Open AccessWide‐area measurement system‐based online calculation method of PV systems de‐loaded margin for frequency regulation in isolated power systems
Author(s) -
Liao Siyang,
Xu Jian,
Sun Yuanzhang,
Bao Yi,
Tang Bowen
Publication year - 2018
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
eISSN - 1752-1424
pISSN - 1752-1416
DOI - 10.1049/iet-rpg.2017.0272
Subject(s) - margin (machine learning) , electric power system , control theory (sociology) , photovoltaic system , frequency regulation , power (physics) , automatic frequency control , phase margin , computer science , engineering , telecommunications , electrical engineering , control (management) , bandwidth (computing) , amplifier , physics , operational amplifier , quantum mechanics , machine learning , artificial intelligence
This study proposes a photovoltaic (PV) systems de‐loaded margin online calculation method that allows PVs to participate in isolated power system frequency regulation with a proper de‐loaded margin. The de‐loaded margin determines PVs' frequency regulation capacity. The larger de‐loaded margin of PVs provides more reserve capacity for frequency regulation, while more economic benefits are sacrificed correspondingly. Therefore, a tradeoff between PVs' economic benefit and their frequency regulation reserve capacity is necessary. Taking into account these two factors, a dynamic calculation method of PVs optimal de‐loaded margin based on the systems real‐time operation condition is proposed. Real‐time monitoring of the systems operation condition is realised by wide‐area measurement system. The calculated de‐loaded margin can meet the system frequency regulation requirement with PVs' minimum economic loss. RTDS simulation is conducted in an actual industrial isolated system driven by thermal power and PVs to verify the effectiveness of the proposed method.