Open AccessEnhancing the distribution grid resilience using cyber‐physical oriented islanding strategy
Author(s) -
An Yu,
Liu Dong,
Chen Bo,
Wang Jianhui
Publication year - 2020
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2019.0184
Subject(s) - islanding , grid , distributed generation , flexibility (engineering) , resilience (materials science) , computer science , reliability engineering , control (management) , frequency regulation , fault (geology) , control engineering , distributed computing , power (physics) , engineering , electric power system , electrical engineering , statistics , geometry , mathematics , physics , artificial intelligence , seismology , renewable energy , geology , thermodynamics , quantum mechanics
The increasing penetration of distributed generations enables an innovative operation paradigm that allows islanded operation to enhance the resilience of the distribution grid. In this study, a cyber‐physical oriented islanding strategy is proposed by coordinating centralised and distributed control to achieve seamless islanding transition and operational flexibility in emergency conditions. A cyber‐physical control structure is developed to mitigate various disturbances (e.g. emergencies or fluctuations) according to different operation conditions. Specifically, the distributed fault isolation and seamless islanding transition are coordinated to mitigate the outage caused by unplanned islanding, while a secondary control is proposed to support primary control by reducing the power fluctuations during islanded operation. With a rapid response speed, the local cyber‐physical devices are coordinated to accomplish islanding separation by selecting a feasible islanded area even under an unplanned islanding situation. A field test was conducted on a practical distribution network in China, and the results demonstrated the effectiveness and feasibility of the proposed islanding strategy.