Study Of HVDC Transmission System Oscillation And Parameter Optimization Of Current Regulator

In recent years, HVDC Transmission has been developed very fast in China. Its main characteristic is bulk power transmission over long distance. Considering the importance and particularity of HVDC transmission, the main aim of different research aspects in HVDC is to keep the steady and reliable operation of HVDC project. As the key part, the control system affects the operation characteristics of HVDC project directly. According to some contingencies during operation and defects during on-site tests in actual projects, this paper points out that it is necessary to optimize parameters of related controllers. In order to optimize the parameters of current controller and make a research of direct current transmission system oscillation in detail, a simulation system of GEZHOUBA-SHANGHAI HVDC project is built up, and it has the same control system with actual project. In the paper, all the data and waveforms were from on-site tests and simulation tests. The analysis of parameter optimization of current controller and the oscillation in HVDC system were based on the data from simulation tests.