基于相关性分析的OLTC运行状态评价方法研究  

Study of OLTC running state evaluation method based on correlation analysis

作　　者：王开明[1] 束洪春[2] 曹立平[2] 董俊[2] 苏应敢[1] 崔政[1] 

机构地区：[1]云南电网公司西双版纳供电局,云南西双版纳666100 [2]昆明理工大学,云南昆明650504

出　　处：《电力系统保护与控制》2015年第19期54-59,共6页Power System Protection and Control

摘　　要：在有载调压变压器分接开关(OLTC)动作过程中,监测驱动电机电流信号和切换振动信号并对其进行处理。通过分析信号与OLTC运行状态的关联关系,选取能显著反映OLTC运行状态的重要指标量,并将其处理形成基于正常运行标准值的标准化后的相对值。以每次监测获得的一组指标量为一个样本,通过采集样本与正常样本间的相关性分析,或两组以上的样本中某两个关注样本之间的偏相关性分析,得到相关系数或偏相关系数。以相关系数或偏相关系数作为OLTC运行状态评价的重要参考指标,判断OLTC运行的正常与否及运行状态变化趋势。In the process of OLTC switch, monitor and process OLTC＇s drive motor current signal and switch vibration signal. Through the correlation analysis of signal and the running state of the OLTC, indexes are used to reflect the running status of OLTC significantly, and its relative quantitative values can be formed basing on the normal operation standardization. A set of indexes is a sample, and through the analysis of the correlation between the sample and a sample of normal, or through the partial correlation analysis of two samples between more than two sets of samples, the correlation coefficient and the partial correlation coefficient can be acquired. The correlation coefficient and the partial correlation coefficient are important reference indexes for evaluating OLTC running status and judging the OLTC running state change trend.

关 键 词：有载调压分接开关 相关性分析 指标量 评价方法 运行状态 

分 类 号：TM403.4[电气工程—电器]