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基于离散弗雷歇距离的户变关系识别方法
作者:
作者单位:

1.四川中电启明星信息技术有限公司,四川省成都市 610041;2.四川大学电气工程学院, 四川省成都市 610065

摘要:

针对高速电力线载波(HPLC)户变关系识别中的电表时钟漂移与共用零线台区识别信号串扰问题,提出了一种基于离散弗雷歇距离的户变关系识别方法。首先,构建配电台区户变关系辨识方法,在电压过零点时刻,向低压线路叠加改进多载波调频特征识别信号进行户变关系识别;其次,构建辨识特征数据清洗方法,消除辨识特征数据时间轴偏移对户变关系识别的影响;再次,构建户变关系校验方法,采用离散弗雷歇距离比较电表之间的电压曲线相似度,从而形成准确的户变关系,并建立配电台区由近及远的户变关系分布矩阵;最后,对四川某配电物联网示范区的现场应用结果表明,所述方法较HPLC户变关系识别准确度更高。

关键词:

基金项目:

国家电网有限公司科技项目(202058184A);已申请国家发明专利(申请号:202010544164.6,202010546616.4)。

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作者简介:


Identification Method for Relationship Between Household Transformers Based on Discrete Frechet Distance
Author:
Affiliation:

1.Aostar Information Technology Co., Ltd., Chengdu 610041, China;2.School of Electrical Engineering, Sichuan University, Chengdu 610065, China

Abstract:

Aiming at the problem of clock drift of meters and identification signal crosstalk of common null line in the distribution station area in the identification of relationship between household transformers by high-speed power line carrier (HPLC), an identification method for the relationship between household transformers based on discrete Frechet distance is proposed. Firstly, the identification method for the relationship between household transformers in the distribution station area is constructed. At the moment of voltage zero crossing, the improved identification signal of multicarrier frequency regulation characteristic is superimposed on the low-voltage line to identify the relationship between household transformers. Secondly, the cleaning method for the identification characteristic data is constructed to eliminate the influence of the time axis offset in the identification characteristic data on the identification of relationship between household transformers. Thirdly, the verification method for the relationship between household transformers is constructed. The discrete Frechet distance is used to compare the voltage curve similarity between meters, so as to form accurate relationship between household transformers. The distribution matrix of relationship between household transformers from near to far in the distribution station area is then established. Finally, the field application results of a distribution Internet of Things demonstration area in Sichuan Province show that the proposed method is more accurate than HPLC in the identification of relationship between household transformers.

Keywords:

Foundation:
This work is supported by State Grid Corporation of China (No. 202058184A).
引用本文
[1]唐冬来,倪平波,张捷,等.基于离散弗雷歇距离的户变关系识别方法[J/OL].电力系统自动化,http://doi. org/10.7500/AEPS20200704003.
TANG Donglai, NI Pingbo, ZHANG Jie, et al. Identification Method for Relationship Between Household Transformers Based on Discrete Frechet Distance[J/OL]. Automation of Electric Power Systems, http://doi. org/10.7500/AEPS20200704003.
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  • 收稿日期:2020-07-04
  • 最后修改日期:2021-01-05
  • 录用日期:2020-11-17
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