文章摘要
基于网络等值的直流配用电系统可靠性评估方法研究
Reliability Evaluation of DC Distribution System Considering Reliability Network Equivalent
投稿时间:2020-01-22  修订日期:2020-04-20
DOI:
中文关键词: 直流配用电系统  网络等值  可靠性评估  辐射型配电系统
英文关键词: 
基金项目:
作者单位邮编
张军六 国网山西省电力公司 030001
王金浩 山西省电力公司电力科学研究院 030001
常潇 山西省电力公司电力科学研究院 030024
赵军 山西省电力公司电力科学研究院 030024
郭宇刚 太原理工大学 030024
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中文摘要:
      随着直流负荷容量的快速增加,配电系统亟待调整网络结构,可靠地为直流负荷供电。当前普遍采用的直流负荷供电方式有两种:交流配电系统的直流化和新建直流配用电系统。针对上述两种供电方案,本文提出基于网络等值的直流配用电系统可靠性评估方法,与传统故障模式后果分析法(FMEA)相比,该方法避免了配电系统故障状态重复、繁琐的枚举过程,在提升可靠性评估效率的同时,最大限度地确保了可靠性评估结果的准确性。算例分析基于IEEE-RBTS测试系统,通过对测试系统的分解、负荷点可靠性评估以及配用电系统可靠性评估等步骤,从评估效率和准确度两个层面验证了所提方法的实用性,并在此基础上评估上述两种直流负荷供电方式的可靠性。研究结果表明:直流配用电系统的可靠性远高于交流系统的直流化改造。因此,面对快速增长的直流负荷,建议以新建直流配用电系统的方式为直流负荷供电。
英文摘要:
      With the increasing demand of DC load, the topology of distribution system needs to be reconstructed in order to improve the reliability of distribution system. There are two main ways to construct DC distribution system in the present situation, including upgrading AC distribution system and constructing DC distribution system. Aiming at the above two main ways, this paper proposed a novel method based on reliability network equivalent approach. Compare with the traditional FMEA method, the proposed approach not only greatly reduce the calculation burden, but also ensure the accuracy of reliability evaluation results. The case study is carried out based on IEEE-RBTS test system. The availability of the proposed method is authenticated from the aspects of accuracy and efficiency through the following three steps, discomposing DC distribution system, load-point reliability evaluation and distribution system reliability evaluation. The reliability evaluation results based on the above two ways show that the construction of DC distribution system is with a higher reliability performance compare with the upgrading AC distribution system. Therefore, facing the rapid growth of DC load, the construction of DC distribution system is recommended to satisfy the DC load demand.
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