Measurement of LVRT and HVRT characteristics of SVG and parameter identification of electromechanical simulation model

Abstract

In order to obtain the low voltage ride through (LVRT) and high voltage ride through (HVRT) control model parameters of static var generator (SVG) with wide adaptability and high accuracy. A parameter testing and identification method of SVG fault model based on full fault set is proposed. Firstly, the electromechanical simulation model structure of SVG is analyzed, and the parameters to be identified are defined. Then, according to the voltage disturbances of various types and amplitudes that may occur in the operation of SVG, the test fault set is designed, and a comprehensive test is carried out for the package electromagnetic calculation given by the manufacturer. Finally, the fault control model of the manufacturer is obtained according to the test results, and the least square method is identified according to the parameters of PSASP model. The correctness of the test and identification results is verified by time-domain simulation.