Energy-saving device based on low-voltage line load balance

Abstract

The invention discloses an energy-saving device based on low-voltage line load balance. The energy-saving device comprises a low-voltage master control switch, wherein the first end of the low-voltage master control switch is connected with the secondary side of a transformer, a primary side of the transformer is used for being connected with the power grid power supply end, the second end of the low-voltage master control switch is connected into a low-voltage bus, a multiple balance power distribution lines are further connected onto the low-voltage bus and are series circuits formed by sequentially connecting a wire outlet switch and N sectioned switches, the wire outlet switch is connected into the low-voltage bus, and the tail ends between every two balance power distribution lines are connected through an interconnection switch and form a low-voltage loop. The low-voltage master control switch and the wire outlet switch on each low-voltage master control switch are connected with a load balance controller through an independent communication channel, and the N sectioned switches on each balance power distribution line are connected with the load balance controller through an independent communication channel. The line heavy load or overload problem caused by unbalanced line load is solved, and the whole line outage caused by faults or overhauling is avoided.

Description

technical field [0001] The invention relates to the technical field of low-voltage balanced power distribution in power systems, in particular to an energy-saving device and a control method based on low-voltage line load balancing suitable for 380V and 220V low-voltage lines. Background technique [0002] The current low-voltage power distribution lines mostly adopt the radial mode, and there is no channel for load transfer. In the actual distribution network lines, there are peaks and valleys of power consumption and diurnal peaks and valleys of power consumption, resulting in uneven loads on the lines at different time periods. At the same time, there will also be uneven loads between lines. Balance phenomenon, some lines are heavily loaded or overloaded, and some lines are lightly loaded. Summarize the main problems existing in the current low-voltage distribution lines are: [0003] (1) For heavy-duty or overloaded lines, due to the increase of line temperature and th...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an energy-saving device based on low-voltage line load balance, which can reasonably transfer and allocate power according to the load between lines, solve the problem of line overload or overload caused by unbalanced line load, and avoid problems caused by failure or maintenance. Cause a power outage of the entire line, reduce the power outage area, improve the reliability of low-voltage power supply, and ensure the safe operation of low-voltage power distribution system

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