The Power System Component Library is included as an integral part of RSCAD and contains all the fundamental elements of an electrical power system. Each component model has been developed and tested in-house to ensure accuracy and stability for long term real time simulation. Numerous features have been added to the components based on experience and customer feedback, refining their operation and increasing flexibility.
RTDS Technologies’ simulation experts are continually expanding the component library based on customer requirements and in-house research. Through this effort, we intend to help our clients make the most of their investment. However, if a component model is not available in the standard component libraries, the user can create them using the ComponentBuilder module.
The descriptions below are by no means an exhaustive list of the available components, but provide an overview of the base components.
Real Time Network Solution
Solves nodal equations for simulation circuits including passive elements, breakers and faults. The network solution performs real time decomposition of the admittance matrix which allows continually varying conductance elements to be represented in the circuit. The use of the NovaCor hardware platform permits 300 single phase nodes per network solution, and 2 network solutions per chassis, for a total of 600 possible single phase nodes per chassis.
Transmission Lines and Cables
Bergeron, frequency dependent (phase domain), or pi-section models can represent full coupling between as many as 12 conductors. All types of T-line models are available at both the main and small timestep.
The TLine and Cable modules of the RSCAD software allow the user to define the physical characteristics of the components.
The transmission line component has an embedded node option. This means that, optionally, the transmission line component can also represent the sending and/or receiving end circuit breaker. This reduces the number of nodes solved on the network solution and frees up some space on the network solution. This allows the user to increase the size of the circuit that is solved on that network solution.
Synchronous and induction machines, multi-mass model (maximum 8 masses).
Phase domain synchronous machine model with internal fault.
The synchronous machine component has an embedded node option. This means that, optionally, the synchronous machine component can also represent the unit transformer, generator breaker, and the generator terminal bus. This reduces the number of nodes solved on the network solution and frees up some space on the network solution. This allows the user to increase the size of the circuit that is solved on that network solution.
Voltage and Current Sources
Sources provide several impedance options to act as network equivalent models and allow the positive and zero sequence impedance to be specified independently.
Both 2- and 3-winding transformers with on-load tap changers, saturation and hysteresis, and internal faults.
Current transformer (CT), capacitive voltage transformer (CVT) with ferroresonance damping circuit, and potential transformer (PT) – all with saturation and hysteresis representation.
Wind turbines, photovoltaics, fuel cells and various other power sources can be represented by library components, while the corresponding VSC converters can be freely configured in small timestep subnetworks.
Static VAR Compensation
SVC model includes TCR (with improved firing) and TSC.
Model provides as many as 12 individually switched filters, and an optional arrestor, without requiring the use of any additional nodes. The entire component is embedded in the main network solution as variable conductance elements. Various filter configurations are available, including single, double, and triple tuned options.
Either fixed or variable (TCSC) compensation components are available with MOV, bypass breaker, spark gap, capacitor bank unbalance, etc.