Research On Inprove The Accuracy Of The Power Transformeer Thermometer

In power system, power transformer is one of the most important equipment in the system, the reliability of the power transformer operation is directly related to power grid safe, efficient and economic operation, also is the important guarantee of grid building. At present, the vast majority of the transformer life the end of the reason is because lost its insulating ability, and one of the main factors influencing the insulating ability is moderate winding transformer run time of the oil temperature, temperature is one of the main winding. Transformer winding of transformer winding temperature is to achieve the temperature of the hottest area, is also related to the value of the main transformer load factor. So accurate measuring windings transformer oil in moderate temperature, to allow for transformer overload and the evaluation of the operational life has very important significance. This thesis mainly according to the faults and problems in the daily maintenance work, discuss how to improve the measurement accuracy of transformer thermometer, through to the transformer thermometer from structure to the work principle of careful discussion, combined with the current tangshan power supply company transformer oil temperature thermometer thermometer and winding operation and daily equipment maintenance and repair, discovery and find out the problems existing in the equipment, to find faults and problems, design a series of experiments, through these experiments to find the cause of the problem and reduce error and improve the precision thermometer. Through the actual equipment upgrade to solve the problems in the daily maintenance, creative thermometer probe improvement measures are put forward and explore the thermometer correct connection method of secondary line, reduce the daily operation of the transformer of the thermometer measurement error, reduce the failure rate, the correct break a contact switch, the transformer top oil circulating fan cooling system accurately and timely start-up and shutdown, and to ensure the stability of the power transformer, health operation provides important reference basis and reliable guarantee.