Resilient control based frequency regulation scheme of isolated microgrids considering cyber attack and parameter uncertainties

2022 ◽  
Vol 306 ◽  
pp. 118054
Author(s):  
Dillip Kumar Mishra ◽  
Prakash Kumar Ray ◽  
Li Li ◽  
Jiangfeng Zhang ◽  
M.J. Hossain ◽  
...  
Keyword(s):  
Frequency Regulation ◽  
Cyber Attack ◽  
Parameter Uncertainties ◽  
Resilient Control ◽  
Regulation Scheme

Load frequency control in the presence of simultaneous cyber-attack and participation of demand response program

2022 ◽  
pp. 014233122110686
Author(s):  
Seyed Hossein Rouhani ◽  
Hamed Mojallali ◽  
Alfred Baghramian
Keyword(s):  
Power System ◽  
Demand Response ◽  
Sliding Mode ◽  
Load Frequency Control ◽  
Frequency Regulation ◽  
Cyber Attack ◽  
Smart Power ◽  
False Data Injection ◽  
Load Disturbance ◽  
Communication Time

Simultaneous investigation of demand response programs and false data injection cyber-attack are critical issues for the smart power system frequency regulation. To this purpose, in this paper, the output of the studied system is simultaneously divided into two subsystems: one part including false data injection cyder-attack and another part without cyder-attack. Then, false data injection cyber-attack and load disturbance are estimated by a non-linear sliding mode observer, simultaneously and separately. After that, demand response is incorporated in the uncertain power system to compensate the whole or a part of the load disturbance based on the available electrical power in the aggregators considering communication time delay. Finally, active disturbance rejection control is modified and introduced to remove the false data injection cyber-attack and control the uncompensated load disturbance. The salp swarm algorithm is used to design the parameters. The results of several simulation scenarios indicate the efficient performance of the proposed method.

scholarly journals Frequency Regulation and Coordinated Control for Complex Wind Power Systems

Complexity ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Cheng Guo ◽  
Delin Wang
Keyword(s):  
Power Systems ◽  
Wind Power ◽  
Frequency Control ◽  
Synchronous Generator ◽  
Coordinated Control ◽  
Power Grids ◽  
Frequency Regulation ◽  
Frequency Variation ◽  
Operation Conditions ◽  
Regulation Scheme

With the development of complex renewable energy systems, the frequency control and regulation of the power grid powered by such renewable energies (e.g., wind turbine) are more critical, since the adopted different power generators can lead to frequency variations. To address the frequency regulation of such power grids, we will present a variable coefficient coordinated primary frequency regulation scheme for synchronous generator (SG) and doubly fed induction generator (DFIG). The variable adjustment coefficient of DFIG is defined according to the current reserve capacity, which can be applied to adjust different operation conditions to regulate the frequency variation within a predefined allowable range. Since the DFIG can make full use of the reserve wind power in the system frequency regulation, the proposed method can address both the frequency regulation response and the economic performance. Simulation results indicate that the proposed coordinated control scheme can achieve satisfactory frequency regulation response and lead to reduced demand for frequency regulation of SG.

scholarly journals Intrusion Detection on Apache Spark Platform in Big data and Machine Learning Techniques

2021 ◽  
Vol 23 (06) ◽  
pp. 1257-1266
Author(s):  
Mrs.J. Yamuna Bee ◽  
◽  
E. Naveena ◽  
Reshma Elizabeth Thomas ◽  
Arathi Chandran ◽  
...  
Keyword(s):  
Power Systems ◽  
Cyber Attacks ◽  
Machine Learning Techniques ◽  
Frequency Regulation ◽  
Cyber Attack ◽  
Learning Techniques ◽  
Control Scheme ◽  
Risk Review ◽  
The Impact

With the rising cyber-physical power systems and emerging danger of cyber-attacks, the traditional power services are faced with higher risks of being compromised, as vulnerabilities in cyber communications can be broken to cause material damage. Therefore, adjustment needs to be made in the present control scheme plan methods to moderate the impact of possible attacks on service quality. This paper, focuses on the service of synchronized source-load contribution in main frequency regulation, a weakness study is performed with model the attack intrusion process, and the risk review of the service is made by further model the attack impacts on the service’s bodily things. On that basis, the customary synchronized reserve allotment optimization model is adapted and the allocation scheme is correct according to the cyber-attack impact. The proposed alteration methods are validating through a case study, showing efficiency in defensive alongside the cyber-attack impacts.

scholarly journals Black Start Restoration of Islanded Droop-Controlled Microgrids

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5996
Author(s):  
Ogbonnaya Bassey ◽  
Karen L. Butler-Purry
Keyword(s):  
Mixed Integer ◽  
Extreme Weather Events ◽  
Frequency Regulation ◽  
Cyber Attack ◽  
Electricity Grid ◽  
Power Scheduling ◽  
Weather Events ◽  
Power Restoration ◽  
Restoration Method ◽  
Operational Constraints

The electricity grid faces the possibility of outages due to extreme weather events, cyber-attack, and unexpected events. When these unwanted events occur, it is desired that electricity be restored as soon as possible to meet the power demands of critical loads. The microgrid approach to power restoration holds a lot of promise, since microgrids can operate in island mode. This paper presents a novel sequential restoration methodology for microgrid black start. The microgrid architecture considered is assumed to be operating in multi-master mode. The master distributed generators (DGs) are coordinated to operate together through droop control. Several operational constraints are formulated and linearized to realize a mixed-integer linear programming (MILP) problem. The method is studied on an islanded microgrid based on a modified IEEE 13 node test feeder. Detailed transient simulation in PSCAD was used to verify the accuracy of the restoration methodology. The developed restoration method can maximize the energy restored while ensuring good voltage and frequency regulation, and ensure that power scheduling mismatch is shared in the desired proportion.

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