Research on optimal operation of the regional integrated energy system with water-source heat pumps

doi:10.3969/j.issn.2097-0706.2022.01.006

Abstract

Abstract:

Regional integrated energy systems usually follow the "determining power by heating load" energy-supply principal in winter, resulting in the low load-regulation ability and low renewable energy consumption rate. Water source heat pump units are introduced into areas with abundant water sources to realize thermo-electric decoupling. Combining electric refrigeration devices, absorption refrigeration devices and multi-energy storage devices,a regional integrated energy system with water-source heat pumps is proposed. The overall architecture of this system is constructed by coupling the operation modes of different equipment. To achieve the goals of carbon peaking and carbon neutrality, a low-carbon optimized operation model is proposed on the premise of considering the operation costs and carbon emission costs. Through simulation, the effects of the optimal operation strategy on the operation costs of the integrated energy system at all aspects are studied, which verified the effectiveness of the proposed model and strategy.

Key words: carbon neutrality, regional integrated energy system, water-source heat pump, determining power by heating load, thermoelectric decoupling, electric refrigeration device, absorption refrigeration device, multi-energy storage device, carbon emission model

CLC Number:

TK01:TM732

XU Hengzhi, ZHOU Bowen, LI Guangdi, HUA Guanghui, KONG Xiangmiao. Research on optimal operation of the regional integrated energy system with water-source heat pumps[J]. Integrated Intelligent Energy, 2022, 44(1): 39-48.

Figures/Tables 16

Fig.1

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Table 4

Increasing-block prices of natural gas $\quad$ 元/m3

各时段购气量/m³	售气价格
0~100	3.10
$>$ 100~160	3.65
$>$ 160	4.50

Table 4

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储能装置	自然电/热损失系数	放电/热效率	充电/热效率
电储能	1/2 400	0.95	0.95
热储能	1/500	0.85	0.85

时段	售电价格
01:00—07:00	0.41
08:00—10:00,23:00—00:00	0.74
11:00—22:00	1.10

运行模式	经济成本	碳排放成本	总成本
1	16 773.91	2 143.56	18 917.46
2	8 234.50	1 078.10	9 312.60