Impact of micro-combined heat-and-power systems on energy flows in the UK electricity supply industry
Impact of micro-combined heat-and-power systems on energy flows in the UK electricity supply industry
复制标题
微型热电联产系统对英国供电行业能量流的影响
DOI：
10.1016/j.energy.2005.10.012
复制
发表时间：
2006
期刊：
影响因子：
9
通讯作者：
M. Newborough
中科院分区：
文献类型：
--
作者：
A. Peacock;M. Newborough
将微型热电联产系统应用于单个住宅和一组内的各种住宅的效果，通过使用全年记录在1分钟时间基础上的天然气和电力消耗数据进行调查。基于斯特林发动机和燃料电池的微型热电联产系统预计将提供单个住宅年电力需求的25-46%。在一年中的所有日子里，放置在电网上的最终负荷的日负荷系数降低了，这表明微型热电联产系统的总体效果将是提供高度分散的基本负荷发电。考虑到电力效率为15%的1kW斯特林发动机微型热电联产系统的各种渗透水平，表明单个配电变压器的总峰值负荷在冬季的最大降幅约为44%，而在夏季仅为3%。在低渗透水平下，3kW燃料电池系统的另一种替代方案是50%的电力效率，这将显著降低（峰值负荷和日常网络电力需求），一旦冬季渗透水平超过约15%，配电变压器就会出现明显的逆流。
The effects of applying micro-CHP systems to a single dwelling, and to various dwellings within a group, are investigated by using gas and electricity consumption data recorded on a 1-min time base across a full year. Micro-CHP systems based on Stirling engines and fuel cells are predicted to supply 25–46% of the single dwelling's annual electricity demand. For all days of the year, the daily load factor of the resultant load placed on the electricity network is reduced, suggesting that the overall effect of micro-CHP systems will be to provide highly dispersed base-load generation. Consideration of various penetration levels of a 1kW Stirling engine micro-CHP system of 15% electrical efficiency indicates that the maximum reduction in the aggregate peak load for a single distribution transformer will be about 44% on a winter's day, but only 3% on a summer's day. An alternative implementation of 3kW fuel cell systems of 50% electrical efficiency would yield significant reductions (both in the peak load and the daily requirement for network electricity) at low penetration levels, with significant reverse flows occurring at the distribution transformer once the penetration level exceeds approximately 15% on a winter's day.