A Study on User-defined Modeling of VSCHVDC Transmission System in PSS/E

As a widely used power system analytical toolset in the world, Power System Simulator for Engineering (PSS/E) is also characterizing with its powerful user-defined function. This paper illustrates a study of user-defined modeling function in PSS/E through modeling a VSC-HVDC transmission system. The user-defined modeling (UDM) function of PSS/E is introduced in detail, then a modeling method for VSC-HVDC is proposed. Through comparing the simulation curves of user-defined VSC-HVDC in PSS/E with that simulated by PSCAD/EMTDC, the correctness of the VSC-HVDC user-defined model, the feasibility as well as the practicability of PSS/E's user-defined function are validated. The modeling method proposed in this paper can provide guidance and a basis for the modeling of other complex components in PSS/E for simulations.