Coordinated Optimal Scheduling Method of AC/DC Flexible Distribution Network Considering Congestion Management

被引：0
|
作者：
Zhao Y. [1 ]
Guo L. [1 ]
Liu Y. [1 ]
Li X. [1 ]
机构：
[1] Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Nankai District, Tianjin
来源：
Dianwang Jishu/Power System Technology | 2021年 / 45卷 / 02期
基金：
中国国家自然科学基金;
关键词：
AC/DC distribution network; Congestion management; Coordinated optimization; Distribution locational marginal price; Flexible substation;
D O I：
10.13335/j.1000-3673.pst.2019.2646
中图分类号：
学科分类号：
摘要：
A coordinated optimal scheduling method of the flexible substations-based AC/DC distribution network is proposed, in which the congestion management strategy is addressed via a market-based interaction mechanism between the AC and DC networks. Considering the characteristics of the flexible AC/DC distribution network, the optimization decision model of the DC network based on the Distflow and second-order cone relaxation (SOCR) is established to minimize the operating cost of the DC distribution system, and the operational constraints of energy storage system (ESS) and demand response load are considered. When the congestion occurs, the AC distribution system operator (DSO) generates the congestion electricity price to adjust the scheduling of ESS and demand response load of the DC distribution system, so as to optimize the DC power flow and motivate the DC distribution system to change its transaction plan and, as a result, handle the congestion problem in AC distribution network. Numerous simulations that consider the bidirectional congestion of the lines are conducted in an improved IEEE-33 bus system, and the effectiveness of the proposed method is verified by analyzing the results before and after the proposed congestion management strategy. © 2021, Power System Technology Press. All right reserved.
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页码：622 / 631
页数：9
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