Electric generator iron loss test apparatus and experimental method

A technology of iron loss test and generator, applied in the direction of motor generator test, measurement device, measurement of electrical variables, etc., can solve the problems of generator stator damage, inconvenient test development, etc., to improve enthusiasm, intuitive test results, and improve work efficiency. The effect of efficiency

Inactive Publication Date: 2016-01-20
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2
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AI Technical Summary

Problems solved by technology

According to statistics, the number of man-hours consumed in the core winding process accounts for as high as 77.2% of the entire iron loss test process, which brings great inconvenience to the test.
In addition, during the cable winding process, trampling on the iron core and wire rod for a long time will also bring the contaminated dirt into the generator, and improper operation during the dragging process will easily cause unnecessary damage to the generator stator

Method used

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  • Electric generator iron loss test apparatus and experimental method
  • Electric generator iron loss test apparatus and experimental method
  • Electric generator iron loss test apparatus and experimental method

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Experimental program
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Embodiment Construction

[0024] Below in conjunction with accompanying drawing and example the present invention will be further described:

[0025] figure 1 Among them, a generator 4 iron loss test device, including a group test cable 11 and a 10kV switch cabinet 2 electrically connected to the group test cable 11, and a power cable 3 connected to the factory power;

[0026] One end of the group test cable 1 is directly connected to the switch cabinet, and the other end is wound around the generator 4 iron core to set the number of turns and then connected to the switch cabinet. The switch cabinet is connected to the power supply through the power cable 3; the group test cable 1 includes several groups and test cables with different lengths; the group test cable 1 is a test cable that can pass a large current for a long time for the iron loss test of the generator 4;

[0027] In the test, the switchgear is connected to the 6kV utility power, and each test cable is connected to the switchgear after w...

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Abstract

The invention discloses an electric generator iron loss test apparatus and an experimental method. According to the invention, one end of a grouping test cable is connected directly with a switchgear, the other end is wounded onto an iron core of an electric generator for a set number of turns and then connected to the switchgear, and the switchgear is connected with a power supply through a power supply cable; the grouping test cable comprises a plurality of groups of test cables of different number and length. The invention has the beneficial effects of being capable of greatly accelerating the test connection link, ensuring a safe and reliable test, meanwhile greatly reducing work hours and improving work efficiency.

Description

technical field [0001] The invention relates to the technical field of generator iron loss experiments, in particular to a generator iron loss test device and an experiment method. Background technique [0002] At present, my country's power industry has entered the stage of large power grids and large units, and thermal power plants are still the theme of my country's power industry. The stator core of the generator is assembled by stacking silicon steel sheets. Due to the reasons of assembly and manufacturing and the action of heat and mechanical force during operation, the insulation between the silicon steel sheets is damaged, and the iron core is partially short-circuited and heated. In severe cases, it will be damaged. The stator insulates the wire rods, causing downtime accidents. According to DL / T596-1996 "Electrical Equipment Handover and Preventive Test Regulations", after "newly assembling or replacing or repairing the silicon steel sheet, when replacing the wind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/26G01R31/34
Inventor 李明王安东曹志伟孙善华孙福春张围围许光可邱涛
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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