负荷突变与拓扑错误及坏数据三者交叠情况下的识别问题  

THE IDENTIFICATION OF THREE SIMULTANEOUS ANORMALIES OF SUDDEN LOAD CHANGE AND TOPOLOGY ERROR AND BAD DATA

作　　者：周苏荃[1] 柳焯[1] 

机构地区：[1]哈尔滨工业大学电气工程系,哈尔滨150001

出　　处：《中国电机工程学报》2002年第6期6-10,共5页Proceedings of the CSEE

基　　金：国家自然科学基金项目 (50177006);清华大学电力系统国家重点实验室开放基金项目。

摘　　要：利用新息矢量和连支推算新息矢量差值形成的新息差矢量,可检测负荷突变的出现。这是识别负荷突变、拓扑错误和坏数据三者交叠问题的基础。当新息差矢量中检测出一些绝对值较大且大小相近的元素时,如果他们对应的树支和平衡机树支以及有问题的某一接地连支形成回路,在新息差图中出现突变回路,即可识别出与该接地连支相连的节点为负荷突变的节点。以此为基础,根据负荷突变的大小更正连支推算新息矢量后, 可进一步识别坏数 据和拓扑错误,从而解决负荷突变、拓扑错误和坏数据三者交叠情况下的识别问题。The sudden load changes can be detected byusing the innovation difference vector formed by innovation vector minus link reckoning innovation vector, which is thefoundation of identifying three simultaneous anomalies ofsudden state change, topology error and bad data. If someinnovation difference vector elements of large and nearly equal absolute values are detected, and if their corresponding treebranches together with the grounding tree branch of the swing bus and a grounding link branch form a loop, the loop is called the sudden load change loop. In the innovation difference graphthe bus connected to the grounding link branch of this sudden load change loop can be identified as sudden state change bus.Based on this, the topology error and bad data can be identified after the link reckoning innovation vector is verified according to the value of sudden load change. In this way, the problem of identifying three simultaneous anomalies of sudden load change, topology error and bad data can be solved.

关 键 词：负荷突变 拓扑错误 坏数据 识别 电力系统 状态估计 新息图 

分 类 号：TM711[电气工程—电力系统及自动化]