Stator core compaction state monitoring device, monitoring method and monitoring equipment
A state monitoring device and stator core technology, applied in the direction of motor generator testing, etc., can solve the problems of insensitivity of monitoring, unit shutdown, economic loss, etc., to improve sensitivity and reliability, improve operation control efficiency, and improve robustness Effect
Active Publication Date: 2022-07-05
DONGFANG ELECTRIC MACHINERY
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Problems solved by technology
Under long-term operating conditions, the compression force of the stator core will gradually decrease under the combined action of various factors. If timely monitoring and effective early warning and control are not obtained, the stator core will be loosened, and the generator set will vibrate and noise. Even accidents such as punching broken teeth, burning damage and wire rod breaking pressure will cause the unit to stop abnormally and cause huge economic losses
At present, during the operation of the generator set, the compression state monitoring component of the stator core of the hydro-generator is prone to insensitive monitoring and even false alarms
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[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of this application.
[0021] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation shown in the drawings Or the positional relationship is only for the convenience of describing the pres...
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The embodiment of the invention provides a stator core compaction state monitoring device, monitoring method and monitoring equipment, and the method comprises the following steps: taking a measurement point where abnormal information is located as a first abnormal measurement point when any measurement point in a current measurement point group has the abnormal information; closing the current measuring point group, and starting the standby measuring point group; obtaining a measuring point where the abnormal information is located in the standby measuring point group to obtain a second abnormal measuring point; a common monitoring area of the first abnormal measuring point and the second abnormal measuring point is determined, and the area where the abnormal cross-core screw is located is obtained; wherein the measuring point group comprises a plurality of measuring points which are respectively arranged at different center-penetrating screws, each measuring point is configured to measure the axial force of the plurality of center-penetrating screws, and the distance between the adjacent measuring points is an irrelevant closest distance; and the measuring points in different measuring point groups are respectively arranged at different center penetrating screw rods. According to the embodiment of the invention, the abnormal cross-core screw with problems can be accurately positioned, the monitoring assembly can be rechecked, and the false alarm rate of the system is reduced.
Description
technical field [0001] The present application relates to the technical field of on-line monitoring of generator set operation, and in particular to a monitoring device, monitoring method and monitoring equipment for the compression state of a stator iron core. Background technique [0002] When the generator is running, the stator core is subjected to the combined action of mechanical force, thermal stress and electromagnetic force. Under long-term operating conditions, the compression force of the stator core will gradually decrease under the combined action of various factors. If timely monitoring and effective early warning and control are not obtained, the stator core will be loosened, resulting in vibration and noise of the generator set. Accidents such as punching and broken teeth, burning damage and wire rod breaking pressure will cause the unit to stop abnormally and cause huge economic losses. At this stage, the compression state monitoring component of the stator...
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IPC IPC(8): G01R31/34
CPCG01R31/343
Inventor 高涛铎林刘云平周军长邹应冬万慧明张猛刘雄赵政雷唐伟
Owner DONGFANG ELECTRIC MACHINERY