Noise‐resilient voltage and frequency synchronisation of an autonomous microgrid. Issue 2 (18th December 2018)

• Record Type: Journal Article
• Authors: Shrivastava, Sonam; Subudhi, Bidyadhar; Das, Susmita
• Is Part Of: IET generation, transmission & distribution. Volume 13:Issue 2(2019)
• Page Start: 189
• Page End: 200
• Publication Date: 2018-12-18
• Subjects: distributed power generation -- robust control -- distributed control -- power system control -- control system synthesis -- closed loop systems -- power distribution control -- power generation control -- synchronisation -- voltage control; frequency synchronisation -- autonomous microgrid -- noise‐resilient secondary control scheme -- communication network -- distributed secondary control structure -- distributed generator units -- uncertain noises -- synchronisation performance -- MG control -- generalised Gaussian noise -- MG system -- controller design -- robust distributed control scheme -- auxiliary corrective control input -- MG test system -- communication topology -- communication link delays -- noise parameter -- neighbourhood tracking error‐based control scheme -- robust noise‐resilient control scheme -- voltage synchronisation -- active power‐sharing; Electric power production -- Periodicals; Electric power transmission -- Periodicals; Electric power distribution -- Periodicals; 621.3105
• DOI: 10.1049/iet-gtd.2018.6409
• Languages: English
• ISSNs: 1751-8687

Abstract

Abstract : We present a new noise‐resilient secondary control scheme for voltage and frequency synchronisation of an autonomous microgrid (MG). The communication network is an integral part of distributed secondary control structure. The communication links among the distributed generator units are assumed to be ideal in nature. However, the communication links are subjected to uncertain noises, which can significantly affect the synchronisation performance of MG control. We consider the information received over the communication link is corrupted with generalised Gaussian noise. Further, the complete non‐linear model of the MG system has been considered for designing a robust distributed control scheme augmented with an auxiliary corrective control input to counterbalance the impact of noises. The performance of the proposed control scheme is evaluated by pursuing simulation of a MG test system in MATLAB/SimPoweSystem environment under load perturbation, changes in communication topology, communication link delays, data dropout, and variations in noise parameter. The results of a comparative assessment of the proposed control scheme with two approaches first a neighbourhood tracking error‐based control scheme and second a noise‐resilient control scheme are presented to illustrate the effectiveness of the proposed robust noise‐resilient control scheme in voltage and frequency synchronisation and accurate active power‐sharing.