Achieving energy resilience through smart storage of solar electricity at dwelling and community level
Achieving energy resilience through smart storage of solar electricity at dwelling and community level
复制标题
通过住宅和社区层面的太阳能智能存储实现能源弹性
DOI：
10.1016/j.enbuild.2019.04.012
复制
发表时间：
2019
影响因子：
6.7
通讯作者：
Alastair Howard
中科院分区：
文献类型：
--
作者：
Rajat Gupta;Adorkor Bruce;Alastair Howard
本文通过在82个住宅（家庭）集群中部署太阳能光伏（PV）系统和智能电池（互联网启用和可控），实证评估了牛津一个社会贫困社区实现的能源弹性程度。方法方法包括住宅和住户调查，以及对家庭用电量、太阳能光伏发电、电池充放电数据的高频监测。在受监测的家庭中，发现平均每日用电量与住宅面积、住户人数和使用的电器数量呈正相关。尽管74个住宅在一年内产生了117 兆瓦时的光伏电力，但峰值发电量与峰值消费量并不匹配，这表明需要电池存储。研究发现，根据光伏系统的规模、可用的剩余光伏电力和电池的大小，家用电池可以增加光伏电力的自我消耗，并通过释放储存的光伏电力来抵消电网需求，平均比例为6%。通过在74个住宅中使用智能电池，将社区层面的太阳能发电和储能聚合在一起，表明17:00至19:00之间的电网峰值电力需求减少了8%。未来，可以开发一种本地能源共享方案，其中并非所有住宅都需要安装太阳能光伏系统，而是使用可以虚拟监控的互联网电池。
This paper empirically evaluates the extent of energy resilience achieved in a socially-deprived community in Oxford, through deployment of solar photovoltaic (PV) systems and smart batteries (internet enabled and controllable) across a cluster of 82 dwellings (households). The methodological approach comprised dwelling and household surveys, along with high frequency monitoring of household electricity consumption, solar PV generation, battery charge and discharge data. In the monitored households, average daily electricity consumption was found to be positively related with dwelling size, number of occupants and number of appliances used. Although 117 MWh of PV electricity was generated within a year across 74 dwellings, peak generation did not match peak consumption, demonstrating the need for battery storage. Home batteries were found to increase self-consumption of PV electricity and offset grid demand through discharge of stored PV electricity marginally at an average of 6%, depending on the size of the PV system, surplus PV electricity available and size of the battery. Aggregating solar generation and storage at a community level showed that peak grid electricity demand between 17:00 and 19:00 was reduced by 8% through the use of smart batteries across 74 dwellings. In future, a local energy sharing scheme could be developed, wherein not all dwellings would need to have solar PV systems, but rather have internet enabled batteries that could be monitored and controlled virtually.