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多直流馈入受端电力系统分区及互联优化方法
作者:
作者单位:

1.广东电网有限责任公司电网规划研究中心;2.广东电网有限责任公司

作者简介:

通讯作者:

基金项目:

中国南方电网有限责任公司规划项目(030000QQ00170010)


Optimization Method for Partition and Interconnection of Multi-infeed DC Receiving-end Power System
Author:
Affiliation:

1.Grid Planning Research Center,Guangdong Power Grid Corporation,CSG;2.Grid Planning Research Center,Guangdong Power Grid Corporation,CSG;3.Guangdong Power Grid Corporation, CSG, Guangzhou 510080, China

Fund Project:

Science and Technology Project of China Southern Power Grid Company Limited (No. 030000QQ00170010)

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    摘要:

    合理分区是广东等多直流馈入受端电力系统应对短路电流超标、复杂故障和交直流交互影响导致大停电等问题的根本措施。已有研究集中在开断交流支路选择方面,而分区在开断交流支路往往需配套加强区内网架以满足电气支撑约束。为此,提出了一种分区及互联优化方法,能够对分区断面、区间及区内互联方案进行同步协调优化,在满足潮流传输、直流运行支撑等需求下确定合理的拓扑结构和电气强度。首先,以最小化指定规模及以上停电事故发生概率为目标函数,考虑系统安全约束,构建了分区及互联问题对应的优化模型;然后,基于最小单元定义实现了网架方案的数学化表达,并以最小单元间的联结关系作为优化变量;最后,采用和声搜索和蒙特卡罗算法求解所发展的模型。通过在广东实际电力系统的应用验证了文中所提方法的可行性和有效性

    Abstract:

    Proper system partition is the fundamental measure to deal with the blackouts caused by short circuit exceeding limits, complex failures and AC-DC interaction in multiple DC infeed receiving power system like Guangdong. The existing research focuses on the selection of AC line outage, but system partition often needs to strengthen the grid in the area to meet the electrical support constraints. For this purpose, an optimization method of partition and interconnection is proposed which is able to carry out coordinated optimization for the interconnection schemes within and among sections. With this model, reasonable topology and electrical strength are determined to meet the needs of power flow transmission and DC operation support. Firstly, the objective function is defined as minimizing the probability of blackouts at specified scales, and a mathematic model of network structure optimization is put forward considering system security constraints. Secondly, mathematical expression of network structure is developed based on the definition of the minimum unit of the system, with the interconnection schemes among the minimum units as optimization variables. Finally, harmony search algorithm is used to solve the mathematical model. The effectiveness of the proposed method is verified in the application in Guangdong power system

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引用本文

杨燕,程鑫,金楚,等.多直流馈入受端电力系统分区及互联优化方法[J/OL].电力系统自动化,http://doi.org/10.7500/AEPS20190718010.
YANG Yan,CHENG Xin,JIN Chu,et al.Optimization Method for Partition and Interconnection of Multi-infeed DC Receiving-end Power System[J/OL].Automation of Electric Power Systems,http://doi.org/10.7500/AEPS20190718010.

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历史
  • 收稿日期:2019-07-18
  • 最后修改日期:2020-05-14
  • 录用日期:2020-02-03
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