CN201829963U - Low-voltage reactive-compensation complete cabinet - Google Patents
Low-voltage reactive-compensation complete cabinet Download PDFInfo
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- CN201829963U CN201829963U CN2010205941189U CN201020594118U CN201829963U CN 201829963 U CN201829963 U CN 201829963U CN 2010205941189 U CN2010205941189 U CN 2010205941189U CN 201020594118 U CN201020594118 U CN 201020594118U CN 201829963 U CN201829963 U CN 201829963U
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- compensation
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- cabinet
- reactive
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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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Abstract
The utility model relates to a low-voltage reactive-compensation complete cabinet, comprising a cabinet body; the cabinet body is internally provided with a power supply line-incoming unit, an instrument unit and a reactive compensation unit. The low-voltage reactive-compensation complete cabinet is characterized in that the reactive compensation unit comprises at least two low-voltage reactive power automatic compensation equipment which are connected by an RS-485 bus; each low-voltage reactive power automatic compensation equipment consists of a current transformer, an external controller, a zero-crossing switching switch component and a power capacitor; the current transformer and the external controller are connected; the external controller and the zero-crossing switching switch component are connected interactively; and the zero-crossing switching switch component and the power capacitor are connected by lead wires of a magnetic latching relay. In the low-voltage reactive-compensation complete cabinet, the service life of the low-voltage reactive-compensation complete cabinet is obviously prolonged, the grid stability is improved, the power supply quality is guaranteed and the effects of saving energy and reducing consumption are obvious.
Description
Technical field
The utility model belongs to the AC low voltage power switch board system, the complete cabinet of a kind of specifically low-pressure reactive compensation.
Background technology
In the existing power supply technique field, the employed low-voltage complete cabinet of AC low voltage power switch board system generally is divided into as doing a functional unit: electric power incoming line unit, instrument pack and reactive power compensation unit and other unit.Wherein the reactive power compensation unit is particularly important, its quality has determined the function of low-voltage complete cabinet, mainly there is following shortcoming in the reactive power compensation unit at present: impulse current is bigger during switching capacitance, cause the relay contact life-span shorter, mechanical connecting element is more, it is bigger to take up room, and safeguards and the equal inconvenience of maintenance.
Summary of the invention
At the complete cabinet of low-pressure reactive compensation of the prior art, its existing mechanical connecting element in reactive power compensation unit is more, and volume is big, and maintenance and expansion are inconvenient; The switching impulse current is bigger during reactive power compensation, cause useful life than defectives such as weak points, the utility model provides a kind of low-pressure reactive compensation complete cabinet, by many low-voltage reactive power automatic compensation equipment that connect by the RS-485 bus, thereby safety, no-flashy-flow when realizing operating passing zero, reduced the impact of switching, improved the rapidity of control, prolonged the useful life of the complete cabinet of imaginary power automatic compensation simultaneously greatly electrical network.
The technical solution adopted in the utility model is as follows:
The complete cabinet of a kind of low-pressure reactive compensation comprises cabinet, is provided with electric power incoming line unit, instrument pack and reactive power compensation unit in the cabinet.The reactive power compensation unit comprises at least two low-voltage reactive power automatic compensation equipment, connect by the RS-485 bus between its equipment, low-voltage reactive power automatic compensation equipment is made up of current transformer, peripheral control unit, operating passing zero switch module and power capacitor, current transformer is connected with peripheral control unit, peripheral control unit is connected alternately with the operating passing zero switch module, and the operating passing zero switch module is connected with the lead-in wire of power capacitor by magnetic latching relay.
In low-voltage reactive power automatic compensation equipment; the operating passing zero switch module is made up of fling-cut switch, central processing unit and defencive function module; central processing unit is connected alternately with peripheral control unit; the output of central processing unit is connected with defencive function module input, fling-cut switch input respectively; the output of defencive function module is connected with fling-cut switch input, power capacitor input respectively, and the fling-cut switch output is connected with the power capacitor input.
Also be provided with display in low-voltage reactive power automatic compensation equipment, be used to show every operating state, human-computer dialogue content, display is connected alternately with central processing unit.
The beneficial effects of the utility model mainly show:
The complete cabinet of the utility model low-pressure reactive compensation is when carrying out imaginary power automatic compensation, no-flashy-flow, voltge surge and rush of current have been alleviated to equipment, significantly improved the low-voltage reactive power automatic compensation service life of equipment, in addition, it is stable further to have improved circuit, guarantees power supply quality, and energy-saving and cost-reducing synergistic effect is remarkable.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is that the functional module of the complete cabinet embodiment of a kind of low-pressure reactive compensation of the utility model connects block diagram.
Fig. 2 is low-voltage reactive power automatic compensation functions of the equipments module frame charts.
Embodiment
Among Fig. 1, the complete cabinet of a kind of low-pressure reactive compensation comprises cabinet, is provided with electric power incoming line unit, instrument pack and reactive power compensation unit in the cabinet, and each unit connects with lead.
The reactive power compensation unit comprises at least two low-voltage reactive power automatic compensation equipment, connects by the RS-485 bus between its equipment, and can link together with computer.
Among Fig. 2, low-voltage reactive power automatic compensation equipment is made up of current transformer, peripheral control unit, operating passing zero switch module and power capacitor, current transformer is connected with peripheral control unit, peripheral control unit is connected alternately with the operating passing zero switch module, and the operating passing zero switch module is connected with the lead-in wire of power capacitor by magnetic latching relay.
In low-voltage reactive power automatic compensation equipment; the operating passing zero switch module is made up of fling-cut switch, central processing unit and defencive function module; central processing unit is connected alternately with peripheral control unit; the output of central processing unit is connected with defencive function module input, fling-cut switch input respectively; the output of defencive function module is connected with fling-cut switch input, power capacitor input respectively, and the fling-cut switch output is connected with the power capacitor input.
Also be provided with display in low-voltage reactive power automatic compensation equipment, be used to show every operating state, human-computer dialogue content, display is connected alternately with central processing unit.
Current transformer carries out current sample to external electrical network, after sampling is finished, transmit signal to peripheral control unit, by peripheral control unit rated output factor, determine whether external electrical network is carried out reactive power compensation, the operating passing zero switch module is controlled the input and the excision of power capacitor by the break-make of self, thereby reaches the purpose that the reactive power to external electrical network compensates.
The complete cabinet of the utility model low-pressure reactive compensation, remarkable superiority such as have that produce easily, maintenance and capacity are easy to adjust.When using the complete cabinet of this low-pressure reactive compensation, carry out imaginary power automatic compensation, no-flashy-flow, voltge surge and rush of current have been alleviated to equipment, significantly improved the useful life of low-voltage reactive power automatic compensation equipment and the complete cabinet of low-pressure reactive compensation, in addition, it is stable further to have improved circuit, guarantee power supply quality, energy-saving and cost-reducing synergistic effect is remarkable.
Claims (3)
1. complete cabinet of low-pressure reactive compensation, comprise cabinet, in described cabinet, be provided with electric power incoming line unit, instrument pack and reactive power compensation unit, it is characterized in that described reactive power compensation unit comprises at least two low-voltage reactive power automatic compensation equipment, connect by the RS-485 bus between the described low-voltage reactive power automatic compensation equipment; Described low-voltage reactive power automatic compensation equipment is made up of current transformer, peripheral control unit, operating passing zero switch module and power capacitor, described current transformer is connected with peripheral control unit, described peripheral control unit is connected alternately with the operating passing zero switch module, and described operating passing zero switch module is connected with the lead-in wire of power capacitor by magnetic latching relay.
2. the complete cabinet of low-pressure reactive compensation according to claim 1; it is characterized in that; described operating passing zero switch module is made up of fling-cut switch, central processing unit and defencive function module; described central processing unit is connected alternately with peripheral control unit; the output of described central processing unit is connected with defencive function module input, fling-cut switch input respectively; the output of described defencive function module is connected with fling-cut switch input, power capacitor input respectively, and described fling-cut switch output is connected with the power capacitor input.
3. the complete cabinet of low-pressure reactive compensation according to claim 1 is characterized in that described low-voltage reactive power automatic compensation equipment also is provided with display, and described display is connected alternately with central processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205941189U CN201829963U (en) | 2010-10-29 | 2010-10-29 | Low-voltage reactive-compensation complete cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205941189U CN201829963U (en) | 2010-10-29 | 2010-10-29 | Low-voltage reactive-compensation complete cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201829963U true CN201829963U (en) | 2011-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205941189U Expired - Fee Related CN201829963U (en) | 2010-10-29 | 2010-10-29 | Low-voltage reactive-compensation complete cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201829963U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111404173A (en) * | 2020-04-22 | 2020-07-10 | 安徽东源电力有限公司 | Industrial power-saving device with reactive power |
-
2010
- 2010-10-29 CN CN2010205941189U patent/CN201829963U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111404173A (en) * | 2020-04-22 | 2020-07-10 | 安徽东源电力有限公司 | Industrial power-saving device with reactive power |
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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: 20110511 Termination date: 20111029 |