湖南电力 ›› 2022, Vol. 42 ›› Issue (4): 33-39.doi: 10.3969/j.issn.1008-0198.2022.04.007

• 研究与试验 • 上一篇    下一篇

含储能装置的电压暂降柔性治理策略研究

曾进辉1, 黄茜1, 王灿2, 兰征1, 梁博文1   

  1. 1.湖南工业大学电气与信息工程学院,湖南 株洲 412007;
    2.国网湖南省电力有限公司电力科学研究院,湖南 长沙 410007
  • 收稿日期:2022-06-30 出版日期:2022-08-25 发布日期:2022-10-14
  • 基金资助:
    国家自然科学基金项目(51807058);湖南省自然科学基金项目(2020JJ6082);湖南省研究生创新基金项目(QL20210247)

Study on Voltage Sag Flexible Management Strategy with Energy Storage Device

ZENG Jinhui1, HUANG Xi1, WANG Can2, LAN Zheng1, LIANG Bowen1   

  1. 1. College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China;
    2. State Grid Hunan Electric Power Company Limited Research Institute, Changsha 410007,China
  • Received:2022-06-30 Online:2022-08-25 Published:2022-10-14

摘要: 为减小电网电压暂降对敏感负荷安全运行的影响,提出一种含储能装置的电压暂降柔性治理策略,使储能装置在削峰填谷的同时兼顾电压暂降治理。首先,对电网电压dq分量求导,提取电网电压直流分量,实现对电网电压暂降幅度及相位的精确检测,达到提升系统动态响应速度的效果。其次,在电网电压暂降和恢复阶段,利用柔性切换策略实现暂降电压柔性补偿,以减小敏感负荷在电压暂降前后受到较大的电流冲击,保证输出电压的稳态精度。最后,在MATLAB/Simulink平台搭建系统仿真模型,验证所提柔性治理控制策略的正确性与有效性。

关键词: 敏感负荷, 储能装置, 电压暂降, 柔性切换

Abstract: In order to reduce the influence of power grid voltage sag on the safe operation of sensitive loads, this paper proposes a flexible voltage sag management strategy with energy storage device, which can take into account voltage sag management while peak clipping and valley filling. Firstly, the DC component of power grid voltage is extracted by differentiating the dq component of power grid voltage to realize the accurate detection of power grid voltage sag amplitude and phase, and achieve the effect of improving the dynamic response speed of the system. Secondly, in the power grid voltage sag and recovery stage, the flexible switching strategy is used to realize the flexible compensation of sag voltage, so as to reduce the current impact of sensitive loads before and after voltage sag and ensure the steady-state accuracy of output voltage. Finally, a simulation model is built on MATLAB/Simulink platform to verify the correctness and effectiveness of the proposed flexible governance control strategy.

Key words: sensitive load, energy storage device, voltage sag, flexible switch

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