The total accommodation capability curve for a distribution network considering N-1 criterion

IF 4.2 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Electric Power Systems Research Pub Date : 2025-02-12 DOI:10.1016/j.epsr.2025.111508

Jun Xiao , Luyan Xue , Xun Jiang , Chuanqi Wang , Haishen Liang , Kangli Wang

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Abstract

The total accommodation capability curve (TAC curve) can completely describe the DG accommodation capability of a distribution network. The urban distribution network generally adopts the security constraints under N-1 criterion, but the formulation of the TAC curve in the existing studies only considers the network constraints under normal operation conditions considering N-0 criterion. To fill this gap, this paper develops a TAC curve model considering security constraints under N-1 criterion in distribution networks. The model is based on alternating current (AC) power flow because the problem of voltage override after DG integration cannot be ignored. Then, the solution and plotting method of the TAC curve are proposed. The method is based on the DC power flow model combined with voltage calibration correction, which is easy to solve and accurate. Finally, test systems are used to verify the proposed model and method. The rules between the N-1 TAC curve and the N-0 TAC curve and the main factors affecting the TAC curve are analyzed. The application of the TAC curve to planning is also provided.

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考虑N-1准则的配电网总适应能力曲线

总容留能力曲线（TAC曲线）可以较完整地描述配电网容留DG的能力。城市配电网一般采用N-1准则下的安全约束，而现有研究中TAC曲线的表述仅考虑N-0准则下正常运行条件下的网络约束。为了填补这一空白，本文建立了考虑N-1准则下配电网安全约束的TAC曲线模型。该模型基于交流潮流，因为DG集成后的电压覆盖问题不容忽视。然后，给出了TAC曲线的求解方法和作图方法。该方法以直流潮流模型为基础，结合电压标定校正，求解简单，精度高。最后，通过测试系统对所提出的模型和方法进行了验证。分析了N-1 TAC曲线与N-0 TAC曲线的变化规律及影响TAC曲线的主要因素。本文还提供了TAC曲线在规划中的应用。

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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.