Lianyungang power "electric doctor" charged detection security equipment

The ear is wearing a stethoscope and holding the handset. From time to time, the handset is placed in the corner of the ring switch cabinet, just as a doctor is asking patients... March 3-6, Lianyungang Power Company's “electric doctor” We are conducting a partial discharge test on a 10-kilovolt RMU that has been operating in the urban areas for more than five years to ensure the safe operation of the power grid during the two sessions.

In order to further strengthen the state management of distribution equipment, “electrophysicians” use ultrasonic and ground wave (TEV) detection technologies to conduct partial discharge electrification tests on 155 enclosed switchgears operating in urban areas for more than 5 years. “In the past, this type of detection method for electrification was used in the substation, and it was the first time that it was used in distribution equipment.” Fuquan, a three-shift operator of the distribution inspection, introduced while auscultating. “Using the switchboard ultrasonic ground potential With the PD instrument, we can effectively eliminate interference in the field and improve the accuracy of defect type identification by comparing and analyzing one or more PD signals.”

It is understood that there was no advanced detection method for the equipment inside the enclosed switchgear, and the potential partial discharge of the device would cause the insulation layer of the device to be damaged, which will not only cause power outage but also endanger the safety of personnel. Partial discharge detection can timely monitor the internal insulation status of the power equipment, and can discover potential failures of the power equipment in advance, thus taking targeted measures to prevent the occurrence or upgrade of the equipment accident. This kind of point detection method saves both manpower and material resources. It can also avoid the economic loss caused by longer repair time. In northern Jiangsu, Lianyungang Power Supply Company was the first to use this measure to manage the status of distribution equipment.

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