Software Design Of Online Dielectric Loss Factor Measurement System Based On GPRS

High voltage capacitive-type equipments account for a sizeable proportion in power systems, especially in transformer substations, and its dielectric loss factor (tanδ) is one of the important parameter reflecting the insulation condition. This thesis thoroughly studied the techonology of online dielectric loss factor measurement, pointed out the shortcomings of conventional methods, and analyzed the reason for reducing the measurement errors by relative comparison method. Methods of the dielectric loss factor measurement and error processing were proposed. The horizontal and vertical comparing approaches were presented. The insulation of capacitive-type equipments was determined by synthesis comparison.The design of online dielectric loss factor measurement system bases on GPRS was presented. A method using GPRS to implement romote control and communication, and using GPS to implement a synchronous acquisition system in different places was presented in order to achieving relative comparison method. The thesis designed the details of system software. The whole system is running stable, and the result of tanδmeasurement is accurate. The system has propagable value.