基于功率方向的区域智能配电网保护方案及应用  

Area Intelligent Distribution Network Protection Scheme and its Application Based on Power Direction

作　　者：岳立[1] 马力[1] 胡晓波[2] 

机构地区：[1]广东电网公司广州供电局,广东广州510730 [2]华中科技大学电气与电子工程学院,湖北武汉430074

出　　处：《陕西电力》2014年第3期1-3,14,共4页Shanxi Electric Power

基　　金：国家重点基础研究发展计划资助项目(973项目)(2012CB125101)

摘　　要：结合某区域智能配电网的接线形式,提出了一种应用于该配电网的基于功率方向的保护方案。该方案根据系统假定功率方向和网络中各节点的有向连接关系构建网络功率矩阵,将配电网络节点分为环网节点和末端节点,通过环网馈线段或末端馈线段故障时馈线段2端节点的功率方向特性准确定位故障区段,给出故障隔离跳闸策略。介绍了该区域智能配电网保护系统的网络结构,并在该区域智能配电网保护系统上模拟了多重复杂故障算例,分析结果表明该保护系统不需要多级配合,能够最小范围地快速隔离故障,保证配电网供电可靠性.Combined with the connection form of certain area intelligent distribution network,a protection scheme based on its power direction is proposed.According to the assumed power direction and directional connection relationship,the nodes in the distribution network are divided into ring network nodes and nodes in the terminal of a feeder line.Fault isolation strategy is given from the power direction characteristics of the ring network or terminal feeder line section that is fault.The network structure of area intelligent distribution network protection system is introduced,when the complex fault happened,the protection system can isolate fault in minimum range quickly and protect reliable power supply without multistage coordination.

关 键 词：智能配电网 功率方向 网络节点 故障隔离策略 

分 类 号：TP308[自动化与计算机技术—计算机系统结构]