GridPACK v3.6

[3.6]

• Added
  • Docker Support
    • Multi-architecture Docker builds (AMD/ARM) with CI/CD pipeline
    • Complete containerized GridPACK installation (OpenMPI, Boost, GA, PETSc)
    • Documentation updated to include Docker usage
  • State Estimation Enhancements
    • Jacobian optimization and performance profiling for large-scale systems
    • Bad data detection with chi-square test and configurable
      diagnosticOutputLevel parameter (basic/standard/detailed)
    • Sparse matrix support for improved computational efficiency
    • Added IIJ/IJI measurement types and enhanced voltage constraint options
    • HPC capability for state estimation
    • Chi-square convergence criteria in the outer loop
    • Comprehensive output reporting with convergence warnings
    • XML-configurable Newton-Raphson damping factor (dampingFactor, default 1.0)
    • Updated IEEE 14-bus and IEEE 118-bus test inputs
  • Python interface for state estimation including setMeasurements() API
    and Sphinx documentation for the Python state estimation interface.
  • Power Flow Improvements
    • Q-limit (QLIM) handling with PV-to-PQ bus switching and island detection
    • RMPCT-based reactive power distribution for multi-generator buses
    • Fixed shunt status check, Qg distribution when QLIM is reached, and
      flat/warm start
    • Switched shunt support
    • ZIP load model with voltage-dependent load representation
    • Added Pinj, Qinj to power flow screen outputs
    • Per-iteration max mismatch reporting in Newton-Raphson solve
    • IREG remote voltage regulation support from PSS/E generator data
    • JSON and CSV export of power flow results via ResultsExporter
  • Contingency Analysis Enhancements
    • N-1 auto-generation feature for contingency analysis
    • Automatic slack bus transfer and capacity check
    • QLIM configuration support in CA input XML files (default: false)
    • PV->PQ warning messages in contingency output files
    • Generator ID display in contingency results
    • JSON and CSV export of contingency analysis results
  • Dynamic Simulation Enhancements
    • GENROU PSS integration
    • Iterative equilibrium initialization (XML: equilibriumInit, default false)
    • Support dynamic models (GENROU, GENSAL, Classical) for generators with
      negative PG.
  • Added build trigger when releasing a new version of GridPACK
• Changed
  • User manual updated for v3.6 including power flow, state estimation,
    dynamic simulation, and Python interface documentation
  • Migrated QLIM parameter to bool type in power flow and CA for consistency
  • Optimized CMake builds
• Fixed
  • Generator Models
    • GENROU: scaled quadratic saturation, iterative q-axis saturation init,
      LadIfd Se*Psidpp term, (1+omega) speed factor on internal voltage
    • GENSAL: unified saturation to PSS/E scaled quadratic, (1+omega) speed
      factor, predictor speed deviation, saturation initialization
    • PowerAngle output wrapping to [-180,180] in all generator models
    • Null pointer crash on unrecognized generator model in dsf_components
  • Exciter Models
    • ESST1A: regulator limits Vrmin/Vrmax to Vamin/Vamax, lead-lag bypass
    • ESST4B: Kim parser key from EXCITER_KPM to EXCITER_KIM
    • EXDC1: lead-lag using TA instead of TC
    • SEXS: EMAX default from 0.0 to 999.0
  • Governor Models
    • GGOV1: re-enabled parameter parsing, PIDIn undefined behavior, State 9
      ODE, lead-lag bypass/coefficients, corrector rate limit variable
    • WSIEG1: parser T3 field, NGV yin[] index, NGV/Db1/Db2 block types and
      conditional bypass for zero data
    • WSHYGP: NGV yin[] indices, gate servo feedback, abs/fabs
    • HYGOV: fallback setting R instead of r
    • PSSSIM: washout output divided by Tw
  • Renewable Energy Models
    • REECA1: VDL1/VDL2 swap, Thld state machine, timer formula, TIQ parser
    • REPCA1: FEMIN parser column, over-frequency droop sign handling
    • REGCA1: Iq_olim sign, P/Q swap in output
    • REGCB1/REGCC1: uninitialized Preal variable
  • Load Models
    • MOTORW: comma operator (C0=1,0 -> 1.0), hardcoded llr1 removed, slip
      interpolation
    • IEEL: normalization destroying valid coefficients
  • Framework / Infrastructure
    • ForceSerial off-by-one in setElementRange half-open range
    • Cblock crash when model time constant is zero
    • Contingency analysis multi-process deadlock in GA operations
    • 3-winding transformer parsing in PSS/E parsers
  • Power Flow
    • Warm start with qlim=false scenario
    • Incomplete printing of parallel lines in output
    • Trailing space in contingency output filenames
    • Qmin/Qmax storage