Urban Energy System Expansion Planning Considering Short-Term Operational Flexibility

doi:10.16183/j.cnki.jsjtu.2022.259

Abstract

Abstract:

Urban cities are the main force of energy consumption and carbon emission. In the context of “dual carbon”, promoting low-carbon transformation of urban energy systems has become the top priority of urban planning. However, while the share of renewable energy output increases, the requirement for system flexibility also increases. To this end, an urban energy system expansion planning model that accounts for both long-term and short-term uncertainties is proposed. Multiple forms of energy, including electricity, gas, and heat are encompassed in this model. At the planning level, uncertainty and operational flexibility during the real-time operation stage are estimated, and a stochastic optimization approach is employed for solving. The capacity expansion of renewable energy generators and energy hubs (EHs) is considered by the model, with the imposition of carbon emission quota constraints to ensure the attainment of carbon emission reduction targets. The results show that the model can effectively improve the economy of urban energy system and the rate of consumption of renewable energy, and can meet different carbon-emission reduction requirements.

Key words: urban energy system, carbon emission quota, short-term operational flexibility, expansion planning, energy hub (EH)

CLC Number:

TM732

WEI Zhinong, YANG Li, CHEN Sheng, MA Junchao, PENG Yan, FEI Youdie. Urban Energy System Expansion Planning Considering Short-Term Operational Flexibility[J]. Journal of Shanghai Jiao Tong University, 2024, 58(5): 659-668.

Figures/Tables 11

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时段	电价	气价
峰时(12:00—14:00, 19:00—22:00)	1.188	0.459
平时(8:00—11:00, 15:00—18:00)	0.871	0.459
谷时(1:00—7:00, 23:00—24:00)	0.475	0.459

类型	设备	费用/万元	碳排放量×10^-4/t
运行	电网	11 610	71.06
运行	气网	22 788	89.86
规划	光伏	3 656	—
规划	风力发电机	5 337	—
规划	CHP	23	—
规划	电锅炉	1 658	—
规划	气锅炉	1 025	—

参数	传统模型	本文模型	减少/%
切负荷量/(MW·h)	1.112	0	—
碳排放量×10^-3/t	149	132	11.4
弃风量/(GW·h)	39.585	40.072	-1.2
弃光量/(GW·h)	15.068	10.904	27.6
新能源弃用量/(GW·h)	54.653	50.977	6.7

场景	碳配额×10^-3/(t·a^-1)
1	无限制
2	10
3	9
4	8
5	7
6	6