Method and system for adjusting open loop point by remote automatic bus transfer devices

Abstract

The invention provides a method and a system for adjusting an open loop point by remote automatic bus transfer devices. The method comprises the steps of detecting the real-time power of a main supply path by the remote automatic bus transfer device of a substation of a first transformer substation; judging whether the main supply path is overloaded or not according to the relationship between the real-time power and the limited power of the main supply path; if the main supply path is overloaded, sending the overload information and the overload power of the main supply path into the substation of the transformer substation at an open loop point by the remote automatic bus transfer device of the substation of the first transformer substation; comparing the overload power, the home station power and the limit load power of a spare supply path by the remote automatic bus transfer device of the substation of the transformer substation at the open loop point; if the overload power is smaller than the home station power and the home station power is smaller than the limit load power of the spare supply path, controlling the remote automatic bus transfer device of the substation of the transformer substation at the open loop point to close a switch of the spare supply path at the open loop point; after the set time of closing the switch of the spare supply path at the open loop point is delayed, opening a switch of the original main supply path of the substation of the transformer substation at the open loop point to form a new open loop point.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method and system for adjusting an open-loop point of a remote standby automatic switching device. Background technique [0002] In the operation of the power system, in order to solve the power supply reliability of the 110kV power grid with one power supply in series for multiple substations, there is a system consisting of 110kV remote backup self-input devices for self-injection of backup power supplies in series substations, which can isolate faults step by step The method for realizing the self-switching power supply of the standby power supply of the series power substation realizes that the series power supply network restores the power supply of the loss-of-voltage substation to the maximum extent through the backup power supply when the main power supply fails. In the series power supply network, since there is generally only one main power supply source, if t...

AI Technical Summary

Problems solved by technology

In the series power supply network, since there is generally only one main power supply source, if the load of the sub-stations increases at the same time, the main power supply line is easily overloaded. If the open-loop point is not adjusted in time at this time, it is easy to cause the main power supply line to trip. Or equipment failure, seriously affecting the power supply reliability of the series power supply network

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