混合微网含储能系统互联接口变换器的双阈值窗控制策略

doi:10.11930/j.issn.1004-9649.202110096

中国电力 ›› 2022, Vol. 55 ›› Issue (10): 132-141.DOI: 10.11930/j.issn.1004-9649.202110096

混合微网含储能系统互联接口变换器的双阈值窗控制策略

岳怀瑜¹, 刘莎莎², 吴启亮³

1. 国网冀北电力有限公司超高压分公司，北京　102488;
2. 国网冀北电力有限公司唐山供电公司，河北唐山　063000;
3. 国网湖北电力有限公司经济技术研究院，湖北武汉　430000

收稿日期:2021-10-15 修回日期:2022-06-01 出版日期:2022-10-28 发布日期:2022-10-20
作者简介:岳怀瑜（1996—），男，通信作者，硕士，从事电能质量及无功补偿的研究，E-mail：469790215@qq.com
基金资助:
国家自然科学基金资助项目（电力变压器谐波特性模拟与谐波磁损耗有效算法研究，51677052）；河北省科技计划项目（配电网电能质量综合优化装置的关键技术研究，16211827）；河北省高等学校科学技术研究重点项目（含新能源发电的交直流混联系统柔性规划与运行优化控制策略的研究，ZD2020133）。

Dual-threshold Window Control Strategy of Interlinking Converter with Energy Storage System in Hybrid Microgrid

YUE huaiyu¹, LIU Shasha², WU Qiliang³

1. State Grid Jibei Electric Power Co., Ltd., EHV Power Transmission Company, Beijing 102488, China;
2. State Grid Jibei Electric Power Co., Ltd., Tangshan Power Supply Company, Tangshan 063000, China;
3. State Grid Hubei Electric Power Co., Ltd., Economic and Technical Research Institute, Wuhan 430000, China

Received:2021-10-15 Revised:2022-06-01 Online:2022-10-28 Published:2022-10-20
Supported by:
This work is supported by National Natural Science Foundation of China (Research on Simulation of Harmonic Characteristics of Power Transformer and Effective Algorithm of Harmonic Magnetic Loss, No.51677052), Science & Technology Plan Projects of Hebei Province (Research on Key Technology of Power Quality Comprehensive Optimization Device in Distribution Network, No.16211827), Science & Technology Research Project of Colleges and Universities in Hebei Province (Research on Flexible Planning and Operation Optimization Control Strategy of AC-DC Hybrid System with New Energy Power Generation, No.ZD2020133)

摘要/Abstract

摘要： 互联接口变换器作为混合微电网的关键装置，关系到微网运行的效率和可靠性。以互联接口变换器的归一化下垂控制及开启和关断条件为基础，融合基于荷电率的储能单元控制，组成开启阈值窗和关断阈值窗相结合的含储能系统的两级式互联接口变换器的双阈值窗控制策略，实现对互联接口变换器和储能系统的二次开启和关闭。仿真结果表明，变换器实现了双向功率控制，避免了互联接口变换器在整流和逆变间的反复切换，解决了单阈值控制策略切断较大功率流而导致的反复开断问题。储能系统内部各单元根据荷电率分配出力，进一步拓宽互联接口变换器的功率可调范围。

关键词: 混合微电网, 互联接口变换器, 双阈值窗, 功率控制

Abstract: As the key device of the hybrid microgrid, the interlinking converter is related to the efficiency and reliability of the microgrid operation. Based on the normalized droop control, a dual-threshold window control strategy for two-stage interlinking converter with an energy storage system is designed. Based on the switch-on and switch-off conditions of the interlinking converter, and integrates the control of the energy storage unit based on the SOC, a dual-threshold window control strategy combining the switch-on threshold window and the switch-off threshold window is formed to realize the control of the interlinking converter and can realize the secondary opening and closing of the energy storage system. The simulation results show that the converter not only realizes bidirectional power control but also avoids the repeated switching between rectification and inverter of the interlinking converter, and also solves the problem of repeated switching caused by the single-threshold control strategy cutting off large power flow. Each unit in the energy storage system distributes power according to the SOC, which further broadens the power adjustable range of the interlinking converter.

Key words: hybrid microgrid, interlinking converter, dual threshold window, power control

岳怀瑜, 刘莎莎, 吴启亮. 混合微网含储能系统互联接口变换器的双阈值窗控制策略[J]. 中国电力, 2022, 55(10): 132-141.

YUE huaiyu, LIU Shasha, WU Qiliang. Dual-threshold Window Control Strategy of Interlinking Converter with Energy Storage System in Hybrid Microgrid[J]. Electric Power, 2022, 55(10): 132-141.

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混合微网含储能系统互联接口变换器的双阈值窗控制策略

Dual-threshold Window Control Strategy of Interlinking Converter with Energy Storage System in Hybrid Microgrid

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混合微网含储能系统互联接口变换器的双阈值窗控制策略

Dual-threshold Window Control Strategy of Interlinking Converter with Energy Storage System in Hybrid Microgrid

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