Method and device for detecting bearing bushes of PWR nuclear power plant generator set, computer and storage medium
A technology for pressurized water reactor nuclear power plants and generator sets, which is applied in the direction of motor generator testing, measuring devices, and measuring electricity. It can solve the problem of not being able to determine the source of the shaft current and the location of the bearing bush where the fault occurs, which affects the efficiency of fault handling, and is not very suitable. And other issues
Active Publication Date: 2018-12-07
GUANGDONG NUCLEAR POWER JOINT VENTURE +4
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Problems solved by technology
Such a monitoring method can only know the multi-point grounding of the large shaft, but cannot determine the source of the shaft current and the specific location of the bearing pad where the fault occurs, which affects the subsequent processing efficiency of the fault. Gensets with higher requirements are not very suitable
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[0039] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0040] figure 1 It is a schematic flowchart of a method for detecting a bearing of a pressurized water reactor nuclear power plant generator set in an embodiment. The pressurized water reactor nuclear power plant generator set includes a first bearing and at least two second bearings, and the first bearing is a grounded bearing. In one embodiment, the generator set is structured as figure 2 As shown, the generator set 200 can be a steam turbine generator set, and the generator set 200 includes a generator shaft 220, bearing bushes 221-228, high and medium pressure cylind...
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The invention relates to a method and device for detecting bearing bushes of a PWR nuclear power plant generator set, a computer and a storage medium. The generator set comprises a first bearing bushand at least two second bearing bushes, wherein the first bearing bush is in ground connection. The method comprises steps that abnormal shaft current waveforms of a generator when the bearing bush isin fault are recorded; when the generator set is working normally, ground connection of the second bearing bushes is simulated, and corresponding simulation shaft current waveforms are recorded; thefaulty second bearing bush is determined based on the abnormal shaft current waveforms and the simulation shaft current waveforms. The method is advantaged in that through recording the shaft currentwaveforms when the bearing bush is in fault and comparing with the simulation shaft current waveform of the bearing bushes in a ground connection mode, the source of the shaft current and the faulty bearing bush are determined, subsequent processing of the fault is facilitated, and safety of the PWR nuclear power plant generator set is improved.
Description
technical field [0001] The present invention relates to the technical field of generating sets of mega-kilowatt nuclear power plants, in particular to a detection method, device, computer equipment and computer-readable storage medium for bearing bushes of generating sets of pressurized water reactor nuclear power plants. Background technique [0002] In the generator set of the pressurized water reactor nuclear power plant, the main shaft of the generator is generally grounded at one point through a bearing bush of the carbon brush to ensure that the shaft voltage is at a low level and prevent oil film and insulation breakdown of the bearing bush. However, when the bearing pads other than the grounded bearing pads are grounded or the insulation drops, it will cause multi-point grounding of the large shaft. Due to the existence of shaft voltage, shaft current will appear on the large shaft, which will cause harm to the generator, so that Affect the safety of nuclear power pl...
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Login to View More IPC IPC(8): G01R31/34G01R19/00
CPCG01R19/0092G01R31/343
Inventor 唐志熙宋波林沛刘凯王晓夏玉秋王建涛房志强吴永涛宋文修
Owner GUANGDONG NUCLEAR POWER JOINT VENTURE