进线备自投在单链单环式配电网结构中的应用

Application of Incoming Line Automatic Switching in Distribution Network with Single-chain and Single-ring Structure

研究进线备自投在单链单环式配电网结构中的应用,提出适应该型式配电网结构的应用方式。利用联络线保护装置的远传接点,对进线备自投装置输入输出二次回路进行改进设计,模拟进线故障对备自投动作行为进行分析,提出运行注意事项。结果表明该应用方式适用于单链单环式配电网结构,可提高电网供电可靠性,应推广单链单环式电网结构在配电网中的应用。

The application of incoming line automatic switching in distribution network with single-chain and single-ring structure is analyzed, and the corresponding application mode for these two structures of distribution network is proposed.Using the transfer contactor of the protection device of interconnecting line, a refined design is presented on the input and output of secondary circuit of incoming line automatic switching device, and the incoming line fault is simulated to analyze the action of automatic switching device, and suggestions are given with regard to operation. The result shows that the application mode is suitable for the distribution network using single-chain and single-ring structure, and it can improve the reliability of power system and expand the application of these two structures in the distribution network.