Method and apparatus for monitoring machinery vibration
First Claim
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1. A system for monitoring stator core or conductor vibration during operation of electrical machinery, said system comprising:
- a plurality of sensors disposed along at least one stator bar of the stator core, said plurality of sensors monitoring vibration of the at least one stator bar during operation of the electrical machinery; and
a controller operatively coupled to said plurality of sensors for receiving uniquely identified signals from each one of said plurality of sensors, and for converting said uniquely identified signals into stator core or conductor vibration data correlated to the location of each of said plurality of sensors.
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Abstract
An apparatus and method for monitoring vibration of the stator core and/or the conductors of electrical machinery during its operation involves positioning vibration sensors at the stator bar ends and operatively coupling the vibration sensors to a central controller. The vibration sensors are axially disposed along the length of an optical fiber and form an interferometer with a reference reflector. The central controller receives a reflected signal from each sensor which represents a measure of the vibration occurring in the stator core and/or the conductors at the location of the sensor.
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Citations
16 Claims
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1. A system for monitoring stator core or conductor vibration during operation of electrical machinery, said system comprising:
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a plurality of sensors disposed along at least one stator bar of the stator core, said plurality of sensors monitoring vibration of the at least one stator bar during operation of the electrical machinery; and a controller operatively coupled to said plurality of sensors for receiving uniquely identified signals from each one of said plurality of sensors, and for converting said uniquely identified signals into stator core or conductor vibration data correlated to the location of each of said plurality of sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of monitoring stator core or conductor vibration during operation of electrical machinery, said method comprising:
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locating a plurality of sensors along at least one stator bar of the stator core, said plurality of sensors monitoring vibration of the at least one stator bar or associated conductors during operation of the electrical machinery; and receiving uniquely identified signals from each one of said plurality of sensors at a central controller, and converting said uniquely identified signals into stator core or conductor vibration data at said central controller which correlates said stator core or conductor vibration data to the location of each of said plurality of sensors. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification