自适应配电网拓扑与开关配置的智能分布式保护方法  

Intelligent-distributed distribution network protection strategy for self-adaptive topology and different switch configurations

作　　者：林志超 LIN Zhichao(Huizhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd.,Huizhou 516000,China)

机构地区：[1]广东电网有限责任公司惠州供电局,广东惠州516000

出　　处：《电力系统保护与控制》2021年第5期149-156,共8页Power System Protection and Control

基　　金：南方电网有限责任公司科技项目资助(031300KK52180108)。

摘　　要：分布式保护是配电网保护重要选择,然而当前的分布式保护由于缺乏配电网整体的运行信息以及配置信息,难以实现适应于拓扑变化与设备运行状态变化下的精准快速的保护策略调整。为此,提出一种适应于不同开关设备配置条件的智能分布式保护方法,借助差异化的动作时序整定,实现配电网保护智能决策。为实现自适应的时序整定,通过在线的拓扑分析掌握运行动态,并进一步地根据开关之间的配合需求定义开关的时序距离,通过对最大时序距离的计算获得满足时序配合条件的动作时序定值。算例表明所提方法能够正确应对各种故障场景,能够在配电网中进行推广应用。Distributed protection is an important choice for distribution network protection.However,because of the lack of overall operational information and configuration information of a distribution network,it is difficult to achieve accurate and rapid protection strategy adjustment for current distributed protection under the changes of topology and equipment operational status.Therefore,this paper proposes an intelligent distributed protection strategy which is suitable for different configuration conditions of switches.With the help of timing settings,intelligent decision-making of distribution network protection is realized.In order to realize the self-adaptive timing settings,we examine the dynamic operating status through online topology analysis,and further define the timing distance according to the operational order requirements between the switches,and obtain the timing setting value satisfying the requirements by calculating the maximum timing distance.The simulation results show that the proposed method can correctly deal with various fault scenarios,and show great prospect for application in a distribution network.

关 键 词：配电网 拓扑自适应 配置自适应 分布式保护 

分 类 号：TM77[电气工程—电力系统及自动化]