Multi-Period Resilient Model for VSC-Based AC-DC HDS Considering Public-Safety Power Shutoff to Mitigate Wildfires

IF 6.9 2区 工程技术 Q2 ENERGY & FUELS
Zekai Wang;Tao Ding;Xiaosheng Zhang;Chenggang Mu;Pengwei Du;Fangxing Li
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引用次数: 0

Abstract

This paper proposes a voltage source converter (VSC) -based AC-DC hybrid distribution system (HDS) resilient model to mitigate power outages caused by wildfires. Before a wildfire happens, the public-safety power shutoff (PSPS) strategy is applied to actively cut some vulnerable lines which may easily cause wildfires, and reinforce some lines that are connected to critical loads. To mitigate load shedding caused by active line disconnection in the PSPS strategy, network reconfiguration is applied before the wildfire occurrence. During the restoration period, repair crews (RCs) repair faulted lines, and network reconfiguration is also taken into consideration in the recovery strategy to pick up critical loads. Since there exists possible errors in the wildfire prediction, several different scenarios of wildfire occurrence have been taken into consideration, leading to the proposition of a stochastic multi-period resilient model for the VSC-based AC-DC HDS. To accelerate the computational performance, a progressive hedging algorithm has been applied to solve the stochastic model which can be written as a mixed-integer linear program. The proposed model is verified on a 106-bus AC-DC HDS under wildfire conditions, and the result shows the proposed model not only can improve the system resilience but also accelerate computational speed.
考虑公共安全停电以缓解野火的基于 VSC 的交直流 HDS 多周期弹性模型
本文提出了一种基于电压源转换器(VSC)的交直流混合配电系统(HDS)弹性模型,以缓解野火造成的停电问题。在野火发生之前,采用公共安全断电(PSPS)策略,主动切断一些容易引发野火的脆弱线路,并加固一些与关键负载相连的线路。为减轻 PSPS 策略中主动切断线路造成的负荷中断,在野火发生前会进行网络重新配置。在恢复期间,抢修人员(RC)会修复故障线路,恢复策略中也会考虑网络重新配置,以恢复关键负载。由于野火预测可能存在误差,因此考虑了几种不同的野火发生情况,从而为基于 VSC 的交直流 HDS 提出了一个随机多期弹性模型。为了加快计算速度,我们采用了渐进式对冲算法来求解随机模型,该模型可以写成一个混合整数线性程序。所提出的模型在野火条件下的 106 总线交直流 HDS 上进行了验证,结果表明所提出的模型不仅能提高系统的恢复能力,还能加快计算速度。
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
CiteScore
11.80
自引率
12.70%
发文量
389
审稿时长
26 weeks
期刊介绍: The CSEE Journal of Power and Energy Systems (JPES) is an international bimonthly journal published by the Chinese Society for Electrical Engineering (CSEE) in collaboration with CEPRI (China Electric Power Research Institute) and IEEE (The Institute of Electrical and Electronics Engineers) Inc. Indexed by SCI, Scopus, INSPEC, CSAD (Chinese Science Abstracts Database), DOAJ, and ProQuest, it serves as a platform for reporting cutting-edge theories, methods, technologies, and applications shaping the development of power systems in energy transition. The journal offers authors an international platform to enhance the reach and impact of their contributions.
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