多直流附加暂态稳定控制策略及其适应性研究  

Control Strategy of Multi-HVDC Additional Transient Stability and Its Adaptability

作　　者：黄振琳[1] 管霖[1] 陈兴望[1] 沈鹏[1] 张杰[1] 

机构地区：[1]华南理工大学电力学院,广州510641

出　　处：《高电压技术》2017年第4期1175-1185,共11页High Voltage Engineering

基　　金：国家高技术研究发展计划(863计划)(2012AA050209)~~

摘　　要：为了利用高压直流(HVDC)输电系统功率调制能力提高多直流互联系统的稳定性,提出了一种全新的、可以适用于各种拓扑模型的多直流系统数学描述方法,在此基础上,基于快速耗散系统暂态能量的原则,提出了一个多直流附加暂态稳定控制策略,并在一个四区域三直流系统中详细分析了该控制策略在不同暂态稳定模式下的适应性。分析结果表明:当故障位置、拓扑结构或运行方式等变化引起系统稳定模式改变时,该多直流附加暂态稳定控制策略投入后均能明显提高系统的暂态稳定水平,对不同稳定模式具有良好的适应性。In order to enhance the stability of a multi high voltage direct current （HVDC） transmission system by taking advantage of HVDC power modulation ability, we put forward a kind of brand-new mathematical description method for the topology structure of a multi-HVDC system, and proposed a control strategy of multi-HVDC additional transient sta- bility based on the topological relationship and the principle of system transient energy rapid dissipation. Then, we discussed the adaptability of the proposed control strategy in detail in a simulation model with 4 groups and 3 HVDC lines. The analysis results show that the proposed control strategy can significantly improve the transient stability of the system, and has a good adaptability to different transient stability modes caused by the change of the failure situation or the variety of topology structure and operation.

关 键 词：多直流系统 附加暂态稳定控制 拓扑结构 稳定模式 暂态能量函数 

分 类 号：TM721.1[电气工程—电力系统及自动化]