Transformer Bushing Online Monitoring Method Based on the Method of Relative Angle Difference
Qiang Gao, Feng Yuan, Zhan Nan Guo, Qi Liu, Dan Tian Zhong, Mao Jun Wang, Ping Li, Bin Cai, Zai Lin Li, Ting Yuan, Jing Zhang · Applied Mechanics and Materials · 2014
Transformer is the main equipment of power system, its operation reliability is directly related to power system security and reliability of power supply. In order to guarantee the safe operation of power system, must strengthen the monitoring of the main transformer.With the development and popularization of intelligent station, the detection of transformers insulation is faced with the new problem that PT signal is not convenient to get and even unable to get. This paper proposes the relative method which is used to calculate and monitor dielectric loss of transformer bushing and designs the on-line monitoring device, through the data acquiring form the on-line monitoring instrument which are installed in the transformer of substation shows that this method has high precision, strong anti-interference ability.