System and method for monitoring and controlling a transformer
AssigneeVirginia Transformer Corporation
InventorPrabhat JAIN
Life of this patent
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Abstract
A system, a method and a computer program to monitor a plurality of transformer operating parameters, as well as to accurately control one or more of the transformer operating parameters. Calculate loss of life and give diagnosis for recovery and provide maintenance notification, monitor the operation of the LTC.
Claims17
A system for monitoring operating parameters of a transformer, the system comprising:
- a temperature sensor that measures temperature in the transformer and outputs a temperature signal;
- a fluid level sensor that measures a level of fluid in the transformer and outputs a fluid level signal;
- a pressure sensor that measures pressure in the transformer and outputs a pressure signal;
- and
- a processor that receives the temperature signal, the fluid level signal, and the pressure signal, wherein the processor is configured to generate a diagnosis signal based on at least one of the temperature signal, fluid level signal, and pressure signal.
A method for monitoring or controlling a transformer comprising the steps of:
- sending at least one threshold value to a transformer monitoring device;
- receiving at least one signal from the transformer monitoring device indicative of a condition of a transformer that exceeded the at least one threshold value;
- and
- raising an alarm indicating a potential fault at the transformer.
A computer program embodied on a computer readable storage medium, the computer program comprising executable code that when read and executed by a processor performs the following steps:
- receiving a temperature signal from a transformer monitoring device indicative of a temperature of a transformer;
- receiving a fluid level signal from the transformer monitoring device indicative of a fluid level in the transformer;
- receiving a pressure level signal from the transformer monitoring device indicative of an amount of pressure in the transformer;
- receiving a current signal from the transformer monitoring device a current transmitter that measures the current in the transformer and outputs a current signal;
- receiving an ambient temperature signal from the transformer monitoring device indicative of ambient temperature of the transformer;
- receiving a gas signal from the transformer monitoring device indicating a level of gases generated in the transformer;
- receiving a LTC position signal from the transformer monitoring device indicative of a position of the LTC position;
- monitoring a rate of change in the temperature signal, a rate of change in the fluid level signal and a rate of change in the pressure level and outputting a signal based on a threshold being exceeded between any of these rate of change signals for determining a fault;
- calculating a percent loss of life of the transformer based on at least one of the signals exceeding a parameter;
- and
- raising an alarm based on at least one of:
- any of the signals and calculated percent loss of life of the transformer.
Dependencies are inferred from the claim text.