Title :
Investigation into the Characteristics ofMOV at Liquid Nitrogen Temperature in Low Current Region
Author :
Wei, Bin ; Wen, Yuanfang ; Tang, Yuejin ; Li, Jingdong ; Zhou, Yusheng
Author_Institution :
Supercond. Electr. Power Sci. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan
Abstract :
MOV has been widely utilized in the power industry due to its high degree of nonlinearity and excellent capability to carry heavy electrical current. And the superconducting technology is a new development in the area of the electrical power supply, but one of difficulties for high temperature superconducting industry coming into our life is over-voltage protection, therefore, it is necessary to study characteristics of MOV at liquid nitrogen temperature for supplying in superconducting industry. An experiment about MOV has been done, and some data are gotten. Based on the MSV and VCC, this paper analyzes these data, and gets the leakage current wave, resistance current wave and capacitive current wave under different voltages. Also characteristics of MOV in low current region at liquid nitrogen temperature and in normal temperature are analyzed correspondingly. The conclusion is that the basic characteristics of MOV at liquid nitrogen temperature are better than normal temperature in low current region
Keywords :
MIS devices; electricity supply industry; high-temperature superconductors; leakage currents; overvoltage protection; varistors; MOV characteristics; MSV; VCC; capacitive current wave; electrical power supply; high temperature superconducting industry; leakage current wave; liquid nitrogen temperature; low current region; nonlinearity; over-voltage protection; power industry; resistance current wave; superconducting technology; Electrical equipment industry; Electricity supply industry; Equivalent circuits; High temperature superconductors; Leakage current; Nitrogen; Power industry; Protection; Superconductivity; Voltage; Capacitive current; Leakage current; Liquid nitrogen temperature; Low current region; MOA; MOV; MSV; Resistive current; VCC; ZnO;
Conference_Titel :
Transmission and Distribution Conference and Exhibition: Asia and Pacific, 2005 IEEE/PES
Conference_Location :
Dalian
Print_ISBN :
0-7803-9114-4
DOI :
10.1109/TDC.2005.1546855
