基于网络等值的直流配用电系统可靠性评估方法研究
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TM76

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本文得到国网山西省电力公司科技项目(52053017000K)资助


Reliability evaluation of DC distribution system based on reliability network equivalent
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    摘要:

    当前普遍采用的直流负荷供电方案有2种:交流配用电系统的直流化和新建直流配用电系统。针对2种供电方案,文中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(FMEA)法相比,该方法避免配用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,最大限度地确保可靠性评估结果的准确性。基于IEEE-RBTS测试系统的算例研究结果表明,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,建议新建直流配用电系统为直流负荷供电。

    Abstract:

    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.Two main ways to construct DC distribution system in the present situation include upgrading AC distribution system and constructing DC distribution system.Aiming at above two main ways, novel method based on reliability equivalent network is proposed.Compared with traditional failture mode effect analysis(FMEA) method, the proposed approach not only greatly reduces the calculation burden, but also ensures 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 three steps, including discomposing DC distribution system, load-point reliability evaluation and distribution system reliability evaluation.The reliability evaluation results based on above two ways show that the construction of DC distribution system has higher reliability performance compared with 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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张军六,王金浩,常潇,赵军,郭宇刚.基于网络等值的直流配用电系统可靠性评估方法研究[J].电力工程技术,2020,39(5):107-112

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历史
  • 收稿日期:2020-03-05
  • 最后修改日期:2020-04-25
  • 录用日期:2020-04-22
  • 在线发布日期: 2020-09-30
  • 出版日期: 2020-09-28