耦合弃风和循环水余热的供热系统
摘要:为探索经济、高效的利用弃风供热和热电厂循环水余热的深度利用，实现节能减排效益最大化，依据能量梯级利用原理，提出一种耦合弃风和循环水余热的供热系统。该系统以压缩式热泵为核心，将电网与热网两大能量输送通道有机结合起来，以热泵消耗的电能和回收的循环水余热替代城镇热网中的燃煤锅炉供热，同时压缩式热泵耗电也为风电上网腾出等量的电能输送空间。模拟分析结果表明：该供热系统可以实现热电厂循环水余热100%回收利用，提高热电厂供热能力30%，实现风电弃风远距离、大面积、集中供热；该系统每消纳1 MW·h弃风电量可节约标煤约0.7 t，是蓄热电锅炉弃风供热方案节能量的4倍左右，同时可节约水资源3.64 t；供热电费成本为常规方案的20%～30%，是一种较为理想的利用弃风供热方式。
Abstract：To explore effective and economic scheme of heat supply with wind curtailment and deep recovery of waste energy in cooling water to achieve the most effectiveness for energy conservation and emission reduction, this paper proposes a heat supply system coupling wind curtailment with waste energy recovered from cooling water according to the principle of energy cascade utilization. This system is cored on compressing heat pump and combines the grid together with the heating network, replaces the coal-fired boiler in urban heating network as heat source with the electricity consumed and waste energy recovered by the heat pump. Meanwhile, the electricity consumed by heat pump also gives ways for equal wind curtailment connecting into the grid. The simulation results show that this heating system can recover 100 percent of the waste energy in cooling water, improves the heating ability of thermal power plant about 30 percent and realizes the long distance, large area, central heating of wind curtailment. It is estimated that 3.64 tons of water and 0.7 tons standard coal, about 4 times of that of the storage-electric boiler, can be saved if 1 MW·h wind curtailment is consumed. Also, this is an ideal scheme for wind curtailment consumption whose electricity cost is only 20～30 percent of that of conventional scheme.
标题：耦合弃风和循环水余热的供热系统
title:Heat Supply System Coupling Wind Curtailment with Waste Energy in Cooling Water
作者：高智溥,万逵芳,刘岩,赵文波,邓爱祥
authors:GAO Zhipu,WAN Kuifang,LIU Yan,ZHAO Wenbo,DENG Aixiang
关键词：弃风电量,供热,热电联产,循环水余热,
keywords:wind curtailment,heat supply,heat-power cogeneration,waste energy in cooling water,
发表日期：2017-06-28
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