CN205377293U

CN205377293U - Harmonic cabinet

Info

Publication number: CN205377293U
Application number: CN201620173605.5U
Authority: CN
Inventors: 袁慧
Original assignee: Tianjin Juxinrong Electric Equipment Manufacturing Co Ltd
Current assignee: Tianjin Juxinrong Electric Equipment Manufacturing Co Ltd
Priority date: 2016-03-08
Filing date: 2016-03-08
Publication date: 2016-07-06
Anticipated expiration: 2026-03-08

Abstract

The utility model discloses a harmonic cabinet, including the cabinet body, the internal main circuit breaker that is provided with of cabinet, this main circuit breaker are established ties on filtering circuit, and this filtering circuit includes a filtering circuit, the 2nd filtering circuit and the 3rd filtering circuit, and a filtering circuit goes up to establish ties has a current transformer, fourth current transformer, first circuit breaker, first silicon controlled rectifier subassembly and a tunable filter ware, the 2nd filtering circuit goes up to establish ties has the 2nd current transformer, the 5th current transformer, first circuit breaker, second silicon controlled rectifier subassembly and the 2nd tunable filter ware, the 3rd filtering circuit goes up to establish ties has the 3rd current transformer, the 6th current transformer, first circuit breaker, third silicon controlled rectifier subassembly and the 3rd tunable filter ware. This harmonic cabinet is rational in infrastructure, can restrain effectively and administer the harmonic, guarantees quality of supply, reduces the line loss, and the reliability is high, and is small.

Description

A kind of harmonic wave cabinet

Technical field

This utility model relates to a kind of harmonic wave cabinet, belongs to electric power project engineering field.

Background technology

Nonlinear load (such as speed-regulating actuator, converter, uninterrupted power source, dimming lamp, television set, electric arc furnace, electric welding machine, fluorescent lamp etc.) draws non-linear cycle electric current from electrical network, this non-linear current can be broken down into the Fundamental-frequency Current (fundamental frequency the is f=50Hz) electric current plus a series of fundamental frequency multiples (frequency is nf) by Fourier transform, will be above the electric current of fundamental frequency and be called harmonic current, title n is overtone order.

The harm of harmonic wave includes the rated current and the voltage that increase various electrical equipment, causes extra power attenuation therefrom, directly makes the efficiency of electrical equipment reduce；Hinder the normal operation of electricity equipment, cause added losses, reduce the service life of equipment so that it is lose normal discriminating power, time serious, also can cause the resonance phenomena in public electric wire net.

Utility model content

The purpose of this utility model is in that to solve the problems referred to above, it is provided that a kind of novel harmonic wave cabinet.

Harmonic wave cabinet described in the utility model includes cabinet, main circuit breaker it is provided with in cabinet, this main circuit breaker is connected on filter circuit, this filter circuit includes the first filter circuit, the second filter circuit and the 3rd filter circuit, wherein being in series with the first current transformer, the 4th current transformer, the first chopper, the first silicon controlled component and the first tuning filtering device on the first filter circuit, this first tuning filtering device is connected with the first end points of the first filter capacitor and the first end points of the second filter capacitor simultaneously；Being in series with the second current transformer, the 5th current transformer, the first chopper, the second silicon controlled component and second tune wave filter on second filter circuit, this second tune wave filter is connected with the second end points of the first filter capacitor and the second end points of the second filter capacitor simultaneously；Being in series with the 3rd current transformer, the 6th current transformer, the first chopper, the 3rd silicon controlled component and three-tuned filter on 3rd filter circuit, this three-tuned filter is connected with the 3rd end points of the first filter capacitor and the 3rd end points of the second filter capacitor simultaneously；This first filter capacitor is sequentially connected with triangularity by three capacitors, and each wing of this triangle is respectively arranged with a capacitor, three summits of described the first end points, the second end points and the 3rd end points respectively this triangle；The structure of the second described filter capacitor is identical with this first filter capacitor.

The 4th described current transformer is also connected with the first spark gap, the other end ground connection of this first spark gap；5th current transformer is also connected with the second spark gap, the other end ground connection of this second spark gap；6th current transformer is also connected with the 3rd spark gap, the other end ground connection of the 3rd spark gap.

The filter circuit that described filter circuit is multiple, different is in parallel.

Compared with prior art, technical solutions of the utility model provide the benefit that:

Harmonic wave cabinet described in the utility model is reasonable, it is possible to effectively suppresses and administers harmonic wave, it is ensured that power supply quality, reduces line loss, and reliability is high, and volume is little.

Accompanying drawing explanation

Fig. 1 is the circuit connection diagram of harmonic wave cabinet described in the utility model.

Detailed description of the invention

Below in conjunction with accompanying drawing, the technical scheme in this utility model is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under the premise not making creative work, broadly fall into the scope of this utility model protection.

As shown in Figure 1, harmonic wave cabinet described in the utility model includes cabinet (not shown), main circuit breaker QF it is provided with in cabinet, this main circuit breaker QF is connected on filter circuit, this filter circuit includes the first filter circuit, second filter circuit and the 3rd filter circuit, first filter circuit is wherein in series with the first current transformer TA1, 4th current transformer TA4, first chopper 1QF, first silicon controlled component TR1, first tuning filtering device DK1, this first tuning filtering device DK1 is connected with first end points 1 of the first filter capacitor 1C and first end points 11 of the second filter capacitor 2C simultaneously；Second filter circuit is in series with the second current transformer TA2, the 5th current transformer TA5, the first chopper 1QF, the second silicon controlled component TR2, second tune filter D K2, this second tune filter D K2 are connected with second end points 2 of the first filter capacitor 1C and second end points 12 of the second filter capacitor 2C simultaneously；3rd filter circuit is in series with the 3rd current transformer TA3, the 6th current transformer TA6, the first chopper 1QF, the 3rd silicon controlled component TR3, three-tuned filter DK3, this three-tuned filter DK3 is connected with the 3rd end points 3 of the first filter capacitor 1C and the 3rd end points 13 of the second filter capacitor 2C simultaneously；This first filter capacitor 1C is sequentially connected with triangularity by three capacitors, and each wing of this triangle is respectively arranged with a capacitor, first described end points the 1, second end points 2 and three summits of the 3rd end points 3 respectively this triangle；The structure of the second described filter capacitor 2C is identical with this first filter capacitor 1C.

The 4th described current transformer TA4 is also connected with the first spark gap F1, the other end ground connection of this first spark gap F1；5th current transformer TA5 is also connected with the second spark gap F2, the other end ground connection of this second spark gap F2；6th current transformer TA6 is also connected with the 3rd spark gap F3, the other end ground connection of the 3rd spark gap F3.

The filter circuit that described filter circuit is multiple, different is in parallel.In embodiment as shown in Figure 1, in parallel by three different filter circuits respectively.Filter circuit in the middle of wherein includes the second chopper 2QF, middle silicon controlled component 3TR, middle tuning wave filter 2DK, and the 3rd filter capacitor 3C and the four filter capacitor 4C, the connected mode of each parts is identical with the filter circuit on the left side.The filter circuit on the right includes the 3rd chopper 3QF, right silicon controlled component 4TR, right tuning filtering device 3DK and the five filter capacitor 5C.The filter circuit on the right is distinctive in that with middle filter circuit and only includes a filter capacitor.Although the embodiment shown in Fig. 1 only has three filter circuits, but those skilled in the art are fully able to understanding, it is possible to adopt any number of filter circuit in parallel, it is achieved the technique effect of harmonic wave control.

In sum, being this utility model embodiment content, and obvious embodiment of the present utility model is not limited to that, it according to different application environment, can utilize functional realiey corresponding demand of the present utility model.

Claims

1. a harmonic wave cabinet, including cabinet, it is characterized in that, main circuit breaker it is provided with in cabinet, this main circuit breaker is connected on filter circuit, this filter circuit includes the first filter circuit, the second filter circuit and the 3rd filter circuit, wherein being in series with the first current transformer, the 4th current transformer, the first chopper, the first silicon controlled component and the first tuning filtering device on the first filter circuit, this first tuning filtering device is connected with the first end points of the first filter capacitor and the first end points of the second filter capacitor simultaneously；Being in series with the second current transformer, the 5th current transformer, the first chopper, the second silicon controlled component and second tune wave filter on second filter circuit, this second tune wave filter is connected with the second end points of the first filter capacitor and the second end points of the second filter capacitor simultaneously；Being in series with the 3rd current transformer, the 6th current transformer, the first chopper, the 3rd silicon controlled component and three-tuned filter on 3rd filter circuit, this three-tuned filter is connected with the 3rd end points of the first filter capacitor and the 3rd end points of the second filter capacitor simultaneously；This first filter capacitor is sequentially connected with triangularity by three capacitors, and each wing of this triangle is respectively arranged with a capacitor, three summits of described the first end points, the second end points and the 3rd end points respectively this triangle；The structure of the second described filter capacitor is identical with this first filter capacitor.

2. harmonic wave cabinet according to claim 1, it is characterised in that the 4th described current transformer is also connected with the first spark gap, the other end ground connection of this first spark gap；5th current transformer is also connected with the second spark gap, the other end ground connection of this second spark gap；6th current transformer is also connected with the 3rd spark gap, the other end ground connection of the 3rd spark gap.

3. harmonic wave cabinet according to claim 2, it is characterised in that the filter circuit that described filter circuit is multiple, different is in parallel.