Analysis of the performance and operation of a photovoltaic-battery heat pump system based on field measurement data

Solar Energy Advances Pub Date : 2024-01-01 DOI:10.1016/j.seja.2023.100047

Shubham Baraskar , Danny Günther , Jeannette Wapler , Manuel Lämmle

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Abstract

Photovoltaic-heat pump (PV-HP) combinations with battery and energy management systems are becoming increasingly popular due to their ability to increase the autarchy and utilization of self-generated PV electricity. This trend is driven by the ongoing electrification of the heating sector and the growing disparity between growing electricity costs and reducing feed-in tariffs in Germany. Smart control strategies can be employed to control and optimize the heat pump operation to achieve higher self-consumption of PV electricity. This work presents the evaluation results of a smart-grid ready controlled PV-HP-battery system in a single-family household in Germany, using 1-minute-high-resolution field measurement data. Within 12 months evaluation period, a self-consumption of 43 % was determined. The solar fraction of the HP amounts to 36 %, enabled also due to higher set temperatures for space heating and domestic hot water production. Accordingly, the SPF decreases by 4.0 % the space heating and by 5.7 % in the domestic hot water mode. The combined seasonal performance factor for the heat pump system increases from 4.2 to 6.7, when only considering the electricity taken from the grid and disregarding the locally generated electricity supplied from photovoltaic and battery units.

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基于实地测量数据的光伏电池热泵系统性能和运行分析

光伏热泵（PV-HP）与电池和能源管理系统的组合越来越受欢迎，因为它们能够提高自发自用光伏电力的利用率。这一趋势是由德国供热行业正在进行的电气化，以及不断增长的电费与不断降低的上网电价之间日益扩大的差距所推动的。智能控制策略可用于控制和优化热泵运行，以实现更高的光伏发电自耗电量。本研究利用 1 分钟高分辨率现场测量数据，对德国一户家庭中的智能电网可控光伏-热泵-电池系统进行了评估。在 12 个月的评估期内，确定自耗电量为 43%。由于空间加热和生活热水生产的设定温度较高，太阳能热水器的太阳能部分达到 36%。因此，SPF 在空间供暖模式下降低了 4.0%，在生活热水模式下降低了 5.7%。如果只考虑从电网获取的电力，而不考虑光伏发电和电池装置提供的本地发电，热泵系统的综合季节性能系数将从 4.2 提高到 6.7。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Solar Energy Advances

CiteScore

4.00

自引率

0.00%

发文量