Tunnel fan power supply scheme
All large equipment is used by electricity, any fan is also so, but special types of fans such as high-temperature fans, tunnel jet fans, etc., mine fans and other fan power supply is designed, according to the power of the fan, power supply distance and other conditions to determine the power supply scheme, because the power of the tunnel jet fan is relatively large, therefore, to use multiple tunnel fans at the same time, today we come to introduce the tunnel jet fan power supply scheme is what?
Set up an interval electronic control room, and the port electronic control room will supply power to the tunnel fan and manage it uniformly. If the tunnel fan installed in the section is 0.08 km away from Z near the port electrical control room≤L.
The loss of supply voltage meets fan start-up requirements. For example, when the distance between the tunnel fan in the section is 0.15km ≤L<0.3km, an electrical control room should be installed in the section, and the two-way 0.23/0.4kV power supply should be installed, and the two 0.23/0.4kV power supply sections are fed by the two 0.23/0.4kV power supply sections of the port substation near Z.
What is the power supply scheme of the tunnel jet fan? The tunnel jet fan installed in the harbor is generally less than 0.06km away from the port electronic control room, so the power supply is provided by the port environmental control room.
The second 35kV power supply is fed from the port substation located near Z, and the energy transformer powered by the interval substation is supplied to the tunnel fan and other related loads after the voltage reduction. If the distance between the tunnel fan being set up and the Z near port substation is 0.3km, the Jinji section substation (also an electronic control room) should be installed next to the tunnel fan in the section. When using 0.38kV indirectly for long-distance high-power fan power supply, the voltage loss is large, generally higher than 5kV, and the fan is difficult to start, so it is necessary to install an interval substation.
In general, the power supply scheme of the tunnel jet fan is basically the same as the above four schemes, and the tunnel jet fan is powered by the electric control room, so as long as you choose the power supply scheme that suits you, you can control it centrally, so as long as you choose the above scheme to use it.