Simulation test platform for lightning-caused breaking of insulated wire in 10kV distribution network

An insulated wire and simulation test technology, applied in the direction of measuring electricity, measuring electrical variables, and testing dielectric strength, etc., can solve the problem of insulation line burnout, reduce the authenticity and reliability of lightning strike disconnection test data, and the existence of lightning strike current in insulated lines. Short time and other problems, to achieve the effect of withstand impulse voltage

Active Publication Date: 2019-03-08
DATONG POWER SUPPLY COMPANY OF STATE GRID SHANXI ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the existing power distribution network, because there are lightning protection devices on the line, the lightning current on the insulated line exists for a short time. After the insulation layer of the insulated line is broken down, it is usually due to the continuous power frequency current, resulting The insulated wire is blown, therefore, it is necessary to study the performance of the insulated wire after lightning strike to prevent the insulated wire from being blown by power frequency current
[0003] In the prior art, due to the lack o

Method used

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  • Simulation test platform for lightning-caused breaking of insulated wire in 10kV distribution network
  • Simulation test platform for lightning-caused breaking of insulated wire in 10kV distribution network
  • Simulation test platform for lightning-caused breaking of insulated wire in 10kV distribution network

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Embodiment 1

[0023] The following combination Figure 1 to Figure 3 Embodiment 1 of the present application will be described.

[0024] Such as figure 1 As shown, this embodiment provides a 10kV distribution network insulated wire lightning strike disconnection simulation test platform, the simulation test platform includes: impulse voltage unit, simulated tower wire unit, power frequency current source unit and data acquisition unit; simulated tower wire The unit includes at least three pole towers 13, the pole towers 13 are arranged in sequence, and the top of the pole towers 13 is provided with an insulating support 17, and two adjacent pole towers 13 are connected by an insulated wire 18, and the insulated wire 18 is connected to the insulating support 17; The wire 18 is connected to the insulating support 17 on the tower 13 on one side, and the impulse voltage unit is used to provide the simulated lightning impulse voltage to the insulated wire 18 on the tower 13;

[0025] Preferabl...

Embodiment 2

[0042] On the basis of the 10kV distribution network insulated conductor lightning strike disconnection simulation test platform in the first embodiment above, the simulation experiment platform can also be equipped with multiple sets of simulated tower line units, and between the simulated tower line unit and the power frequency current unit A timing control unit is set, and the timing control unit controls the conduction between multiple groups of simulated tower line units and the power frequency current unit according to the third preset time period, so as to simultaneously simulate multiple groups of insulated wires passing through the continuous power frequency current after lightning strikes Contrast the test to improve the efficiency of the lightning strike disconnection test.

[0043] Preferably, the simulated test platform is provided with multiple groups of simulated tower line units, and the simulated test platform also includes: a sequence control unit; the sequenc...

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Abstract

The invention discloses a simulation test platform for lightning-caused breaking of an insulated wire in a 10kV distribution network. The simulation test platform includes an impulse voltage unit, a simulation tower wire unit, a power frequency current source unit and a data acquisition unit, wherein the impulse voltage unit is connected to an insulated pillar on a tower at one side through the insulated wire; the impulse voltage unit is used to provide a simulation lightning impulse voltage to the insulated wire on the tower; the power frequency current source unit is connected to an insulated pillar on a tower at the other side through a third insulated wire; the power frequency current source unit is configured to provide a set power frequency current to the insulated wire on the towerafter the impulse voltage unit generates the simulation lightning impulse voltage and after the first preset time period; and the data acquisition unit is used to collect lightning overvoltage and thewire current on the insulated wire. Through the technical solution in the simulation test platform for lightning-caused breaking of an insulated wire in a 10kV distribution network, after simulationlightning impulse voltage is broken down and insulated, a continuous power frequency current is provided for the generated arc to improve the authenticity of the lightning-caused breaking test.

Description

technical field [0001] This application relates to the technical field of lightning strike test, in particular, to a simulation test platform for lightning strike disconnection of insulated conductors of 10kV distribution network. Background technique [0002] With the large-scale transformation of the distribution network, more and more distribution network lines are transformed from bare wires to insulated wires. For such a distribution network composed of insulated wires, lightning strikes and disconnection are the cause of engine power distribution network faults. main reason. For the existing power distribution network, because there are lightning protection devices on the line, the lightning current on the insulated line exists for a short time. After the insulation layer of the insulated line is broken down, it is usually due to the continuous power frequency current, resulting The insulated wire is blown. Therefore, it is necessary to study the performance of the in...

Claims

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Application Information

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IPC IPC(8): G01R31/12
CPCG01R31/1272
Inventor 何若太赵国伟赵培峰陈晓峰樊兴超陈运武苏雁军薛辉冯利伟
Owner DATONG POWER SUPPLY COMPANY OF STATE GRID SHANXI ELECTRIC POWER
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