CN-224204770-U - Three-phase current balance power distribution control system

CN224204770UCN 224204770 UCN224204770 UCN 224204770UCN-224204770-U

Abstract

The utility model relates to the technical field of power control, in particular to a three-phase current balance power distribution control system, which solves the problem that the random access of a single-phase load in a low-voltage power distribution system is easy to cause unbalanced three-phase current. A three-phase current balance distribution control system comprises an input power supply, a plurality of groups of single loads, a plurality of three-phase balance converters and a three-phase balance controller, wherein the input power supply is used for providing three-phase alternating current power supply, the single loads are connected in parallel and are electrically connected with the input power supply, the three-phase balance converters are used for transferring current from a heavy load phase to a light load phase, the three-phase balance converters are respectively positioned in circuits of the single loads, and the three-phase balance controller is used for monitoring and adjusting the balance of three-phase current in real time. According to the utility model, the three-phase circuit system is regulated and controlled in real time through the three-phase balance controller, so that the three-phase unbalance degree of the circuit system is reduced, the service life of the connecting equipment is prolonged, the electric energy loss is reduced, and the comprehensive energy efficiency of the system is improved by reducing the neutral line current and the line loss.

Inventors

YIN ZEMING
LI LIUCHUN

Assignees

东莞全达机电设备有限公司

Dates

Publication Date: 20260505
Application Date: 20250416

Claims (4)

1. A three-phase current balance distribution control system is characterized by comprising an input power supply, a plurality of groups of single loads, a plurality of three-phase balance converters and a three-phase balance controller, wherein the input power supply is used for providing three-phase alternating current power supply, the single loads are connected in parallel and are electrically connected with the input power supply, the three-phase balance converters are used for transferring current from heavy load phases to light load phases, the three-phase balance converters are respectively positioned in circuits of single loads, and the three-phase balance controller is used for monitoring and adjusting the balance of three-phase current in real time.
2. The three-phase current balance distribution control system according to claim 1, wherein the three-phase balance converter adopts a modularized IGBT bridge arm structure to form a power electronic module and supports multistage parallel expansion.
3. The three-phase current balance power distribution control system according to claim 1, wherein the three-phase balance controller is connected with an intelligent monitoring power meter, and the intelligent monitoring power meter is designed based on a microprocessor MPA, and is internally provided with a high-precision current sensor.
4. The three-phase current balance power distribution control system according to claim 1, wherein the input power source and the single load integrate a plurality of circuit breakers and isolating switches for controlling the safety on-off of the circuit system.

Description

Three-phase current balance power distribution control system Technical Field The utility model relates to the technical field of power control, in particular to a three-phase current balance power distribution control system. Background In a low-voltage distribution system, random access of a single-phase load easily causes unbalance of three-phase current, when the single-phase load is put into or cut off, the unbalance of the three-phase current can be caused, loss of a power system line can be increased, voltage fluctuation and flicker, metering errors and damage of power equipment can be caused, and economic loss is brought to a user. The traditional solution relies on manual adjustment of load or uses a static compensation device, but has the defects of lag response, low adjustment precision, incapability of dynamically adapting to load change and the like. A three-phase current balance distribution control system is provided for this purpose. Disclosure of utility model The utility model aims to solve the problems that the unbalanced solution of three-phase current depends on manual load adjustment or a static compensation device is used, but has the defects of lag response, low adjustment precision, incapability of dynamically adapting to load change and the like. The utility model adopts the following technical scheme for realizing the purposes: A three-phase current balance distribution control system comprises an input power supply, a plurality of groups of single loads, a plurality of three-phase balance converters and a three-phase balance controller, wherein the input power supply is used for providing three-phase alternating current power supply, the single loads are connected in parallel and are electrically connected with the input power supply, the three-phase balance converters are used for transferring current from heavy load phases to light load phases, the three-phase balance converters are respectively positioned in circuits of the single loads, and the three-phase balance controller is used for monitoring and adjusting the balance of three-phase current in real time. Furthermore, the three-phase balance converter adopts a modularized I GBT bridge arm structure to form a power electronic module and supports multistage parallel expansion. Furthermore, the three-phase balance controller is connected with an intelligent monitoring power meter, and the intelligent monitoring power meter is designed based on a Microprocessor (MPA) and is internally provided with a high-precision current sensor. Furthermore, the input power supply and the single load are integrated with a plurality of circuit breakers and isolating switches, and the circuit breakers and the isolating switches are used for controlling the safety on-off of the circuit system. The beneficial effects of the utility model are as follows: The three-phase circuit system is regulated and controlled in real time through the three-phase balance controller, the three-phase unbalance degree of the circuit system is reduced, the service life of the connecting equipment is prolonged, the electric energy loss is reduced, the comprehensive energy efficiency of the system is improved through reducing the neutral line current and the line loss, and the three-phase circuit system is suitable for industrial, commercial and residential power distribution scenes and has high economy and reliability. Drawings FIG. 1 is a schematic diagram of a circuit connection structure of the present utility model; The power meter comprises a reference numeral 1, an input power supply, a single load 2, a three-phase balance converter 3, a three-phase balance controller 4, an intelligent monitoring power meter 5, a circuit breaker 6, a circuit breaker 7 and a disconnecting switch. Detailed Description For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. It should be not