摘要
针对二次设备状态评价的特点,提出了基于变权物元可拓的二次设备状态综合评价模型。结合物元可拓理论,确立二次设备的状态信息经典域,建立状态参量物元矩阵。同时,充分考虑权重确定过程的主观性,运用变权理论对各评价指标的权重进行修正,并比较了三种权重确定方法。结果表明,变权法对异常指标具有放大作用,更加符合设备管理要求。最后引入贴近度函数对二次设备的状态进行综合评判。以某220 k V变电站某二次装置为例,评价结果显示设备处于注意状态,偏向异常状态的程度较大,结果基本符合设备实际运行情况,从而验证了该方法的正确性。
This paper proposes secondary device status evaluation comprehensive model based on variable weights matter-element extension aiming at characteristics of the secondary device status evaluation. A secondary device status information classical field is established to get state parameters matrix. At the same time, state parameters＇ weights are corrected by using variable weights theory to overcome the subjective factors of traditional method, three kinds of weight determination method are compared, the results indicate that variable weighting method enlarges anomaly index to make evaluation result worse, which is in line with the device management requirements. Finally, closeness degree is also introduced to judge the condition of the secondary device comprehensively. A secondary device in an 220 kV substation is evaluated using this method, the result shows that the device is in the state of attention, tending to a greater degree of abnormal state, which is consistent with actual operation status of the device, verifying the correctness of the method.
作者
刘映尚
陶文伟
周凯
叶艳军
李金
徐鹏
LIU Yingshang TAO Wenweil ZHOU Kai YE Yanjun LI Jin XU Peng(China Southern Power Grid, Guangzhou 510623, China School of Electrical Engineering, Wuhan University, Wuhan 430072, China Beijing Sifang Automation Co., Ltd., Beijing 100085, China)
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2017年第8期80-85,共6页
Power System Protection and Control
基金
中国南方电网公司科技项目(K-ZD2014-011)
关键词
变权理论
物元可拓模型
二次设备状态评价
贴近度
敏感度分析
variable weight theory
matter-element extension model
secondary equipment state evaluation
closeness degree
sensitivity analysis
