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主要研究特高压示范工程南部落点的协调电压控制问题。设计并开发潮流仿真平台,能模拟电网无功电压调节的准稳态过程,并兼顾电网安全约束和特高压线路绝缘要求。基于仿真平台,对比研究了独立控制和协调控制两种模式,并综合利用发电机进相、直流降压运行、停运500kV线路等各种调节手段,对三峡近区电网的电压控制进行了全过程仿真,分析了影响特高压线路落点变电站电压下降的关键因素。
The main study of the coordination of voltage control problems in the southern part of UHV demonstration project. The design and development of trend simulation platform can simulate the quasi-steady state process of reactive power voltage regulation in power grids, taking into account the power grid safety constraints and the requirements of UHV line insulation. Based on the simulation platform, the two modes of independent control and coordinated control are comparatively studied. Based on the synthetical utilization of various regulation methods such as generator into phase, DC step-down operation and outage of 500kV line, the voltage control of the Three Gorges near-area power grid is fully implemented Process simulation and analysis of the key factors affecting the voltage drop of substation at UHV line.