All large-scale equipment depends on electricity for operation, and so does any fan. However, the power supply of special fans such as high-temperature fans, tunnel fans, mining fans, etc. should be designed, and the power supply scheme should be determined according to the conditions such as fan power, power supply distance, etc, Today, let's learn about the power supply scheme of tunnel fan?
① The section electric control room shall be installed, and the port electric control room shall supply power to the fan for consistent control and management. If the interval between the fan set in the section and the nearest port electric control room is 0.08km ≤ L
② The loss of power supply voltage can satisfy the starting request of the fan. If the interval between the fan set in the section and the nearest port substation is 0.15km ≤ l < 0.5km 3km, the electric control room shall be installed in the section, and two circuits of 0.23/0.00 shall be fed from the nearest port substation The 4KV power supply is distributed to the dual power switching cabinet in the section electric control room, and then the fan and other related loads are supplied.
③ What is the power supply scheme for tunnel fan? The distance between the fan set in the port and the port electric control room is normally less than 0 06km, so it is powered by the port environmental control electric control room.
④ Two 35kV Power supplies are fed from the nearest port substation to supply the energy transformer of the section substation, and supply relevant loads such as fans after step-down. If the interval between the tunnel fan set in the section and the nearest port substation = 0.3km, Jinji independent section substation (also electric control room) shall be installed next to the fan in the section. Adopt 0 The voltage loss of 38kV indirect power supply for remote high-power fans is large, which is normally above 5. It is difficult to start the fans, so it is necessary to install section substation.
Generally speaking, most of the power supply schemes of tunnel fan are similar to the above four schemes, and the fan is powered through the electric control room and can be controlled centrally. Therefore, it is only necessary to select the one suitable for yourself in the above scheme.
