CN210669112U

CN210669112U - Dynamic filtering compensation device

Info

Publication number: CN210669112U
Application number: CN202020098674.0U
Authority: CN
Inventors: 郭乃理; 黄建琼; 杨雪梅
Original assignee: Electronic Research Insitutue National Institute Of Measurement And Testing Technology
Current assignee: Electronic Research Insitutue National Institute Of Measurement And Testing Technology
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-06-02
Anticipated expiration: 2030-01-16

Abstract

The utility model relates to a harmonic filters the field, and the purpose provides a dynamic filtering compensation device, the utility model discloses a rack, power cord passageway, power switch and filtering compensation module, the rack is still including operation cabinet door, heat dissipation passageway, control button and protection shield, be provided with the power cord passageway on the base of rack, control button with the power switch electricity is connected, filtering compensation module passes through power switch with power cord channel connects, filtering compensation module's top is provided with the protection shield, be provided with the fan on the protection shield, be provided with a plurality of through-holes on the protection shield, the air outlet of fan with the through-hole intercommunication, heat dissipation passageway sets up the top of rack, the utility model discloses rational in infrastructure, the practicality is strong, is fit for promoting.

Description

Dynamic filtering compensation device

Technical Field

The utility model relates to a smart power grids field, concretely relates to dynamic filtering compensation arrangement.

Background

The harmonics reduce the efficiency of production, transmission and utilization of electrical energy, cause overheating of electrical equipment, vibration and noise generation, and cause insulation aging, shortened service life, and even failure or burnout. The harmonic wave can cause the local parallel resonance or series resonance of the power system, so that the harmonic wave content is amplified, and the equipment such as a capacitor and the like is burnt. Harmonic waves can also cause relay protection and automatic device malfunction, which makes electric energy metering chaotic. Outside of the power system, harmonics can cause severe interference to communication equipment and electronic equipment. The harmonic pollution of the power grid is becoming more and more serious, various faults and accidents caused by the harmonic wave are also happening continuously,

therefore, a dynamic filtering compensation device is needed, which can measure different types of parameters such as frequency, voltage, current, active power, reactive power, power factor, harmonic component and the like, can realize asynchronous automatic switching, and can realize functions of harmonic out-of-limit, voltage out-of-limit, system oscillation alarm and protection.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a dynamic filtering compensation device, which solves the problem of harmonic oscillation in the prior art through a filtering compensation module, and has reasonable structure, ingenious design and suitable popularization;

in order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a dynamic filtering compensation device, includes rack, power cord passageway, power switch and filtering compensation module, the rack is still including operation cabinet door, heat dissipation passageway, control button and protection shield, be provided with the power cord passageway on the base of rack, control button with the power switch electricity is connected, filtering compensation module passes through the power switch with power cord channel connects, filtering compensation module's top is provided with the protection shield, be provided with the fan on the protection shield, be provided with a plurality of through-holes on the protection shield, the air outlet of fan with the through-hole intercommunication, the heat dissipation passageway sets up the top of rack.

Preferably, the wind power generation device further comprises a fan switch, two ends of the fan switch are respectively connected with a power line channel and a fan, and the fan switch is connected with the filtering compensation module in parallel.

Preferably, the power supply device further comprises a power supply connection base and a terminal head, the power supply connection base is electrically connected with the filtering compensation module, and the top of the filtering compensation module is connected with the protection plate through the terminal head.

Preferably, the system further comprises a switching device, and the filtering compensation module is connected with the power grid through the switching device.

Preferably, the device further comprises a DSP measurement and control module, wherein standard parameters are arranged in the DSP measurement and control module, and when data acquired by the DSP measurement and control module and the standard parameters deviate, the device drives the switching device to perform asynchronous switching.

Preferably, the filtering compensation module adopts an MST/MSK series filtering compensation module.

Preferably, the switching device is an HKT series switching device.

Preferably, the DSP measurement and control module is a CVT-18 series measurement and control device.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the filtering compensation module can be used for automatically filtering the electric power;

2. the fan can automatically work when the filter compensation module works, and the fan automatically stops when the filter compensation module stops working, so that energy is saved.

Drawings

FIG. 1 is a block diagram of a dynamic filter compensation apparatus;

FIG. 2 is a structural diagram of the cabinet body of the present invention;

fig. 3 is a schematic diagram of harmonic filtering according to an embodiment of the present invention.

1, cabinet; 2. a fan; 3. a heat dissipation channel; 4. a control button; 5. a protection plate; 6. a power line channel; 7. operating the cabinet door; 8. a through hole; 9. a filtering compensation module; 10. the power supply is connected with the base; 11. a terminal head.

Detailed Description

The technical solution in the embodiments of the present invention is clearly and completely described below with reference to fig. 1 to 3 of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, those skilled in the art can realize all other embodiments without creative efforts.

In the description of the present invention, it should be understood that the terms "counterclockwise", "clockwise", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Fig. 1 is a structural diagram of a dynamic filtering compensation device of the present invention;

the utility model provides a dynamic filtering compensation device, includes rack 1, power cord passageway 6, power switch and filtering compensation module 9, rack 1 is still including operation cabinet door 7, heat dissipation passageway 3, control button 4 and protection shield 5, be provided with power cord passageway 6 on the base of rack 1, filtering compensation module 9 with 1 inner wall welding of rack, control button 4 with the power switch electricity is connected, filtering compensation module 9 passes through power switch with power cord passageway 6 is connected, the top of filtering compensation module 9 is provided with protection shield 5, be provided with fan 2 on protection shield 5, be provided with a plurality of through-holes 8 on protection shield 5, the air outlet of fan 2 with through-hole 8 communicates, heat dissipation passageway 3 sets up the top of rack 1.

It is worth to be noted that, referring to fig. 2, the device further includes a fan switch, two ends of the fan switch are respectively connected with a power line channel and a fan, the fan switch is connected with the filtering compensation module in parallel, the device further includes a power supply connection base 10 and a terminal head 11, the power supply connection base is electrically connected with the filtering compensation module, the top of the filtering compensation module is connected with the protection board through the terminal head, the device further includes a switching device, the filtering compensation module is connected with a power grid through the switching device, the device further includes a DSP measurement and control module, a standard parameter is arranged in the DSP measurement and control module, when data obtained by the DSP measurement and control module deviates from the standard parameter, the switching device is driven to perform unequal steps, the filtering compensation module adopts an MST/MSK series filtering compensation module, and the switching device adopts an HKT series switching device, the DSP measurement and control module adopts CVT-18 series measurement and control devices.

It should be noted that, referring to fig. 3, the present embodiment is composed of a CVT-18 series measurement and control device, an MST/MSK series filtering compensation module, a bus system, a protection system, and a cabinet. The measurement and control unit measures reactive power, and according to preset parameters, the MST filtering compensation module performs automatic switching in unequal steps through the HKT contactless fast inrush current-free switching device to accurately implement three-phase and split-phase reactive compensation; the MSK filtering compensation module performs automatic switching in different steps through the switching module, and three-phase reactive compensation is accurately implemented. Due to the connection of the reactor, the oscillation of the system is prevented, and a large amount of harmonic components are absorbed according to purposeful design.

It is worth to be noted that the measurement and control device adopts the DSP technology, can measure different types of parameters such as frequency, voltage, current, active power, reactive power, power factor, harmonic component and the like, can realize asynchronous automatic switching, and can realize functions of harmonic out-of-limit, voltage out-of-limit, system oscillation alarm and protection.

It is worth to say that the HKT contactless fast inrush current switching device or the high-performance strong contactor performs switching, and the control button is a master control electrical appliance with simple structure and wide application.

It should be noted that, referring to fig. 2, the diameter of the through hole is smaller than that of the heat dissipation channel, and considering that the air density of hot air is smaller than that of cold air, because the conventional filter device works in an environment with a temperature of less than 45 °, the fan is arranged to dissipate heat, and hot air is dissipated out of the cabinet through the through hole and the heat dissipation channel, so that the service life of the device is further prolonged, the blocking of the filtering efficiency when the temperature is too high is avoided, and the filtering efficiency of the device is improved.

To sum up, the utility model discloses an implementation principle does: through combining mutually of above-mentioned part, have two filtering compensation modules that independently carry out work, can carry out quick filtering to electric power and handle, improved active power filter's work efficiency, more high-efficient practical, the utility model discloses rational in infrastructure, design benefit is fit for promoting.

Claims

1. The dynamic filtering compensation device is characterized by comprising a cabinet (1), a power line channel (6), a power supply switch and a filtering compensation module (9), wherein the cabinet (1) further comprises an operation cabinet door (7), a control button (4) and a protection plate (5), the power line channel (6) is arranged on a base of the cabinet (1), the operation cabinet door (7) is hinged with the cabinet (1), the control button (4) is arranged on the operation cabinet door (7), the control button (4) is electrically connected with the power supply switch, the filtering compensation module (9) is connected with the power line channel (6) through the power supply switch, the protection plate (5) is arranged at the top of the filtering compensation module (9), the edge of the protection plate (5) is welded with the inner wall of the cabinet (1), the protection plate (5) is provided with a fan (2), the air conditioner is characterized in that a plurality of through holes (8) are formed in the protection plate (5), an air outlet of the fan (2) is communicated with the through holes (8), a heat dissipation channel (3) is formed in the top of the cabinet (1), the air conditioner further comprises a fan (2) switch, two ends of the fan (2) switch are respectively connected with the filtering compensation module (9) and the fan (2), the air conditioner further comprises a power supply connection base (10) and a terminal head (11), the power supply connection base (10) is electrically connected with the filtering compensation module (9), the top of the filtering compensation module (9) is connected with the protection plate (5) through the terminal head (11), the air conditioner further comprises a switching device, the filtering compensation module (9) is connected with a power supply before filtering through the switching device, the air conditioner further comprises a DSP measurement and control module, standard parameters are arranged in the DSP measurement and control module, and when data acquired by the DSP, the switching device is driven to carry out switching, the MST/MSK series filtering compensation module is adopted in the filtering compensation module (9), the HKT series switching device is selected for use by the switching device, the CVT-18 series measurement and control device is selected for use by the DSP measurement and control module, and the diameter of the through hole (8) is smaller than that of the heat dissipation channel (3).