电器与能效管理技术 ›› 2020, Vol. 593 ›› Issue (8): 1-6.doi: 10.16628/j.cnki.2095-8188.2020.08.001

• 研究与分析 •    下一篇

下垂控制微电源的故障控制策略及等效模型*

刘鑫, 牟龙华, 王俊凯   

  1. 同济大学 电气工程系,上海 201804
  • 收稿日期:2020-04-11 出版日期:2020-08-30 发布日期:2020-09-10
  • 作者简介:刘 鑫(1996—),女,硕士研究生,研究方向为分布式发电与微电网继电保护。|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。|王俊凯(1996—),男,硕士研究生,研究方向为分布式发电与微电网继电保护。
  • 基金资助:
    * 中央高校基本科研业务费专项资金资助(22120200230)

Fault Control Strategy and Equivalent Model of Droop Control Micro-Sources

LIU Xin, MU Longhua, WANG Junkai   

  1. Department of Electrical Engineering,Tongji University,Shanghai 201804,China
  • Received:2020-04-11 Online:2020-08-30 Published:2020-09-10

摘要:

根据下垂控制微电源在故障条件下必须满足的电流和电压约束,提出了基于虚拟阻抗限流、下垂限幅器稳压的故障控制策略,并建立了下垂控制微电源在正负序网络下的故障等效模型,进一步验证了故障等效模型的合理性。最后,通过MATLAB/Simulink仿真,验证了所提出故障等效模型的正确性以及故障控制策略的合理性。

关键词: 下垂控制, 微电网, 故障控制策略, 故障模型, 电流限幅

Abstract:

According to the current and voltage constraints of the droop control micro-sources under fault conditions,a fault control strategy based on the virtual impedance current limiting and droop limiter voltage regulation was proposed,the equivalent fault model of the droop control micro-sources under the positive and negative sequence network was established as well.The simulation results based on MATLAB/Simulink verify the correctness and rationality of the fault control strategy and fault model.

Key words: droop control, micro-grid, fault control strategy, fault model, current limit

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