Applying Low-Residual-Voltage Surge Arresters to Suppress Overvoltages in UHV AC Systems

The ultra high voltage (UHV) refers to the voltage level of ± 800 kV and above DC and 1000 kV and above AC. The UHV power transmission technology can solve some of the problems that have plagued the energy industry for a long time. UHV power transmission technology has high efficiency and low unit transmission cost. It can be used in areas where energy and load are unbalanced to achieve large-scale long-distance power transmission. UHV systems are proven solutions to the problem of large-scale new energy consumption, and they promote the development of new energy, and provide opportunities for the reduction of global environmental pollution and carbon emissions.