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An overvoltage damping device of interstice

A technology of damping device and electrical clearance, applied in the field of electric power system, can solve problems such as restarting of circuit breakers, economic losses, and affecting safe power supply

Inactive Publication Date: 2008-07-09
凌海科诚电气有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the large-capacity capacitor bank is connected, it is easy to generate more than 2 times the overvoltage and a large inrush current on the capacitor bank. When the capacitor bank is disconnected, sometimes it will cause the circuit breaker to restart, and the capacitor bank will generate 3 times or more. The overvoltage and greater inrush current can easily cause accidents in capacitors, discharge coils, circuit breakers and other equipment, causing great economic losses and affecting the safe power supply

Method used

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  • An overvoltage damping device of interstice

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Embodiment Construction

[0009] As shown in the figure, the present invention has an insulating cylinder 4, in which a non-inductive resistor 5 and a gas arrester (electrical gap) 3 are fixed, and the non-inductive resistor 5 and the gas arrester 3 are connected in series. An end cover 2 is provided at the port of the insulating cylinder 4 , and connecting terminals 1 are respectively provided on the bottom surface of the insulating cylinder 4 and the end cover 2 . When in use, the electric gap overvoltage damping device is connected in parallel with the reactor L connected in series with the capacitor bank C, and GB in Fig. 2 is the circuit breaker of the capacitor bank. According to the height of the series reactor, the height of the device can be adjusted appropriately so that it can be conveniently installed on the two outlet terminals of the reactor L. Based on its special installation method, the energy-dissipating resistor must be made into a non-inductive resistor to avoid affecting the operat...

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PUM

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Abstract

The invention relates to a clearance overvoltage damping device, including an insulation cylinder, the interior of which is fixedly provided with a non-inductance resistor and a gas discharge tube, the non-inductance resistor is connected with the gas discharge tube in series, and terminal blocks are arranged on the insulation cylinder. The overvoltage which is caused by the transition process when throwing and cutting a capacitor group can be inhibited effectively, the invention can prevent the occurrence of the accidents of a capacitor, a discharge coil, a circuit breaker and other equipments, ensures the safe power supply and has obvious damping effect for the transition process which is caused by switching-on and re-ignition, the protection capability is strong and the service life is long.

Description

technical field [0001] The invention relates to a device in the field of power system technology, in particular to a capacitor bank-based electric gap overvoltage damping device. Background technique [0002] At present, in order to improve the quality and efficiency of power supply in the power system, large-capacity shunt capacitors and filter capacitors are often connected to the power grid. When the large-capacity capacitor bank is connected, it is easy to generate more than 2 times the overvoltage and a large inrush current on the capacitor bank. When the capacitor bank is disconnected, sometimes it will cause the circuit breaker to restart, and the capacitor bank will generate 3 times or more. The overvoltage and larger inrush current can easily cause accidents in capacitors, discharge coils, circuit breakers and other equipment, causing great economic losses and affecting safe power supply. Contents of the invention [0003] The purpose of the present invention is ...

Claims

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Application Information

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IPC IPC(8): H02H9/06H02H9/02
Inventor 崔博耿立娟张洪生周猛
Owner 凌海科诚电气有限责任公司
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