| 引用本文: | 王开明,束洪春,曹立平,等.基于相关性分析的OLTC运行状态评价方法研究[J].电力系统保护与控制,2015,43(19):54-59.[点击复制] |
| WANG Kaiming,SHU Hongchun,CAO Liping,et al.Study of OLTC running state evaluation method based on correlation analysis[J].Power System Protection and Control,2015,43(19):54-59[点击复制] |
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| 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。 |
| 关键词: |
| DOI：10.7667/j.issn.1674-3415.2015.19.009 |
| 投稿时间：2014-12-25修订日期：2015-03-03 |
| 基金项目: |
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| Study of OLTC running state evaluation method based on correlation analysis |
| WANG Kaiming,SHU Hongchun,CAO Liping,DONG Jun,SU Yinggan,CUI Zheng |
| (Xishuangbanna Power Supply Bureau,Yunnan Power Grid Company, Xishuangbanna 666100, China;Kunming University of Science and Technology, Kunming 650504, China) |
| Abstract: |
| 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. |
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