Optimal allocation of flexible resources in distribution network considering cost of flexible auxiliary services

被引：0
|
作者：
Niu H. [1 ]
Qian L. [1 ]
Yang L. [1 ,2 ]
Wang K. [3 ]
机构：
[1] College of Information and Electrical Engineering, China Agricultural University, Beijing
[2] School of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan
[3] State Grid Zhejiang Electric Power Economy Research Institute, Hangzhou
来源：
| 1600年 / Electric Power Automation Equipment Press卷 / 41期
关键词：
Auxiliary service fees; Distribution network; Flexibility assessment; Flexible resources; Optimal allocation;
D O I：
10.16081/j.epae.202110039
中图分类号：
学科分类号：
摘要：
Aiming at the problem of insufficient flexible adjustment capacity of distribution network caused by large power fluctuation of high-permeability renewable energy in a short time, in order to reduce the dependence of the distribution network on the flexible supply provide by the upper-level power grid, a flexible resource optimal allocation method is proposed, which takes into account the flexibility auxiliary service fees of the upper-level power grid. The evaluation index of gate power fluctuation degree is defined, which represents the flexibility level of distribution network. Based on the Copula theory, the evaluation method of distribution network flexibility is formulated, and the installation location selection method of fle-xible resources is proposed based on the ranking index of influence of node power on gate power fluctuation. For the future power market scenarios, based on the balance game between the distribution network's flexible demand for the upper-level power grid and the flexible supply capacity of the upper-level power grid, and combined with the flexible supply constraints of various types of flexible resource equipment, a flexible resource optimal allocation model including the flexibility auxiliary service fees of the upper-level power grid is constructed. Distribution network example simulative results show that the proposed flexible resource allocation method can effectively reduce the total annual operating cost of distribution network, improve the consumption of renewable energy and the power supply reliability of the distribution network system, weaken the degree of gate power fluctuation, so as to reduce the impact of renewable energy and random load fluctuation on the upper-level power grid. © 2021, Electric Power Automation Equipment Press. All right reserved.
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页码：52 / 59
页数：7
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