Economic Optimal Scheduling of Integrated Energy Systems Considering Multi-Energy Complementary Supply Characteristics

doi:10.16628/j.cnki.2095-8188.2021.09.007

Abstract

Abstract:

The integrated energy system (IES) achieves the purpose of improving the overall efficiency of the system through the complementary optimization of multiple energy sources.In this paper,considering the characteristics of multi energy complementary supply of IES,the structure of IES and the mathematical model of each energy equipment are determined.And then an economic optimal dispatch model is established with the objective of minimizing the sum of energy purchase cost,environmental pollution penalty cost and energy loss cost.In this model,the output of each energy conversion equipment is controlled to improve the operation performance of the system.Finally,an example is used to verify that the optimal control method can improve the operation economy and environmental protection of the IES,and promote the complementary supply of multiple energy sources and meet the demand of multiple loads.

Key words: integrated energy systems, multi-energy complementary supply characteristics, economical optimization dispatching, economy

CLC Number:

TM73

ZHAO Fengzhan, LI Qi, ZHANG Qicheng, WAN Zhongyang, SU Juan, WU Ming. Economic Optimal Scheduling of Integrated Energy Systems Considering Multi-Energy Complementary Supply Characteristics[J]. LOW VOLTAGE APPARATUS, 2021, 0(9): 45-50.

Figures/Tables 8

References 29

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能源设备	设计容量	能源设备	设计容量
风电机组/kW	110	电制冷机/kW	40
光电机组/kW	65	P2G设备/kW	100
燃气轮机/kW	150	蓄电池/kWh	70
余热锅炉/kW	80	储热罐/kWh	100
电热锅炉/kW	100	储气罐/m³	60
吸收式制冷机/kW	40

对比项目	优化前	优化后	变化率/%
目标函数/元	9.87×10⁷	7.94×10⁷	-19.55
外购电功率/kW	1.30×10⁶	2.28×10⁶	75.38
外购天然气量/m³	4.44×10⁵	3.62×10⁵	-18.47
能源外购成本/元	1.76×10⁶	2.04×10⁶	15.91
大气污染物排放量/kg	3.66×10⁶	2.98×10⁶	-18.58
环境污染惩罚成本/元	4.39×10⁷	3.57×10⁷	-18.68
能量损耗成本/元	2.49×10⁵	1.99×10⁵	-20.08