A novel setting free approach to differentiate fault and power swing using support vector machine

IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Electrical Engineering Pub Date : 2024-07-26 DOI:10.1007/s00202-024-02614-2
Jeni Satheesh, V. Vinod, P. S. Shenil, P. R. Sunil Kumar
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Abstract

Undesired tripping may occur in protection relays due to the power swings leading to shutting down of power utility equipment. Conventionally, the rate of speed of the impedance locus measured by the relay is utilised to differentiate the fault and power swing. Nowadays, the inertia of the system is lowered due to the proliferation of distributed generators and therefore it is very difficult to adopt a threshold limit to distinguish the fault from power swing. A setting or threshold free approach based on support vector machine to detect power swing is proposed in this work. The prominent SVM feature like load angle calculated indirectly from relay impedance is a novel way adopted in this scheme. The remaining SVM features selected are also a good combination of statistical and electrical parameters. Results also show that the scheme is capable to identify both symmetrical and asymmetrical faults during power swing. All the simulated case studies are also tested in a transmission line prototype set-up in the laboratory.

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利用支持向量机区分故障和功率摆动的无设置新方法
由于功率波动会导致电力设备停机,继电保护装置可能会发生意外跳闸。传统的做法是利用继电器测量到的阻抗位置的速度来区分故障和功率波动。如今,由于分布式发电机的普及,系统的惯性降低,因此很难采用阈值限制来区分故障和功率波动。本研究提出了一种基于支持向量机的无阈值方法来检测功率波动。从继电器阻抗间接计算出的负载角等 SVM 重要特征是本方案采用的一种新方法。所选的其余 SVM 特征也是统计和电气参数的良好组合。结果还表明,该方案能够识别电力摆动过程中的对称和不对称故障。所有模拟案例研究还在实验室的输电线路原型设置中进行了测试。
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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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