CN204333957U - Power capacitor - Google Patents
Power capacitor Download PDFInfo
- Publication number
- CN204333957U CN204333957U CN201520059024.4U CN201520059024U CN204333957U CN 204333957 U CN204333957 U CN 204333957U CN 201520059024 U CN201520059024 U CN 201520059024U CN 204333957 U CN204333957 U CN 204333957U
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- CN
- China
- Prior art keywords
- control unit
- capacitor
- main control
- fling
- cut switch
- Prior art date
- 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.)
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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
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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
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The utility model relates to a kind of power capacitor, solve the problem causing component damage or misoperation because of harmonic wave, it comprises at least three group capacitor groups, switching control unit, sampling unit and main control unit, described Capacitor banks comprises the capacitor and fling-cut switch that connect successively, described fling-cut switch is connected with live wire input, described main control unit is connected with live wire input by sampling unit, described main control unit is connected with fling-cut switch by switching control unit, also comprise the fuse being arranged on live wire input, access and the disconnection of capacitor is carried out by the operating passing zero of fling-cut switch, to realize the combination of multiple compensation scheme, fuse can realize the short circuit breaking capacity of 50kA, and for the short circuit breaking capacity of circuit breaker 15 kA, fuse substantially increases short circuit breaking capacity.
Description
Technical field
The utility model relates to a kind of compensation arrangement, particularly a kind of power capacitor.
Background technology
Nowadays harmonic wave become a common issue of power consumer, and it is normally because non-linear complex device causes, the lighting apparatus etc. of the variable speed drives of such as motor, soft initiator, rectifier and ups system, arc furnace, electric welding machine, heavy construction.Harmonic wave may cause component damage or the misoperations such as transformer, capacitor, circuit breaker, and computer and communication apparatus also may be caused to break down.
Utility model content
In order to overcome the deficiency causing component damage or misoperation because of harmonic wave, the utility model provides a kind of power capacitor.
The technical scheme that the utility model adopts is: a kind of power capacitor, it comprises at least three group capacitor groups, switching control unit, sampling unit and main control unit, described Capacitor banks comprises the capacitor and fling-cut switch that connect successively, described fling-cut switch is connected with live wire input, described main control unit is connected with live wire input by sampling unit, described main control unit is connected with fling-cut switch by switching control unit, also comprises the fuse being arranged on live wire input.
When described Capacitor banks is three groups, it adopts Y-connection, central point connecting to neutral line input.
When described Capacitor banks is three groups, it adopts triangle to connect.
Between capacitor and fling-cut switch, be provided with current transformer, current transformer is connected with main control unit by overcurrent protection unit.
Also comprise temperature protection unit, capacitor is connected with main control unit by temperature protection unit.
Also comprise display unit, described display unit is connected with main control unit.
Also comprise on-line interface, described on-line interface is connected with main control unit.
Also comprise RS485 port, described RS485 port is connected with main control unit.
Described capacitor adopts dry-type capacitor.
The beneficial effects of the utility model are: the utility model carries out access and the disconnection of capacitor by the operating passing zero of fling-cut switch, to realize the combination of multiple compensation scheme; Fuse can realize the short circuit breaking capacity of 50kA, and for the short circuit breaking capacity of circuit breaker 15 kA, fuse substantially increases short circuit breaking capacity.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As shown in Figure 1, a kind of power capacitor, it comprises at least three group capacitor groups, switching control unit, sampling unit and main control unit, described Capacitor banks comprises the capacitor and fling-cut switch that connect successively, described fling-cut switch is connected with live wire input, described main control unit is connected with live wire input by sampling unit, described main control unit is connected with fling-cut switch by switching control unit, also comprise the fuse being arranged on live wire input, access and the disconnection of capacitor is carried out by the operating passing zero of fling-cut switch, to realize the combination of multiple compensation scheme, fuse can realize the short circuit breaking capacity of 50kA, and for the short circuit breaking capacity of circuit breaker 15 kA, fuse substantially increases short circuit breaking capacity.
Adopting unit to comprise current sample and voltage sample, for surveying main power network current and voltage, to calculate reactive power, power factor (PF), the harmonic wave of electrical network, carrying out auto-compensation.
When described Capacitor banks is three groups, it adopts Y-connection, central point connecting to neutral line input, and under this kind of structure, capacitor can drop into one group, two groups or three groups; When described Capacitor banks is three groups, it adopts triangle to connect, join end to end between Capacitor banks and Capacitor banks, three end points corresponding A/B/C three-phase respectively, access mutually without the need to zero line input, under this kind of structure, three group capacitors drop into simultaneously, Capacitor banks number adopts the multiple of three, and determines practical application group number according to the size of concrete cabinet and reactive power compensation amount.
Current transformer is provided with between capacitor and fling-cut switch; current transformer is connected with main control unit by overcurrent protection unit; current transformer is sampled to branch current; judged by overcurrent protection unit; if there is overcurrent; then make fling-cut switch action by main control unit, switching control unit, thus this is protected to branch road.
Also comprise temperature protection unit; capacitor is connected with main control unit by temperature protection unit; by being placed in the micro temperature sensor in capacitor; sensing capacitor internal temperature; it is out of service when capacitor temperature is too high; replace with normothermic capacitor and continue to run, thus extend the useful life of capacitor.
Also comprise display unit, described display unit is connected with main control unit, this display unit can show the information such as three-phase current, voltage, power factor (PF) and capacitor working stream, switching state, malfunction, the current operating conditions of this power capacitor is understood in time with handled easily personnel, and artificial judge the number needing switched capacitor, realize the artificial and intelligent operation/cutting of power capacitor and combine.
Also comprise on-line interface, described on-line interface is connected with main control unit, online signal when using for the parallel operation of Intelligent capacitor multiple stage; Also comprise RS485 port, described RS485 port is connected with main control unit, and port adopts MODBUS-RTU communication protocol, and intelligent power capacitor adopts high accuracy special measuring dsp chip to provide whole Monitoring Data for power monitoring and Power quality management system.
Described capacitor adopts dry-type capacitor, No leakage, overall flame are explosion-proof, environmental protection, year attenuation rate be less than 1.0%.
Below described by reference to the accompanying drawings embodiment is only preferred implementation of the present utility model, and the restriction not to protection range of the present utility model, and any improvement done based on the utility model spirit all ought within the utility model protection range.
Claims (9)
1. a power capacitor, it is characterized in that: it comprises at least three group capacitor groups, switching control unit, sampling unit and main control unit, described Capacitor banks comprises the capacitor and fling-cut switch that connect successively, described fling-cut switch is connected with live wire input, described main control unit is connected with live wire input by sampling unit, described main control unit is connected with fling-cut switch by switching control unit, also comprises the fuse being arranged on live wire input.
2. power capacitor according to claim 1, is characterized in that: when described Capacitor banks is three groups, it adopts Y-connection, central point connecting to neutral line input.
3. power capacitor according to claim 1, is characterized in that: when described Capacitor banks is three groups, and it adopts triangle to connect.
4. power capacitor according to claim 1, is characterized in that: between capacitor and fling-cut switch, be provided with current transformer, and current transformer is connected with main control unit by overcurrent protection unit.
5. power capacitor according to claim 1, is characterized in that: also comprise temperature protection unit, and capacitor is connected with main control unit by temperature protection unit.
6. power capacitor according to claim 1, is characterized in that: also comprise display unit, described display unit is connected with main control unit.
7. power capacitor according to claim 1, is characterized in that: also comprise on-line interface, described on-line interface is connected with main control unit.
8. power capacitor according to claim 1, is characterized in that: also comprise RS485 port, and described RS485 port is connected with main control unit.
9. power capacitor according to claim 1, is characterized in that: described capacitor adopts dry-type capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520059024.4U CN204333957U (en) | 2015-01-28 | 2015-01-28 | Power capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520059024.4U CN204333957U (en) | 2015-01-28 | 2015-01-28 | Power capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204333957U true CN204333957U (en) | 2015-05-13 |
Family
ID=53170272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520059024.4U Active CN204333957U (en) | 2015-01-28 | 2015-01-28 | Power capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204333957U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849121A (en) * | 2017-03-07 | 2017-06-13 | 尹清金 | A kind of explosion-proof mixing reactive power compensation cabinet |
| CN108432075A (en) * | 2016-01-28 | 2018-08-21 | 伊顿智能动力有限公司 | Including protecting the motor starting machine with monitoring function |
-
2015
- 2015-01-28 CN CN201520059024.4U patent/CN204333957U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108432075A (en) * | 2016-01-28 | 2018-08-21 | 伊顿智能动力有限公司 | Including protecting the motor starting machine with monitoring function |
| CN108432075B (en) * | 2016-01-28 | 2020-08-14 | 伊顿智能动力有限公司 | Motor starter comprising protection and monitoring functions |
| US10778000B2 (en) | 2016-01-28 | 2020-09-15 | Eaton Intellectual Power Limited | Electronic motor starter |
| CN106849121A (en) * | 2017-03-07 | 2017-06-13 | 尹清金 | A kind of explosion-proof mixing reactive power compensation cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |