CN218526099U - Cabinet type medium-high voltage reactive power compensation device - Google Patents
Cabinet type medium-high voltage reactive power compensation device Download PDFInfo
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- CN218526099U CN218526099U CN202222772577.7U CN202222772577U CN218526099U CN 218526099 U CN218526099 U CN 218526099U CN 202222772577 U CN202222772577 U CN 202222772577U CN 218526099 U CN218526099 U CN 218526099U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The utility model relates to a well high voltage reactive compensation technical field specifically is a cabinet type well high voltage reactive power compensator, including a plurality of high-pressure reactive compensation cabinets and a plurality of inlet wire switch boards, the base face left side of high-pressure reactive compensation cabinet is provided with the electromagnetic lock, be provided with shunt capacitor, vacuum contactor, current transformer, discharge coil, surge protection area and series reactor on the high-pressure reactive compensation cabinet respectively, it is a plurality of connect through the main bus between high-pressure reactive compensation cabinet and a plurality of inlet wire switch boards, vacuum contactor inserts the main bus, and this well high voltage reactive power compensator is arranged in rated voltage 1kV ~ 35kV power frequency electric power system, as the perception of shunt capacitor group, among the compensating system for improve electric wire netting power factor, improve distribution voltage quality, reduce the loss, increase power equipment's supply capacity, in order to obtain the operation of the safe and reliable economy of distribution system.
Description
Technical Field
The utility model relates to a medium and high voltage reactive power compensation technical field specifically is a cabinet type medium and high voltage reactive power compensation device.
Background
With the rapid development of national economy, high-voltage and large-capacity power equipment is more and more, the quality of electric energy of a power system is poorer and poorer, and the power factor is lower and lower. Along with the increasing national requirements on the electric energy quality and the power factor of an electric power system, a high-voltage reactive power compensation device suitable for local compensation, high power and high voltage level is produced.
The medium-high voltage reactive power compensation device in the prior art still has the following defects: the existing medium-high voltage reactive power compensation device is lack of a reactor, harmonic waves cannot be restrained, and capacity adjustment of the maximum series cannot be realized by the minimum number of capacitor banks and the minimum number of high-voltage vacuum switches, so that the actual cost is increased, and the cost performance is low.
Therefore, the cabinet type medium-high voltage reactive power compensation device is designed to overcome the technical defects and improve the overall practicability, and is particularly important.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high voltage reactive power compensator in cabinet type to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a cabinet type medium and high voltage reactive power compensator, includes a plurality of high voltage reactive power compensation cabinets and a plurality of inlet wire switch board, embedding respectively on the base face casing of high voltage reactive power compensation cabinet installs panel board and display, the base face left side of high voltage reactive power compensation cabinet is provided with the electromagnetic lock, it is a plurality of to be provided with shunt capacitor, vacuum contactor, current transformer, discharge coil, surge protection zone and series reactor on the high voltage reactive power compensation cabinet respectively connect through the main bus between high voltage reactive power compensation cabinet and a plurality of inlet wire switch board, vacuum contactor inserts the main bus.
As the utility model discloses preferred scheme, be connected with high-voltage fuse on the parallel capacitor, high-voltage fuse's leading-out terminal with the inlet wire end of parallel capacitor carries out series connection.
As the utility model discloses preferred scheme, binding post and arrester are still installed to high pressure reactive power compensator cabinet's inside, binding post is three-phase binding post, shunt capacitance ware and arrester are even.
As the utility model discloses preferred scheme is a plurality of install isolator and voltage reactive controller on the inlet wire switch board respectively, voltage reactive controller with isolator connects, the inlet wire cable is connected to isolator's one end, isolator with vacuum contactor connects.
As the preferred scheme of the utility model, discharge coil connects in parallel on the electric capacity return circuit, the series reactor is established ties in the electric capacity return circuit.
As the utility model discloses preferred scheme, the display is high-voltage live display, electromagnetic lock all connect and the connected mode is electric connection with the control circuit of high-pressure reactive power compensator cabinet.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses in, through a cabinet type medium-high voltage reactive power compensator who sets up to can realize following effect: 1. the high-quality three-phase power capacitor is adopted, so that the operation temperature rise is low, the discharge initial voltage is high, the sealing performance is good, and the reliability is high; 2. a discharge element is arranged in the capacitor, and after the compensation device is separated from a power grid, the residual voltage can be reduced to be below 50V within 3 minutes; 3. the power factor of the electric equipment is improved to be more than 0.95, and the current can be reduced by 10-20%; 4. the running efficiency of the equipment is improved, and the reactive loss of the line is reduced; 5. the power supply quality is improved, the output of electrical equipment is improved, and the load rate of a transformer and the efficiency of the electrical equipment are improved; increasing power supply capability, 6. Is provided with a high-voltage charged display, an electromagnetic lock and an observation window, and has a forced locking function; 7. structural design is reasonable, and convenient to use can with the synchronous switching of motor.
Drawings
FIG. 1 is a view of the overall structure of the present invention;
fig. 2 is a main view structure diagram of the high-voltage reactive compensation cabinet of the utility model;
FIG. 3 is a side structure view of the high voltage reactive power compensation cabinet of the present invention;
fig. 4 is a structural diagram of the other side of the high-voltage reactive power compensation cabinet of the utility model;
fig. 5 is a front view structure diagram of the incoming line control cabinet of the utility model;
fig. 6 is the utility model discloses high-pressure reactive power compensator's internal wiring picture.
In the figure: 1. a high-voltage reactive power compensation cabinet; 2. controlling incoming lines; 21. an isolating switch; 22. a voltage reactive controller; 3. a dashboard; 4. a display; 5. an electromagnetic lock; 6. a parallel capacitor; 61. a high voltage fuse; 7. a vacuum contactor; 8. a current transformer; 9. a discharge coil; 10. a surge protection zone; 11. a series reactor; 12. a wiring terminal; 13. an arrester.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of the present invention based on the embodiments of the present invention.
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the present invention are presented. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In an embodiment, please refer to fig. 1 to 6, the present invention provides a technical solution:
a cabinet type medium-high voltage reactive power compensation device comprises a plurality of high-voltage reactive power compensation cabinets 1 and a plurality of incoming line control cabinets 2, wherein a dashboard 3 and a display 4 are respectively embedded in a basal plane shell of each high-voltage reactive power compensation cabinet 1, an electromagnetic lock 5 is arranged on the left side of a basal plane of each high-voltage reactive power compensation cabinet 1, a parallel capacitor 6, a vacuum contactor 7, a current transformer 8, a discharge coil 9, a surge protection area 10 and a series reactor 11 are respectively arranged on each high-voltage reactive power compensation cabinet 1, the high-voltage reactive power compensation cabinets 1 and the incoming line control cabinets 2 are connected through a main bus, the vacuum contactor 7 is connected into the main bus, the medium-high voltage reactive power compensation device is used in a rated voltage 1 kV-35 kV power frequency power system and used as a parallel capacitor bank, reactive power in the compensation system is used for improving power factor of a power grid, improving quality of distribution voltage, reducing loss, increasing the supply capacity of power equipment to obtain safe, reliable and economic operation of the power distribution system, and the series reactor has a function of inhibiting harmonic waves, so as to ensure safe and reliable operation of the device and a connected power grid; the device adopts a fully-closed cabinet body and has high protection level, each set of closed cabinet is provided with a live and current display element, and the closed cabinet can be independently installed or combined with a KYN28/KYN61 switch cabinet; the device adopts a fixed compensation mode, and can adopt manual and automatic grouping switching according to the requirements of users.
Specifically, a high-voltage fuse 61 is connected to a parallel capacitor 6, a line outlet end of the high-voltage fuse 61 is connected in series with a line inlet end of the parallel capacitor 6, a wiring terminal 12 and a lightning arrester 13 are further installed inside a high-voltage reactive power compensation cabinet 1, the wiring terminal 12 is a three-phase wiring terminal, the parallel capacitor 6 is connected with the lightning arrester 13, an isolation switch 21 and a voltage reactive power controller 22 are installed on a plurality of line inlet control cabinets 2 respectively, the voltage reactive power controller 22 is connected with the isolation switch 21, one end of the isolation switch 21 is connected with a line inlet cable, the isolation switch 21 is connected with a vacuum contactor 7, a discharge coil 9 is connected in parallel on a capacitor loop, a series reactor 11 is connected in series in the capacitor loop, a display 4 is a high-voltage live display, the display 4 and an electromagnetic lock 5 are both connected with a control circuit of the high-voltage reactive power compensation cabinet 1 and are electrically connected, so that the cabinet type medium-high-voltage reactive power compensation device adopts a high-quality three-phase power capacitor, and is low in operation, high in discharge starting voltage, good in sealing performance and high reliability; a discharging element is arranged in the capacitor, and after the compensation device is separated from a power grid, the residual voltage can be reduced to be below 50V within 3 minutes; the power factor of the electric equipment is improved to be more than 0.95, and the current can be reduced by 10-20%; the running efficiency of the equipment is improved, and the reactive loss of the line is reduced; the power supply quality is improved, the output of electrical equipment is improved, and the load rate of a transformer and the efficiency of the electrical equipment are improved; increase the power supply capability, and is equipped with a high-voltage charged display, an electromagnetic lock, and an observation window, and has a forced locking function; structural design is reasonable, and convenient to use can with the synchronous switching of motor.
The utility model discloses work flow: when the cabinet type medium-high voltage reactive power compensation device is used, the device mainly comprises a high-voltage parallel capacitor bank, a series reactor, a capacitor power switching large tool touch device (vacuum switch), a current transformer, a zinc oxide lightning arrester, a reactive power automatic compensation controller, a capacitor special microcomputer protection unit, a digital voltage ammeter, a temperature control fan device, an electromagnetic lock sensor insulator, cabinet body accessories and the like, and simultaneously, the device adopts an advanced digital (or automatic according to reactive demand power factor) grouping mode to carry out binary coding on capacitors with different capacities, can realize capacity adjustment of the most stages by using the least capacitor bank number and the least high-voltage vacuum switch through automatic optimization combination, does not cause great increase of cost, has good cost performance ratio, and can also carry out equipartition configuration according to the requirements of users, step-by-step switching, a spraying-step fuse in the device is connected with a capacitor in series, when partial series section (50% -70%) in the capacitor breaks down, the fuse acts to rapidly cut the fault capacitor from the capacitor bank, the fault expansion is effectively prevented (an internal fuse protection mode is adopted above 200 kvar), a discharge coil is connected in parallel with a capacitor loop, after the capacitor bank is withdrawn from a power supply to operate, the residual voltage on the capacitor can be reduced to below 50v from a rated voltage peak value within five seconds, a series reactor is connected in series in the capacitor loop to limit the higher harmonic in the switched capacitor bank and reduce the inrush current, the reactance rate of the series reactor is only 0.1% -1% of the limiting inrush current, 4.5% -6% of the limiting harmonic above five times is selected, and the harmonic above three times of the limiting inrush current is suppressed, 12% -13% is selected, the device has reasonable structural design and good thermal and dynamic stability, and the cabinet type electrified display device is mainly used for displaying the electrified state of the device, is provided with a program lock and an observation window and has a forced locking function; outdoor device has the rail, the cabinet door adopts the bolt rotation mode to close, safer and more reliable guarantees operation and maintainer safety, the cabinet door observation window adopts netted numerical control to punch a hole and adorns the all-round reliable design theory of double-deck explosion-proof glass, the geographical pressure relief lid is established on the cabinet top, prevent that the interior short circuit of cabinet produces pressure in the twinkling of an eye and can not release, reach international leading technical level from operation safety to the pleasing to the eye degree of equipment outward appearance, to overall dimension, colour and the inlet wire mode of device, can design according to the user's requirement.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a high voltage reactive power compensator in cabinet type, includes a plurality of high voltage reactive power compensator cabinets (1) and a plurality of inlet wire switch board (2), its characterized in that: install panel board (3) and display (4) on the base face casing of high-pressure reactive power compensation cabinet (1) respectively the embedding, the base face left side of high-pressure reactive power compensation cabinet (1) is provided with electromagnetic lock (5), it is a plurality of to be provided with shunt capacitor (6), vacuum contactor (7), current transformer (8), discharge coil (9), surge protection zone (10) and series reactor (11) on high-pressure reactive power compensation cabinet (1) respectively connect through the main bus between high-pressure reactive power compensation cabinet (1) and a plurality of inlet wire switch boards (2), vacuum contactor (7) insert the main bus.
2. The cabinet type medium-high voltage reactive power compensation device according to claim 1, wherein: the high-voltage fuse is connected to the parallel capacitor (6), and the outlet end of the high-voltage fuse (61) and the inlet end of the parallel capacitor (6) are connected in series.
3. The cabinet type medium-high voltage reactive power compensation device according to claim 1, wherein: the high-voltage reactive power compensation cabinet is characterized in that a wiring terminal (12) and a lightning arrester (13) are further installed inside the high-voltage reactive power compensation cabinet (1), the wiring terminal (12) is a three-phase wiring terminal, and the shunt capacitor (6) is connected with the lightning arrester (13).
4. The cabinet type medium-high voltage reactive power compensation device according to claim 1, wherein: a plurality of install isolator (21) and voltage reactive controller (22) on inlet wire switch board (2) respectively, voltage reactive controller (22) with isolator (21) are connected, the inlet wire cable is connected to isolator's (21) one end, isolator (21) with vacuum contactor (7) are connected.
5. The cabinet type medium-high voltage reactive power compensation device according to claim 1, wherein: the discharge coil (9) is connected in parallel to the capacitor loop, and the series reactor (11) is connected in series in the capacitor loop.
6. The cabinet type medium-high voltage reactive power compensation device according to claim 1, wherein: the display (4) is a high-voltage electrified display, the display (4) and the electromagnetic lock (5) are connected with a control circuit of the high-voltage reactive power compensation cabinet (1) in an electric connection mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222772577.7U CN218526099U (en) | 2022-10-20 | 2022-10-20 | Cabinet type medium-high voltage reactive power compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222772577.7U CN218526099U (en) | 2022-10-20 | 2022-10-20 | Cabinet type medium-high voltage reactive power compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218526099U true CN218526099U (en) | 2023-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222772577.7U Active CN218526099U (en) | 2022-10-20 | 2022-10-20 | Cabinet type medium-high voltage reactive power compensation device |
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| Country | Link |
|---|---|
| CN (1) | CN218526099U (en) |
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2022
- 2022-10-20 CN CN202222772577.7U patent/CN218526099U/en active Active
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