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首页> 外文期刊>Electric power systems research >Preventing transmission distance relays maloperation under unintended bulk DG tripping using SVM-based approach
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Preventing transmission distance relays maloperation under unintended bulk DG tripping using SVM-based approach

机译：使用基于SVM的方法防止意外的大容量DG跳闸导致传输距离继电器误操作

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摘要

With high penetration of distributed generation (DG) into distribution systems, an unintended bulk DG tripping as a consequence of severe disturbances such as 3-phase faults in the transmission system is a concern since it can further cause unintended operation of transmission distance relays. To address this matter, this paper presents a novel protection scheme based on support vector machine (SVM) approach. The proposed scheme detects bulk DG tripping following a fault in the power transmission system, and then makes sure there is no follow on distance relay maloperation. It is also able to detect a fault if it happens during the blocking period and hence unblock the relay operation correspondingly. Wide-area (WA) measurements obtained from phasor measurement units (PMUs) are used, in addition to local measurements, to improve the scheme selectivity. The New-England 39 bus system is used to test the proposed scheme. Simulation results are discussed and illustrated. (C) 2016 Elsevier B.V. All rights reserved.
机译：随着分布式发电（DG）高度渗透到配电系统中，由于严重的干扰（例如传输系统中的三相故障）而导致意外的大容量DG跳闸是一个令人关注的问题，因为它还会进一步导致传输距离继电器的意外运行。针对这一问题，本文提出了一种基于支持向量机（SVM）的保护方案。提出的方案可以检测到输电系统发生故障后，大量DG跳闸，然后确保距离继电器不会发生误动作。如果在阻塞期间内发生故障，它也能够检测到故障，从而相应地解除对继电器操作的阻塞。除局部测量外，还使用从相量测量单元（PMU）获得的广域（WA）测量来提高方案的选择性。新英格兰39总线系统用于测试所提出的方案。讨论并说明了仿真结果。 （C）2016 Elsevier B.V.保留所有权利。

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