Open AccessStrategy to smooth tie‐line power of microgrid by considering group control of heat pumps
Author(s) -
Shi Jinxiao,
Huang Wentao,
Tai Nengling,
Zhu Qin,
Liu Dawei
Publication year - 2017
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2017.0763
Subject(s) - microgrid , heat pump , power (physics) , electricity , tie line , line (geometry) , control theory (sociology) , computer science , control (management) , automotive engineering , electric power system , engineering , mechanical engineering , mathematics , thermodynamics , electrical engineering , physics , heat exchanger , geometry , artificial intelligence
In order to smooth the tie‐line power fluctuation effectively, this study presents a coordination control strategy for the combined heat and power microgrid based on heat pumps and energy storage system (ESS). The strategy establishes an electricity–heat conversion model of heat pumps. Heat pump priority sequence for state switching is calculated depending on the group control algorithm. By switching the heat pumps’ on–off states, partial tie‐line fluctuation power is suppressed firstly. Weight functions are built considering the operating states of ESS and heat pumps. The remaining tie‐line fluctuation power is allocated among them. Simulation indicates the proposed strategy implements the energy coordination control of the tie‐line fluctuation suppression. Meanwhile, it improves the complementary economy and energy utilisation efficiency for the combined heat and power microgrid.