一种通用远方备自投方法

A new method on general remote automatic bus transfer

目前许多电网的110 kV变电站采用了双回多级链式接线,现有的备自投装置无法解决该接线方式下的远方备自投功能。针对该问题,提出了一种通用远方备自投方法,采用光纤通信技术,在相互串接的变电站之间交互状态和动作信息。该方法将传统针对于母线的备自投方法扩展为针对于工作线路的的备自投方法。当电力系统故障或其他原因使工作电源被断开后,以工作线路为对象,跳开离故障点最近的开关,合上离电源点最近的开关,最大程度上恢复供电。该方法物理意义明晰,适用于多种复杂网络结构下的远方备自投功能,具有重大的实用意义。

At present, many 110 kV distribution stations adopt double loop series connection mode, which makes the present remote automatic bus transfer devices unapplicable. So the paper proposes a new general remote automatic bus transfer method based on the optical fiber communication. The distribution stations connected in series can exchange information with each other. The traditional bus based method is extended to the working line based method. If the working power is powered off for some reason, the nearest switch to the fault point will be switched off and the nearest switch to the power point will be switched on, so the system power supply will be recovered as far as possible. The method is simple, applicable and practical.