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Air switch stage difference coordination test device and test method

A technology of step-by-step coordination and testing equipment, which is applied in the direction of measuring device shells and circuit breaker testing, etc., can solve the problems that testers are easily injured by electric shocks, testers are highly dangerous, and life-threatening, so as to reduce the difficulty of test technology, The effect of saving maintenance time during power outages and preventing leapfrog tripping

Inactive Publication Date: 2014-10-29
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is very dangerous to operate, and people are prone to electric shock, which endangers life safety
[0004] The test personnel are easily injured by electric shock, especially for the power supply air switch with microcomputer protection device connected with a short circuit, the risk of electric shock is greater for the test personnel

Method used

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  • Air switch stage difference coordination test device and test method
  • Air switch stage difference coordination test device and test method
  • Air switch stage difference coordination test device and test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] See Table 1 and Table 2 for the technical parameters of the air-opening differential fit test device:

[0024] Table 1 Mechanical and environmental parameters

[0025]

[0026] Table 2 Rated electrical parameters

[0027]

[0028] The connection plug 3 or the terminal post 4 of the experimental device of the embodiment 1 and the embodiment 2 allow a long-term connection of a current of 20A.

[0029] Embodiment 1 is applied to protect the most basic and commonly used electric quantity test, and is simple, flexible and convenient to use.

[0030] When in use, connect the terminal plug 3 of the test device to the secondary terminal of the air switch, and connect the entire circuit. When performing the test, turn on the reset switch AN1 (label 1 in the figure) to detect the upper-level fusing performance of the air switch.

Embodiment 2

[0032] On the basis of Example 1, a shift switch is added, and 4 gears are set: 30A, 50A, 100A, ∞A, so as to adapt to different level difference tests by using connecting lines with different connectors.

[0033] Check through this device: check each feeder line of the DC screen, detect the operating current value of each DC switch, and the coordination strength of switches at all levels; read the configuration value of the power switch of the substation AC and DC control system device screen; check the circuit wiring and DC Whether the parameter setting is correct.

[0034] The invention is applicable to various types of AC and DC control devices, simplifies the test process, improves the use efficiency, operates according to the operation prompts during the test, and reduces the technical difficulty and danger of the test personnel. The "one-button" protection test goal has been realized. In the test process of electrical quantity, non-electrical quantity test can be embedd...

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PUM

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Abstract

The invention relates to an air switch stage difference coordination test device and an air switch stage difference coordination test method. The air switch stage difference coordination test device comprises a reset switch AN1 and a connection plug, wherein two ends of the reset switch AN1 are connected with the connection plug through electric wires, and the connection plug is connected with a secondary terminal of an air switch. The air switch stage difference coordination test device further comprises a shifting switch AN2 and a resistor, wherein one end of the shifting switch AN2 is connected with the reset switch AN1, different gears of the shifting switch AN2 are connected with the resistors different in resistance value, and the other end of each resistor, which is not connected with each gear of the shifting switch AN2, is connected with the connection plug. The air switch stage difference coordination test method includes: connecting the connection plug of the air switch stage difference coordination test device with the secondary terminal of the air switch so as to connect a whole electric circuit; switching on the reset switch AN1 in a test so as to detect superior fusing performance of the air switch. The air switch stage difference coordination test device and the air switch stage difference coordination test method have the advantages of being suitable for various types of alternating current and direct current control devices, simplifying a test process, improving use efficiency, prompting work according to operation in the test, and reducing technology difficulty and dangerousness of test personnel.

Description

technical field [0001] The invention relates to the fields of electrical switch configuration for electric power, industrial and mining enterprises, and building construction, and in particular to an air-opening step-by-step matching test device and a test method for detecting the level-by-step matching satisfaction of switches. Background technique [0002] In the power supply network, a short-circuit fault occurs on the line protected by a lower-level relay protection device. Due to the short distance of the power supply line or the lack of sensitivity of the relay protection device, all the relay protection devices at the upper level may detect the short-circuit current and fail. The occurrence of false tripping is called leapfrog tripping. For the same reason, this situation will also occur if there is a configuration difference requirement for AC and DC air switches. In order to avoid the occurrence of over-level tripping of the circuit breaker, it is necessary to test...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327G01R1/04
Inventor 韩成尉李松涛卢学济卜大鹏付振强梁鞍张文革张健费君胜单英杰王选弘徐明虎
Owner STATE GRID CORP OF CHINA