南方电网广域失步解列系统特性实时仿真研究

Research on Real-time Simulation of Wide Area Out-of-step System in CSG

为研究南方电网广域失步解列系统的动作特性,开展基于年度典型运行方式的实时仿真试验研究,构建基于现场实际装置、运行定值设置的试验系统,并研究与装置算法一致的联络线功角、Ucos φ振荡曲线、装置安装点电压等观测量的建模方法。通过设置多个严重单一或多重故障算例,对广域失步解列的动作特性进行验证。试验结果分析表明:广域失步解列系统能够满足解列快速性、同时性和选择性的设计要求,解决两广断面南通道解列晚以及同时解列两广、贵广断面等严重影响解列后系统稳定恢复的问题。

In order to study action characteristics of the wide area out-of-step system of CSG, a real-time simulation research based on the annual typical operation mode is carried out, a test system based on the actual device and the setting of operation setting values is constructed, and the modeling methods of the important measurement such as the power angle of tie line, Ucos φ oscillation curve and the voltage at the installation point of device are studied. The operation characteristics of wide area out-of-step system are fully verified by several serious single or multiple fault examples. The analysis of the test results shows that the wide area out-of-step system can meet the design requirements of splitting speediness, simultaneity and selectivity, and can solve the problems of late splitting in the south channel of Guangdong and Guangxi cross sections, as well as the problem that the system cannot recover stability after splitting Guangdong and Guangxi, Guizhou and Guangxi cross sections simultaneously.