基于相变储能的建筑光伏系统储能优化配置研究

doi:10.3969/j.issn.1674-1951.2021.09.007

摘要/Abstract

摘要：

随着城市的扩张和建设,建筑能耗日益增长,由此引发的能源危机和环境污染问题迫在眉睫,而合理构建建筑微网,消纳可再生能源,可有效缓解电网压力,实现清洁、低碳发展。针对建筑光伏系统光伏消纳率低,负荷峰谷差大等问题,构建了考虑相变储能的建筑光伏系统,同时引入需求响应。由相变储能联合空调共同满足建筑内温控负荷需求,并给出系统调度策略,建立储能优化模型,以实现系统运行成本最小化为目标,采用粒子群算法对模型进行求解,实现了对系统储能容量进行优化配置,对系统进行经济技术分析。通过算例分析对5种配置方案进行对比,结果表明该优化系统不仅能有效降低成本,还能提高光伏消纳率并降低负荷峰谷差。

关键词: 相变储能, 建筑光伏系统, 需求响应, 光伏消纳率, 峰谷差, 建筑微网, 碳中和

Abstract:

With the expansion of cities,energy consumption of buildings is increasingly growing.The energy crisis and environmental pollution resulting from it are imminent. Therefore,constructing a micro-grid for buildings properly and consuming renewable energy thoroughly can effectively relieve the pressure of the power grid and realize its clean and low-carbon development.Aiming at the problems of low PV power consumption rate and large peak-valley load difference in building photovoltaic systems,a photovoltaic system with phase-change energy storage and its demand response mechanism are introduced. Under the premise of considering demand responses,a phase-change energy storage system is designed integrated with air conditioners, to jointly meet the temperature-controlled load of a building. The scheduling strategy is given,and an energy storage optimization model for the system is established.To minimize the system operation cost,taking particle swarm algorithm to solve the model,the optimized configuration of the energy storage system capacity can be obtained.Then,an economic and technical analysis is carried out on the system. Finally, five configuration schemes are compared based on case studies. The results show that the scheme proposed not only effectively reduces the cost,but also effectively improves the PV power consumption rate and reduces the peak-valley load difference.

Key words: phase-change energy storage, building photovoltaic system, demand response, PV power consumption rate, peak-valley load difference, microgrid for buildings, carbon neutrality

中图分类号:

TM73：TK01

王秋惠, 孙立国, 李佳雯. 基于相变储能的建筑光伏系统储能优化配置研究[J]. 华电技术, 2021, 43(9): 54-61.

WANG Qiuhui, SUN Liguo, LI Jiawen. Optimized configuration of energy storage devices of building photovoltaic system with phase-change energy storage[J]. Huadian Technology, 2021, 43(9): 54-61.

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负荷类别	时段	分时电价/ [元·(kW·h)^-1]
峰	(08:00,12:00]∪(18:00,23:00]	0.8
平	(07:00,08:00]∪(12:00,18:00]	0.6
谷	(23:00,24:00]∪(00:00,07:00]	0.3

方案	光伏消纳率/%	峰谷差/kW	日成本/ （元·d^-1）	满意度/%
无配置	0	513.269	5 474.72	23
仅PV	81.39	513.269	1 631.68	37
PV+DR	72.31	431.357	1 329.21	46
PV+PCM	97.45	512.587	1 659.52	53
PV+PCM+DR	88.83	349.485	762.29	60

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