摘要
±200 MVar STATCOM是迄今世界上最大容量的动态无功补偿设备,因其对电网电压支撑作用和较高的设备造价,需要深入探讨对换流器件和辅助设备保护策略,以确保设备安全可靠运行。文中在简要分析多级联H桥STATCOM主电路、H桥结构和元件特性的基础上,从装置级保护策略、功率单元保护策略和失灵保护策略3个方面,分析STATCOM在工程应用中的保护配置策略,并提出优化措施。保护配置策略的明晰和优化,对多H桥级联STATCOM工程应用有较大的指导意义。
±200 MVar STATCOM is by far the largest-capacity dynamic reactive power compensation device in the world.Because of the voltage-supporting function and higher cost,it is necessary to discuss protection strategies of commutation devices and auxiliary equipment;and then,to make it safety and reliable.In this paper,on the basic of analyzing main circuit design and H-bridge structure of cascaded STATCOM,select and discuss several aspects of relay-protection including device-level protection strategies of STATCOM,module-level protection strategies of STATCOM,breaker malfunction protection strategies;finally propose optimizations for protection scheme.A Clearer protection configuration and optimization strategies have a greater significance for multi-H-bridge cascade STATCOM in engineering applications.
出处
《南方能源建设》
2015年第B12期60-65,共6页
Southern Energy Construction
关键词
静止同步补偿器(STATCOM)
主电路分析
保护策略配置
保护优化
工程应用
static synchronous compensator（STATCOM）
main circuit analysis
relay-protection strategies
relay-protection optimi zation
engineering applications
