电器与能效管理技术 ›› 2023, Vol. 0 ›› Issue (6): 9-17.doi: 10.16628/j.cnki.2095-8188.2023.06.002

• 研究与分析 • 上一篇    下一篇

计及节点故障率的微电网μPMU多目标优化配置策略

施泽慧, 牟龙华   

  1. 同济大学 电气工程系, 上海 201804
  • 收稿日期:2022-09-01 出版日期:2023-06-30 发布日期:2023-08-15
  • 作者简介:施泽慧(1996—),女,硕士研究生,研究方向为微电网μPMU优化配置与故障定位。|牟龙华(1963—),男,教授,博士生导师,研究方向为电力系统继电保护、分布式发电与微电网、电能质量。
  • 基金资助:
    上海市科学技术委员会项目(21142201200)

μPMU Multi-Objective Optimal Configuration Strategy for Microgrid Considering Node Failure Rate

SHI Zehui, MU Longhua   

  1. Department of Electrical Engineering,Tongji University,Shanghai 201804,China
  • Received:2022-09-01 Online:2023-06-30 Published:2023-08-15

摘要:

微电网动态行为相较传统电网更为复杂,亟须解决其故障检测和定位问题。针对微电网系统中微型同步相量测量单元(μPMU)的优化配置问题进行研究,提出了计及成本、节点故障率和冗余度的μPMU多目标优化配置策略。以μPMU装设成本最低、节点故障率总和最高、可观冗余度最高为多目标函数,在考虑零注入节点的基础上,根据系统正常状态和任意线路故障下的约束条件,建立了多目标优化配置模型。采用差分进化算子对非支配排序遗传算法(NSGA-Ⅱ)进行改进,并用改进后的算法对模型进行求解,选择出最优折中解。基于改进的IEEE 30节点微电网系统进行仿真分析,仿真结果表明,计及节点故障率的多目标优化配置策略是可行的。所提策略能够有效地对微电网系统进行全网可视化监测,并兼顾经济性和准确性。

关键词: 微电网, 微型同步相量测量单元, 优化配置策略, 节点故障率, 冗余度

Abstract:

The dynamic behavior of microgrid is more complex than that of traditional power grid, so it is urgent to solve the problem of fault detection and location. The optimization configuration of micro phasor measurement unit (μPMU) in microgrid system is studied. A multi-objective optimal μPMU configuration strategy considering cost, node failure rate and redundancy is proposed. Based on the multi-objective function of the lowest installation cost, the highest sum of node failure rate and the highest observable redundancy, a multi-objective optimal configuration model is established according to the normal state of the system and the constraints of arbitrary line faults. The nondominated sorting genetic algorithm Ⅱ (NSGA-Ⅱ) is improved by differential evolution operator, and the improved algorithm is used to solve the model and select the optimal compromise solution. Based on the improved IEEE 30-node microgrid system simulation analysis, it is shown that the multi-objective optimal configuration strategy taking into account the node failure rate is feasible. The proposed strategy can effectively carry out the whole network visualized monitoring of the microgrid system and give consideration to the economy and accuracy.

Key words: microgrid, micro phasor measurement unit(μPMU), optimal configuration strategy, node failure rate, redundancy

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