Open AccessNovel control strategy of grid‐connected photovoltaic power supply for frequency regulation
Author(s) -
Yang Bingdeng,
Wang Xitian,
Xie Da,
Guo Yufeng
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8590
Subject(s) - maximum power point tracking , photovoltaic system , control theory (sociology) , automatic frequency control , grid connected photovoltaic power system , power (physics) , computer science , grid , engineering , voltage , electrical engineering , control (management) , mathematics , telecommunications , physics , geometry , artificial intelligence , quantum mechanics , inverter
The maximum power point tracking (MPPT) mode is widely applied in photovoltaic (PV) power generation system. In this article, instead of MPPT, a novel control strategy of grid‐connected PV power supply for frequency regulation is proposed. First, the static frequency characteristic curve of PV plant is proposed, and a method of synthesising the PV power output power–voltage characteristic curve and static frequency characteristic curve into frequency regulation curve of PV power supply is introduced. So the PV plant can participate in frequency regulation of the system. Through simulation analysis in power systems computer aided design (PSCAD)/electromagnetic transients including DC (EMTDC), PV plant realises the function of frequency regulation when load changes, so the variation of system frequency can be reduced and the frequency stability of power system can be improved, and the effectiveness of the strategy is verified.