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Fragmented spare power automatic switching implementation method for multiple power incoming lines

A segmented self-switching and realization technology, which is applied in the direction of emergency power supply arrangements, electrical components, circuit devices, etc., can solve problems such as unable to adjust the operation mode, and achieve the effect of improving reliability

Active Publication Date: 2015-03-25
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the existing standby automatic switch is connected, it has been determined whether the incoming line is the power supply end or the load end, and it cannot be adjusted according to the operation mode.

Method used

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  • Fragmented spare power automatic switching implementation method for multiple power incoming lines
  • Fragmented spare power automatic switching implementation method for multiple power incoming lines
  • Fragmented spare power automatic switching implementation method for multiple power incoming lines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Examples are attached figure 2 The common two-section bus and three power supply incoming lines are shown in the wiring mode incoming line description. The implementation method and logic are as follows:

[0041] 1. Determine whether the incoming line is a working power supply

[0042] When "1" is set to "1": 1DL is in position and after 1s delay, the incoming line 1 is judged to be the working power; power supply.

[0043] When "Whether incoming line 1 is active" is set to "0": it is judged that incoming line 1 is a non-working power supply

[0044] When "Incoming line 2 is active" is set to "1": 2DL is judged to be the working power supply after 1s delay in close position; when 2DL is in the position and 1s delay, it is judged that incoming line 1 is non-working power supply.

[0045] When "whether the second incoming line is active" is set to "0": it is judged that the second incoming line is a non-working power supply

[0046] When "Whether the ...

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Abstract

The invention discloses a fragmented spare power automatic switching implementation method for multiple power incoming lines. N incoming lines refer to n incoming lines which can serve as the power incoming lines, incoming lines which can only serve as loads have no access to spare power automatic switching equipment and are not included in the n incoming lines, charging, discharging and outlet logic are automatically adjusted according to the operation mode of primary equipment, corresponding spare power automatic switching logic can be started particularly when the incoming lines are turned from the power incoming lines into load lines or from load lines into to the power incoming lines, action reliability of the spare power automatic switching equipment is improved, and the situation that because the operation mode is fixed during access according to existing spare power automatic switching technology, the spare power automatic switching equipment cannot act in certain operation modes and consequently a large-area outage is caused is avoided.

Description

technical field [0001] The present invention relates to a method for realizing self-switching, in particular to a method for realizing self-switching in subsections with multiple power supply incoming lines. [0002] Background technique [0003] The number of substations of county-level power supply companies is relatively small, and users in a large area are often powered by a 110kV substation. If the 110kV bus of the substation fails, it will cause a large-scale power outage. In order to ensure the reliability of power supply, some 110kV substations are connected with two or more 110kV power supply lines on a section of the bus as attached figure 1 As shown, at the same time, in order to prevent the loss of voltage of the busbar, a self-injection protection device is also installed in the secondary setting. This leads to the backup and self-switching mode under the wiring mode of multiple power supply lines. For example, the 110kV side of the 110kV Beicuo Substation of...

Claims

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Application Information

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IPC IPC(8): H02J9/06
Inventor 林海源吕庭钦陈建洪林缔陈佑健陈雯方宾义王翠霞
Owner STATE GRID CORP OF CHINA
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