Main switch shift adjustment controller of 400-V power distribution system and adjustment control method thereof

Abstract

The invention relates to a main switch shift adjustment controller of a 400-V power distribution system and an adjustment control method thereof. The invention relates to main switch shift adjustment control of a 400-V power distribution system, especially to a dedicated device for solving problems of main switch over-load current fixed value setting and control problems on the condition of large load changing and an adjustment control method thereof. The controller comprises a current setting unit, a current acquisition unit, an alarm display unit, a switching control unit, and a central processing unit; and the central processing unit is connected with the current setting unit, the current acquisition unit, the alarm display unit, and the switching control unit. Under the circumstance that power of the system is not interrupted, primary current fixed-value setting of the main switch is carried out; and according to a relationship between a practically measured primary current and upper and lower limit thresholds, the switching control unit controls switching of the switch, so that a problem of setting of the main switch over-load current fixed value on the condition of large load change can be solved.

Description

technical field [0001] The present invention relates to a 400V power distribution system main switch gear adjustment controller and its adjustment control method, which relate to the 400V power distribution system main switch gear adjustment control, and in particular to solving the problem of setting and controlling the overload current setting and control of the main switch when the load changes greatly. Special equipment and regulation control method. Background technique [0002] At present, there are a large number of 400V power distribution switches in many residential or rural power distribution systems, and the load will change greatly due to seasonal or festival effects. When the load is heavy, the switching capacity is insufficient. When the seasonal or festive load is over, due to the load reduction, the switch load configuration will be greater than the actual load. The current solution is mainly to configure the switch according to the maximum upper limit of th...

AI Technical Summary

Problems solved by technology

[0002] At present, there are a large number of 400V power distribution switches in many residential or rural power distribution systems, and the load will change greatly due to seasonal or festival effects. When the load is heavy, the switching capacity is insufficient. When the seasonal or festive load is over, due to the load reduction, the switch load configuration will be greater than the actual load.

The current solution is mainly to configure the switch according to the maximum upper limit of the load, but it will bring difficulties to the fixed value coordination of the upper and lower switches, and the embarrassing situation of large horse-drawn carts will appear.

Further, if it is necessary to adjust the primary current setting value of the switch, it is necessary to cut off the switch, causing the load to be cut off

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