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GIS bus contact defect experiment simulation device and method

An experimental simulation and defect technology, applied in measuring devices, instruments, measuring electricity and other directions, can solve the problems such as difficulty in simulating local poor contact of contact fingers, inability to simulate increased contact resistance, and inability to simulate operating conditions, etc. Simple structure, low cost and wide application range

Pending Publication Date: 2020-09-15
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this patent cannot simulate the increase of contact resistance due to the decrease of contact fastening force and metal aging, and cannot simulate the real operation status of GIS. For insufficient contact finger pressure, poor contact of contact fingers and conduction of materials in the contact area The simulation of contact defects such as sexual degradation is difficult to achieve
In addition, this patent uses a large current generator to provide current, which makes the model bulky and less convenient and easy to use

Method used

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  • GIS bus contact defect experiment simulation device and method
  • GIS bus contact defect experiment simulation device and method
  • GIS bus contact defect experiment simulation device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A GIS busbar contact defect experimental simulation device, such as figure 1 , including GIS simulator, temperature measuring element 8, data acquisition instrument, ammeter, voltage regulator and AC power supply. The voltage regulator, ammeter and GIS simulator are connected in series to form a circuit. The acquisition instrument adopts JK808, the voltage regulator adopts TDGC-6 voltage regulator, and the AC power supply adopts 220V power supply.

[0028] Such as figure 2 , the GIS simulator includes the shell and the insulator inside the shell, the moving contact arm 1, the adjustable plum blossom contact and the static contact arm 2, the moving contact arm 1, the adjustable plum blossom contact and the static contact arm 2 are connected in sequence, and the moving contact arm 1 And the static contact arm 2 is fixed inside the shell through insulators. The adjustable plum blossom contact includes 6 contact fingers 4, 2 fixed plates 7 and 4 detachable fastening sprin...

Embodiment 2

[0030] A kind of GIS single-branch bus defect experimental simulation method corresponding to embodiment 1, specifically:

[0031] By reducing the number of fastening springs 3 to simulate the decline in the contact fastening force between the contact fingers 4 and the moving contact arm 1 due to the aging of the plum blossom contact, by connecting the resistance sheet 5 in series between part of the contact fingers 4 and the moving contact arm 1, the rest An insulating sheet 6 is set between the contact finger 4 and the movable contact arm 1 to control the number of contact fingers 4 in contact with the movable contact arm 1, thereby simulating the increase in contact resistance due to metal aging and increasing the communication on a single contact finger 4. flow, the resistance value of resistor sheet 5 is 1Ω, increase the heating power, simulate overheating defects, control the ambient temperature and humidity of the GIS simulator by changing the ventilation and heat dissip...

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Abstract

The invention relates to a GIS bus contact defect experiment simulation device and method. The device comprises a GIS simulator, temperature measuring elements, a data acquisition instrument, a temperature and humidity instrument, an ampere meter, a voltage regulator and an AC power supply. The voltage regulator, the ampere meter and the GIS simulator are connected in series to form a loop; the voltage regulator is connected with the AC power supply; the temperature measuring elements are arranged on a movable contact arm, an adjustable plum blossom contact and a housing and are connected withthe data acquisition instrument; the adjustable plum blossom contact is a plum blossom contact with a variable number of fastening springs, and a resistor disc or an insulating sheet can be insertedbetween a plurality of contact fingers of the adjustable plum blossom contact and the movable contact arm; the infrared thermal imager measures the temperature distribution of the GIS simulator housing; and the temperature and humidity instrument measures the temperature and humidity of the environment where the GIS simulator is located. Compared with the prior art, the device has the advantages of being convenient to adjust, simple in structure, wide in application range and the like.

Description

technical field [0001] The invention relates to the technical field of high-voltage electrical equipment testing, in particular to a GIS busbar contact defect experiment simulation device and method. Background technique [0002] Gas-insulated metal-enclosed switchgear (GIS, Gas Instulated Switchgear) is an important device in the power system. It uses gas insulation and has the characteristics of small size and easy maintenance. Bus bar is one of the key components of GIS, and it is a high-voltage, high-current power transmission equipment. The GIS busbar is composed of conductive rods, shells, insulating supports and insulating gas. Both ends of the conductive rods are inserted into the contact base, and the contact base is fixed on the insulating basin by bolts. Due to the Joule heat loss of the conductor and the induced eddy current loss in the shell, the running GIS busbar is in a heating state. Under normal circumstances, the contact temperature of the busbar is the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/56G01D21/02
CPCG01D21/02G01R31/56
Inventor 高凯曹培李莉华徐鹏吴天逸金立军
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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