特高压交/直流电网仿真技术研究

Real-Time Simulation Technology for UHV Power Grid

电力系统的规模日趋扩大,复杂程度不断增加,迫切需要建立与特高压电网发展形势相适应的特高压电网仿真系统。首先分析了各种仿真系统的特点及其适用范围,然后结合我国特高压电网研究对仿真系统的要求,讨论了可用来对大规模交/直流电网的机电暂态与电磁暂态现象进行实时仿真的全数字实时仿真系统与数模混合仿真系统的原理、功能、特点、发展现状及适用范围,指出了其现存的局限性,提出了改进与完善的思路。

At present the Ultra High Voltage （UHV） power transmission system is developing rapidly. The scale of power grid is being increasingly expanded and its complexity is ever-increasing, thus it is urgent and necessary to establish a simulation system for UHV power grid to investigate the key technologies. In this paper, at first the authors analyze the features and application ranges of existing simulation systems; then considering the requirements of the study on UHV power grid in China to simulation system, discuss the principle, functions, features, current status and application ranges of full digital real-time simulation system as well as those of digital/analog hybrid simulation system, which can be used to perform real-time simulation of electromagnetic and electromechanical transients occurred in large-scale UHVAC/UHVDC power grids; finally point out the limitation of existing simulation systems and give the thinking to improve and perfect them.