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Substation line protection non-power-off maintenance device and method

A technology for line protection and maintenance devices, applied in the fault location, detecting faults according to conductor types, etc., can solve problems such as affecting users' power consumption

Active Publication Date: 2017-09-01
LISHUI POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, when overhauling the line protection measurement and control device, it is necessary to cut off the power of the substation, and then overhaul the line protection measurement and control device in the substation, which affects the power consumption of users.

Method used

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  • Substation line protection non-power-off maintenance device and method
  • Substation line protection non-power-off maintenance device and method
  • Substation line protection non-power-off maintenance device and method

Examples

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Embodiment

[0047] Embodiment: A substation line protection non-stop maintenance device of this embodiment, such as figure 1 , figure 2 , image 3 As shown, it includes the second line protection measurement and control device 2, the power supply module 3 for supplying power to the second line protection measurement and control device 2, the transfer switch QK1, the transfer switch QK2, the transfer switch QK3 and the transfer switch KK, the contact 2 of the transfer switch QK1, Contact 6, contact 10, and contact 14 are respectively connected to a first test line, and contact 3, contact 6, and contact 9 of the changeover switch QK1 are respectively connected to the three current input ends of the second line protection measurement and control device 2. Electrically connected, the contact 16 of the transfer switch QK1 is electrically connected to the ground terminal of the second line protection measurement and control device 2, and the contact 1, contact 5, contact 9 and contact 13 of t...

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Abstract

The invention discloses a substation line protection non-power-off maintenance device and method. The device comprises a second line protection measurement and control device, a power supply module for providing power for the second line protection measurement and control device, a change-over switch QK1 and a change-over switch QK2. Contacts 2, 6, 10 and 14 of the change-over switch QK1 are respectively connected with a first test line; contacts 3, 6 and 9 of the change-over switch QK1 are electrically connected with three current input ends of the second line protection measurement and control device respectively; a contact 16 of the change-over switch QK1 is electrically connected with the ground end of the second line protection measurement and control device; and contacts 1, 5, 9 and 13 of the change-over switch QK1 are respectively connected with a second test line. When a line protection measurement and control device in a substation needs maintenance, another line protection measurement and control device is utilized to replace the original line protection measurement and control device to work, so that substation does not need to cut off power, and power use of users is not influenced.

Description

technical field [0001] The invention relates to the technical field of substation equipment maintenance, in particular to a substation line protection non-stop maintenance device and maintenance method. Background technique [0002] The 35KV substation is equipped with a line protection measurement and control device to monitor the three-phase current and voltage in the substation. When the three-phase current and voltage are abnormal, the circuit breaker in the substation is controlled to disconnect to protect the lines in the substation. At present, when overhauling the line protection measurement and control device, it is necessary to cut off the power of the substation, and then overhaul the line protection measurement and control device in the substation, which affects the power consumption of users. Contents of the invention [0003] The purpose of the present invention is to overcome the current technical problem that the substation needs to be cut off when the line...

Claims

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Application Information

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IPC IPC(8): G01R31/08
CPCG01R31/086
Inventor 吴伟斌胡标周懿梅进吴琳张冰刘家和徐鸿川鲍玲虹张莉
Owner LISHUI POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER
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