Intelligent boundary switch for distribution network

Distribution Network Intelligent Boundary Switch (Distribution Network Watchdog) Overview
With the rapid development of the power grid, the requirements for the reliability of safe power supply are getting higher and higher. Effective management measures should be taken by the power production department to target the weak links in the power grid operation. , do everything possible to reduce accidental power outages and narrow the scope of power outages. Because feeder overhead lines are erected in the open air, their safe operation is directly affected by the surrounding environment and climate conditions. There are problems such as high accident rate, difficulty in finding accidents, and poor safety and reliability. Some users in remote mountainous areas with long overhead lines are often affected by harsh weather and cannot use electricity normally.
The application of distribution network intelligent demarcation switches on feeder overhead lines can greatly reduce the associated accidental power outages of fault-free lines, narrow the scope of faulty power outages, shorten the user's power outage time, thereby improving the user's power supply reliability. At the same time, it better solves the requirement of quickly locating and finding the fault point when a phase-to-phase short circuit occurs in the outgoing line of the substation and a single-phase ground fault occurs.
Functional features
Automatic removal of single-phase ground fault
When a single-phase ground fault occurs in a user branch line, the demarcation switch will automatically open and get rid of the faulty branch line to ensure the safety of other branch users in the substation and feeder line. safe operation.
Automatic isolation of phase-to-phase short-circuit fault
When a phase-to-phase short-circuit fault occurs in a user's branch line, the demarcation load switch immediately opens to throw off the faulty line after tripping the outgoing line protection of the substation. After the outgoing switch of the substation is reclosed, the faulty line is isolated, allowing other branch users on the feeder to quickly resume power supply.
3 Quickly locate the fault point
After the user's branch line failure causes the demarcation switch to operate, only the user is responsible for the power outage, and the fault information can be proactively reported, so that the power company can quickly identify the accident point and conduct on-site processing in a timely manner to eliminate the fault. Power lines will be restored as soon as possible.
Monitoring user loads
The demarcation load switch can transmit the detection data to the power management center to realize real-time monitoring of remote loads.