SanPen/GridCal
Mar 2025 – Sep 2025
6 Months active
Languages Used
PythonBinaryCSVExcelGridScriptNumPyShellC++
Technical Skills
Backend DevelopmentElectrical EngineeringPython DevelopmentSoftware EngineeringCircuit CompilationCode Cleanup
Alex Blanco
PROFILE
Alex Blanco
Over six months, Abel Blanco developed advanced three-phase power system modeling and analysis features for the SanPen/GridCal repository, focusing on unbalanced grid simulation and short-circuit studies. He engineered robust backend solutions in Python and C++, implementing accurate transformer and overhead line models, phase-aware short-circuit calculations, and comprehensive test suites for IEEE 13-bus and European LV feeders. Abel improved data handling, matrix operations, and validation workflows, ensuring reliable simulation results and streamlined onboarding through expanded documentation. His work integrated numerical methods, object-oriented programming, and electrical engineering principles, resulting in a maintainable, business-ready platform for power systems analysis and planning.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
247Total
Bugs
21
Commits
247
Features
63
Lines of code
159,674
Activity Months6
Your Network
23 people
Work History
September 2025
13 Commits • 4 Features
Sep 1, 2025Month: 2025-09. Focused on delivering robust three-phase power flow capabilities and expanding test coverage for grid simulations. Key outcomes include improved modeling accuracy, expanded test suites, and comprehensive documentation, enabling faster onboarding and reliable business decisions based on unbalanced three-phase analysis.
13 Commits • 4 Features
Sep 1, 2025Month: 2025-09. Focused on delivering robust three-phase power flow capabilities and expanding test coverage for grid simulations. Key outcomes include improved modeling accuracy, expanded test suites, and comprehensive documentation, enabling faster onboarding and reliable business decisions based on unbalanced three-phase analysis.
September 2025
August 2025
56 Commits • 16 Features
Aug 1, 2025Monthly summary for 2025-08 for SanPen/GridCal focusing on delivering core numerical reliability, phase-aware analyses, quality improvements, and developer enablement. Highlights include robust initialization of critical arrays, phase-reference frame adaptation for short-circuit computations, expanded test coverage with input validation, GUI-enabled VSC configurations, and comprehensive documentation updates across three-phase components.
August 2025
56 Commits • 16 Features
Aug 1, 2025Monthly summary for 2025-08 for SanPen/GridCal focusing on delivering core numerical reliability, phase-aware analyses, quality improvements, and developer enablement. Highlights include robust initialization of critical arrays, phase-reference frame adaptation for short-circuit computations, expanded test coverage with input validation, GUI-enabled VSC configurations, and comprehensive documentation updates across three-phase components.
July 2025
40 Commits • 15 Features
Jul 1, 2025July 2025 monthly summary for SanPen/GridCal: Delivered extensive test coverage and fault-model enhancements for three-phase systems, significantly expanding analysis capabilities and reliability. Key outcomes included passing 3-phase admittance matrix tests, fixing test failures, and removing debug prints to improve production readability. Implemented advanced fault models (LLLG, LL, DLG, LLL) and validated all short-circuit types, enabling more accurate protection and contingency studies. Built and validated OpenDSS workflows: creation of a 13-node test feeder, correction of susceptance signs, and comprehensive OpenDSS validation across all load combinations. Introduced constant-impedance three-phase loads, added a new three-phase power flow test for non-IEEE loads, and initialized ShortCircuitResults in the phase reference to support the short-circuits tool. These efforts collectively improve model fidelity, reduce validation time, and support broader business use cases in planning and protection studies.
40 Commits • 15 Features
Jul 1, 2025July 2025 monthly summary for SanPen/GridCal: Delivered extensive test coverage and fault-model enhancements for three-phase systems, significantly expanding analysis capabilities and reliability. Key outcomes included passing 3-phase admittance matrix tests, fixing test failures, and removing debug prints to improve production readability. Implemented advanced fault models (LLLG, LL, DLG, LLL) and validated all short-circuit types, enabling more accurate protection and contingency studies. Built and validated OpenDSS workflows: creation of a 13-node test feeder, correction of susceptance signs, and comprehensive OpenDSS validation across all load combinations. Introduced constant-impedance three-phase loads, added a new three-phase power flow test for non-IEEE loads, and initialized ShortCircuitResults in the phase reference to support the short-circuits tool. These efforts collectively improve model fidelity, reduce validation time, and support broader business use cases in planning and protection studies.
July 2025
June 2025
90 Commits • 20 Features
Jun 1, 2025June 2025 — SanPen/GridCal monthly summary focusing on business value and technical achievements. The team delivered core three‑phase power system modeling improvements, expanded end‑to‑end validation for the IEEE 13‑bus scenario, and strengthened masking, slicing, and short‑circuit workflows to enable reliable simulations and faster decision cycles. Key outcomes include robust admittance computations for transformers, preserved line phase information for topology fidelity, and a scalable IEEE 13‑bus workflow now supported by data, tests, and improved convergence.
June 2025
90 Commits • 20 Features
Jun 1, 2025June 2025 — SanPen/GridCal monthly summary focusing on business value and technical achievements. The team delivered core three‑phase power system modeling improvements, expanded end‑to‑end validation for the IEEE 13‑bus scenario, and strengthened masking, slicing, and short‑circuit workflows to enable reliable simulations and faster decision cycles. Key outcomes include robust admittance computations for transformers, preserved line phase information for topology fidelity, and a scalable IEEE 13‑bus workflow now supported by data, tests, and improved convergence.
May 2025
44 Commits • 7 Features
May 1, 2025May 2025 monthly summary for SanPen/GridCal: Delivered multi-faceted three-phase modeling improvements and expanded verification, driving greater accuracy and reliability in grid simulations. Key features were implemented and tested to support correct configuration of three-phase components, expanded test coverage, and validation against European LV feeders. A new development phase tracking mechanism improved workflow visibility. Critical numerical fixes were applied to core calculations, enhancing determinism and stability in simulations. Overall, these efforts reduce risk for deployments, shorten validation cycles, and enable more business-ready grid analyses.
44 Commits • 7 Features
May 1, 2025May 2025 monthly summary for SanPen/GridCal: Delivered multi-faceted three-phase modeling improvements and expanded verification, driving greater accuracy and reliability in grid simulations. Key features were implemented and tested to support correct configuration of three-phase components, expanded test coverage, and validation against European LV feeders. A new development phase tracking mechanism improved workflow visibility. Critical numerical fixes were applied to core calculations, enhancing determinism and stability in simulations. Overall, these efforts reduce risk for deployments, shorten validation cycles, and enable more business-ready grid analyses.
May 2025
March 2025
4 Commits • 1 Features
Mar 1, 2025March 2025 performance highlights for SanPen/GridCal: Key feature delivered was Overhead Line Template Improvements and Sequence Admittance Access. Improvements include initializing circuit index to zero, correcting retrieval of positive-sequence values (R1, X1, Bsh1), and enhancing access to sequence admittance matrices, plus new methods to retrieve ys and ysh for lines. This directly increases modeling fidelity and reliability for overhead line calculations. Major maintenance work completed with Binary Merge Updates to desktop.ini (no functional changes; no user-facing impact). This work reinforces data integrity and repository hygiene. Overall impact: more accurate grid simulations, reduced risk of template-related errors, and a stronger foundation for future enhancements. Technologies and skills demonstrated: careful initialization patterns, sequence parameter handling, data access design for admittance matrices, and disciplined version-control processes.
March 2025
4 Commits • 1 Features
Mar 1, 2025March 2025 performance highlights for SanPen/GridCal: Key feature delivered was Overhead Line Template Improvements and Sequence Admittance Access. Improvements include initializing circuit index to zero, correcting retrieval of positive-sequence values (R1, X1, Bsh1), and enhancing access to sequence admittance matrices, plus new methods to retrieve ys and ysh for lines. This directly increases modeling fidelity and reliability for overhead line calculations. Major maintenance work completed with Binary Merge Updates to desktop.ini (no functional changes; no user-facing impact). This work reinforces data integrity and repository hygiene. Overall impact: more accurate grid simulations, reduced risk of template-related errors, and a stronger foundation for future enhancements. Technologies and skills demonstrated: careful initialization patterns, sequence parameter handling, data access design for admittance matrices, and disciplined version-control processes.
Activity
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Quality Metrics
Correctness85.4%
Maintainability82.4%
Architecture81.0%
Performance73.4%
AI Usage20.4%
Skills & Technologies
Programming Languages
BinaryC++CSVCythonExcelGridScriptImageJinjaLaTeXMarkdown
Technical Skills
Backend DevelopmentC++Circuit CompilationCode CleanupComplex NumbersConfiguration ManagementData AnalysisData ConversionData EngineeringData ExportData HandlingData ManagementData ManipulationData ModelingData Parsing
Repositories Contributed To
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