CN201656488U - Low-voltage power capacitor device - Google Patents
Low-voltage power capacitor device Download PDFInfo
- Publication number
- CN201656488U CN201656488U CN2010201584553U CN201020158455U CN201656488U CN 201656488 U CN201656488 U CN 201656488U CN 2010201584553 U CN2010201584553 U CN 2010201584553U CN 201020158455 U CN201020158455 U CN 201020158455U CN 201656488 U CN201656488 U CN 201656488U
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- China
- Prior art keywords
- capacitor
- intelligent control
- power capacitor
- switching circuit
- capacitor element
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Abstract
The utility model provides a low-voltage power capacitor device which is characterized by mainly comprising a power capacitor shell, a capacitor element, a switch circuit and an intelligent control board, wherein the power capacitor shell is also externally provided with a wiring terminal; the capacitor element, the switch circuit and the intelligent control board are respectively arranged in the power capacitor shell which is internally provided with an insulating cover plate; the switch circuit and the intelligent control board are respectively arranged on the insulating cover plate; the capacitor element is arranged at the lower space of the insulating cover plate; one end of the switch circuit is connected with the wiring terminal by wires, and the other end thereof is connected to the wiring terminal of the capacitor element; and a control interface end of the switch circuit is connected with an intelligent control board by the wires, and an input port of the intelligent control board is connected with the wiring terminal outside the power capacitor shell. The capacitor device adopts an integral structure, has small volume and convenient installation and use, and is applicable to a low-voltage power distribution cabinet, a variable-platform control box and local compensation.
Description
Technical field: the utility model relates to a kind of intelligent type low-voltage electric capacitor apparatus, specifically, is with the Based Intelligent Control plate, and device for switching etc. are the power capacitor composite set that main body is assembled form with low pressure self-healing power capacitor.
Background technology: in recent years, along with the development of power control technology and continuing to bring out of new equipment, the inductive load that uses in the low-voltage supply line is more and more, idle power consumption is increasing, be the reply present situation, reactive power compensation technology has obtained using widely in the low-voltage power supply electrical network, but present domestic reactive-load compensation equipment remains in a lot of deficiencies.
1, traditional reactive power compensator is made up of reactive controller, circuit breaker, combination switch (controllable silicon or contactor etc.), thermal relay, indicator light, low voltage power capacitor, cabinet etc., its element is numerous, need very big space, and the box house wiring is long, power consumption is big, and equipment is installed, maintenance workload is big.Separate unit cabinet capacity is little, and the cost height is unfavorable for extending capacity reformation.
2, when adopting the contactor switching mode, produce easily that high power is shoved and overvoltage, cause the electric elements lost of life, and when adopting the controllable silicon switching mode, needing fin again because heat is too high, fans etc. cause equipment complexity, huge, the cost height, it is big to damage probability.
3, the capacity cell of existing low voltage power capacitor is immersed in wax, the agent of insulation wet goods liquid filling more, and this electric capacity exists great number of issues such as safety, environmental protection in manufacturing and use, had a strong impact on the promotion and application of reactive power compensation technology.
4, control and protective circuit imperfection can not in time cut off capacitor when capacitor or circuit break down.
How well to overcome above-mentioned shortcoming, become a problem of needing solution badly.
The utility model content:
The utility model purpose: the utility model provides a kind of low voltage power capacitor device, its objective is the following problem that exists in the solution capacitor device in the past: 1, traditional reactive power compensator element is numerous, volume is big, and the box house wiring is long, power consumption is big, equipment is installed, maintenance workload is big, separate unit cabinet capacity is little, cost height and the problem that is unfavorable for extending capacity reformation; 2, the capacitor device equipment complexity of employing contactor switching mode is huge, cost is high and damage the big problem of probability; 3, there is potential safety hazard and environmental protection problem not up to standard in existing low voltage power capacitor; 4, capacitor device control in the past and protective circuit imperfection can not in time cut off the problem of capacitor when capacitor or circuit break down.
Technical scheme: the utility model is achieved through the following technical solutions:
A kind of low voltage power capacitor device is characterized in that: described device mainly comprises power capacitor housing, capacitor element, switching circuit and Based Intelligent Control plate; Outside described power capacitor housing, also be provided with binding post; Described capacitor element, switching circuit and Based Intelligent Control plate all are arranged in the power capacitor housing, be provided with insulation cover plate in the described power capacitor housing, switching circuit and Based Intelligent Control plate are arranged on the insulation cover plate, and capacitor element is arranged on the lower space of insulation cover plate; One end of switching circuit is connected to binding post by lead, and the other end is connected on the binding post of capacitor element by lead; The control interface end of switching circuit joins by lead and Based Intelligent Control plate, and the outer binding post of the input port of Based Intelligent Control plate and power capacitor housing joins.
Capacitor element is a plurality of, inserts switching circuit after a plurality of capacitor element parallel connections; Be filled with the nontoxic filler of insulation between per two capacitor elements, the outside of each capacitor element all is surrounded by metal fin.
Described capacitor element is 3～6; The nontoxic filler of described insulation is a mineral grain.
Described Based Intelligent Control plate comprises single-chip microcomputer, sample circuit, operational amplifier, A/D converter, protective circuit; Sample circuit concatenation operation amplifier, operational amplifier connects A/D converter, and A/D converter connects single-chip microcomputer, and single-chip microcomputer connects switching circuit and protective circuit respectively, and protective circuit also is connected with switching circuit; The input port of described Based Intelligent Control plate is connected to single-chip microcomputer.
Advantage and effect: the utility model provides a kind of low voltage power capacitor device, and described device mainly comprises power capacitor housing, capacitor element, switching circuit and Based Intelligent Control plate; Outside described power capacitor housing, also be provided with binding post; Described capacitor element, switching circuit and Based Intelligent Control plate all are arranged in the power capacitor housing, be provided with insulation cover plate in the described power capacitor housing, switching circuit and Based Intelligent Control plate are arranged on the insulation cover plate, and capacitor element is arranged on the lower space of insulation cover plate; One end of switching circuit is connected to binding post by lead, and the other end is connected on the binding post of capacitor element by lead; The control interface end of switching circuit joins by lead and Based Intelligent Control plate.
Capacitor adopts the pure dry type capacity cell structure of epoxy resin perfusion, each capacitor has 3 to 6 capacitor elements to be formed in parallel, capacitor element places in the metal shell, the nontoxic mineral grain of fin and filling insulation is housed between capacitor element, can avoids capacitor blast, burning and contaminated environment.
The Based Intelligent Control plate comprises single-chip microcomputer, sample circuit, operational amplifier, A/D converter and protective circuit.Single-chip microcomputer and switching circuit join, and according to program the controllable silicon in the control switch circuit successively and the switching of relay are set.The data that obtain by sample circuit are through operational amplifier, A/D converter, and processing such as single-chip microcomputer come Drive Protecting Circuit, thereby guarantee capacitor safe work.
The utility model compared with prior art has following advantage:
1, the integrated structure that integrates building-out capacitor, online protector, combination switch and circuits for triggering, back panel wiring is short, and power consumption is little, and cost is low, and volume is little, and is easy to use.
2, adopt the contactless throw-in and throw-off switch, operating passing zero, no impact, no-flashy-flow, response speed is fast, compensation effect good.
3, have overvoltage, under-voltage, short circuit, overcurrent, three-phase imbalance protection and self-diagnostic function.
4, this intellectual electric capacitor apparatus safety, environmental protection is produced simple and easyly, has popularizing value widely.
Description of drawings:
Fig. 1 is an integrally-built partial sectional view of the present utility model.
Among the figure: 1-power capacitor housing; The 2-capacitor element; The 3-metal fin; The 4-insulation filler; The 5-lead; The 6-insulation cover plate; The 7-switching circuit; 8-Based Intelligent Control plate; The 9-binding post.
Embodiment: the utility model is described further below in conjunction with accompanying drawing:
As shown in Figure 1, the utility model provides a kind of low voltage power capacitor device, and described device mainly comprises power capacitor housing 1, capacitor element 2, switching circuit 7 and Based Intelligent Control plate 8; Outside described power capacitor housing 1, also be provided with binding post 9; Described capacitor element 2, switching circuit 7 and Based Intelligent Control plate 8 all are arranged in the power capacitor housing 1, be provided with insulation cover plate 6 in the described power capacitor housing 1, switching circuit 7 and Based Intelligent Control plate 8 are arranged on the insulation cover plate 6, and capacitor element 2 is arranged on the lower space of insulation cover plate 6; One end of switching circuit 7 is connected to binding post 9 by lead 5, and the other end is connected on the binding post of capacitor element 2 by lead 5; The control interface end of switching circuit 7 joins by lead 5 and Based Intelligent Control plate 8; Binding post 9 outside the input port of Based Intelligent Control plate 8 and the power capacitor housing 1 joins and is controlled by outside idle compensating control.
The quantity of described capacitor element 2 is 3～6; The nontoxic filler of described insulation is a mineral grain.
Described Based Intelligent Control plate comprises single-chip microcomputer, sample circuit, operational amplifier, A/D converter, protective circuit; Sample circuit concatenation operation amplifier, operational amplifier connects A/D converter, and A/D converter connects single-chip microcomputer, and single-chip microcomputer connects switching circuit 7 and protective circuit respectively, and protective circuit also is connected with switching circuit 7; The input port of described Based Intelligent Control plate 8 is connected to single-chip microcomputer.
Operation principle:
Under the control of the single-chip microcomputer of the utility model in Based Intelligent Control plate 8, when receiving electric capacity that outside idle compensating control provides and drop into signal, at first to make the controllable silicon in the switching circuit 7 be conducting under zero the state at voltage to single-chip microcomputer, relay adhesive after time-delay a period of time in the switching circuit 7, controllable silicon disconnects, and connects the capacitor long-term work by relay.When idle compensating control provides capacitor and cuts out signal, the conducting of controllable silicon elder generation, relay disconnects then, and the back controllable silicon disconnects under the state of current over-zero again, thereby finishes the capacitor switching process one time.Idle compensating control is connected to binding post 9 when using.
In capacitor device switching process, comprise single-chip microcomputer owing to having adopted; sample circuit; operational amplifier; A/D converter; the Based Intelligent Control plate that protective circuit etc. are formed; and the controllable silicon in the control switch circuit 7 successively and the switching of relay are set, thereby guaranteed capacitor element safety, work reliably according to program.
Because capacitor device adopts integral structure, volume is little, and is easy to install, particularly suitable low-voltage distribution cabinet, change platform control cabinet and local compensation.
Claims (4)
1. low voltage power capacitor device, it is characterized in that: described device mainly comprises power capacitor housing (1), capacitor element (2), switching circuit (7) and Based Intelligent Control plate (8); Outside described power capacitor housing (1), also be provided with binding post (9); Described capacitor element (2), switching circuit (7) and Based Intelligent Control plate (8) all are arranged in the power capacitor housing (1), be provided with insulation cover plate (6) in the described power capacitor housing (1), switching circuit (7) and Based Intelligent Control plate (8) are arranged on the insulation cover plate (6), and capacitor element (2) is arranged on the lower space of insulation cover plate (6); One end of switching circuit (7) is connected to binding post (9) by lead (5), and the other end is connected on the binding post of capacitor element (2) by lead (5); The control interface end of switching circuit (7) joins by lead (5) and Based Intelligent Control plate (8), and the outer binding post (9) of the input port of Based Intelligent Control plate (8) and power capacitor housing (1) joins.
2. low voltage power capacitor device according to claim 1 is characterized in that: capacitor element (2) is for a plurality of, and switching circuit (7) is inserted in a plurality of capacitor elements (2) back in parallel; Be filled with the nontoxic filler of insulation between per two capacitor elements (2), the outside of each capacitor element (2) all is surrounded by metal fin (3).
3. low voltage power capacitor device according to claim 2 is characterized in that: described capacitor element (2) is 3～6; The nontoxic filler of described insulation is a mineral grain.
4. according to any described low voltage power capacitor device among the claim 1-3, it is characterized in that: described Based Intelligent Control plate comprises single-chip microcomputer, sample circuit, operational amplifier, A/D converter, protective circuit; Sample circuit concatenation operation amplifier, operational amplifier connects A/D converter, and A/D converter connects single-chip microcomputer, and single-chip microcomputer connects switching circuit (7) and protective circuit respectively, and protective circuit also is connected with switching circuit (7); The input port of described Based Intelligent Control plate (8) is connected to single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201584553U CN201656488U (en) | 2010-04-14 | 2010-04-14 | Low-voltage power capacitor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201584553U CN201656488U (en) | 2010-04-14 | 2010-04-14 | Low-voltage power capacitor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201656488U true CN201656488U (en) | 2010-11-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201584553U Expired - Fee Related CN201656488U (en) | 2010-04-14 | 2010-04-14 | Low-voltage power capacitor device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201656488U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732933A (en) * | 2017-11-27 | 2018-02-23 | 江苏现代电力科技股份有限公司 | Exempt from the idle control assembly structure of d type Intelligent low-voltage |
-
2010
- 2010-04-14 CN CN2010201584553U patent/CN201656488U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732933A (en) * | 2017-11-27 | 2018-02-23 | 江苏现代电力科技股份有限公司 | Exempt from the idle control assembly structure of d type Intelligent low-voltage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20120414 |