Quasi-Dynamic Analysis

Time-domain unbalanced load flow analysis along with control system model is used to simulate system performance and control system interactions during load and generation variation as well as various events over a function of time.

Today’s power systems depend on renewable energy resources to meet their load demand. Energy storage systems are also integrated into power system to allow seamless integration of renewables and increase power system reliability. Both renewables and energy storage systems are typically dispatched through control systems such as power plant controller, microgrid controller or ADMS. To design, study, size assets, and determine optimal control settings, it is essential to evaluate system performance including control system during load and generation variation as well as various events over a function of time. Primary control of inverter-based resource such as Q-V control, P-V Control as well as P-Q capability limitation is considered through smart inverter control function within Quasi-Dynamic analysis. Quasi-Dynamic analysis is an option within Time-Domain Unified Load Flow Analysis.

Key Features

All features of Time Domain Unified Load Flow Analysis
Active power control at point of interconnection
Peak shaving
Reactive power, voltage & power factor control
Energy storage control and management
Renewable smoothing
Microgrid islanded energy management

Applications

Develop and study secondary and tertiary control systems
Grid code study
Design and study renewable and energy storage based systems
Design and study power plants and microgrids
Design and study electric vehicle charging stations
Size reactive power sources, e.g. capacitor banks and Statcom
Real-time testing of secondary and tertiary control systems.

Software Capabilities

All Time-domain unified load flow analysis software capabilities
User-defined control logic (development license)
Controller to controller communication
Communication time delay
Handle etap PPC and Microgrid controller digital twins
DNP3 slave interface for hardware in the loop (HIL) test

Quasi-Dynamic Analysis