The impact of protection devices on the availability of low-voltage direct current microgrids

IF 9.4 1区工程技术 Q1 ENGINEERING, INDUSTRIAL

Reliability Engineering & System Safety Pub Date : 2025-05-17 DOI:10.1016/j.ress.2025.111190

Glenn Emmers , Tom Van Acker , Simon Ravyts , Johan Driesen

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Abstract

This paper presents a method to determine the impact of low-voltage direct current circuit breakers on the availability of the dc bus. Low-voltage direct current is gaining traction in industry, and protection is an important aspect. New circuit breaker technologies are extensively researched, but the impact of the speed of interruption on direct current bus availability has not yet been investigated. This paper demonstrates how to determine the fault clearance probability, which is used to set up state transition diagrams for the feeder states. These state transition diagrams are solved using the semi-Markov process. The solutions of the semi-Markov process are used in the UGO method to determine the availability of the direct current bus. Furthermore, the results depend on the length of the feeder, the capacitance of the direct current bus and the minimum allowed voltage. For feeders with a fault clearance probability lower than 100%, the number of feeders also influences the availability of the direct current bus.

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保护装置对低压直流微电网可用性的影响

本文提出了一种确定低压直流断路器对直流母线可用性影响的方法。低压直流电在工业上越来越受到重视，保护是其中的一个重要方面。新的断路器技术得到了广泛的研究，但断路器的中断速度对直流母线可用性的影响尚未得到研究。本文阐述了如何确定故障清除概率，并将其用于建立馈线状态的状态转换图。利用半马尔可夫过程求解这些状态转移图。在UGO方法中利用半马尔可夫过程的解来确定直流母线的可用性。此外，结果取决于馈线的长度，直流总线的电容和最小允许电压。对于故障清除率低于100%的馈线，馈线数量也会影响直流母线的可用性。

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

Reliability Engineering & System Safety 管理科学-工程：工业

CiteScore

15.20

自引率

39.50%

发文量

621

审稿时长

67 days

期刊介绍： Elsevier publishes Reliability Engineering & System Safety in association with the European Safety and Reliability Association and the Safety Engineering and Risk Analysis Division. The international journal is devoted to developing and applying methods to enhance the safety and reliability of complex technological systems, like nuclear power plants, chemical plants, hazardous waste facilities, space systems, offshore and maritime systems, transportation systems, constructed infrastructure, and manufacturing plants. The journal normally publishes only articles that involve the analysis of substantive problems related to the reliability of complex systems or present techniques and/or theoretical results that have a discernable relationship to the solution of such problems. An important aim is to balance academic material and practical applications.