检索结果-内蒙古大学图书馆

Coordinated Predictive secondary control for DC Microgrids Based on High-Order Fully Actuated System Approaches

IEEE TRANSACTIONS ON SMART GRID 2024年第1期15卷 19-33页

作者： Yu, Yi Liu, Guo-Ping Huang, Yi Guerrero, Josep M. Southern Univ Sci & Technol Ctr Control Sci & Technol Shenzhen 518055 Peoples R China Wuhan Univ Dept Artificial Intelligence & Automat Wuhan 430072 Peoples R China Aalborg Univ Villum Ctr Res Microgrids AAU Energy DK-9220 Aalborg Denmark

The problem of voltage recovery and current balancing has been a hot research topic in the field of DC microgrids. How to build a model that reflects the circuit and component-level control (e.g., inner control loops) characteristics and design a secondary controller based on it to accomplish the above output regulations is the concern of this paper. Accordingly, in this paper, based on the large-signal model of microgrids, the corresponding high-order fully actuated model is developed for DC microgrids, which is not only simple in form but also able to capture the details of the actual power system, such as the relationship between voltage and current. Further, a distributed predictive fully actuated secondary control strategy is proposed based on the developed model to achieve voltage recovery and accurate current sharing. Allowing one to design the secondary controller free from the constraints of physical coupling in the microgrid is one feature of this control strategy, while the other is the arbitrarily assignable closed-loop poles. An analytical model of the closed-loop DC microgrid system with predictive fully actuated secondary control is developed, and the analysis of stability and output current consensus is presented therewith. Extensive tests on a hardware system of a DC microgrid with solar panels and an MPPT controller are performed to validate the performance of the designed controller.

关键词： DC microgrid distributed secondary control predictive control high-order fully actuated system approaches voltage recovery and current sharing DC-DC converters

来源：评论

学校读者我要写书评

暂无评论

Enhancing secondary recovery in microgrid: Event-driven robust security control with semi-Markov switched dynamics

引用

APPLIED MATHEMATICS AND COMPUTATION 2024年 478卷

作者： Liu, Yu-An Zhang, Li Hefei Univ Technol Sch Math Hefei 230009 Peoples R China

The secondary control of islanded microgrids holds paramount importance for maintaining power quality in smart grid regions, posing a significant challenge in recent research on multi -agent systems. This paper presents an improved secondary control approach designed in AC islanded microgrids (MGs) operating in a communication network environment. The proposed method first considers that the communication topology of distributed generation (DG) is switched randomly, and such switching is described by the semi-Markov process with an uncertain transition rate. Then, an asynchronous mechanism is used to correlate the evolution of system and controller modes in response to solve the difficulty of obtaining modal information. Based on the aforementioned foundation, an event -based distributed security secondary control algorithm is constructed, leveraging feedback linearization and the leader -follower consensus protocol. Specifically, a hybrid event -triggered mechanism, characterized by both memorability and dynamics, is introduced, effectively mitigating communication load. Furthermore, by taking the false -data -injection attack as a case study, the algorithm enhances the security of communication control. Besides, considering the limitation of model error and the influence of external noise, a sliding mode control is additionally applied to enhance the control robustness among the secondary control layer. The proposed method is verified and evaluated from theoretical and emulational perspectives. The research findings demonstrate that the suggested secondary control has robust performance for the environment constraint while satisfying the targeted frequency recovery and real power allocation.

关键词： Islanded microgrid distributed secondary control Semi-Markov switched topology Communication environment Robust control

来源：评论

学校读者我要写书评

暂无评论

Research on distributed Coordination control Method for Microgrid System Based on Finite-time Event-triggered Consensus Algorithm

引用

Chinese Journal of Electrical Engineering 2024年第2期10卷 103-115页

作者： Lizhen Wu Heng Yang Jianping Wei Wendong Jiang College of Electrical and Information Engineering Lanzhou University of TechnologyLanzhou 730050China National Active Distribution Network Technology Research Center Beijing Jiaotong UniversityBeijing 100044China

Microgrids are networked control systems with multiple distributed generators(DGs).Microgrids are associated with many problems,such as communication delays,high sampling rates,and frequent controller updates,which make it challenging to realize coordination control among the ***,finite-time consensus algorithms and event-triggered control methods are combined to propose a distributed coordination control method for microgrid *** DG in the microgrid system serves as an agent node in the control network,and a distributed secondary controller is designed using finite-time consensus algorithm,such that the frequency and voltage restoration control has a faster convergence time and better anti-interference *** event-triggered function was designed based on the state information of the *** controller exchanges the state information at the trigger *** stability is analyzed using the Lyapunov stability theory,and it is verified that the controller cannot exhibit the Zeno phenomenon in the event-triggered process.A simulation platform was developed in Matlab/Simulink to verify that the proposed control method can effectively reduce the frequency of controller updates during communication delays and the burden on the communication network.

关键词： Microgrid event-triggered control distributed secondary control finite-time consensus algorithm coordination control

来源：评论

学校读者我要写书评

暂无评论

Event triggering fixed time secondary control of DC microgrid considering FDI attacks

引用

INTERNATIONAL JOURNAL OF ADAPTIVE control AND SIGNAL PROCESSING 2024年第10期38卷 3311-3328页

作者： Wu, Zhongqiang Geng, Shaochen Xie, Zongkui Yanshan Univ Hebei Key Lab Ind Comp Control Engn Qinhuangdao 066004 Hebei Peoples R China

Aiming at the problem that distributed secondary control is vulnerable to FDI attacks in DC microgrid, which affects the stability of the system, and the problems of communication redundancy and energy loss in traditional distributed secondary control, an event triggered fixed time distributed secondary control scheme based on high-order differentiator is proposed. The high-order differentiator is used to estimate the FDI attack signal of the system. Then, using the estimated attack signal, a fixed time distributed secondary controller based on event triggering is designed to eliminate the impact of the attack signal, and realize the adjustment of bus voltage and accurate power distribution. The strict stability and the absence of Zeno behavior are proved. The simulation results show that the proposed control strategy can significantly reduce the impact of attacks on the system, and the event triggered fixed time control reduces the energy consumption of the system and the update numbers of the controller, making the system have better dynamic performance.

关键词： DC microgrid distributed secondary control energy loss event triggering high order differentiator

来源：评论

学校读者我要写书评

暂无评论

A Unified Cyber Attack Detection and Mitigation Framework for an Islanded AC Microgrid

引用

IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS 2024年第9期54卷 5270-5282页

作者： De, Sourav Sodhi, Ranjana Indian Inst Technol Ropar Dept Elect Engn Rupnagar 140001 India

This article proposes a novel three-step framework to accurately detect, estimate and mitigate cyber-attacks like unauthorized data manipulation and hijacking controller attacks which can jeopardize the entire frequency and voltage stability of an autonomous microgrid (MG). Step-1 proposes a novel maximum mean discrepancy (MMD)-based index to detect and locate the attacked distributed energy resources (DERs);in Step-2, an unknown input observer (UIO) is proposed to coarsely estimate the unknown false data injection attack (FDIA) parameters;and Step-3 develops a backstepping integrated sliding-mode control (BSMC) to compensate the attack by injecting reverse control input bias. The efficacy of the proposed cyber-attack detection and mitigation framework is rigorously tested under various types of cyber attacks on the modified IEEE-13 bus distribution test feeder operated in an islanded mode, modeled in RSCAD and is validated with real-time digital simulator (RTDS). The performance and superiority of the proposed detection scheme are compared with an existing method through hardware-in-the-loop (HIL) simulation control environment.

关键词： Backstepping sliding-mode control (BSMC) data manipulation attack distributed secondary control maximum mean discrepancy (MMD) real-time digital simulator (RTDS) unknown input observer (UIO)

来源：评论

学校读者我要写书评

暂无评论

distributed Average Integral secondary control for Modular UPS Systems-Based Microgrids

引用

IEEE TRANSACTIONS ON POWER ELECTRONICS 2019年第7期34卷 6922-6936页

作者： Wei, Baoze Gui, Yonghao Marzabal, Albert Trujillo, Santi Guerrero, Josep M. Vasquez, Juan C. Aalborg Univ Dept Energy Technol DK-9100 Aalborg Denmark Salicru SA Santa Maria Palautordera 08460 Spain

This paper presents a distributed average integral secondary control (DAISC) method for modular uninterruptible power supply (UPS) systems-based microgrids. For each UPS unit, the local primary control level encompasses droop control and virtual impedance loops, which is commonly used in parallel inverter systems. In order to provide a fast voltage recovery performance, along with excellent power sharing capability among the parallel UPS modules, a distributed secondary control method based on controller area network (CAN) communication is proposed. In a sharp contrast to the existing distributed secondary control strategies, in which the output voltage and frequency of the modules are not shared through the CAN bus, in the proposed apporach, the inverter modules of the modular UPS share the integral output value of the secondary controller. By using the proposed novel DAISC approach, a better dynamic power sharing performance along with an inherent anti-windup capability of the integral controller is achieved. Simulation results using PLECS and experiments from a modular UPS platform have been developed to verify the feasibility and effectiveness of the proposed distributed secondary control. The results show that good performance of voltage recovery and power sharing of the proposed control method is obtained.

关键词： controller area network (CAN) bus distributed secondary control droop control modular uninterruptible power supply (UPS) parallel inverters power sharing virtual impedance

来源：评论

学校读者我要写书评

暂无评论

Frequency control strategy of microgrid distributed virtual synchronous generator based on asynchronous event triggered communication protocol

引用

INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS 2025年 168卷

作者： He, Ping Zhu, Yongliang Tao, Yukun Liu, Xinyan Shao, Jingjing Zhengzhou Univ Light Ind Coll Elect & Informat Engn Zhengzhou 450002 Peoples R China

Virtual Synchronous Generator (VSG) control technique is a potent solution to the issue of insufficient inertia in power systems. To address the challenges of low inertia and low output impedance in microgrids, this paper proposes a VSG frequency distributed collaborative secondary control strategy and develops a distributed active power sharing control strategy. Initially, considering the frequency parameter discrepancies among individual VSG, a tracking controller for the VSG frequency reference model is designed based on the heterogeneous multiagent theory. Subsequently, to alleviate the communication overhead, an integral-type event triggering mechanism is constructed. This mechanism obviates the need for a time synchronization system in VSGs, allowing each unit to rely solely on its internal clock for periodic triggering condition assessments. In contrast to the existing VSG secondary control strategies, this approach ensures the efficacy of the distributed secondary control strategy amidst asynchronous communication networks. Furthermore, the stability of the proposed secondary control strategy is demonstrated using the Lyapunov function in conjunction with the event triggering mechanism. Ultimately, an island microgrid system is simulated on the MATLAB/simulink platform, and the simulation results verify the feasibility and effectiveness of the proposed control strategy.

关键词： distributed secondary control Asynchronous event triggering control Virtual synchronous generator Heterogeneous multi-agent systems Isolated island microgrid

来源：评论

学校读者我要写书评

暂无评论

An enhanced second-order-consensus-based distributed secondary frequency controller of virtual synchronous generators for isolated AC microgrids

引用

ENERGY REPORTS 2021年 7卷 5228-5238页

作者： Wan, Xiaofeng Ding, Xiaohua Hu, Hailin Yu, Yunjun Nanchang Univ Sch Informat Engn Nanchang 330031 Jiangxi Peoples R China Jiangxi Univ Sci & Technol Sch Elect Engn & Automat Ganzhou 341000 Peoples R China

Virtual synchronous generator (VSG) control is a promising control method in microgrid (MG) for the inertia support characteristic. However, the VSG inherits the oscillation feature of synchronous generator (SG), thus the active power and frequency oscillation may be observed when VSG control is applied. In MG, the oscillation may cause the unreasonable dynamic active power sharing among VSGs. Subsequently, the VSGs are prone to overload and even unstable, and the existing works based on consensus control cannot suppress the oscillation effectively. In order to tackle this problem, this paper proposes an enhanced second-order-consensus-based distributed secondary frequency controller by introducing the active power second-order consensus control, and reveals the oscillation suppression capacity of the second-order consensus algorithm in depth. Since there is no specific control requirement for the second-order variables, i.e., the change rate of active power and frequency of MG in steady state, the proposed controller can be simplified by replacing the integral control of second-order variables with the proportional control of first-order variables, i.e., active power and frequency, thus the communication data volume will not increase comparing to the traditional first-order-consensus-based controller. This paper also provides a small-signal model of MG with the proposed controller to evaluate the system dynamic performance and design the parameters. Finally, the simulation results verify the effectiveness of the proposed controller. (C) 2021 The Authors. Published by Elsevier Ltd.

关键词： Consensus algorithm distributed secondary control Microgrid (MG) Multiagent system (MAS) Power oscillation Transient performance Virtual synchronous generator (VSG)

来源：评论

学校读者我要写书评

暂无评论

A unified distributed hierarchal control of a microgrid operating in islanded and grid connected modes

引用

IET RENEWABLE POWER GENERATION 2023年第10期17卷 2489-2511页

作者： Khan, Muhammad Yasir Ali Liu, Haoming Zhang, Ren Guo, Qi Cai, Haiqing Huang, Libin Hohai Univ Coll Energy & Elect Engn Nanjing Peoples R China China Southern Power Grid Elect Power Res Inst State Key Lab HVDC Guangzhou Peoples R China Natl Energy Power Grid Technol R&D Ctr Guangzhou Peoples R China Guangdong Prov Key Lab Intelligent Operat & Contro Guangzhou Peoples R China China Southern Power Grid Elect Power Res Inst CSG Key Lab Power Syst Simulat Guangzhou Peoples R China Hohai Univ Coll Energy & Elect Engn Nanjing 211100 Peoples R China

To guarantee an uninterruptable power supply, a microgrid must be able to operate in both islanded and grid-connected modes. Hence, it is required to synchronize the voltage phasor of the point of common coupling of the microgrid with the utility grid. Therefore, a distributed cooperative hierarchal control structure is proposed that seamlessly synchronized an islanded microgrid with the utility grid. A proposed method uses a leader-follower based consensus to regulate the voltage phasor while ensuring proportionate load sharing. A synchronization controller is designed that uses an adjustable parameter to eliminate the voltage magnitude and phase mismatch, and transmit the regulated compensation signal to the leader DGs. The leader DGs transmits these signals to the follower DGs through a cyber-channels. Moreover, a Massachusetts Institute of Technology rule and Lyapunov function based adaptive controllers are designed to update the secondary control law parameters in case of any disturbance or uncertainty. These adaptive techniques do not require prior knowledge about the microgrid topology, loads, and impedances thus enhancing the system performance. Furthermore, a small signal stability analysis is presented to facilitate the controller parameter design criteria. Finally, the robustness and effectiveness of proposed structure is verified through simulation results in different scenarios.

关键词： adaptive control distributed secondary control grid connected mode islanded mode microgrid seamless transition synchronization control

来源：评论

学校读者我要写书评

暂无评论

distributed Event-Triggered control of DC Microgrids With Input Saturation and Time Delay Constraints

引用

IEEE SYSTEMS JOURNAL 2023年第3期17卷 4786-4797页

作者： Najafirad, Mohammad Javad Dehkordi, Nima Mahdian Hamzeh, Mohsen Nazaripouya, Hamidreza Shahid Rajaee Teacher Training Univ Control Dept Elect Engn Fac Tehran 16788 Iran Univ Tehran Coll Engn Sch Elect & Comp Engn Tehran *** Iran Oklahoma State Univ Sch Elect & Comp Engn Stillwater OK 74078 USA

This article proposes a novel distributed event-triggered secondary control approach subject to input saturation and time delay in communication links among distributed generators (DGs) to achieve both voltage restoration and proportional current sharing in islanded DC microgrids (MGs). In contrast to periodic communication, sampled-data exchanges only occur when the triggering condition is satisfied. Therefore, communication instants and computation burdens will be reduced significantly. Compared with the existing event-triggered mechanism, this article investigates conditions for achieving consensus in the presence of both input saturation and time delay constraints. The Lyapunov synthesis is employed to derive the stability and convergence analysis of the proposed event-triggering condition and ensure the Zeno-free of the system. Finally, the effectiveness of the proposed controller is validated by simulating its performance under various scenarios in an islanded DC MG using the MATLAB/SimPowerSystems Toolbox.

关键词： Voltage control Voltage measurement Delay effects Microgrids Communication networks Frequency control Delays distributed secondary control event-triggered control input saturation microgrids (MGs) voltage regulation

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：