A four sample approach to determine the fault location in MTDC network

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Electric Power Systems Research Pub Date : 2025-05-10 DOI:10.1016/j.epsr.2025.111801

Praveen Kumar Gupta, Subhransu Ranjan Samantaray

引用次数: 0

Abstract

The paper introduces a method for determining fault location in Multi-Terminal DC (MTDC) network addressing the challenges posed by limited post-fault data availability due to fast fault isolation in MTDC network. Proposed method operates efficiently at low sampling frequency of 20 kHz and requires only four samples i.e.0.2 ms data window, including 0.1 ms post-fault data. It determines surge arrival time using change in current (ΔI), eliminating the need of wavefront identification. The method is evaluated on 400 km and 200 km transmission lines with fault resistances ranging from 0.1 Ω to 500 Ω. Additionally, it integrates seamlessly with network protection schemes and demonstrates strong noise immunity. Moreover, the method is validated using Real-Time Digital Simulator (RTDS) confirming its robustness and accuracy. This makes it a practical solution for determining fault location in MTDC network.

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MTDC网络故障定位的四样例方法

介绍了一种多终端数据中心（MTDC）网络故障定位方法，解决了MTDC网络快速故障隔离导致故障后数据可用性受限的问题。该方法在20 kHz的低采样频率下有效地工作，仅需4个采样点，即0.2 ms的数据窗口，其中包括0.1 ms的故障后数据。它使用电流变化（ΔI）来确定浪涌到达时间，从而消除了波前识别的需要。该方法在故障电阻为0.1 Ω ~ 500 Ω的400 km和200 km输电线路上进行了评价。与网络保护方案无缝集成，抗噪能力强。通过实时数字仿真（RTDS）验证了该方法的鲁棒性和准确性。这为MTDC网络故障定位提供了一种实用的解决方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.