Risk assessment of integrated transmission and distribution systems considering load transfer

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

Electric Power Systems Research Pub Date : 2024-11-13 DOI:10.1016/j.epsr.2024.111205

Jiangang Lu , Ruifeng Zhao , Zufeng Hou , Guihui Lin , Yong Zhang , Chao Wang , Kaiyan Pan , Haixin Liu

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引用次数: 0

Abstract

Integrated transmission and distribution system (ITDS) analysis is gaining increasing attention from academics and industry. Load transfer, a critical factor in maintaining system reliability and reducing system risk during outages, is often overlooked in conventional system risk assessment. This paper proposes a framework that incorporates load transfer capabilities into ITDS modeling, enabling a comprehensive evaluation of its impact on risk mitigation. The framework integrates the uncertainty of electricity demand, initial outages suggested by contingency motifs, and detailed ITDS models. A centralized model using mixed-integer conic programming is formulated to identify optimal load transfer strategies. Recognizing the typical operational separation of transmission and distribution systems, a practical two-stage optimization method with limited information exchange is also proposed to determine degraded system states. Case studies demonstrate that incorporating load transfer can significantly reduce system risk, underscoring the importance of integrating this capability into risk assessments and operational strategies.

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考虑负荷转移的综合输配电系统风险评估

综合输配电系统 (ITDS) 分析越来越受到学术界和工业界的关注。负荷转移是维持系统可靠性和降低停电期间系统风险的关键因素，但在传统的系统风险评估中往往被忽视。本文提出了一个将负荷转移功能纳入 ITDS 建模的框架，从而能够全面评估负荷转移对降低风险的影响。该框架整合了电力需求的不确定性、应急模式建议的初始停电以及详细的 ITDS 模型。利用混合整数圆锥编程建立了一个集中模型，以确定最佳负荷转移策略。考虑到输电和配电系统的典型运行分离，还提出了一种实用的两阶段优化方法，通过有限的信息交换来确定退化的系统状态。案例研究表明，将负荷转移纳入系统可显著降低系统风险，从而强调了将这种能力纳入风险评估和运营战略的重要性。

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

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.