Enhanced error visibility: Added error icons next to operational limits groups without limits for better validation feedback (#3460)
• Contextual menu: Right-click contextual menu for operational limits with delete, duplicate, and rename options (#3427)
• Improved naming interface: Enhanced UI for editing operational limits group names with better validation (#3467)

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🔧 Technical Improvements

Framework Upgrades

• React 19 upgrade: Major upgrade to React 19 across all frontend applications (#745, #3491, #142)
• PowSyBl dependencies 2025.2.0: Updated to the latest PowSyBl framework version across all backend services

Performance & Architecture

• Indexation complexity reduction: Simplified and optimized network element indexation logic, reducing object creation and storage overhead (#732)
• Modification application refactoring: Refactored to use DTOs throughout the modification application pipeline for better transaction management (#731)
• Filter library integration: Unified results filtering logic across computation servers using shared filter library code (#208, #206, #142, #168, #128)

REST Template Standardization

• Spring Boot managed RestTemplate: Migrated to Spring Boot managed RestTemplate across all services for better configuration management and HTTP client consistency (multiple PRs: #145, #220, #159, #172, #204, #202, #724, #139, #164, #125, #47, #84)

Error Handling

• Improved exception handling: Implemented standardized error handling with business exception framework and reduced unnecessary error wrapping (#871, #872, #873, #3452)
• Cyclic filter detection: Enhanced filter error messages to include filter names involved in cycles for better debugging (#177)

Code Quality

• Test suite improvements: Split large test classes into focused, maintainable units for better test organization (#877)
• Component refactoring: Extracted reusable components and simplified complex component logic (#3488, #3496, #3449)

Operational Improvements

• Blocking supervision endpoints: Made node invalidation endpoints blocking for better deployment script reliability (#888)

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🐛 Bug Fixes

Data Integrity

• Variant deletion race condition: Fixed critical issue where deleting and recreating variants in rapid succession could cause data corruption (#159)
• Operational limits groups query: Fixed exception when querying operational limits groups for lines without selected groups (#160)
• HVDC converter station indexation: Corrected indexation to use specific HVDC converter station...

GridSuite v2.26.0

🎯 New Features

Asynchronous Network Export & Case Conversion

• Async Export/Conversion: Network exports and case conversions are now performed asynchronously with S3 storage support for result files (#201, #849, #743)

Enhanced SLD Legend

• Generator & Load Values: Added sum of load and production P values to single-line diagram legend (#182, #3421)

Network Topology

• Topology Endpoint: Refactored topology information handling and created new dedicated endpoint (#298, #857)

Limits Management

• Operational Limits Groups: Added Limits properties support for two-winding transformers, lines, and operational limits groups (#295, #704, #717)

Battery Short-Circuit Fields

• Battery Modifications: Added TRANSIENT_REACTANCE and STEP_UP_TRANSFORMER_REACTANCE to modify by filter and by formula for batteries (#3437)

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🎨 UI/UX Improvements

Modification Search Grouping

• Grouped Results: Network modifications search results are now grouped by modification ID for better readability (#719, #3417, #3436)

Export Success Notifications

• Success Snackbar: Replaced info notifications with success notifications for completed export operations (#757, #3451)

Directory Owner Display

• Owner Identity: Directory owner identity is now displayed in properties dialog and tooltips (#756, #753)

Limit Set UI

• UI Improvements: Enhanced UI around the limit set switch for better user experience (#3413)

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🔧 Technical Improvements

Error Handling

• Standardized Exceptions: Implemented consistent exception handling across multiple servers (#213, #155, #170, #78, #744)
• Business Errors: Added proper snackbar notifications for backend business errors (#744)

Spring Boot 3.4.9 Migration

• Framework Upgrade: Migrated all backend services to Spring Boot 3.4.9 with ReactorHttpClient regression fixes (Multiple PRs across repositories including #147, #708)
• HTTP Client Configuration: Added managed RestTemplate support with configurable SimpleClientHttpRequestFactory to address hangs (#55, #92, #219)

Resource Optimization

• CPU & Memory Sizing: Comprehensive adjustment of CPU and RAM requests/limits for all deployments with new template system (#554, #560, #562, #563, #565, #566)

Database Performance

• Connection Pool: Increased Hikari maximumPoolSize from 10 to 20 for better performance (#164, #178)
• Index Optimization: Added indexes on start_date and end_date columns in announcement table (#82)

Async Request Handling

• Servlet 3.0+ AsyncContext: Import/export operations no longer block Tomcat threads (#695)

Data Model Improvements

• UUID Primary Key: Added UUID primary key to EquipmentTypesByFilterIdEntity (#142)
• Single Entity Model: Unified tabular modifications to use a single entity (#696)

User Profile Handling

• Default Profile: User admin now returns default profile with default configuration instead of 404 when profile not found (#157, #80, #861)

Native Image Support

• GraalVM Metadata: Added Liquibase metadata for native image compilation (#219)
• Base Image: Switched to builder-jammy-base for native image builds (#225)

Development Tools

• Vite 7 Upgrade: Upgraded ViteJS to version 7 (#141, #742)
• ESLint & TypeScript: Upgraded ESLint, TypeScript, and Prettier with Airbnb style guide (#145, #146, #749, #752, #3412, #3418)

Permissions

• Scope Separation: Properly separated permission scope from directory scope (#222)
• Admin Bypasses: Added admin explore read permission bypasses (#218)

Filter Validation

• Voltage Init Filters: Added validation for filters in voltage initialization parameters (#123, #122)
• Generation Dispatch: Added logging for filters not found in generation dispatch (#720)

Move Feeder Enhancement

• Improved Workflow: Enhanced move feeder functionality with better handling (#3416)

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🐛 Bug Fixes

• Spreadsheet CSV Export: Fixed exclusion of empty calculation lines from export (#3440)
• Spreadsheet Filter Application: Prevented filter application on unbuilt nodes (#3431)
• Spreadsheet Model Import: Fixed column filters not being passed during import (#3434)
• Spreadsheet Button Disabling: Fixed toolbar button state when node is not built (#3445)
• Modification Double Request: Fixed duplicate requests when editing with double-click (#3426)
• Formula Editor: Removed double-click variable insertion in formula editor (#3425)
• Formula Length Validation: Limited spreadsheet column formula to 1000 characters (#3429)
• Tabular Modification Optimization: Reverted optimization when moving or loading modifications (#718, #712)
• Reactive Limits Form: Fixed validation and empty field handling (#3444)
• Min/Max Control: Fixed validation for voltage levels and active power limits (#3424)
• Connection Position Check: Replaced blocking check with warning for duplicate positions (#3423)
• Direct Study Creation: Fixed element not found error when creating study without case conversion (#158)
• Voltage Init Preview: Fixed preview button functionality (#3414)
• Generation Dispatch Substation: Enabled free substation ID input (#3422)
• Generation Dispatch Filters: Added filter translations for proper label display (#3420)
• **Securit...

GridSuite v2.25.0

🎯 New Features

Filter & Contingency Management

• Enhanced Filter-Based Contingency Lists: Added support for filtering by substation or voltage level with selected equipment types (#140, #169, #741, #858)

Network Modifications

• Cross-Study Copy/Paste: Network modifications can now be copied and pasted between different studies (#3357, #3382, #856)
• Move Feeder Bays Enhancement: Improved feeder bay movement with support for duplicated feeder IDs for internal branches (#3368, #3391, #301)
• Modification Menu Refactor: Streamlined modification menu for better usability (#3388)

Battery Short-Circuit Support

• Battery Short-Circuit Properties: Added support for battery short-circuit information in forms, creation, and modification workflows (#297, #698)

Operational Limits Groups Management

• Enhanced Limits Groups: Added limits group properties and improved edition for lines and transformers (#3363, #3371, #3392)
• Operational Limits Groups Switch: Added support for editing operational limits groups (#691)

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🎨 UI/UX Improvements

Map Enhancements

• Fixed Map Initial Position: Resolved issues with map positioning on load (#3398)
• Voltage Level Aggregation: Improved nominal voltage filter with aggregated voltage levels (#3387)
• Disabled Tilt & Rotation: Disabled map tilt and rotation interactions for better user experience (#3355)

Single Line Diagram (SLD) Improvements

• SLD Navigation: Reuse the same SLD when navigating voltage levels, or use CTRL to open a new one (#3359)
• Transformer Arrow Style: Updated phase shift transformer arrow style in NAD and SLD (#3354)
• Fixed Transformer Interactions: Removed unintended node bolding on transformer circle hover (#3383)
• Network Viewer Update: Upgraded to powsybl-network-viewer 2.0.0 (#3394)
• NAD Viewbox Fix: Fixed viewbox issues in NAD (#3372)

Spreadsheet Enhancements

• Update Performance: Improved spreadsheet updates on large modifications (#3360)

Other UI Improvements

• Formula Fields Aid: Various enhancements to formula fields assistance (#3377)
• Tooltip Persistence Fix: Fixed tooltip persistence issues (#3362)
• Disabled Icons: Properly disable icons for root nodes (#3361)
• Diagram Focus: Added focus functionality on opened diagrams (#3366)
• Contingency List Padding: Improved padding in contingency list by filter (#735)

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🔧 Technical Improvements

Performance & Architecture

• Async Processing: No longer block Tomcat threads when waiting for geodata (Servlet 3.0+ AsyncContext) (#162)
• Modification Transactions: Split long-running transactions for better performance (#690)
• Thread Pool Optimization: Use bounded thread pool for large modifications (#692)
• Tabular Modifications: Unified entity handling for tabular modifications (#696)
• Transaction Management: Improved remote data deletion without aborting transactions (#838)

Dependencies & Libraries

• Jest v30: Upgraded to Jest version 30 (#135, #727)
• UUID v13: Upgraded UUID library to version 13.0.0 (#134, #722)

Code Quality

• API Refactoring: Refactored API utility functions (#143, #3395, #746)
• Error Handling: Improved error handling throughout applications (#738, #3390)
• Exception Messages: Replaced TODO exception messages with detailed descriptions (#299, #699)
• Sonar Fixes: Node.js built-in modules now use "node:" protocol (#138, #731)
• Permissions: Homogenized permissions checks (#215)

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🐛 Bug Fixes

• Switch Updates in SLD: Fixed error handling for switch updates (#3390)
• Voltage Level Creation: Added default country for new substations in voltage level creation (#3370)
• By Filter Modification: Fixed issues with by filter modification (#3367)
• Move Feeder Bays Label: Fixed label issues (#3374)
• Busbar Section Retrieval: Enhanced busbar sections retrieval (#294)
• Indexed Modifications: Fixed update issues with indexed modifications (#697)
• User Profile Handling: Improved handling when user profile is not found (#157, #80, #861)
• Row Counter Fix: Fixed stale display issues in spreadsheet row counter (#3381)
• Buses Tab Fix: Resolved spreadsheet update issues on buses tab (#3378)
• Column Management: Fixed column toggle and lock handlers (#3384)

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🧹 Cleanup & Deprecations

• Non-Evacuated Energy: Removed non-evacuated energy computation (#543, #150, #854, #135)
• React-Ace Components: Removed unused react-ace components (#729)
• SVGO Package: Removed svgo package (#139, #733)
• LintOnStart: Removed lintOnStart from Vite config (#140, #736)
• Logging: Changed to debug logging for directory server exceptions (#212)
• Map Layout Cleanup: Deleted entries in map_layout_entity table (#76)