Schematic diagram of working principle of DHX circulating fluidized bed distillation boiler

1. What Is a Three-Phase Power Surge Protective Device (SPD)?A three-phase power surge protective device (SPD), also known as a three-phase lightning arrester, is specifically designed for three-phase AC power systems. Its primary function is to limit transient overvoltages caused by lightning strikes or switching operations in the power grid, thereby protecting downstream electrical equipment from damage. The SPD operates based on energy absorption and dissipation: when an overvoltage event occ

The Daquan Line has a large power load, with numerous and scattered load points along the section. Each load point has a small capacity, with an average of one load point every 2-3 km, so two 10 kV power through lines should be adopted for power supply. High-speed railways use two lines for power supply: primary through line and comprehensive through line. The power sources of the two through lines are taken from the dedicated bus sections fed by the voltage regulators installed in each power di

In power grid construction, we should focus on actual conditions and establish a grid layout suitable for our own needs. We need to minimize power loss in the grid, save social resource investment, and comprehensively improve China's economic benefits. Relevant power supply and electricity departments should also set work goals centered on effectively reducing power loss, respond to energy conservation calls, and build green social and economic benefits for China.1.Current Status of China's Powe

Railway power systems primarily consist of automatic block signaling lines, through-feeder power lines, railway substations and distribution stations, and incoming power supply lines. They provide electricity to critical railway operations—including signaling, communications, rolling stock systems, station passenger handling, and maintenance facilities. As an integral part of the national power grid, railway power systems exhibit distinct characteristics of both electrical power engineering and