基于多速率采样数据的微电网二次频率控制

于永进; 张家浚; 刘 琪; 王福晶

引用本文:	于永进,张家浚,刘琪,等.基于多速率采样数据的微电网二次频率控制[J].电力系统保护与控制,2026,54(07):152-161.
	YU Yongjin,ZHANG Jiajun,LIU Qi,et al.Secondary frequency control of microgrids based on multi-rate sampling data[J].Power System Protection and Control,2026,54(07):152-161

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基于多速率采样数据的微电网二次频率控制
于永进¹，张家浚¹，刘琪¹，王福晶²
1.山东科技大学电气与自动化工程学院，山东青岛 266590；2.华能山东发电有限公司，山东济南 250014

摘要:

二次频率控制是保障孤岛微电网频率稳定的关键。针对子区域采样速率不同可能导致的控制效果不佳问题，基于多速率采样数据对相应的控制方案进行了研究。相较于现有方案，在构造系统数学模型时进一步考虑了多速率的采样场景。一方面，这将有利于提高控制方案的普适性和实际应用价值。另一方面，通过在通信资源充足的子区域缩短采样间隔，通信资源相对紧张的子区域的采样间隔可以更大，从而避免传输过程中的数据拥塞。在稳定性分析与反馈增益求解过程中，引入循环泛函法以放宽对李雅普诺夫泛函的正定性要求，改善了结果的保守性。最后，通过仿真算例验证了所提方案的有效性。

关键词: 微电网二次频率控制多速率采样数据循环泛函法

DOI：10.19783/j.cnki.pspc.251069

分类号:

基金项目:国家自然科学基金青年科学基金项目资助 (52307115)；山东省自然科学基金项目资助(ZR2022ME219)

Secondary frequency control of microgrids based on multi-rate sampling data

YU Yongjin¹, ZHANG Jiajun¹, LIU Qi¹, WANG Fujing²

1. College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao 266590, China; 2. Huaneng Shandong Power Generation Co., Ltd., Jinan 250014, China

Abstract:

Secondary frequency control is crucial for ensuring frequency stability in islanded microgrids. To address potential control inefficiencies arising from different sampling rates across microgrid subareas, this paper investigates corresponding control scheme based on multi-rate sampling data. Compared to existing schemes, the proposed method explicitly considers multi-rate sampling scenarios when constructing the system mathematical model. On the one hand, this enhances the generality and practical applicability of the control scheme. On the other hand, by shortening the sampling intervals in subareas with sufficient communication resources, larger sampling intervals can be adopted in subareas with relatively constrained communication resources, thereby avoiding data congestion during transmission. In stability analysis and feedback gain design, this paper introduces the looped-functional approach to relax the positive definiteness requirement of the Lyapunov functional, thereby reducing the conservatism of the results. Finally, simulation studies are conducted to verify the effectiveness of the proposed scheme.

Key words: microgrid secondary frequency control multi-rate sampling data looped-functional approach

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