CN202384768U

CN202384768U - Urban substation parallel capacitor device

Info

Publication number: CN202384768U
Application number: CN 201120520662
Authority: CN
Inventors: 顾尔重; 耿建风; 徐荥; 郭献军
Original assignee: Hennan Electric Power Survey and Design Institute
Current assignee: Hennan Electric Power Survey and Design Institute
Priority date: 2011-12-14
Filing date: 2011-12-14
Publication date: 2012-08-15
Anticipated expiration: 2021-12-14

Abstract

An urban substation parallel capacitor device comprises a fence and disconnecting switches located in the fence, the disconnecting switches are connected with series reactors and a capacitor group, wherein the series reactors adopt magnetic shielding reactors. By adopting the technical scheme provided by the utility model, the conventional series reactors adopting dry type hollow reactors or dry type iron core reactors, which are arranged in the series capacitor device, are replaced by the magnetic shielding reactors, and internal and external iron cores are arranged inside and outside the coils of the magnetic shielding reactors, so that magnetic flux leakage is very small, and in addition, no vibration is generated, noise is also low, and further the problems of interference of the magnetic flux leakage on secondary communication devices, as well as noise and vibration are effectively solved.

Description

City Substation Parallel Capacitor device

Technical field

The utility model relates to parallel capacitor device, specifically relates to the parallel capacitor device of a kind of city transformer station.

Background technology

Series reactor during the city becomes in the parallel capacitor device, at present dry-type air-core reactors that adopt also have engineering to adopt reactor with T-shaped core more.

Complete indoor station electric equipment all is installed on indoor, and apparatus arrangement is compact, and many secondary devices and secondary cable are arranged; Apparatus arrangement is nearer apart from the operations staff in addition, produces following situation inevitably:

(1) dry-type air-core reactor does not have iron core, and leakage field is bigger, need consider antimagnetic distance during installation, makes package unit increase; If antimagnetic distance is undesirable, cause external magnetic field big, but interfere electrical secondary system, communication system etc.;

(2) select for use dry type iron core string anti-, noise is big, and vibration is arranged, and the operations staff is produced noise jamming.

The utility model content

The purpose of the utility model provides that a kind of electromagnetic noise interference is little, floor space is little, arrangement is reasonable, the parallel capacitor device of the city transformer station that cable is easy for installation.

For realizing above-mentioned purpose, the utility model adopts following technical scheme:

The isolating switch that the utility model comprises fence and is positioned at fence, isolating switch is connected with the capacitor group with series reactor, and described series reactor is the magnetic screen reactor.

Described capacitor group adopts the 500kva capacitor unit.

Adopt the utility model of technique scheme; Series reactor in the parallel capacitor device is replaced by the magnetic screen reactor by original dry-type air-core reactor or reactor with T-shaped core; Be provided with interior outer iron core inside and outside the online bag of magnetic screen reactor, so leakage field is very little, does not vibrate in addition; Noise is also very little, has overcome leakage field so effectively to problems such as the interference of secondary, communication equipment and noise, vibrations.

Description of drawings

Fig. 1 is the layout plan of capacitor device in the prior art.

Fig. 2 is an A-A sectional drawing among Fig. 1.

Fig. 3 is the layout plan of the utility model capacitor device.

Fig. 4 is a B-B sectional drawing among Fig. 3.

Fig. 5 is a C-C sectional drawing among Fig. 3.

Embodiment

Like Fig. 3, Fig. 4, shown in Figure 5, the isolating switch 1 that the utility model comprises fence 4 and is positioned at fence, isolating switch is connected with capacitor group 3 with series reactor 2.Above-mentioned isolating switch 1, series reactor 2 and capacitor group 3 threes are triangularly arranged, and specifically, isolating switch 1 is installed in wide of fence 4 and is positioned at passage 5 sides; On the inlet wire cable 6 of isolating switch directly draws along wall from bottom, and after the leap of series reactor 2 tops, be connected with isolating switch 1, needn't be crooked, easy for installation, attractive in appearance.

When two cover parallel capacitor devices, two covering devices can be arranged face-to-face, middle reserved passageway, and the handled easily isolating switch helps the capacitor device integral arrangement.

Series reactor 2 in the utility model is the magnetic screen reactor, and the magnetic screen reactor is to be provided with iron core inside and outside the online bag, utilizes the permeability of iron core to be far longer than the characteristic of air, and part changes the path of magnetic flux, thereby reduces the divergent state of magnetic flux at air.The magnetic screen reactor is compared with air-core reactor, and volume is little, and its volume is about 30% ~ 50% of air core reactor; Leakage field is few, and installation need not be considered antimagnetic distance, therefore, significantly reduces the installation dimension of whole parallel capacitor device.In addition, compare with reactor with T-shaped core, it is in light weight, and noise is little, does not vibrate, and price is low.

Development along with the capacitor manufacturing technology; The monomer capacity of capacitor unit is increasing, and domestic especially in recent years many capacitor manufactory has all adopted the full film unit capacitor technology of interior fuse, the 334kva before making condenser capacity by the more than ten years; Rise to 500kva, in addition bigger.The all capable 500kva product of producing of present most of manufactory.With single pool-size 9000kva is example, and the employing capacity is the 334kva capacitor unit, needs 27 in capacitor.Capacitor group 3 in the utility model is the 500kva capacitor, only needs 18, can increase capacitor monomer capacity like this, can reduce capacitor group overall dimensions, practices thrift investment again.

Claims

1. city Substation Parallel Capacitor device; The isolating switch (1) that it comprises fence (4) and is positioned at fence; Isolating switch is connected with capacitor group (3) with series reactor (2), it is characterized in that: described series reactor (2) is the magnetic screen reactor.

2. city according to claim 1 Substation Parallel Capacitor device is characterized in that: described capacitor group (3) adopts the 500kva capacitor unit.