一种计及近区调相机的柔性直流输电无功控制优化策略  

Reactive Power Control Optimization Strategy for VSC-HVDC with Near-Area Synchronous Condenser Considered

作　　者：向慧明 陈堃 李佳[3] XIANG Huiming;CHEN Kun;LI Jia(College of Electrical and New Energy,Three Gorges University,Yichang Hubei 443002,China;State Grid Hubei Electric Power Research Institute,Wuhan Hubei 430077,China;State Key Laboratory of Advanced Electromagnetic Engineering and Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan Hubei 430074,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]国网湖北省电力有限公司电力科学研究院,湖北武汉430077 [3]华中科技大学电气电子工程学院先进电磁工程与技术国家重点实验室,湖北武汉430074

出　　处：《湖北电力》2024年第4期63-70,共8页Hubei Electric Power

基　　金：国家电网有限公司科技项目(项目编号:5100-202022011A-0-0-00)。

摘　　要：为充分利用柔性直流输电的无功容量并发挥其有功无功(PQ)解耦控制的优势,对柔性直流输电和调相机近区并存条件下的柔性直流输电无功控制技术进行了研究。首先构建了调相机的模型,然后对比分析了柔性直流输电和调相机的无功响应特性差异,并基于该差异提出了一种柔性直流输电无功控制优化策略。该策略结合我国电网建设思路,优化了柔性直流输电的无功响应特性,缓解了电网故障恢复过程中的暂态过电压问题。最后通过仿真论证了所提策略的可行性和有效性。In order to fully utilize the reactive power capacity of VSC-HVDC and leverage its PQ decoupling control capabilities,this paper makes studies on the reactive power control technology of VSC-HVDC systems under conditions where VSC-HVDC and regulators coexist in close proximity.First,a model of regulating machine is constructed,and the differences in reactive power response characteristics between VSC-HVDC and the regulating machine are compared and analyzed.And then,an optimized reactive power control strategy for VSC-HVDC is proposed based on these differences.This strategy combines with the principles from the construction of China’s power grid to enhance the reactive power control response characteristics of VSC-HVDC systems,thereby mitigating the issue of transient overvoltage during grid fault recovery.The feasibility and effectiveness of the proposed strategy are validated through simulation studies.

关 键 词：VSC-HVDC 无功功率 调相机 控制策略 暂态电压 

分 类 号：TM721.1[电气工程—电力系统及自动化]