配电自动化的模式及馈线开关的选择

ON SELECTION OF DISTRIBUTION AUTOMATION MODE AND FEEDER SWITCHES

对采用配电自动化开关设备相互配合的配电自动化模式 (ASDAS)和基于馈线终端设备 (FTU)的配电自动化模式(FTDAS)进行了比较 ,指出 ASDAS适用于农网和负荷密度小的地区 ;FTDAS适用于负荷密度大的城网和重要工业园区。在对“电压型”开关和“电流型”开关进行比较后 ,给出了在配电线路建设和改造中选用馈线开关的建议。并对采用“电流型”开关的配电自动化系统的设计提出了建议 ,讨论了配电自动化对柱上开关设备的要求 。

For the sake of giving a reference to the power supply enterprises to select appropriate mode of operation and feeder switches in the implementation of distribution automation, two modes of DAS, i.e., Automatic Switch based DAS (ASDAS) and Feeder Terminal Unit (FTU) based DAS (FTDAS) are compared. It is pointed out that ASDAS is suitable for distribution in countryside wherever the load density is not high, while FTDAS is suitable for distribution in cities and important industrial area with high load density. A comparison is also performed between load break switches and circuit breakers together with the suggestion on the switch selection. Requirements of pole mounted switches for FA are discussed. Design considerations of circuit breaker based DAS are discussed. A typical design showing the connection of a Feeder Terminal Unit (FTU) with a pole mounted switch is given.