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JDY partial discharge monitor

key word:Heat exchange element


Product description

1. Product application

In the major accidents of generator, the partial discharge caused by stator insulation hidden danger is one of the causes. It starts from generator insulation aging and discharge; The inner strand of stator coil is broken; The wedge in the slot is loose; The coil is polluted by oil and creepage occurs; Insulation discharge caused by coil leakage and water leakage of water cooling unit. In a word, fault discharge is a kind of performance of electrical insulation deterioration during the operation of electrical equipment, and it is a necessary process to develop into insulation breakdown short circuit accident. Preventive test can not fully ensure the safe operation of generator insulation in one inspection cycle, especially can not grasp the state change of generator insulation discharge in operation. Therefore, it is necessary to find an on-line monitoring instrument for insulation discharge, which can monitor the normal discharge value and abnormal discharge value of generator stator insulation at any time. According to the nature of discharge, the size and frequency of discharge and the change trend, it can judge whether there is insulation deterioration or even insulation damage in the early stage, and provide effective data for troubleshooting and periodic maintenance.

 

2. Product introduction

 JDY generator partial discharge monitor is a new type of generator insulation discharge on-line monitoring instrument based on insulation discharge test theory. It is mainly based on the partial discharge and the characteristics of partial discharge in the process of fault formation of generator insulation, and carries out quantitative measurement and qualitative analysis. At the same time, the oscilloscope displays the discharge phase and waveform, so as to facilitate comprehensive judgment and take measures. PC (picocoulomb) is used as the measurement value of the instrument, which has the advanced technology of digitization and intelligence. The data is transmitted with the computer through the serial interface. By running the monitoring software developed by our company, the collected data can be displayed on the computer screen in real time, and the discharge waveform can be observed.