Method, device and system for automatic switching control of incoming line equipment for substations

It is a technology of standby self-switching and substation, which is applied in the field of electric power, which can solve problems such as power failure in substations, and achieve the effect of preventing power failure in substations and solving power failure in substations

Active Publication Date: 2019-04-12
STATE GRID BEIJING ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present invention provide a method, device and system for controlling incoming line standby automatic switchover of substations, so as to at least solve the technical problem of power failure in the substation due to the failure of standby automatic switchover

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  • Method, device and system for automatic switching control of incoming line equipment for substations
  • Method, device and system for automatic switching control of incoming line equipment for substations
  • Method, device and system for automatic switching control of incoming line equipment for substations

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Embodiment Construction

[0024] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0025] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circ...

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Abstract

The invention discloses an incoming line backup power automatic switching control method, device and system for a transformer substation. The method includes the steps that when a working power supply breaks down, a first switch is controlled to execute backup power automatic switching motion, and a second switch is controlled to execute backup power automatic switching motion after first preset time; a first time interval is determined according to first time when the working power supply breaks down and the first preset time; within the first time interval, the execution result generated after the first switch executes the backup power automatic switching motion is acquired in real time; when the execution result shows that execution succeeds, the backup power automatic switching motion of the second switch after the first preset time is canceled. The technical problem of transformer substation power failure caused by the fact that backup power automatic switching is not started is solved.

Description

technical field [0001] The present invention relates to the field of electric power, in particular to a control method, device and system for automatic switchover of incoming line equipment for substations. Background technique [0002] At present, substations generally use backup power self-injection devices to ensure the reliability and continuity of power supply. In 110kV and below 110kV substations with internal bridge connection, the strategy of incoming line standby automatic switching is mostly adopted as follows: when it is detected that the working power supply voltage disappears and the working power switch is in the jump position, the backup power supply starts. The self-transfer strategy of the bus tie switch on the medium and low voltage side is carried out by starting the auxiliary contact of the medium and low voltage main switch. [0003] However, if the incoming line switch, bus tie switch or related secondary devices and secondary circuits fail, for exampl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06
CPCH02J9/061
Inventor 祁波李春清金洪涛
Owner STATE GRID BEIJING ELECTRIC POWER
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