Adjustable resource aggregation and scheduling in distribution transformer station areas based on time-of-use price and charge-discharge strategy of energy storage

doi:10.19799/j.cnki.2095-4239.2022.0754

Abstract

Abstract:

This paper proposes an adjustable resource aggregation method and a coordinated scheduling strategy in distribution transformer station area based on time-of-use price and charge-discharge strategy for distributed energy storage considering the user's electricity cost and energy comfort. The proposed methods can realize the coordinated scheduling of adjustable resources and the coordinated optimization of different types of energy units in the distribution transformer station areas. First, the framework of the platform energy use management and control system is constructed, following the architecture of the distribution Internet of Things and based on the "cloud-edge" collaborative technology. Then, the platform loads are classified according to the response uncertainty, and the Monte Carlo algorithm is used to aggregate the power of typical adjustable resources. The effectiveness of the aggregation model is then analyzed. Finally, the load aggregator is introduced to interact with the station area. The linear weighting method is used to calculate the electricity cost and energy consumption comfort level of users, and the charge-discharge strategy of distributed energy storage is combined to model the adjustable resource scheduling model of the distribution transformer station area. The differential evolution algorithm is then used to solve the model. The example analysis shows that the adjustable resource aggregation model and the coordinated scheduling strategy proposed in this paper can effectively reduce the energy consumption cost of users, improve the energy consumption comfort level, promote the enthusiasm of users to participate in grid response and improve the station area's ability to control the adjustable resources.

Key words: distribution internet of things, power consumption control in distribution transformer station area, adjustable resources aggregation, load aggregators, coordinated scheduling

CLC Number:

TM 73

Feng WANG, Zhiqiang LIU, Keyong ZHANG, Guanrui WANG, Hongde YIN, Zihao JIA, Haihui ZHAO, Yang MI. Adjustable resource aggregation and scheduling in distribution transformer station areas based on time-of-use price and charge-discharge strategy of energy storage[J]. Energy Storage Science and Technology, 2023, 12(4): 1204-1214.

Figures/Tables 13

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分类标准	负荷类型			负荷特性
负荷运行特性不同	可平移负荷	可转移负荷	可中断负荷	调控灵活且响应时间短
负荷时域特征不同	工作日负荷	节假日负荷		按照日类型交替呈现周期性变化
负荷响应不确定性	温控负荷	电动汽车	分布式储能	调控潜力受用户主观行为影响较大

室外温度/℃	聚合功率/MW
28	1.86
30	3.13
32	4.47
34	5.76
36	6.89

项目	购电成本/元	售电收益/元	用能舒适度指标
优化控制前	18274.1	1716.3	0.75
优化控制后	15193.6	2438.9	0.647

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