Modified setting of overcurrent protection for distribution feeders with distributed generation
Modified setting of overcurrent protection for distribution feeders with distributed generation
复制标题
分布式发电配电馈线过流保护整定修改
DOI：
10.1049/cp.2011.0168
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
A. Taalab
中科院分区：
文献类型：
--
作者：
Nader F. Sherbilla;T. Kawady;N. Elkalashy;A. Taalab
将分布式发电机（DG）连接到传统的配电系统导致保护设计的假设变得不正确。这些发电机通常与可再生能源一起使用，包括太阳能光伏（PV）和风电转换系统（WECS）。因此，可以预期配电网中过电流继电器的误协调或不正确操作。本文提出了一种实用的和通用的设置配置文件过电流保护元件在这样的网络，有相当数量的DG单位。对于这个目标，一个典型的11千伏地下配电馈线建模，而相当大的DG单元插入。不同的位置和大小被认为是所利用的DG。为了实现仿真目的，采用了Matlab/Simulink软件包，该软件包具有强大的仿真库和广泛的编程功能。不同的故障类型的情况下，构建和分析。结果证实了更好地理解DG问题的本质在配电系统中，并有助于实现更好的保护协调，降低故障清除时间以及优化的选择性过电流继电器与DG单元的存在。（6页）
Connecting Distributed Generators (DGs) into conventional distribution systems leads the protection design assumptions to become incorrect. These generators are commonly utilized with renewable energy resources including solar photovoltaic (PV) and wind electric conversion systems (WECS). As a result, miss-coordination or improper operation of overcurrent relays in distribution networks can be expected. This paper presents a practical and versatile setting profile for overcurrent protective elements in such networks that have considerable amounts of DG units. For this target, a typical 11 kV underground distribution feeder is modeled while a considerable DG unit is inserted. Different locations and sizes are considered for the utilized DG. For simulation purposes, Matlab/Simulink package is employed with its massive simulation library and broad programming facilities. Different fault type scenarios are constructed and analyzed. The results corroborate a better understanding of the essence of DG problems in distribution systems and assist to realize a better protection coordination, lower fault clearing times as well as optimized selectivity for overcurrent relays with the existence of DG units. (6 pages)