How do the industrial and mining enterprises have a tie-line radial power supply system?

Figure 1-3 illustrates the power distribution and wiring configuration of a two-way industrial and mining enterprise using a contact line radial power supply system. This setup features a two-phase high-voltage incoming line with two independent power sources, along with a bus-segmented dual-circuit cross-powered distribution system. Such a configuration supports advanced automation of electrical devices, making it highly efficient for complex operations. However, this design requires a larger number of high-voltage switchgear units, leading to higher initial investment costs. Despite this, it is well-suited for applications involving primary loads where reliability and continuous operation are critical. The system ensures better fault isolation and load balancing, which enhances overall system stability and safety in demanding environments.