大容量新型调相机关键技术参数及其优化设计  

Key Technical Parameters and Optimal Design of New Types of Large Capacity Synchronous Condenser

作　　者：李志强[1] 蒋维勇[2] 王彦滨[3] 李文锋[1] 李朝科 咸哲龙 LI Zhiqiang;JIANG Weiyong;WANG Yanbin;LI Wenfeng;LI Chaoke;XIAN Zhelong(China Electric Power Research Institute, Beijing 100192, China;State Power Economic Research Institute, Beijing 102209, China;Harbin Electric Machinery Co., Ltd., Harbin 150040, China;Dongfang Electric Corporation Dongfang Electric Machinery, Deyang 618000, China;Shanghai Electric Power Generation Equipment Co., Ltd., Shanghai Generator,Shanghai 200240, China)

机构地区：[1]中国电力科学研究院,北京100192 [2]国网北京经济技术研究院,北京102209 [3]哈尔滨电机厂有限责任公司,哈尔滨150040 [4]东方电气集团东方电机有限公司,四川德阳618000 [5]上海电气电站设备有限公司上海发电机厂,上海200240

出　　处：《大电机技术》2017年第4期15-22,共8页Large Electric Machine and Hydraulic Turbine

基　　金：国家电网公司总部科技项目;特大型城市和主要负荷中心电压稳定性及动态无功补偿优化措施研究(XT71-15-026);国家电网公司2014年基础性前瞻性科技项目(XT71-14-006)

摘　　要：大容量新型调相机旨在满足特高压直流输电大规模发展带来的强大的系统动态无功需求,因此其电气参数必然不同于以稳态无功补偿为主的传统调相机。本文通过系统分析各电气参数对调相机暂态及次暂态特性的影响,提炼出调相机动态性能优化的关键技术参数和措施,即尽可能降低直轴次暂态电抗X"_d和主变短路电抗X_k,减小直轴开路及短路时间常数T'_(d0)和T'_d,并将励磁系统强励倍数提高至3.5倍。同时对调相机的具体优化设计方案给出了建议。As new types of large capacity synchronous condensers are designed to satisfy the strong demand of dynamic reactive power support for power system,which is brought about by large-scale development of the ultra high voltage direct current(UHVDC)transmission,the electrical parameters must be different from the traditional condensers used for steady-state reactive power compensation.Through systematic analysis of the effect of electrical parameters on transient and sub-transient characteristics of synchronous condensers,key technical parameters and measures for optimizing the dynamic performance of synchronous condenser are induced,i.e.reducing the direct axis sub-transient reactance Xd?and the transformer short-circuit reactance Xk as far as possible,decreasing the direct axis unload and short circuit time constant of Td?0and Td?,increasing the ceiling voltage of exciting system to3.5times.Meanwhile,specific suggestions for optimal design of synchronous condensers are proposed as well.

关 键 词：调相机 动态无功 关键技术参数 优化设计 

分 类 号：TM342[电气工程—电机]