The Real-time Digital Simulation System for Distribution Network

With the access of large-scale distributed power and electric vehicles, the operation state of modern distribution network is more complex and changeable. In this paper, kinds of operation scenarios that may occur in the field operation of the system are fully considered. Combined with the wide area measurement and control system function of the distribution network, the test scheme is designed based on the actual distribution network and a typical test case is established. The typical network parameters of the actual distribution network are calculated and a typical 28-nodes distribution network simulation example is established. The artificial short circuit test based on unmanned aerial vehicle is carried out to verify the correctness of the simulation example. The test results verify the correctness of the proposed example. Based on the real-time digital simulation system and dynamic simulation experiment system, the test platform of wide area measurement and control system in distribution network is built. Through the multi scene real-time digital simulation test, the state estimation, fault diagnosis and positioning, coordinated control and other advanced application control effects can be checked. Through the hardware in the loop test and dynamic simulation experiment based on real-time digital simulation, the distribution network Phasor Measurement Unit (DPMU) and master station of distribution network wide area measurement control system can be tested.