The function of Teflon FEP hose in transfer valve

The trigger mode of thyristor is divided into electric trigger and optical trigger. Abb and Siemens are representatives respectively. Converter valve is the core equipment of DC transmission project. By connecting the three-phase AC voltage to the DC terminal in turn, the desired DC voltage can be obtained and the power can be controlled. Its value accounts for 22-25% of the total price of complete equipment in converter station. The power electronic technology, optical control conversion technology, high-voltage technology, control technology and voltage sharing technology, cooling technology and high-voltage insulation materials and other technologies and research results are applied to the design of converter valve. The main technical difficulties lie in the establishment of transient simulation model of converter valve, high potential overall shielding and shielding performance of converter valve. Research; insulation coordination of converter valve, control and suppression technology of partial discharge level; development of key components of converter valve; integration of cooling, photoelectric conversion technology, converter valve control and voltage equalizing technology; converter valve type test method

Converter valve is the core equipment of DC transmission project. By connecting the three-phase AC voltage to the DC terminal in turn, the desired DC voltage can be obtained and the power can be controlled. Its value accounts for 22-25% of the total price of complete equipment in converter station.