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Energies 2017, 10(12), 1966; https://doi.org/10.3390/en10121966

Optimal Capacity Configuration for Energy Hubs Considering Part-Load Characteristics of Generation Units

1
School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China
2
China Electric Power Research Institute, State Grid Corporation of China, Qinghe, Beijing 100192, China
*
Author to whom correspondence should be addressed.
Received: 29 September 2017 / Revised: 8 November 2017 / Accepted: 16 November 2017 / Published: 25 November 2017
(This article belongs to the Special Issue Decentralised Energy Supply Systems)
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Abstract

The simulation model is one of the key points affecting the optimal planning and operation of energy hubs (EHs). Since treating the efficiencies of generation units as constants would significantly simplify the calculation, only a simplified model is investigated in most research works. In this paper, aiming at optimizing the capacity configuration of an EH, we present a part-load characteristics-based (PLCB) model, in which the efficiencies of generation units will change with the fluctuating load. Based on the PLCB model, the accuracy of the EH model can be improved. Furthermore, a two-stage planning method is proposed to solve the optimal capacity configuration problem of the EH. Group Search Optimizer (GSO) is used to determine the optimal size in the first stage, and a mathematical programming method is applied to obtain the optimal operation of the EH in the second stage. Comparative studies using the PLCB model and the simplified model are performed to examine the impacts of equipment part-load characteristics on the sizing results. Simulation results indicate that the proposed model appears to have a better economic performance than the simplified model. View Full-Text
Keywords: energy hubs; simplified model; capacity configuration; part-load characteristics-based model; two-stage planning method energy hubs; simplified model; capacity configuration; part-load characteristics-based model; two-stage planning method
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Deng, S.; Wu, Q.; Jing, Z.; Wu, L.; Wei, F.; Zhou, X. Optimal Capacity Configuration for Energy Hubs Considering Part-Load Characteristics of Generation Units. Energies 2017, 10, 1966.

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