{"title":"为微电网提供具有预定义时间收敛性的隐私保护分布式二次电压控制","authors":"Hao Li, Ting Yang, Hengyu Wang, Yanhong Chen","doi":"10.1016/j.apenergy.2024.124722","DOIUrl":null,"url":null,"abstract":"<div><div>Distributed secondary control is widely used in the hierarchical control structure of islanded microgrids. However, the information exchanged between distributed generators (DGs) may be intercepted by eavesdroppers, leading to the risk of privacy leakage and even data poisoning attacks that affect the stability of microgrids. Existing privacy-preserving distributed secondary control strategies suffer from low accuracy, high communication and computational overhead, and the poor convergence properties. Moreover, the objectives of multi-bus voltage regulation and proportional reactive power sharing cannot be achieved. To overcome these shortcomings, a privacy-preserving distributed average estimator is innovatively designed, where the states containing privacy information are decomposed into two parts based on the state decomposition method. The average estimation relies on the partial information exchange between neighboring DGs, thus avoiding the leakage of sensitive information. Furthermore, to address the difficulty that the state difference generated by the state decomposition leads to a long convergence time, a time-based generator is designed to effectively resolve the conflict between the privacy-preserving level and the convergence time. On this basis, a privacy-preserving distributed secondary voltage control is proposed, which preserves the privacy of the microgrid states while achieving average voltage regulation and proportional reactive power sharing within a predefined time, maintaining the system voltage stability and preventing the DGs from being heavily or lightly loaded. Finally, a hardware-in-the-loop platform for an islanded microgrid is built and the convergence and privacy-preserving performance of the proposed control strategy is verified.</div></div>","PeriodicalId":246,"journal":{"name":"Applied Energy","volume":"378 ","pages":"Article 124722"},"PeriodicalIF":10.1000,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Privacy-preserving distributed secondary voltage control with predefined-time convergence for microgrids\",\"authors\":\"Hao Li, Ting Yang, Hengyu Wang, Yanhong Chen\",\"doi\":\"10.1016/j.apenergy.2024.124722\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Distributed secondary control is widely used in the hierarchical control structure of islanded microgrids. However, the information exchanged between distributed generators (DGs) may be intercepted by eavesdroppers, leading to the risk of privacy leakage and even data poisoning attacks that affect the stability of microgrids. Existing privacy-preserving distributed secondary control strategies suffer from low accuracy, high communication and computational overhead, and the poor convergence properties. Moreover, the objectives of multi-bus voltage regulation and proportional reactive power sharing cannot be achieved. To overcome these shortcomings, a privacy-preserving distributed average estimator is innovatively designed, where the states containing privacy information are decomposed into two parts based on the state decomposition method. The average estimation relies on the partial information exchange between neighboring DGs, thus avoiding the leakage of sensitive information. Furthermore, to address the difficulty that the state difference generated by the state decomposition leads to a long convergence time, a time-based generator is designed to effectively resolve the conflict between the privacy-preserving level and the convergence time. On this basis, a privacy-preserving distributed secondary voltage control is proposed, which preserves the privacy of the microgrid states while achieving average voltage regulation and proportional reactive power sharing within a predefined time, maintaining the system voltage stability and preventing the DGs from being heavily or lightly loaded. Finally, a hardware-in-the-loop platform for an islanded microgrid is built and the convergence and privacy-preserving performance of the proposed control strategy is verified.</div></div>\",\"PeriodicalId\":246,\"journal\":{\"name\":\"Applied Energy\",\"volume\":\"378 \",\"pages\":\"Article 124722\"},\"PeriodicalIF\":10.1000,\"publicationDate\":\"2024-10-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Energy\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0306261924021056\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0306261924021056","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Privacy-preserving distributed secondary voltage control with predefined-time convergence for microgrids
Distributed secondary control is widely used in the hierarchical control structure of islanded microgrids. However, the information exchanged between distributed generators (DGs) may be intercepted by eavesdroppers, leading to the risk of privacy leakage and even data poisoning attacks that affect the stability of microgrids. Existing privacy-preserving distributed secondary control strategies suffer from low accuracy, high communication and computational overhead, and the poor convergence properties. Moreover, the objectives of multi-bus voltage regulation and proportional reactive power sharing cannot be achieved. To overcome these shortcomings, a privacy-preserving distributed average estimator is innovatively designed, where the states containing privacy information are decomposed into two parts based on the state decomposition method. The average estimation relies on the partial information exchange between neighboring DGs, thus avoiding the leakage of sensitive information. Furthermore, to address the difficulty that the state difference generated by the state decomposition leads to a long convergence time, a time-based generator is designed to effectively resolve the conflict between the privacy-preserving level and the convergence time. On this basis, a privacy-preserving distributed secondary voltage control is proposed, which preserves the privacy of the microgrid states while achieving average voltage regulation and proportional reactive power sharing within a predefined time, maintaining the system voltage stability and preventing the DGs from being heavily or lightly loaded. Finally, a hardware-in-the-loop platform for an islanded microgrid is built and the convergence and privacy-preserving performance of the proposed control strategy is verified.
期刊介绍:
Applied Energy serves as a platform for sharing innovations, research, development, and demonstrations in energy conversion, conservation, and sustainable energy systems. The journal covers topics such as optimal energy resource use, environmental pollutant mitigation, and energy process analysis. It welcomes original papers, review articles, technical notes, and letters to the editor. Authors are encouraged to submit manuscripts that bridge the gap between research, development, and implementation. The journal addresses a wide spectrum of topics, including fossil and renewable energy technologies, energy economics, and environmental impacts. Applied Energy also explores modeling and forecasting, conservation strategies, and the social and economic implications of energy policies, including climate change mitigation. It is complemented by the open-access journal Advances in Applied Energy.