CN201490723U - Terminal capacitance compensating device - Google Patents
Terminal capacitance compensating device Download PDFInfo
- Publication number
- CN201490723U CN201490723U CN2009202045919U CN200920204591U CN201490723U CN 201490723 U CN201490723 U CN 201490723U CN 2009202045919 U CN2009202045919 U CN 2009202045919U CN 200920204591 U CN200920204591 U CN 200920204591U CN 201490723 U CN201490723 U CN 201490723U
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- China
- Prior art keywords
- electric capacity
- compensation
- branch road
- switching
- compensation device
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- 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
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Abstract
The utility model relates to a terminal capacitance compensating device which is arranged in an equipment end and comprises a power factor measuring module and a plurality of selective capacitance compensating unit branches whose switching connection is controlled by the measuring module. The terminal capacitance compensating device selects suitable compensating branches through power factor checking to realize compensation on the spot, thyristor auxiliary switches are combined for switching and avoiding electric arc in switching, a plurality of small capacitors are further adopted by serial connection to replace big capacitors for improving the compensation precision, and the terminal capacitance compensating device can be widely applied in the equipment end and can realize environment protection and energy conservation.
Description
Technical field
The utility model relates to the alternating current environment protecting power economizer, is specifically related to a kind of terminal Electric capacity compensation device.
Background technology
At present, in the existing Electric capacity compensation device, mainly be to carry out idle capacitance compensation at power distribution cabinet, though the power factor at power distribution cabinet reaches more than 0.9, but equipment end at each branch road, power factor is still on the low side, has caused power distribution cabinet and equipment room reactive current higher, can not reach the function of local compensation.And traditional capacitance compensation exist following problem.
1, capacitance is bigger than normal, can not be applied in equipment end;
2, the switching rush of current is big, and contactor acts frequently, and reduces useful life;
3, compensation precision is low, and the switching reaction speed is slow.
The utility model content
The utility model technical issues that need to address are, how a kind of terminal Electric capacity compensation device is provided, can local compensation, further improve compensation precision, the electric arc when avoiding switching.
Technical problem of the present utility model solves like this: make up a kind of terminal Electric capacity compensation device, be built in equipment end, comprise a plurality of optional capacitance compensation unit branch road that power-factor measurement module and control switching thereof connect.
According to the terminal Electric capacity compensation device that the utility model provides, described capacitance compensation unit branch road comprises the selector switch that is serially connected on the branch road, and the described selector switch control end on all branch roads connects described power-factor measurement module.
According to the terminal Electric capacity compensation device that the utility model provides, described selector switch is with controllable silicon is in parallel separately, and the described SCR control end on all branch roads connects described power-factor measurement module.
According to the terminal Electric capacity compensation device that the utility model provides, described capacitance compensation unit branch road comprises the fuse that is serially connected on the branch road.
According to the terminal Electric capacity compensation device that the utility model provides, electric capacity is little electric capacity in the described capacitance compensation unit.
The terminal Electric capacity compensation device that the utility model provides, detect by power factor, select the adequate compensation branch road, realize local compensation, switch electric arc when avoiding switching, further adopt that a plurality of little electric capacity are in parallel to be substituted big electric capacity and improve compensation precision in conjunction with the controllable silicon auxiliary switch, can be widely used in equipment end, realize environmental protection and energy saving.
Description of drawings
Further the utility model is elaborated below in conjunction with the drawings and specific embodiments.
Fig. 1 is the terminal Electric capacity compensation device specific embodiment of a utility model theory diagram;
Fig. 2 is a capacitance compensation subcircuits schematic diagram in the terminal Electric capacity compensation device shown in Figure 1.
Embodiment
Referring to Fig. 1, the utility model is responsible for the PFC power-factor measurement controller of measuring equipment terminal voltage and electric current and control switching capacitance group and is formed by the major loop that fuse, controllable silicon module and contactor (selector switch) and capacitance group constitute.Its operation principle is: equipment end connects major loop and PFC power-factor measurement controller.The current signal of the voltage signal of equipment end and inlet wire current instrument transformer calculates current power factor numerical value and compares with the power factor that sets through the processing of PFC power-factor measurement controller.Send the switching that commands for controlling controllable silicon and contactor carry out the capacitor branch road, to reach the purpose of power factor in range of set value.
Referring to Fig. 2, compensate the compensating circuit that branch roads are formed by many groups.The structure of compensation branch road is: fuse (RD), controllable silicon (contactor in parallel of 1KP～nKP) (and 1KM～nKM), little electric capacity connect in regular turn n=1,2,3,4,,,, natural number.Each other end that compensates the fuse of branch road is connected with device switch G, and the other end of switch is connected with equipment end.
Referring to Fig. 2, operation principle of the present utility model is such: PFC power-factor measurement controller, and to measure equipment end is got voltage, the dynamic change of electric current and power factor does not have the arc switching fast to the compensation branch road.The switching mode of compensation branch road is:
When the equipment end reactive power is owed the added time, drop into one group of compensation branch road earlier.Also owe to mend as the reactive power compensation amount, then drop into another group compensation branch road again.The output earlier of PFC power factor drops into signal and gives the silicon control zero-cross handover module, and output drops into signal and gives contactor again, finishes the process that no electric arc drops into.
Spend the added time when the equipment end reactive power, cut out one group of compensation branch road earlier.Also cross benefit as the reactive power compensation amount, then cut out another group compensation branch road again.The output earlier of PFC power factor cuts out signal and gives contactor, and output cuts out signal and gives the silicon control zero-cross handover module again, finishes the process that no electric arc cuts out.
The switching compensation is constantly adjusted, till the power factor of equipment end enters range of set value.
This equipment end dynamic capacitance compensation device, the speed that combining controllable silicon does not have an electric arc switching module cooperates the switching mode of contactor soon, cooperates little electric capacity.Compensation process is finished in dynamically.Compare with traditional capacitance compensation, all improve, be suitable for use in equipment end and carry out dynamic capacitance compensation in compensation speed, precision and fail safe.
The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim scope change and modify, and all should belong to the covering scope of the utility model claim.
Claims (5)
1. a terminal Electric capacity compensation device is built in equipment end, it is characterized in that, comprises a plurality of optional capacitance compensation unit branch road that power-factor measurement module and control switching thereof connect.
2. according to the described terminal Electric capacity compensation device of claim 1, it is characterized in that described capacitance compensation unit branch road comprises the selector switch that is serially connected on the branch road, the described selector switch control end on all branch roads connects described power-factor measurement module.
3. according to the described terminal Electric capacity compensation device of claim 2, it is characterized in that described selector switch is with controllable silicon is in parallel separately, the described SCR control end on all branch roads connects described power-factor measurement module.
4. according to the described terminal Electric capacity compensation device of claim 1, it is characterized in that described capacitance compensation unit branch road comprises the fuse that is serially connected on the branch road.
5. according to the described terminal Electric capacity compensation device of claim 1, it is characterized in that electric capacity is little electric capacity in the described capacitance compensation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202045919U CN201490723U (en) | 2009-09-03 | 2009-09-03 | Terminal capacitance compensating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202045919U CN201490723U (en) | 2009-09-03 | 2009-09-03 | Terminal capacitance compensating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201490723U true CN201490723U (en) | 2010-05-26 |
Family
ID=42429590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202045919U Expired - Fee Related CN201490723U (en) | 2009-09-03 | 2009-09-03 | Terminal capacitance compensating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201490723U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092140A (en) * | 2014-07-14 | 2014-10-08 | 江苏省电力公司张家港市供电公司 | Column type transformer |
| CN112952939A (en) * | 2021-02-08 | 2021-06-11 | 阳光电源股份有限公司 | Series battery pack and capacity balancing method thereof |
-
2009
- 2009-09-03 CN CN2009202045919U patent/CN201490723U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092140A (en) * | 2014-07-14 | 2014-10-08 | 江苏省电力公司张家港市供电公司 | Column type transformer |
| CN112952939A (en) * | 2021-02-08 | 2021-06-11 | 阳光电源股份有限公司 | Series battery pack and capacity balancing method thereof |
| CN112952939B (en) * | 2021-02-08 | 2024-05-14 | 阳光电源股份有限公司 | Series battery pack and capacity balancing method thereof |
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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: 20100526 Termination date: 20110903 |