DJ1100 three-phase CVT online monitoring device was put into operation in Hangzhou Fuyang Power Supply Bureau

　　A total of 8 sets of Shunyang brand DJ1100 three-phase CVT online monitoring devices developed and produced by Ningbo Shunyang Electric Measuring Instrument Co., Ltd. have been installed and tested in the 110KV substations of Hangzhou Fuyang Power Supply Bureau, such as Lingqiao, Songxi, Baihe, and Linjiang. , The dead zone voltage of the 3Uo sampling value of the device is less than 1V, and the resolution of the three-phase unbalance measurement calculation reaches 0.02%. After many times 　　of verification and comparison, it meets the requirements and has been officially put into operation.
　　Shunyang brand DJ series three-phase (single-phase) capacitive voltage transformer (CVT) online monitoring device is based on the MCS-96 series single-chip 16-bit microcomputer as the core, for Ua, Ub, Uc, 3Uo (for single-phase Ua , UL) Collect, display, and alarm after the limit is exceeded after a delay. Due to the occurrence of partial capacitor damage or abnormal insulation of the CVT, the secondary side voltage will change accordingly, so the timely application of the CVT online monitoring device to monitor the secondary side voltage change and take measures is an important means to avoid CVT damage accidents.
　　News link: Ningbo Shunyang has successfully developed the Shunyang brand DJ series three-phase (single-phase) capacitive voltage transformer (CVT) online monitoring device in August 2006 and put it in the Hangzhou Electric Power Bureau and other power system substations Luck.

　　　　　　　　　　　　　　　　　　　　　　　　　　　　 (Reported by Zhong and Jinlong 2011.07.18)