摘要
针对以往的基于电气距离的电网自动电气分区方法无法处理分裂运行的厂站以及无初始地理分区厂站的不足,提出一种计及分裂运行和无初始地理分区厂站的电网自动电气分区方法。该方法将分裂运行的厂站在拓扑上进行分割,重新建立几个独立的厂站,并建立这些新产生的厂站与电网中其他厂站间的拓扑连接关系,更加真实准确反映电网实时的运行状态;同时,利用无初始地理分区厂站和各个初始地理分区之间的平均电气距离和功率传输量作为判据将无初始地理分区的厂站并入到联系最紧密的初始地理分区中,考虑了完整的电网模型,使得电网自动电气分区结果更加真实可信。利用广东省电网的算例测试表明:该方法准确考虑了厂站分裂运行的情况,并考虑到了所有投入运行的厂站,电网电气分区结果与运行人员的经验相符,结果真实可信。
As substations in split operation mode as well as stations without initial geography zone can＇t be considered and treated in the previous automatic discovery method of power system electrical zones based on electrical distance, an automatic discovery method of power system electrical zones considering stations in split operation mode as well as stations without initial geography zone is proposed. Through dividing the substation in split operation mode into several new stations and rebuilding the topological connections between the several new substations and other stations in power system, the real-time operation status of power grid can be reflected more accurately. According to the average electrical distance and power transmission between stations without initial geography zone and geography zones in power system, stations without initial geography zone are put into the initial geography zones with closest connections, which makes the automatic discovery of power system electrical zones more reliable. A test case is done in Guangdong Power Grid of China. The results show that the proposed method considers the real split operation status of substations accurately, covers all of the stations, and the results of electrical zones agree with that of the experience of operators, so the results are reliable.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2014年第6期33-38,共6页
Power System Protection and Control
基金
国家杰出青年科学基金(51025725)
广东电网公司科技项目(K-GD2012-303)~~
关键词
电力系统
分裂运行厂站
无初始地理分区厂站
自动电气分区
power system
stations in split operation mode
stations without initial geography zone
automatic discovery of powersystem electrical zones
