e2nIEE/pandapower
Nov 2024 – Oct 2025
10 Months active
Languages Used
PythonRSTSQLrstJSON
Technical Skills
Code MaintenanceData ManipulationDocumentationNumerical ComputationPower Systems AnalysisPower Systems Engineering
Dominik Hilbrich
PROFILE
Dominik Hilbrich
Dominik Hilbrich developed and maintained core features for the e2nIEE/pandapower repository, focusing on power systems modeling, data import reliability, and simulation accuracy. He enhanced transformer and shunt modeling, improved PowerFactory data conversion workflows, and strengthened geodata import robustness. Using Python and pandas, Dominik refactored code for maintainability, modernized API integrations, and implemented comprehensive testing to ensure reliability across partial and merged datasets. His work addressed nuanced issues in measurement protocols, control systems, and data validation, resulting in more dependable power flow calculations and streamlined onboarding. The depth of his contributions improved both code quality and long-term maintainability.
Overall Statistics
Feature vs Bugs
53%Features
Repository Contributions
98Total
Bugs
18
Commits
98
Features
20
Lines of code
5,065
Activity Months10
Your Network
31 people
Work History
October 2025
3 Commits
Oct 1, 2025October 2025 monthly summary for e2nIEE/pandapower: Focused on reliability improvements to the geodata import pipeline, specifically for line geometries. Implemented robust handling for missing coordinate data during partial imports, refactored get_scale_factor to return None for invalid inputs, and introduced pandas-based NaN checks to standardize null handling. These changes reduce NaN propagation, lower warning noise, and improve stability when importing partial datasets. Business impact includes more dependable data ingestion for line geodata, better user experience during partial imports, and a foundation for future data-quality enhancements. Key commits were 4fdb6ad4adcb988534fea92713490b81dce7685d, b6e1d97ada702556ebcf923d4dee29b1ea91e8dc, and 8da5b87a8ea4a9df5cb880409558483c1de26442.
3 Commits
Oct 1, 2025October 2025 monthly summary for e2nIEE/pandapower: Focused on reliability improvements to the geodata import pipeline, specifically for line geometries. Implemented robust handling for missing coordinate data during partial imports, refactored get_scale_factor to return None for invalid inputs, and introduced pandas-based NaN checks to standardize null handling. These changes reduce NaN propagation, lower warning noise, and improve stability when importing partial datasets. Business impact includes more dependable data ingestion for line geodata, better user experience during partial imports, and a foundation for future data-quality enhancements. Key commits were 4fdb6ad4adcb988534fea92713490b81dce7685d, b6e1d97ada702556ebcf923d4dee29b1ea91e8dc, and 8da5b87a8ea4a9df5cb880409558483c1de26442.
October 2025
September 2025
12 Commits • 1 Features
Sep 1, 20252025-09 monthly summary for e2nIEE/pandapower: Delivered local voltage control enhancements and hardened import/init workflows, delivering measurable reliability improvements and clearer documentation. Key features delivered: VDroopControl_local as a station controller with accompanying tests and inline documentation. Major bugs fixed: DroopControl initialization and setpoint handling (vm_set_pu_bsc alias; missing setpoint error) and PowerFactory import initialization/robustness across constv/constq modes (including proper vm_pu/q_mvar behavior when out of service). Refactoring and cleanup: removed debug prints and completed Sphinx documentation for VDroop local control. Technologies/skills demonstrated: Python refactoring, test-driven development, unit/integration tests, Sphinx documentation, and PowerFactory integration.
September 2025
12 Commits • 1 Features
Sep 1, 20252025-09 monthly summary for e2nIEE/pandapower: Delivered local voltage control enhancements and hardened import/init workflows, delivering measurable reliability improvements and clearer documentation. Key features delivered: VDroopControl_local as a station controller with accompanying tests and inline documentation. Major bugs fixed: DroopControl initialization and setpoint handling (vm_set_pu_bsc alias; missing setpoint error) and PowerFactory import initialization/robustness across constv/constq modes (including proper vm_pu/q_mvar behavior when out of service). Refactoring and cleanup: removed debug prints and completed Sphinx documentation for VDroop local control. Technologies/skills demonstrated: Python refactoring, test-driven development, unit/integration tests, Sphinx documentation, and PowerFactory integration.
August 2025
25 Commits • 5 Features
Aug 1, 2025August 2025 (2025-08) monthly summary for e2nIEE/pandapower. Focused on stabilizing measurement relocation, PF compatibility, and converter tooling, with a strong emphasis on code quality and test coverage. Delivered targeted bug fixes, feature improvements, and testing enhancements that reduce regression risk and improve measurement reliability and control behavior.
25 Commits • 5 Features
Aug 1, 2025August 2025 (2025-08) monthly summary for e2nIEE/pandapower. Focused on stabilizing measurement relocation, PF compatibility, and converter tooling, with a strong emphasis on code quality and test coverage. Delivered targeted bug fixes, feature improvements, and testing enhancements that reduce regression risk and improve measurement reliability and control behavior.
August 2025
May 2025
11 Commits • 2 Features
May 1, 2025Concise monthly summary for 2025-05 focusing on business value and technical achievements for e2nIEE/pandapower. Delivered robust pf2pp converter enhancements, improved grid data import stability, and safer network merging with transformer characteristics handling. Maintained and streamlined test suite and documentation to ensure reliable validation and faster onboarding of data sources.
May 2025
11 Commits • 2 Features
May 1, 2025Concise monthly summary for 2025-05 focusing on business value and technical achievements for e2nIEE/pandapower. Delivered robust pf2pp converter enhancements, improved grid data import stability, and safer network merging with transformer characteristics handling. Maintained and streamlined test suite and documentation to ensure reliable validation and faster onboarding of data sources.
April 2025
9 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for e2nIEE/pandapower focused on increasing reliability and accuracy of PowerFactory data imports and transformer/shunt processing to deliver more trustworthy power-flow results. The month delivered three key strands: (1) bug fix for PowerFactory tap changer import ensuring correct file paths, type mappings, and None handling across versions; (2) feature enhancements in the pf2pp converter to support shunt table imports and refined step-dependent calculations, plus compatibility improvements and tests; (3) transformer measurement improvements to apply conditional ratio/shift logic when tap_at_star_point is enabled and to extend processing to 3-winding transformers, with corresponding test coverage. Key features delivered: - pf2pp: Shunt Import and Compatibility Improvements: enabled import of shunt characteristic tables, refined step-dependent calculations, added downward compatibility for shunt results, and improved handling when tap table values are available (commits: c32cd550455a62b57f72a0917ad996d198ab962b; 24a4f25ba8b299b5c105d69768359c67758b0865; 1dcfcd2cc28743890a9a91344b820c8513d06597; ddcc4569e42962faa5086c88736c5abe4a78b0f6). - Transformer Measurement Improvements for tap_at_star_point: added conditional logic to adjust ratio and -1*shift when enabled and extended processing to 3-winding transformers (commit: d915b4e529e3a01afe90685bfc31335e8a979ce9). Major bugs fixed: - PowerFactory Tap Changer Import Correctness: fixes to PowerFactory tap changer import, including corrected file path references in tests, consistent handling of None values, and corrected type mappings (commits: 4f12c51fd5e82605ccbd4c59dc7d59b4b602ad52; b92b5fdf1e9fa8a225843129436e3868c79563ac; 539149e3c48f3436a9c7cf248214b82a06bbeefd; e32e48724a49d53aac55487cea8515cd2d7db0c8). Overall impact and accomplishments: - Substantial increase in data import reliability and accuracy for PowerFactory taps, shunts, and transformer measurements, driving more trustworthy simulations and reducing post-import corrections. - Expanded test coverage and compatibility support enabling smoother future upgrades and version migrations. Technologies/skills demonstrated: - Python data processing and data-mapping; unit testing and test-driven development; backward/forward compatibility handling; explicit commit hygiene and code tagging; strong focus on business value through improved data fidelity and automation.
9 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for e2nIEE/pandapower focused on increasing reliability and accuracy of PowerFactory data imports and transformer/shunt processing to deliver more trustworthy power-flow results. The month delivered three key strands: (1) bug fix for PowerFactory tap changer import ensuring correct file paths, type mappings, and None handling across versions; (2) feature enhancements in the pf2pp converter to support shunt table imports and refined step-dependent calculations, plus compatibility improvements and tests; (3) transformer measurement improvements to apply conditional ratio/shift logic when tap_at_star_point is enabled and to extend processing to 3-winding transformers, with corresponding test coverage. Key features delivered: - pf2pp: Shunt Import and Compatibility Improvements: enabled import of shunt characteristic tables, refined step-dependent calculations, added downward compatibility for shunt results, and improved handling when tap table values are available (commits: c32cd550455a62b57f72a0917ad996d198ab962b; 24a4f25ba8b299b5c105d69768359c67758b0865; 1dcfcd2cc28743890a9a91344b820c8513d06597; ddcc4569e42962faa5086c88736c5abe4a78b0f6). - Transformer Measurement Improvements for tap_at_star_point: added conditional logic to adjust ratio and -1*shift when enabled and extended processing to 3-winding transformers (commit: d915b4e529e3a01afe90685bfc31335e8a979ce9). Major bugs fixed: - PowerFactory Tap Changer Import Correctness: fixes to PowerFactory tap changer import, including corrected file path references in tests, consistent handling of None values, and corrected type mappings (commits: 4f12c51fd5e82605ccbd4c59dc7d59b4b602ad52; b92b5fdf1e9fa8a225843129436e3868c79563ac; 539149e3c48f3436a9c7cf248214b82a06bbeefd; e32e48724a49d53aac55487cea8515cd2d7db0c8). Overall impact and accomplishments: - Substantial increase in data import reliability and accuracy for PowerFactory taps, shunts, and transformer measurements, driving more trustworthy simulations and reducing post-import corrections. - Expanded test coverage and compatibility support enabling smoother future upgrades and version migrations. Technologies/skills demonstrated: - Python data processing and data-mapping; unit testing and test-driven development; backward/forward compatibility handling; explicit commit hygiene and code tagging; strong focus on business value through improved data fidelity and automation.
April 2025
March 2025
5 Commits • 1 Features
Mar 1, 2025In March 2025, delivered substantial pf2pp converter enhancements for e2nIEE/pandapower, strengthening the PowerFactory-to-pandapower import workflow and data fidelity. Key improvements include: improved PF IDs mapping to pandapower elements, clearer internal function naming, handling of station controller modes and shunt characteristic tables, and integration notes for cim2pp and related converters. A changelog entry documents these additions and fixes (pf2pp converter, create_nxgraph, from_ucte). These changes, together with bugfixes tied to function renaming, reduce manual rework, increase reliability of imported network models, and accelerate downstream simulations.
March 2025
5 Commits • 1 Features
Mar 1, 2025In March 2025, delivered substantial pf2pp converter enhancements for e2nIEE/pandapower, strengthening the PowerFactory-to-pandapower import workflow and data fidelity. Key improvements include: improved PF IDs mapping to pandapower elements, clearer internal function naming, handling of station controller modes and shunt characteristic tables, and integration notes for cim2pp and related converters. A changelog entry documents these additions and fixes (pf2pp converter, create_nxgraph, from_ucte). These changes, together with bugfixes tied to function renaming, reduce manual rework, increase reliability of imported network models, and accelerate downstream simulations.
February 2025
4 Commits • 1 Features
Feb 1, 2025Feb 2025 monthly summary for e2nIEE/pandapower focusing on business value and technical achievements. Core deliveries center on robustness and reliability of PowerFactory data conversions, improved data hygiene through consistent bus ID typing, and a refactored logging framework with stabilized tests. This work reduces downstream errors, accelerates data pipelines, and improves maintainability across the conversion workflows.
4 Commits • 1 Features
Feb 1, 2025Feb 2025 monthly summary for e2nIEE/pandapower focusing on business value and technical achievements. Core deliveries center on robustness and reliability of PowerFactory data conversions, improved data hygiene through consistent bus ID typing, and a refactored logging framework with stabilized tests. This work reduces downstream errors, accelerates data pipelines, and improves maintainability across the conversion workflows.
February 2025
January 2025
12 Commits • 2 Features
Jan 1, 2025Monthly summary for 2025-01 focusing on e2nIEE/pandapower transformer modeling and data integration improvements. Key efforts targeted API deprecations, transformer parameter recalculation reliability, and robust data conversion for 3-winding transformers, taps, and CIM/PF integration. Also performed essential test cleanup and strategic refactoring to improve maintainability and future readiness for 3-winding transformer support notes. Resulted in a more reliable power flow calculation pipeline and a stronger foundation for upcoming features.
January 2025
12 Commits • 2 Features
Jan 1, 2025Monthly summary for 2025-01 focusing on e2nIEE/pandapower transformer modeling and data integration improvements. Key efforts targeted API deprecations, transformer parameter recalculation reliability, and robust data conversion for 3-winding transformers, taps, and CIM/PF integration. Also performed essential test cleanup and strategic refactoring to improve maintainability and future readiness for 3-winding transformer support notes. Resulted in a more reliable power flow calculation pipeline and a stronger foundation for upcoming features.
December 2024
12 Commits • 4 Features
Dec 1, 2024December 2024 monthly summary for pandapower (e2nIEE/pandapower). Delivered key transformer modeling improvements and hardened build/import workflows across the transformer/tap changer domain, with strong testing coverage and improved business value for power systems modeling.
12 Commits • 4 Features
Dec 1, 2024December 2024 monthly summary for pandapower (e2nIEE/pandapower). Delivered key transformer modeling improvements and hardened build/import workflows across the transformer/tap changer domain, with strong testing coverage and improved business value for power systems modeling.
December 2024
November 2024
5 Commits • 2 Features
Nov 1, 2024Month: 2024-11. Focused on advancing modeling accuracy for transformer tap and phase shifters in pandapower and improving code clarity for maintainability. Delivered two feature improvements: (1) Enhanced transformer tap and phase shifter modeling, differentiating ideal vs non-ideal behavior and clarifying tap dependencies to produce more accurate power system simulations; and (2) Internal cleanup renaming tap-related parameters and updating docs, with related documentation updates in Controller references. No major bugs fixed this month; efforts centered on correctness, consistency, and maintainability. Impact: more accurate simulations, clearer code, faster onboarding for new contributors, and a stronger foundation for future testing and reliability work. Technologies/skills demonstrated: Python modeling, power systems calculations, refactoring, doc updates, and source control hygiene.
November 2024
5 Commits • 2 Features
Nov 1, 2024Month: 2024-11. Focused on advancing modeling accuracy for transformer tap and phase shifters in pandapower and improving code clarity for maintainability. Delivered two feature improvements: (1) Enhanced transformer tap and phase shifter modeling, differentiating ideal vs non-ideal behavior and clarifying tap dependencies to produce more accurate power system simulations; and (2) Internal cleanup renaming tap-related parameters and updating docs, with related documentation updates in Controller references. No major bugs fixed this month; efforts centered on correctness, consistency, and maintainability. Impact: more accurate simulations, clearer code, faster onboarding for new contributors, and a stronger foundation for future testing and reliability work. Technologies/skills demonstrated: Python modeling, power systems calculations, refactoring, doc updates, and source control hygiene.
Activity
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Quality Metrics
Correctness86.2%
Maintainability85.8%
Architecture81.8%
Performance75.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
JSONPythonRSTSQLrst
Technical Skills
API DesignAPI DevelopmentAPI IntegrationBackend DevelopmentBug FixBug FixingBuild SystemsCode CleanupCode DocumentationCode MaintenanceCode RefactoringCode ReviewControl SystemsData AnalysisData Conversion
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