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Automatic parallel off and parallel control device for sectionalized power supply of single busbar

An automatic control device and a single-bus segment technology, which is applied to circuit devices, electrical components, and AC network circuits, etc., can solve problems such as low degree of automation, bus splitting and parallel operation failure, voltage transformer secondary voltage reverse charging, etc. , to achieve the effect of improving reliability

Active Publication Date: 2013-04-03
JINGXING COUNTY POWER SUPPLY +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the unparallel operation of the busbars in the substation needs to be operated by staff, and the degree of automation is low. It is easy to fail to disassemble the parallel operation of the busbars, resulting in the phenomenon of reverse charging of the secondary voltage of the voltage transformer.

Method used

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  • Automatic parallel off and parallel control device for sectionalized power supply of single busbar
  • Automatic parallel off and parallel control device for sectionalized power supply of single busbar
  • Automatic parallel off and parallel control device for sectionalized power supply of single busbar

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Embodiment Construction

[0041] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0042] The circuit diagram of single bus segment power supply in power system is as follows: figure 2 As shown, there are isolation switch A1 and isolation switch B2 on the segmental bus respectively, the two segmental busbars are connected by bus tie switch 3, and the first isolating switchboard and the first small busbar are sequentially connected to each other. Switch 4, first voltage transformer 6, first PT secondary insurance 8 and first small bus switch 10, second isolating switch 5 and second voltage transformer are sequentially connected between the second section bus and the second small bus 7. The second PT secondary fuse 9 and the second small bus switch 11, the first small bus and the second small bus are connected through a small bus parallel switch 12.

[0043] A deparallel automatic control device for single-bus section power supply, including a volta...

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Abstract

The invention discloses an automatic parallel off and parallel control device for sectionalized power supply of a single busbar and an automatic parallel off and parallel control device based automatic parallel off and parallel control method for sectionalized power supply of the single busbar, and the method and the device are applied to the field of transmission line detection and control. The automatic control device comprises a voltage detection unit, a switch state monitoring unit, a single chip microcomputer control unit, a drive unit, a direct-current power supply unit and a network voltage alarm unit. The device and the method are capable of monitoring voltage amplitude and switch state of sectionalized lines of the single busbar in real time and achieving automatic control of parallel off and parallel operation of the sectionalized lines of the single busbar according to monitoring information.

Description

technical field [0001] The invention relates to a power transmission line detection and control device, in particular to an automatic control device for unparalleling power supply of a single busbar in sections. Background technique [0002] With the development of computer technology and the digitalization of the secondary system measurement and protection devices of power equipment, the power system puts forward higher requirements for power equipment with combined functions such as measurement, protection, control, monitoring, and transmission, so as to ensure the power grid Safe, reliable and high quality operation. [0003] In the single-bus distribution station of the power system, the single-bus section operation mode is generally adopted, that is, the single busbar is set up in sections through the bus tie switch, and each section of the busbar supplies power to its own small busbar, and each section of the busbar is connected to the corresponding Disconnectors, fus...

Claims

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Application Information

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IPC IPC(8): H02J3/00
Inventor 李强刘永新张保勇
Owner JINGXING COUNTY POWER SUPPLY
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