基于广域测量系统的UPFC协调控制方案探讨

Coordinated Control Program of UPFC Based on WAMS

摘要: 考虑UPFC串、并联侧包含多种控制模式，为使其在含UPFC的电力系统中达到理想控制效果，本文提出UPFC串、并联侧根据不同运行工况选择控制模式的协调方案。论文以电压稳定为控制目标，借助WAMS实时测量全局信息的功能，在静态失稳、暂态失稳工况下，选择静态失稳、暂态失稳的判别方法作为UPFC控制模式的切换条件，并对UPFC的控制模式进行分析并制定协调控制方案。利用PSCAD/EMTDC时域仿真，验证了协调控制方案的有效性，可实现不同运行工况下UPFC各控制器间的相互协调。

Abstract: In the electric power system with UPFC, depending on the operating conditions to select appropriate control model is the key to online real-time monitoring system.The control objective of the paper is voltage stability. In the conditions of static instability and transient instability, the effect of multiple control mode with UPFC is studied. Select the determining method of voltage instability as the the switching condition of control mode. Then, coordinated control program of UPFC is selected and developed.The program can achieve flexible switching of UPFC control model, make sure the coordination between controllers, reduce the negative interaction, and better meet the requirements of security, stability and flexible running.