Navajo

Navajo (Version 4.3) is a minor upgrade of GridLAB-D planned for Fall 2020. Changes and improvements in Navajo will be outlined here.

New Capabilities

Ability for global #define statements to take unit values - deltamode_timestep utilizing
Addition of global to force complex output format
Addition of internal load order for deltamode modules, to make sure things execute in proper order
Addition of three-phase or higher-voltage connectivity to the house model
Addition of HELICS-interfaceable event field to eventgen object
Improvement to house to enable adding the powerflow induction motor to house HVAC models
Improvement to evcharger_det to include simple subsecond capabilities and simple SAE J2894 capabilities
Addition of powerflow flag to convert models to constant impedance at particular voltage triggers (outside in-rush)
Improvements to multi-island powerflow capabilities, including the ability to solve them separately
Improvements of wind power capability curve
Addition of inverter_dyn object - a new microgrid/dynamics-oriented inverter
Addition of DC model to solar object for use with inverter_dyn
Addition of sync_check object
Addition of ability to export the right-hand-side vector as part of the NR matrix dump

Performance improvements to NR solver
Fix to constant current implementations in load objects to be more intuitive and flexible to off-nominal angles (migration of deltamode capabilities)
Fixes to compilation process and files to better handle MSYS2 and cross-platform consistency
Fix for _err autotest checking so a failure to fail is not considered a success
Fixes for HVAC operation with a tripped breaker
Fixes to diesel_dg and existing inverter object for deltamode initialization
Fixes to frequency calculation methods to better handle deltamode/QSTS transitions
Fix so base line objects can take matrix definitions, though not encouraged
Fix for normalized schedules
General clean-up of generator and powerflow objects and headers for new API and eliminate erroneous inclusions
Tickets (tickets relating specifically to the development of this version)
- Tickets for 4.3 RC1