摘要
针对某电网跨省五回联络线出现负线损的问题,结合一次网架结构,研究分析其电气连接方式、运行环境等方面的共同特点,同步采集每一回联络线两侧关口计量点的P,Q,U和I实时运行数据,通过大量数据统计分析和运行环境仿真计算,选取具有代表性的线路作为研究对象,从计量系统综合误差、同塔电磁耦合影响潮流分布入手,分析负线损原因并提出解决问题的建议和办法。
In view of the problem of negative line losses in the power grid trans-provincial five link circuits, this paper combines with primary grid structure, studies and analyzes the common features of its electrical connections and operating environment, and simultaneously collects the real-time operational data for measuring points P, Q, U and I on both sides gateway of each link circuit. Through the statistic analysis of mass data and simulation calculations of operating environment, it selects the representative line as a research object, proceeds from the measurement system integrated error, the same tower electromagnetic coupling influencing the current distribution, analyzes the cause of negative line loss and proposes suggestions and countermeasures.
作者
陈文中
洪元瑞
张金丽
陈俊杰
柳永玉
冯茗俊
杜炯
CHEN Wenzhong;HONG Yuanrui;ZHANG Jinli;CHEN Junjie;LIU Yongyu;FENG Mingjun;DU Jiong(State Grid Electric Power Research Institute,SMEPC,Shanghai 200437,China;East China Branch,State Grid Corporation of China,Shanghai 200120,China;Shandong Taikai Instrument Transformer Co.,Ltd..Taiwan 271000,Shandong Province,China;State Grid Shinan Power Supply Company,SMEPC,Shanghai 2001100,China)
出处
《电力与能源》
2019年第6期704-706,716,共4页
Power & Energy
关键词
联络线路
负线损
计量误差
电磁耦合
应对策略
link circuit
negative line loss
measurement error
electromagnetic coupling
countermeasures
