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Processes 2018, 6(10), 202; https://doi.org/10.3390/pr6100202

Seasonal Operation Strategy Optimization for Integrated Energy Systems with Considering System Cooling Loads Independently

1
Department of Power Consumption and Energy Efficiency, China Electric Power Research Institute, Beijing 100192, China
2
Department of Power Consumption, Zhejiang Electric Power Company, Hangzhou 310007, China
*
Author to whom correspondence should be addressed.
Received: 25 September 2018 / Revised: 18 October 2018 / Accepted: 18 October 2018 / Published: 20 October 2018
(This article belongs to the Section Computational Methods)
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Abstract

With the rapid growth of energy consumption, how to utilize energy in an efficient and cheap way becomes an intensive problem. This paper proposes an optimal operation strategy to reduce system fuel costs and increase system stability by independently considering cooling loads and adjusting CHP heat to power ratio seasonally. In this paper, a mathematical model of CHP operation is introduced to reveal the relationship between the supplementary volume of diesel oil and CHP heat to power ratio. Meanwhile, by analyzing the influence of seasonal factor on energy consumption, CHP heat to power ratio is optimized seasonally. Then, by independently considering the impacts of the cooling loads on system operation, the particle swarm optimization (PSO) algorithm is used to optimize the operation strategy of each device. Finally, this paper validates the positive effects of storage devices on improving system economy and stability under the premise of the time-of-use gas price. Results show that system fuel costs can be reduced by 5.2% if the seasonal factor is considered. Additionally, by optimizing the operation strategy, the peak valley gap of electrical loads in summer reduces by 40.7%. Moreover, the proposed strategy successfully utilizes storage capacity to shift loads and respond to gas price. View Full-Text
Keywords: Energy Hub model; cooling loads; CHP heat to power ratio; seasonal factor Energy Hub model; cooling loads; CHP heat to power ratio; seasonal factor
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Li, K.; Yan, H.; He, G.; Zhu, C.; Liu, K.; Liu, Y. Seasonal Operation Strategy Optimization for Integrated Energy Systems with Considering System Cooling Loads Independently. Processes 2018, 6, 202.

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