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弱慣性交流微電網群的分布式多目標協同控制方法

來源：電工電氣發布時間：2023-07-01 10:01 瀏覽次數：556

弱慣性交流微電網群的分布式多目標協同控制方法

何志毅¹，匡洪海¹，于錫琪²，常宇瑞¹，王凱¹

(1 湖南工業大學電氣與信息工程學院，湖南株洲 412007；

2 國網湖南省電力有限公司株洲供電分公司，湖南株洲 412000)

摘要：微電網群 (MGC) 集合了多個子網的電力資源，大量分布式電源 (DG) 的接入給系統的經濟調度和功率均分帶來巨大挑戰，也削弱了系統的慣性?；诜植际娇刂?，提出了一種微電網群的多目標協同控制，設計了三層協同控制架構。在設備層，利用虛擬同步發電機 (VSG) 模擬慣性；在子網層，利用功率一致性控制，增加了系統的阻尼，實現功率均分和振蕩抑制；在網群層，基于等微增率準則，實現網群的經濟優化和頻率恢復。通過仿真實驗，設計了沖擊負荷接入切除、通信延時以及功率限制等算例，證實了所提控制算法的有效性。

關鍵詞： 微電網群；虛擬同步發電機；分布式控制；頻率恢復；功率分配

中圖分類號：TM711 文獻標識碼：A 文章編號：1007-3175(2023)06-0007-07

Distributed Multi-Objective Cooperative Control Method for

Weak-Inertia AC Microgrid Clusters

HE Zhi-yi¹, KUANG Hong-hai¹, YU Xi-qi², CHANG Yu-rui¹, WANG Kai¹

（1 College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China;

2 Zhuzhou Power Supply Branch of State Grid Hunan Electric Power Co.,Ltd, Zhuzhou 412000, China）

Abstract: Microgrid Clusters (MGC) gather the power generation resources of multiple subnets, and the interconnection of a great number of Distributed Generators (DG) will bring large challenges to the economic dispatch and power sharing of the system and also weaken the system inertia. The paper, based on distributed control, proposes a multi-objective cooperative control for MGC and a three-layer cooperative control framework. On the equipment layer, the Virtual Synchronous Generator (VSG) is used to simulate inertia; on the subnet layer, power consistency control is adopted to increase the system damping, which realizes power sharing and oscillation suppression; on the MGC layer,economic optimization and frequency recovery of MGC are realized based on the equal incremental principle. Finally, numerical examples such as impact load access removal, communication delay and power limitation are designed through simulation experiments to verify the effectiveness of the proposed control algorithm.

Key words: microgrid clusters; virtual synchronous generator; distributed control; frequency recovery; power distribution

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弱慣性交流微電網群的分布式多目標協同控制方法