一种快速动态响应同步调相机低励限制定值整定方法  

A Setting Method of Low Excitation Limit of Fast Dynamic Response Synchronous Condenser

作　　者：解笑苏 朱应峰 李明 孙福春 许金阳 XIE Xiaosu;ZHU Yingfeng;LI Ming;SUN Fuchun;XU Jinyang(State Grid Shandong Electric Power Research Institute,Jinan 250003,China;Shandong Smart Grid Technology Innovation Center,Jinan 250003,China)

机构地区：[1]国网山东省电力公司电力科学研究院,山东济南250003 [2]山东省智能电网技术创新中心,山东济南250003

出　　处：《山东电力技术》2025年第3期68-74,共7页Shandong Electric Power

基　　金：国网山东省电力公司电力科学研究院自主研发项目(ZY-2023-12)。

摘　　要：随着特高压直流的快速发展,快速动态响应同步调相机对电网的暂稳态无功支撑作用愈发重要。部分机组除提供故障情况下的暂态无功支撑外,还按调度指令逐步开始承担稳态无功调节任务。由于与换流站无功控制系统间未建立协调控制机制,当机组运行在稳态进相运行无功边界附近时,换流站投入交流滤波器导致的母线电压突升可能激发调相机次暂态调节及励磁系统的电压调节,使机组无功迅速下降,此时若励磁系统低励限制与调相机失磁保护定值整定存在配合问题,可能引发失磁保护不必要的启动甚至跳机。文中剖析了快速动态响应同步调相机与传统发电机失磁保护及低励限制的差异性,并对二者的配合关系进行了分析,提出了一种快速动态响应同步调相机低励限制定值整定方法,并通过案例分析及仿真对所提出的方法进行了验证。With the rapid development of UHV DC power grid,the fast dynamic response synchronous condenser plays an increasingly important role in supporting the transient reactive power of the power grid.Some condensers not only provide transient reactive power support in case of faults,but also gradually begin to undertake steady-state reactive power regulation tasks according to dispatch instructions.Because of the lack of coordination between condensers and the reactive power control system of the converter station,a coordination problem between loss of excitation protection and low excitation limit may lead to the act of loss of excitation protection when a condenser operates near the reactive power boundary of steady-state and the AC filters of converter station put into operation,conduct to the subtransient state effect of condensers and the voltage regulation effect of the excitation system.This paper analyzes the differences of loss of excitation protection and low excitation limit between fast dynamic response synchronous condenser and traditional generator,and analyzes the coordination relationship between the two.A setting method of low excitation limit of fast dynamic response synchronous condenser is proposed,and verified through case analysis and simulation.

关 键 词：调相机 失磁保护 低励限制 

分 类 号：TM772[电气工程—电力系统及自动化]