Generator air gap monitoring system and monitoring method
A generator and air gap technology, applied in the field of power systems, can solve problems such as damage to the surface of the stator and rotor, friction between the stator and the rotor, reduction of the air gap between the stator and the rotor, etc.
Active Publication Date: 2019-11-22
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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Problems solved by technology
[0004] When the generator is working, due to the internal parts of the generator falling off, heating or excessive load, the stator or rotor will be deformed, and the relative position of the stator and rotor will change, so that the air gap between the stator and rotor will be reduced, even It may cause friction between the stator and the rotor, resulting in a stator-rotor suction failure, damaging the surface of the stator and rotor, and causing damage to the wind turbine
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[0029] Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention. The present invention is by no means limited to any specific configurations and algorithms presented below, but covers any modification, substitution and improvement of elements, components and algorithms without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the present invention.
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The invention discloses an electric generator air gap monitoring system and a monitoring method, and relates to the field of electric power systems. The electric generator air gap monitoring system comprises a light conduction device, a light source, a light detection device and a processor, wherein the light conduction device is arranged between a stator and a rotor; the light source is connected with the light conduction device and inputs a light signal to the light conduction device; the light detection device is connected with the light conduction device; the light detection device receives and detects a light signal output by the light conduction device; the processor is connected with the light detection device; and the processor determines the status parameter of an electric generator air gap based on the light signal output by the light conduction device. The problem of damage to a wind driven generator caused by an air gap accident is solved.
Description
technical field [0001] The invention relates to the field of power systems, in particular to a generator air gap monitoring system and monitoring method. Background technique [0002] The air gap structure is an important structure in a large generator, and the width of the air gap, the deformation in the air gap, or the temperature change will have a serious impact on the performance of the generator. [0003] For example, a wind generator is a device that converts wind energy into electrical energy, and the generator includes a stator and a rotor. The generator is usually an outer rotor inner stator structure, or an inner rotor outer stator structure. figure 1 It is a structural schematic diagram of the stator, rotor and air gap of the generator in the prior art, such as figure 1 As shown, in order to ensure that the rotor 11 can rotate freely around the stator 10 and prevent the friction between the stator and the rotor from damaging the wind turbine, an air gap 12 is k...
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IPC IPC(8): G01B11/14
CPCG01B11/14
Inventor 聂峰王百方
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD