CN2671201Y

CN2671201Y - Intelligent composite switch with reactive compensation

Info

Publication number: CN2671201Y
Application number: CN 200320110716
Authority: CN
Inventors: 殷晨钟; 关金林
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-11-10
Filing date: 2003-11-10
Publication date: 2005-01-12
Anticipated expiration: 2013-11-10

Abstract

The utility model belongs to a device with the reactive compensation, in particular to a switch used in the device witch the reactive compensation. According to the design offered by the utility model, a bottom board is provided with a microcomputer controller and many groups of bus bars. Each group of bus bars is composed of two opposite bus bars. An electromagnetic relay is provided between the two opposite bus bars. A solid relay is arranged on the bottom board under the electromagnetic relay. The microcomputer controller, the electromagnetic relay and the solid relay are respectively and mutually connected by conducting wires. The intelligent composite switch with the reactive compensation can effectively avoid the respective problems of the short service life of an alternating current contactor and the large voltage drop of the solid relay. The advantages of the two devices are exerted adequately.

Description

The reactive power compensation intelligent compound switch

Technical field

The utility model belongs to a kind of reactive power compensator, refers in particular to a kind of switch that is used for reactive power compensator.

Background technology

In the prior art, reactive power compensator utilizes A.C. contactor to make the switching device usually, and its advantage is that contact resistance is little, can reach zero pressure drop in theory, its shortcoming is in switching process, especially can produce spark discharge when high-voltage great-current, burn out the contact easily, thereby the life-span is shorter; Therefore, sometimes the user utilizes the SSR solid-state relay to replace A.C. contactor, overcome the spark discharge phenomenon, still, because there is certain voltage drop in solid-state relay, there is power loss in itself, thereby when high-power applications, heating is serious, need bigger radiator is set, make volume and weight become big.

Summary of the invention

The purpose of this utility model is to design a kind of reactive power compensation intelligent compound switch, utilize this switch can effectively avoid A.C. contactor and solid-state relay separately problem the problem includes: useful life short with problems such as voltage drop is big, give full play to the strong point of two kinds of devices.

According to design provided by the utility model, microcomputerized controller and many group busbars are installed on base plate, every group of busbar is made up of two relative busbars, between per two relative busbars, electromagnetic relay is set, on the base plate below the electromagnetic relay solid-state relay is set, microcomputerized controller, electromagnetic relay and solid-state relay utilize lead to interconnect respectively.

Utilize the tandem bar to interconnect between electromagnetic relay and corresponding busbar.The tandem bar is L-shaped, and two lattice framings that constitute the tandem bar are connected with busbar with electromagnetic relay respectively.The upper end of busbar is approximate to the inside to be bent into the right angle, in the part perforate of bending.

Because this device is combined solid-state relay and electromagnetic relay, utilize microcomputerized controller to control both switch and closing course again, when conducting, solid-state relay work is not because solid-state relay can generate heat, thereby avoided the problem of heating, after conducting time-delay a period of time, make electromagnetic relay work, the electromagnetic relay conducting is cut off solid-state relay after time-delay a period of time, utilize the electromagnetic relay contact resistance little, almost do not have the advantage of pressure drop, for load provides power supply.Therefore both overcome the problem of electromagnetic relay, avoided problems such as solid-state relay existing voltage drop when work is big, meeting heating again at the moment of closure generation electric spark.

Description of drawings

Fig. 1 is a structure chart of the present utility model.

Fig. 2 is a winding diagram.

Embodiment

As shown in the figure: microcomputerized controller 2 and many group busbars 5 are installed on base plate 7, every group of busbar 5 is made up of two relative busbars, between per two relative busbars 5, electromagnetic relay 4 is set, solid-state relay 6 is set on the base plate below the electromagnetic relay 47, and microcomputerized controller 2, electromagnetic relay 4 and solid-state relay 6 utilize lead to interconnect respectively.

Electromagnetic relay 4 utilizes tandem bar 3 to interconnect with corresponding 5 of busbars, and tandem bar 3 is L-shaped, and two lattice framings that constitute tandem bar 3 are connected with busbar 5 with electromagnetic relay 4 respectively, to improve its contact performance.The upper end of busbar 5 is approximate to the inside to be bent into the right angle, in the part perforate of bending, so that shell is installed.

When switch conduction, the conducting of solid-state relay SSR elder generation, SSR can allow to bear 5～8 times rated current in the time of 10 microseconds, thereby SSR does not generate heat in this moment.After time-delay a period of time, electromagnetic relay MSR conducting, microcomputerized controller is after confirming that MSR connects, SSR time-delay a period of time disconnects again.

When combination switch disconnected, microcomputerized controller sent instruction, first conducting SSR, and after time-delay a period of time, MSR discharges disconnection, and after a period of time of delaying time again, SSR disconnects again, has prevented that MSR from drawing spark.

More than length of these time-delay processes all be at the millisecond order of magnitude, therefore, the make and break process of operation-control switch does not recognize and.

This device can use separately, and can only control several combination switches with same control signal night.Described microcomputerized controller is a kind of commonly used, Programmable Logic Controller that can outsourcing.

Microcomputerized controller is connected with electromagnetic relay MSR with solid-state relay SSR respectively among Fig. 2, and its make and break process is controlled by microcomputerized controller.

Claims

1, reactive power compensation intelligent compound switch, it is characterized in that: go up at base plate (7) microcomputerized controller (2) and many group busbars (5) are installed, every group of busbar (5) is made up of two relative busbars, electromagnetic relay (4) is set between per two relative busbars (5), on the base plate (7) of electromagnetic relay (4) below solid-state relay (6) is set, microcomputerized controller (2), electromagnetic relay (4) and solid-state relay (6) utilize lead to interconnect respectively.

2, combination switch according to claim 1 is characterized in that: utilize tandem bar (3) to interconnect between electromagnetic relay (4) and corresponding busbar (5).

3, combination switch according to claim 1 is characterized in that: tandem bar (3) is L-shaped, and two lattice framings that constitute tandem bar (3) are connected with busbar (5) with electromagnetic relay (4) respectively.

4, combination switch according to claim 1 is characterized in that: the upper end of busbar (5) is approximate to the inside to be bent into the right angle, in the part perforate of bending.