Economic Dispatch of Grid-Connected Microgrid Considering Load Interruption

ZHAO Meng; DING Xiaoqun; LIU Yuanlong; WANG Ping

doi:10.3969/j.issn.1000-7229.2016.04.009

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Electric Power Construction ›› 2016, Vol. 37 ›› Issue (4) : 57-62. DOI: 10.3969/j.issn.1000-7229.2016.04.009

Economic Dispatch of Grid-Connected Microgrid Considering Load Interruption

ZHAO Meng1, DING Xiaoqun1, LIU Yuanlong2, WANG Ping3

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Abstract

To reduce the operation cost of grid-connected microgrid and give assistance to load shifting in power grid, this paper proposes an economic dispatch model of grid-connected microgrid with considering load interruption. The model regards microgrid as an intermediate link and establishes a new load interruption compensation mechanism. Floating compensation price is introduced to reflect user satisfaction, which is affected by interrupting power and time. We select a typical microgrid consisting of wind turbines, photovoltaic cells, micro turbines, fuel cells, storage battery and interruptible load as example, adopt Cuckoo-Search algorithm to solve the model, obtain the optimal interrupting combination, dispatch result and operation cost, as well as the limit interrupting energy. The results show that the model and algorithm are feasible and can create remarkable economic revenue for all participants.

Key words

microgrid / economic dispatch / compensation mechanism / floating compensation price / Cuckoo-Search algorithm

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ZHAO Meng, DING Xiaoqun, LIU Yuanlong, WANG Ping. Economic Dispatch of Grid-Connected Microgrid Considering Load Interruption[J]. Electric Power Construction. 2016, 37(4): 57-62 https://doi.org/10.3969/j.issn.1000-7229.2016.04.009

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