A method for assessing and locating protection measurement loop errors based on an improved similarity algorithm

IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Zong Jun Mu, Deng Xin Liu, Bin Hu, Zhen Li
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引用次数: 0

Abstract

It is of importance to detect and locate the errors of the protection measurement loop of the relay protection device for ensuring correct and timely functioning. The complex and changeable power system environment makes error detection and localization challenging. To this end, this paper proposes an entropy weight method-Euclidean distance and Tanimoto similarity (EWM-EDTS)-based method that integrates Euclidean distance and Tanimoto similarity with the entropy weight method. The Euclidean distance algorithm and Tanimoto similarity algorithm are used to calculate and obtain the similarity values between two sequences of samples and then the entropy weight method is used to calculate the weighting coefficients to fuse the two sequences of similarity values to finally obtain the EWM-EDTS distance. By comparing the value of the EWM-EDTS distance with the distance threshold, potential errors in the measurement data can be accurately located and identified. The simulation based on PSCAD shows that the proposed method can significantly improve the accuracy of error detection and localization.

Abstract Image

基于改进的相似性算法的保护测量回路误差评估和定位方法
检测和定位继电保护装置保护测量回路的误差对于确保正确及时地运行非常重要。复杂多变的电力系统环境给误差检测和定位带来了挑战。为此,本文提出了一种基于熵权法-欧氏距离和谷本相似性(EWM-EDTS)的方法,该方法将欧氏距离和谷本相似性与熵权法整合在一起。利用欧氏距离算法和谷本相似性算法计算并获得两个样本序列之间的相似性值,然后利用熵权法计算加权系数,将两个序列的相似性值进行融合,最终得到 EWM-EDTS 距离。通过比较 EWM-EDTS 距离值和距离阈值,可以准确定位和识别测量数据中的潜在误差。基于 PSCAD 的仿真表明,所提出的方法可以显著提高误差检测和定位的准确性。
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来源期刊
Electrical Engineering
Electrical Engineering 工程技术-工程:电子与电气
CiteScore
3.60
自引率
16.70%
发文量
0
审稿时长
>12 weeks
期刊介绍: The journal “Electrical Engineering” following the long tradition of Archiv für Elektrotechnik publishes original papers of archival value in electrical engineering with a strong focus on electric power systems, smart grid approaches to power transmission and distribution, power system planning, operation and control, electricity markets, renewable power generation, microgrids, power electronics, electrical machines and drives, electric vehicles, railway electrification systems and electric transportation infrastructures, energy storage in electric power systems and vehicles, high voltage engineering, electromagnetic transients in power networks, lightning protection, electrical safety, electrical insulation systems, apparatus, devices, and components. Manuscripts describing theoretical, computer application and experimental research results are welcomed. Electrical Engineering - Archiv für Elektrotechnik is published in agreement with Verband der Elektrotechnik Elektronik Informationstechnik eV (VDE).
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