油田区域地热+多能互补能源系统技术应用分析

doi:10.3969/j.issn.2097-0706.2023.12.008

摘要/Abstract

摘要：

地热能作为一种可再生清洁能源，在实现绿色可持续供热方面具有广泛的应用前景。基于冀东油田采油区热电需求，构建地热+多能互补能源系统供能模式，并采用TRNSYS软件搭建了动态模型，对典型日和全年运行工况进行模拟分析。结果表明，非采暖季和采暖季典型日内光伏组件累计发电量分别为1 726.0和1 301.0 kW·h，电网累计下网电量分别为4 636.6和5 355.9 kW·h，全年光伏组件累计发电量和电网下电量分别为475.8和1 856.7 MW·h。系统增加水源热泵后，全年余热水热量利用率提高47.7%。地热水温度提高和源测流量增加可在一定程度上提升热泵性能系数，而单独增加荷侧流量后，性能系数不变，热泵出口水温降低。另外，通过采用光伏发电系统，全年可以减少二氧化碳排放达271.3 t，且从热电供应角度来看，系统清洁能源占比达92.3%，表明该系统具有优良的环保效益。

关键词: 油田区域, 地热水利用, 光伏发电, TRNSYS模型, 环保效益, 多能互补, 热泵, 可再生能源

Abstract:

As a kind of renewable and clean energy， geothermal energy can be widely applied in green and sustainable heating. Based on the thermal and electricity demands of Jidong Oilfield， a geothermal + multi-energy complementary energy system is designed for this area. The dynamic model of the system is constructed by TRSYS software to analyse its daily and annual operating conditions. The simulation results show that the typical daily cumulative power productions of the photovoltaic module in non-heating season and heating season are 1 726.0 kW·h and 1 301.0 kW·h， respectively， and its daily cumulative off-grid power are 4 636.6 kW·h and 5 355.9 kW·h， respectively. On annual scale， the cumulative power output of the photovoltaic module and the off-grid power are 475.8 MW·h and 1 856.7 MW·h. The installation of a water source heat pump rises the annual utilization rate of heat in waste water by 47.7%. The coefficient of performance （COP） can be improved by increasing geothermal water temperature and flow rate on source side， but cannot be improve by increasing flow rate on source side alone while lowering the heat pump outlet temperature. In terms of environmental protection， the photovoltaic module can reduce the CO₂ emissions from this system by 271.3 t per year. As 92.3% energy of the system is generated by clean energy， this system shows excellent environmental performance.

Key words: oilfield, geothermal water utilization, photovoltaic power generation, TRNSYS model, environmental benefits, multi-energy complementary, heat pump, renewable energy

中图分类号:

TK01

孙冠宇, 王永真, 颜艺灿, 王宇飞, 张平, 张兰兰. 油田区域地热+多能互补能源系统技术应用分析[J]. 综合智慧能源, 2023, 45(12): 63-70.

SUN Guanyu, WANG Yongzhen, YAN Yican, WANG Yufei, ZHANG Ping, ZHANG Lanlan. Application analysis on a geothermal + multi-energy complementary energy system for an oilfield area[J]. Integrated Intelligent Energy, 2023, 45(12): 63-70.

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负荷类型	流量/（m³·h^－1）	供水温度/℃	回水温度/℃	负荷/kW
掺水负荷	34.0	56	36	820
原油伴热负荷	307.3	40	36	1 410
采暖负荷	2.2	65	50	380
热水负荷	20.0	55		700

参数	数值
水源侧入口温度/℃	15
水源侧出口温度/℃	25
负荷侧入口温度/℃	20
热泵数量	100

参数	450 W组件数值	540 W组件数值
开路电压/V	44.0	49.2
短路电流/A	11.80	13.71
最大功率点电流/A	11.05	12.82
最大功率点电压/V	36.20	41.35
电流温度系数/(A·K^-1)	0.057	0.050
电压温度系数/(V·K^-1)	-0.286	-0.284
光电转换效率/%	17.8	17.8