ZHANG Da, JIANG Quanyuan

(School of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

 

Abstract: Aiming at the growing demand for efficient simulation of DC power distribution system along with the rapid development of DC power distribution system, study of simulation algorithm of DC power distribution system was carried out. An electromagnetic transient program for DC distribution system was developed, and models of photovoltaic batteries, lithium batteries, voltage source converter, DCDC converter, AC/DC load and other components were built. Aiming at the complex control logic of power switches, a parallel algorithm based on timedelay decoupling was proposed to improve the simulation efficiency, which is suitable for the control system. Finally, a case of DC power distribution system was used to demonstrate the accuracy of the method developed. The results indicate that the simulation program and the parallel algorithm proposed are accurate and efficient.

Key words: DC distribution power system; electromagnetic transient; parallel simulation; control system; network partition