Turbogenerator rotor winding turn-to-turn electromagnetic pulse wave characteristic detection device and method

A technology of turbo generator and rotor winding, which is applied in the direction of electric winding test, motor generator test, measuring device, etc., and can solve the problems that cannot be done

Active Publication Date: 2021-09-17
HANGZHOU HENUOVA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unable to achieve targeted and precise analysis of waveform data

Method used

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  • Turbogenerator rotor winding turn-to-turn electromagnetic pulse wave characteristic detection device and method
  • Turbogenerator rotor winding turn-to-turn electromagnetic pulse wave characteristic detection device and method
  • Turbogenerator rotor winding turn-to-turn electromagnetic pulse wave characteristic detection device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as Figure 1-8 As shown in the present invention, a device for detecting the inter-turn electromagnetic pulse vibration characteristics of a turbogenerator rotor winding includes a super-large-capacity internal resistance signal source, and the super-large-capacity internal resistance signal source is connected to an ultra-high-speed timing control circuit , the ultra-high-speed timing control circuit is connected to the positive and negative poles of the rotor winding through the parasitic inductive power supply through the positive and negative load guide wires, and the positive and negative poles of the rotor winding are connected to the ultra-high-speed acquisition circuit through the operational amplifier circuit.

[0043] The super-large-capacity internal resistance signal source matches the average time constant of the circular polarization characteristic of each turn of the winding, and can generate the energy width of the power circular polarization charact...

Embodiment 2

[0064] Full speed 650MW rotor 1# coil and 2# coil bridge line position is Figure 15 Middle A and a;

[0065] Such as Figure 9 As shown, all 62 turns of 1-8# coils of a 1# full-speed 650MW healthy rotor are clearly visible. 1# coil and 2# coil have obvious characteristics of the bridge line, and the transient wave characteristics of each turn of the rotor are healthy.

[0066] Such as Figure 10 As shown, all 62 turns of 1-8# coils of a 2# full-speed 650MW healthy rotor are clearly visible. 1# coil and 2# coil have obvious characteristics of the bridge line, and the transient wave characteristics of each turn of the rotor are healthy.

Embodiment 3

[0068] Full speed 650MW rotor 1# coil and 2# coil bridge line position is Figure 15 Middle A and a;

[0069] Such as Figure 11 As shown, all 62 turns of the 1-8# coils of a 2# full-speed 650MW sub-healthy rotor are clearly visible except that the 5th and 6th turns of the 1# coil are combined into one sine wave. 1# coil and 2# coil have no obvious characteristics of bridge line, 2# coil 1, 2 turn sine wave amplitude is too large compared with the previous cycle, it is judged that there is oil pollution, and necessary cleaning work is required.

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Abstract

The invention provides a turbonator rotor winding turn-to-turn electromagnetic pulse wave characteristic detection device and method, and belongs to the technical field of turbonator rotor winding turn-to-turn detection. A high-order mutation electric field of an avalanche polarization edge is generated through a signal source and a time sequence control circuit, circular polarization electromagnetic waves which are symmetrically deflected by 180 degrees and are generated through a parasitic inductive power supply are clockwise or anticlockwise coupled to a positive electrode and a negative electrode through positive and negative electrode load wave guide lines, and a first sine wave is generated through mutual inductance of a positive electrode first turn and a negative electrode first turn in sequence; energy can return to the inductive parasitic power supply and is sequentially conducted to the second turn due to time delay; the inductive power supply and the second turn start circular polarization to feed back energy to the first turn; the turns are fed back and superposed step by step in sequence, and each coupling turn shows sine waves with the same time constant. The real electromagnetic characteristics of each forward or reverse symmetrical corresponding turn of the positive and negative pole windings can be clearly, simply and intuitively presented in a one-to-one correspondence manner.

Description

Technical field: [0001] The invention provides a device and method for detecting electromagnetic pulse vibration characteristics between turns of a rotor winding of a turbogenerator, belonging to the technical field of interturn detection of a rotor winding of a turbogenerator. Background technique: [0002] At present, for the detection of the state of the rotor winding of the large-scale hidden pole turbogenerator at home and abroad, lumped parameter detection is generally used, including DC resistance, insulation resistance, AC impedance, high-frequency AC impedance, etc.; distributed parameter detection includes open transformer method, distribution Voltage method, RSO single pulse method, large coil single AC pulse test method, etc. The detection of the inter-turn state of the winding is relatively rough, and only a rough cumulative characteristic judgment can be made for the rotor winding coil. From the waveform, most of them can only be analyzed as a whole. At most, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/72G01R31/34
CPCG01R31/72G01R31/346
Inventor 张跃武田昆鹏张骞一查卫华刘泓曹晓晖王学亮刘东兵李嘉敏刘驰程吕振范晨李苗叶魏文王梓瑞
Owner HANGZHOU HENUOVA TECH CO LTD
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