CN2865108Y

CN2865108Y - Low-voltage powerless automatic compensating unit based on draw-off type case structure

Info

Publication number: CN2865108Y
Application number: CNU2005200752527U
Authority: CN
Inventors: 施博一
Original assignee: NANTONG XIANDAI ELECTRIC POWER TECHNOLOGY Co Ltd
Current assignee: JIANGSU MODERN POWER CAPACITOR CO., LTD.
Priority date: 2005-09-02
Filing date: 2005-09-02
Publication date: 2007-01-31
Anticipated expiration: 2015-09-02

Abstract

The utility model discloses a draw-out type box structure based low voltage automatic reactive compensator, comprising a draw-out type box. It is characterized in that: the draw-out type box is arranged with primary plug-ins and secondary plug-ins; the primary plug-in box is externally connected with a power supply busbar, and the secondary plug-in box is externally connected with the secondary stage of a distributing current transformer; the primary and secondary plug-in boxes are internally connected with an automatic reactive compensation component, respectively. The utility model has the advantages of innovative structure, rich functionality, easy operation, and reliable quality, and a variety of low voltage automatic reactive power compensation devices can be assembled in the draw-out type box in a building block manner. Therefore, the utility model is compact in structure, and is easy to design, fabricate, operate and service, with capacity highly adjustable.

Description

Low-voltage reactive power automatic compensation cell arrangement based on the pull-out type box structure

Technical field:

The utility model relates to low-voltage reactive power (or omiting under the power factor) autocompensation installation in the electricity supply and use technology field, specifically, is a kind of low-voltage reactive power automatic compensation cell arrangement based on the pull-out type box structure.

Background technology:

In recent years, the structure of low-voltage complete cabinet adopts pull-out type (case) cabinet form more and more, this form can make the electric unit of purposes such as being subjected to electricity, feed, contact all can assemble in the pull-out type case, insert in the drawing-out type cabinet cordwood system type then and constitute power supply-distribution system, have compact conformation, easy to maintenance, advantage such as the capacity adjustability is good.But its imaginary power automatic compensation part still adopts the traditional structure form, promptly in whole cabinet numerous components and parts such as controller, switch, contactor, fuse, thermal relay and capacitor is assembled.This apparatus structure is numerous and diverse, the property tieed up is poor, the capacity adjustability is poor, and simultaneously controller is the bottleneck of whole aircraft reliability, in case fault then whole failure of apparatus.

Summary of the invention:

The purpose of this utility model provide a kind of novel structure, multiple functional, use flexibly, reliable in quality, can in drawing-out type cabinet, form various low-voltage reactive power automatic compensation devices by cordwood system type, make its compact conformation, be convenient to design, production and operation maintenance, and the good low-voltage reactive power automatic compensation cell arrangement based on the pull-out type box structure of capacity adjustability.

Technical solution of the present utility model is: a kind of low-voltage reactive power automatic compensation cell arrangement based on the pull-out type box structure, the pull-out type casing is arranged, it is characterized in that: be furnished with connector and secondary connector on the pull-out type casing, a connector case external power supply bus, the external distribution current transformer of secondary connector case is secondary, once, connect the imaginary power automatic compensation assembly in the secondary connector case.

The imaginary power automatic compensation assembly has reactive power or power-factor measurement, controls low voltage power capacitor switching, kinds of protect, the online networking of communication and man-machine interface module automatically in the case described in the utility model.The little carrier wave of low pressure or bluetooth or communication bus mode are adopted in the online networking of communicating by letter, and communication bus is drawn by the secondary connector when adopting the communication bus mode.The man-machine interface module is installed on the front panel of pull-out type case.The reactive power compensation assembly is one or two intellectual low voltage power capacitors in the case, and every contains 2 20kVar low voltage power capacitors.All terminal parallel connections of two intellectual low voltage power capacitors of reactive power compensation assembly, online behind the introducing distribution electric current by the RS-485 bus, form low-voltage reactive power automatic compensation device with 4 20kVar low voltage power capacitors.Many stylobates are all in parallel in drawing-out type cabinet by connector in the primary power source wiring of each cell arrangement of the low-voltage reactive power automatic compensation cell arrangement of pull-out type box structure and secondary current instrument transformer, communication bus wiring, each unit promptly by the communication bus networking, constitutes a total low-voltage reactive power automatic compensation device.

The beneficial effects of the utility model are: novel structure, multiple functional, use flexibly, reliable in quality, can in drawing-out type cabinet, form various low-voltage reactive power automatic compensation devices by cordwood system type, make its compact conformation, be convenient to design, production and operation maintenance, and the capacity adjustability is good.

Below in conjunction with drawings and Examples the utility model is further described:

Description of drawings:

Fig. 1 is the circuit diagram of a kind of low-voltage reactive power automatic compensation cell arrangement based on the pull-out type box structure of the present utility model;

The serve as reasons circuit diagram based on the low-voltage reactive power automatic compensation cell arrangement of the pull-out type box structure low-voltage reactive power automatic compensation device that cordwood system type is formed in drawing-out type cabinet of many playscripts with stage directions utility model of Fig. 2.

Embodiment:

Fig. 1, Fig. 2 have described an embodiment of the present utility model jointly, and frame of broken lines is represented the pull-out type case in Fig. 1, and XS1 is a connector, and XS2 is the secondary connector.The socket of XS1, XS2 or plug are contained on the pull-out type case, join with imaginary power automatic compensation assembly in the case, the plug of XS1 or socket join with power source bus in the drawing-out type cabinet outside case, the plug of XS2 or socket outside case in the drawing-out type cabinet with B secondary joining of distribution current transformer (TA) mutually.

The reactive power compensation assembly is made up of A1, A2 in the case; A1 and A2 are that two models are the intellectual low voltage power capacitor of TDS-13SZ/420-2020; every contains 2 20kVar low voltage power capacitors, has reactive power (power factor) and measures, controls automatically functions such as low voltage power capacitor switching, kinds of protect, man-machine interface and the online networking of communicating by letter.1,2,3 terminals of A1, A2 are the power supply leading-in end, and 6,7 terminals are distribution current sample end, and 4,5 ends are A, the B end of RS-485 communication bus, 8,9 end signal inputs.QF is a miniature circuit breaker, has switch and electric current speed to cut the usefulness of protection, is contained on the front panel of pull-out type case.SA is the plug latch switch of pull-out type case, closure when the plug case, thus make all low voltage power capacitors of A1, A2 move back fortune, electric arc appears when preventing to plug case.All terminal parallel connections of A1, A2, when QF closes, after XS1 connected three phase mains, XS2 introducing distribution electric current, A1, A2 were online by the RS-485 bus, formed the low-voltage reactive power automatic compensation cell arrangement work with 4 20kVar (80kVar altogether) low voltage power capacitor automatically.At a stylobate when the capacity of the low-voltage reactive power automatic compensation cell arrangement of pull-out type box structure is not enough, available many, as shown in Figure 2.The primary connection of each cell arrangement and secondary current instrument transformer, communication bus wiring are all in parallel in drawing-out type cabinet by connector, each cell arrangement is promptly by the communication bus networking, and cordwood system type constitutes a total low-voltage reactive power automatic compensation device and works harmoniously.

Claims

1, a kind of low-voltage reactive power automatic compensation cell arrangement based on the pull-out type box structure, the pull-out type casing is arranged, it is characterized in that: be furnished with connector and secondary connector on the pull-out type casing, a connector case external power supply bus, the external distribution current transformer of secondary connector case is secondary, once, connect the imaginary power automatic compensation assembly in the secondary connector case.

2, the low-voltage reactive power automatic compensation cell arrangement based on the pull-out type box structure according to claim 1 is characterized in that: the imaginary power automatic compensation assembly has reactive power or power-factor measurement, controls low voltage power capacitor switching, kinds of protect, the online networking of communication and man-machine interface module automatically in the case.

3, the low-voltage reactive power automatic compensation cell arrangement based on the pull-out type box structure according to claim 2, it is characterized in that: the little carrier wave of low pressure or bluetooth or communication bus mode are adopted in the online networking of communicating by letter, and communication bus is drawn by the secondary connector when adopting the communication bus mode.

4, the low-voltage reactive power automatic compensation cell arrangement based on the pull-out type box structure according to claim 2, it is characterized in that: the man-machine interface module is installed on the front panel of pull-out type case.

5, the low-voltage reactive power automatic compensation cell arrangement based on the pull-out type box structure according to claim 1 is characterized in that: the reactive power compensation assembly is one or two intellectual low voltage power capacitors in the case, and every contains 2 20kVar low voltage power capacitors.

6, the low-voltage reactive power automatic compensation cell arrangement based on the pull-out type box structure according to claim 5, it is characterized in that: all terminal parallel connections of two intellectual low voltage power capacitors of reactive power compensation assembly, after introducing the distribution electric current, online by the RS-485 bus, form low-voltage reactive power automatic compensation device with 4 20kVar low voltage power capacitors.

7, according to claim 1,2,3,4,5 or 6 described low-voltage reactive power automatic compensation cell arrangements based on the pull-out type box structure, it is characterized in that: many stylobates are all in parallel in drawing-out type cabinet by connector in the primary power source wiring of each cell arrangement of the low-voltage reactive power automatic compensation cell arrangement of pull-out type box structure and secondary current instrument transformer, communication bus wiring, each unit promptly by the communication bus networking, constitutes a total low-voltage reactive power automatic compensation device.