| 引用本文: | 刘健,陈鲁鹏,张志华.基于本地量测信息的配电变压器静态参数估计[J].电力自动化设备,2021,41(2): |
| LIU Jian,CHEN Lupeng,ZHANG Zhihua.Static parameter estimation for distribution transformer based on local measurement information[J].Electric Power Automation Equipment,2021,41(2): |
|
| 摘要: |
| 为了能够准确、有效地掌握配电变压器的在线运行状态，并及时、正确地评估其健康状况，利用监测装置采集到的配电变压器本地高/低压侧的量测数据，在本地对其静态参数进行可测性估计，遴选有效量测方程辨识配电变压器的静态参数，以此来判断配电变压器的运行状况。算例结果表明：以量测数据之间的距离为标准遴选量测方程辨识得到的配电变压器静态参数估计值的质量更佳，并且参数辨识结果对变压器静态参数的在线动态监测和故障诊断具有应用参考价值。 |
| 关键词: 配电变压器 静态参数 参数估计 可测性 在线监测 |
| DOI：10.16081/j.epae.202101002 |
| 分类号:TM41;TM727 |
| 基金项目:国家自然科学基金委员会-国家电网公司智能电网联合基金资助项目(U1766208) |
|
| Static parameter estimation for distribution transformer based on local measurement information |
|
LIU Jian1,2, CHEN Lupeng1, ZHANG Zhihua1,2
|
|
1.School of Electrical Engineering, Xi’an University of Technology, Xi’an 710054, China;2.State Grid Shaanxi Electric Power Research Institute, Xi’an 710100, China
|
| Abstract: |
| In order to grasp the online operation state of distribution transformer accurately and effectively, and evaluate its health conditions timely and correctly, the testability of static parameters for distribution transformer is estimated locally by using the measurement data of high and low voltage sides of the distribution transformer, which is acquired from monitoring devices. Meanwhile, these static parameters are identified by selecting effective measurement equations, so as to judge the operation state of distribution transformer. The case results show that the selection of measurement equations based on the distance between measurement data can receive better quality of static parameter estimation for distribution transformer. In addition, the identification results have application reference value for the online dynamic monitoring and fault diagnosis of transformer static parameters. |
| Key words: distribution transformer static parameters parameter estimation testability online monitoring |
