SanPen/GridCal
Nov 2024 – Sep 2025
9 Months active
Languages Used
PythonCythonJavaScriptNumPyNumbaNumpyPandasSciPy
Technical Skills
Backend DevelopmentLinear AlgebraNumerical AnalysisNumerical MethodsOptimizationPower Systems Analysis
Carlos-Alegre
PROFILE
Carlos-alegre
Carlos Alegre developed and maintained core features for the SanPen/GridCal repository, focusing on power systems simulation and optimization workflows. Over nine months, he engineered robust AC Optimal Power Flow (OPF) enhancements, improved grid modeling UI, and strengthened data handling for renewable integration. His work included refactoring backend Python code for maintainability, implementing advanced numerical methods with NumPy and SciPy, and expanding test coverage to ensure solver reliability. Carlos addressed complex issues such as matrix sizing, device initialization, and user interface consistency, resulting in more accurate simulations and streamlined workflows. His contributions demonstrated technical depth and a strong focus on reliability.
Overall Statistics
Feature vs Bugs
56%Features
Repository Contributions
141Total
Bugs
28
Commits
141
Features
35
Lines of code
280,453
Activity Months9
Your Network
23 people
Work History
September 2025
3 Commits
Sep 1, 2025September 2025 focused on stabilizing AC OPF for GridCal to support planning with higher renewable penetration. Key fixes corrected initialization and matrix sizing for mixed generation including non-dispatchable generators, and addressed interactions between shunts and Q limits to align dimensions and solver behavior. These changes improve result reliability, solver robustness, and readiness for deployment in renewable-rich grids.
3 Commits
Sep 1, 2025September 2025 focused on stabilizing AC OPF for GridCal to support planning with higher renewable penetration. Key fixes corrected initialization and matrix sizing for mixed generation including non-dispatchable generators, and addressed interactions between shunts and Q limits to align dimensions and solver behavior. These changes improve result reliability, solver robustness, and readiness for deployment in renewable-rich grids.
September 2025
July 2025
8 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for SanPen/GridCal: Delivered core AC OPF initialization and accuracy enhancements and robust impedance computation with GUI improvements. Achieved improved solver reliability, easier testing, and clearer impedance visualization, driving better decision support for grid operations.
July 2025
8 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for SanPen/GridCal: Delivered core AC OPF initialization and accuracy enhancements and robust impedance computation with GUI improvements. Achieved improved solver reliability, easier testing, and clearer impedance visualization, driving better decision support for grid operations.
May 2025
8 Commits • 3 Features
May 1, 2025May 2025 monthly summary for SanPen/GridCal focusing on delivering maintainable, high-value improvements to the grid modeling UI and map interactions. The month emphasized performance, stability, and a cohesive UX for map element management, while preserving visual quality and consistency across the grid map components.
8 Commits • 3 Features
May 1, 2025May 2025 monthly summary for SanPen/GridCal focusing on delivering maintainable, high-value improvements to the grid modeling UI and map interactions. The month emphasized performance, stability, and a cohesive UX for map element management, while preserving visual quality and consistency across the grid map components.
May 2025
April 2025
40 Commits • 13 Features
Apr 1, 2025April 2025 monthly summary for SanPen/GridCal: Delivered major feature enhancements, stability improvements, and workflow optimizations for grid modeling and substations. Key features include enhanced region substation line plotting (now renders all region substations, including those without buses), strengthened substation merge workflows with unification options for OV buses and VL and expanded merge button capabilities, and new coordinate management tools that streamline map-to-database synchronization. Introduced the ability to transform a line waypoint into a substation (splitting lines and routing connections) and on-demand line length recalculation using API coordinates to ensure geometric integrity. Also added UI and workflow refinements (diagram reset controls, consolidate object coordinates, and merge-selected lines) to improve usability and reduce manual corrections. Addressed critical bugs affecting visualization, calculation accuracy, and data integrity, leading to more reliable models and faster planning cycles.
April 2025
40 Commits • 13 Features
Apr 1, 2025April 2025 monthly summary for SanPen/GridCal: Delivered major feature enhancements, stability improvements, and workflow optimizations for grid modeling and substations. Key features include enhanced region substation line plotting (now renders all region substations, including those without buses), strengthened substation merge workflows with unification options for OV buses and VL and expanded merge button capabilities, and new coordinate management tools that streamline map-to-database synchronization. Introduced the ability to transform a line waypoint into a substation (splitting lines and routing connections) and on-demand line length recalculation using API coordinates to ensure geometric integrity. Also added UI and workflow refinements (diagram reset controls, consolidate object coordinates, and merge-selected lines) to improve usability and reduce manual corrections. Addressed critical bugs affecting visualization, calculation accuracy, and data integrity, leading to more reliable models and faster planning cycles.
March 2025
26 Commits • 5 Features
Mar 1, 2025March 2025 delivered meaningful business value across localization, UI/UX, and data integrity for SanPen/GridCal. Key features were added to broaden market readiness and improve workflow, while testing and fixes reduced risk of regressions and misconfigurations.
26 Commits • 5 Features
Mar 1, 2025March 2025 delivered meaningful business value across localization, UI/UX, and data integrity for SanPen/GridCal. Key features were added to broaden market readiness and improve workflow, while testing and fixes reduced risk of regressions and misconfigurations.
March 2025
February 2025
8 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary for SanPen/GridCal focused on delivering advanced modeling capabilities, strengthening data handling, and improving test reliability. This period emphasized business value through accurate optimization with superconducting components and robust base MVA ingestion from grid files.
February 2025
8 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary for SanPen/GridCal focused on delivering advanced modeling capabilities, strengthening data handling, and improving test reliability. This period emphasized business value through accurate optimization with superconducting components and robust base MVA ingestion from grid files.
January 2025
34 Commits • 10 Features
Jan 1, 2025January 2025 GridCal monthly summary focused on delivering reliable, high-value GridOPF enhancements, refactoring for maintainability, and performance improvements. Key features delivered include PQV limits profiles and removal of device availability from generators and batteries; completed ACOPF refactor with indexing tracking and groundwork for removing connectivity matrices; and ongoing import typing improvements to reduce runtime errors. Major performance and reliability improvements include optimization of generation connectivity matrix creation and faster equation calculations. Expanded test coverage with a refactored test suite and new ACOPF-related tests to improve resilience and confidence.
34 Commits • 10 Features
Jan 1, 2025January 2025 GridCal monthly summary focused on delivering reliable, high-value GridOPF enhancements, refactoring for maintainability, and performance improvements. Key features delivered include PQV limits profiles and removal of device availability from generators and batteries; completed ACOPF refactor with indexing tracking and groundwork for removing connectivity matrices; and ongoing import typing improvements to reduce runtime errors. Major performance and reliability improvements include optimization of generation connectivity matrix creation and faster equation calculations. Expanded test coverage with a refactored test suite and new ACOPF-related tests to improve resilience and confidence.
January 2025
December 2024
8 Commits • 2 Features
Dec 1, 2024December 2024 — SanPen/GridCal monthly summary: Delivered a set of improvements to AC-OPF reactive power control and expanded testing coverage. Implemented generator PQ curve modeling, corrected controllable shunts handling in controlQ constraints, and added a dedicated test case to validate interactions. These changes improve voltage stability, support more accurate Q control, and increase reliability of the AC-OPF workflow, reducing risk of mis-specified constraints in production.
December 2024
8 Commits • 2 Features
Dec 1, 2024December 2024 — SanPen/GridCal monthly summary: Delivered a set of improvements to AC-OPF reactive power control and expanded testing coverage. Implemented generator PQ curve modeling, corrected controllable shunts handling in controlQ constraints, and added a dedicated test case to validate interactions. These changes improve voltage stability, support more accurate Q control, and increase reliability of the AC-OPF workflow, reducing risk of mis-specified constraints in production.
November 2024
6 Commits
Nov 1, 2024November 2024 monthly summary for SanPen/GridCal focusing on robustness of AC OPF computations through targeted bug fixes and stability improvements. Delivered two critical fixes addressing matrix sizing and voltage limit handling in AC OPF derivatives, with commits tracked for traceability.
6 Commits
Nov 1, 2024November 2024 monthly summary for SanPen/GridCal focusing on robustness of AC OPF computations through targeted bug fixes and stability improvements. Delivered two critical fixes addressing matrix sizing and voltage limit handling in AC OPF derivatives, with commits tracked for traceability.
November 2024
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Quality Metrics
Correctness85.6%
Maintainability84.0%
Architecture81.4%
Performance76.2%
AI Usage20.4%
Skills & Technologies
Programming Languages
CSVCythonJavaScriptNumPyNumbaNumpyPandasPythonSVGSciPy
Technical Skills
API IntegrationBackend DevelopmentBackend IntegrationBug FixingCode RefactoringCompiler DesignConfigurationConfiguration ManagementContext MenusCoordinate SystemsData AnalysisData CorrectionData EngineeringData HandlingData Management
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