CN201226456Y - Automatic switchover line for 15KV and less photovoltaic power station and commercial power - Google Patents
Automatic switchover line for 15KV and less photovoltaic power station and commercial power Download PDFInfo
- Publication number
- CN201226456Y CN201226456Y CNU2008200599037U CN200820059903U CN201226456Y CN 201226456 Y CN201226456 Y CN 201226456Y CN U2008200599037 U CNU2008200599037 U CN U2008200599037U CN 200820059903 U CN200820059903 U CN 200820059903U CN 201226456 Y CN201226456 Y CN 201226456Y
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- circuit
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- civil power
- photovoltaic
- output line
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Photovoltaic Devices (AREA)
Abstract
The utility model provides an automatic switch-over circuit for a PV power station of 15KW or below and commercial power, which comprises an air switch QF1 connected with commercial power of AC380V, an air switch connected with PV power of 220V and a power output circuit connected between the QF1 and QF2. The power output circuit comprises a power output line connected between the QF1 and QF2; a commercial power start-up circuit and a commercial power indicating circuit are connected in parallel with the power output line close to the end of the air switch QF1. A PV power automatic enabling circuit and a PV power indicating circuit are connected in parallel with the power output line close to the end of the air switch QF2. The automatic switch-over circuit for a PV power station of 15KW or below and commercial power solves the problem of power supply caused by the instable electric quantity of low-power PV power stations, which takes full advantage of solar on one hand and does not affect the normal power utilization for users on the other hand.
Description
Technical field
The utility model relates to circuit switched, particularly 15KW and following photovoltaic plant and civil power automatic switching line.
Background technology
Solar cell is an electric energy with solar energy converting as emerging clean reproducible energy directly because of having, and the life-span is long, it is simple to safeguard, can realize advantage such as unattended operation and get most of the attention.Solar power supply system has been obtained application more and more widely.
In 15KW in early days and following small-power photovoltaic plant (single-phase 220V) practical application, also be incorporated into the power networks with civil power.Its with load only limit to our station with load.Because the batteries capacity is little, the load Distribution scope is little, tend to take place following two kinds of situations, be that the strong photovoltaic electricity in season of the good illumination of weather toos many or too much for use, and arrived the illumination deficiency or plum rain season photovoltaic electricity not enough, night particularly is because the batteries capacity is little, there is not full charge again, so do not satisfy the need electric weight of load yet.Often can only pulling load.
The utility model content
The purpose of this utility model is to solve the problems referred to above that prior art exists, and a kind of 15KW and following photovoltaic plant and civil power automatic switching line are provided.
The purpose of this utility model is achieved in that a kind of 15KW and following photovoltaic plant and civil power automatic switching line, comprise an air switch QF1 who is electrically connected with the AC380V city, air switch QF2 who is electrically connected with the 220V photovoltaic and one are connected QF1, power output circuit between the QF2, this power output circuit comprises and is connected QF1, power supply output line between the QF2, on power supply output line, be parallel with civil power start-up circuit and civil power indicating circuit, on power supply output line, be parallel with the photovoltaic electricity and drop into circuit and photovoltaic electricity indicating circuit automatically near air switch QF2 one end near air switch QF1 one end;
Each parallel circuits is mainly by two A.C. contactor KM1, KM2, time relay sj and auxiliary relay KA control;
The magnet exciting coil of KM1, SJ and KA is connected on the civil power start-up circuit, and the magnet exciting coil of KM2 is connected the photovoltaic electricity and drops on the circuit automatically;
The auxiliary contact of often opening of KM1 are connected on the civil power indicating circuit, and the main contacts of KM1 is connected on the power supply output line between civil power start-up circuit and the civil power indicating circuit;
The auxiliary contact of often opening of KM2 are connected on the photovoltaic electricity indicating circuit, and the main contacts of KM2 is connected on the automatic power supply output line that drops between circuit and the photovoltaic electricity indicating circuit of photovoltaic electricity;
The timing closing normally opened contact of time relay sj is connected on the civil power start-up circuit;
The normally closed auxiliary contact of auxiliary relay KA is connected the photovoltaic electricity and drops on the circuit automatically.
Described civil power start-up circuit comprises two little circuit that are connected in parallel on respectively on the power supply output line, the magnet exciting coil of one of them timing closing normally opened contact by time relay sj, A.C. contactor KM1 and control insurance RD1 are composed in series, and another is composed in parallel by the magnet exciting coil of time relay sj and the magnet exciting coil of auxiliary relay KA.
Described photovoltaic electricity drops into circuit automatically and is composed in series by the normally closed auxiliary contact of auxiliary relay KA, magnet exciting coil and the control insurance RD2 of A.C. contactor KM2.
Described civil power indicating circuit is in series by the auxiliary contact of often opening of civil power clearing lamp XD1 and A.C. contactor KM1.
Described photovoltaic electricity indicating circuit is in series by the auxiliary contact of often opening of photovoltaic electricity clearing lamp XD2 and A.C. contactor KM2.
The powerup issue that the electric weight instability of small-power photovoltaic plant of having solved the utility model 15KW and following photovoltaic plant and civil power automatic switching line is caused has made full use of solar energy on the one hand, can not influence user's normal electricity consumption on the other hand again.
Description of drawings
Fig. 1 is the circuit diagram of the utility model 15KW and following photovoltaic plant and civil power automatic switching line.
Embodiment
Referring to Fig. 1, the utility model 15KW and following photovoltaic plant and civil power automatic switching line, comprise an air switch QF1 who is electrically connected with the AC380V city, air switch QF2 who is electrically connected with the 220V photovoltaic and one are connected QF1, power output circuit between the QF2, this power output circuit comprises and is connected QF1, power supply output line between the QF2, on power supply output line, be parallel with civil power start-up circuit 1 and civil power indicating circuit 2, on power supply output line, be parallel with the photovoltaic electricity and drop into circuit 3 and photovoltaic electricity indicating circuit 4 automatically near air switch QF2 one end near air switch QF1 one end.
Civil power start-up circuit 1 comprises two little circuit that are connected in parallel on respectively on the power supply output line, the magnet exciting coil of one of them timing closing normally opened contact by time relay sj, A.C. contactor KM1 and control insurance RD1 are composed in series, and another is composed in parallel by the magnet exciting coil of time relay sj and the magnet exciting coil of auxiliary relay KA.
Civil power indicating circuit 2 is in series by the auxiliary contact of often opening of civil power clearing lamp XD1 and A.C. contactor KM1.
The photovoltaic electricity drops into circuit 3 automatically and is composed in series by the normally closed auxiliary contact of auxiliary relay KA, magnet exciting coil and the control insurance RD2 of A.C. contactor KM2.
Photovoltaic electricity indicating circuit 4 is in series by the auxiliary contact of often opening of photovoltaic electricity clearing lamp XD2 and A.C. contactor KM2.
The main contacts of KM1 is connected on the power supply output line between civil power start-up circuit and the civil power indicating circuit;
The main contacts of KM2 is connected on the automatic power supply output line that drops between circuit and the photovoltaic electricity indicating circuit of photovoltaic electricity.
Mainly by two A.C. contactor KM1, KM2, time relay sj and auxiliary relay KA control, its concrete operational mode is each parallel circuits:
The air switch QF1 that closes, the magnet exciting coil excitation of the magnet exciting coil of time relay sj and auxiliary relay KA, the normally closed auxiliary contact of auxiliary relay KA disconnects, and disconnects thereby make the photovoltaic electricity drop into circuit automatically.Closed behind the timing closing normally opened contact process setting value 3s of time relay sj, the magnet exciting coil excitation of A.C. contactor KM1, its main contacts closure, load gets; It often opens the auxiliary contact closure, and corresponding indicator light XD1 is bright, by mains-supplied.
The air switch QF2 that closes gets ready for the photovoltaic electricity as stand-by power supply drops into power supply automatically.If when running into civil power and having a power failure for some reason, the magnet exciting coil loss of excitation of A.C. contactor KM1, its main contacts disconnects, the magnet exciting coil loss of excitation of the magnet exciting coil of synchronous timer SJ and auxiliary relay KA, the normally closed auxiliary contact closure of auxiliary relay KA is connected A.C. contactor KM2 coil magnetization thereby make the photovoltaic electricity drop into circuit automatically, its main contacts closure, load are once more.It often opens the auxiliary contact closure, and corresponding indicator light XD2 is bright.The photovoltaic electricity drops into power supply automatically as standby electricity.Time＜0.5s that electricity drops into automatically from the civil power sudden power to photovoltaic has reached emergent effect according to friend.
When if civil power is sent a telegram here again, SJ, KA once more electronic work, as power supply supply load commonly used, the photovoltaic electricity is again as standby again for civil power.
Claims (6)
1, a kind of 15KW and following photovoltaic plant and civil power automatic switching line is characterized in that:
Comprise an air switch QF1 who is electrically connected with the AC380V city, an air switch QF2 who is electrically connected with the 220V photovoltaic and a power output circuit that is connected between QF1, the QF2, this power output circuit comprises the power supply output line that is connected between QF1, the QF2, on power supply output line, be parallel with civil power start-up circuit and civil power indicating circuit, on power supply output line, be parallel with the photovoltaic electricity and drop into circuit and photovoltaic electricity indicating circuit automatically near air switch QF2 one end near air switch QF1 one end;
Each parallel circuits is mainly by two A.C. contactor KM1, KM2, time relay sj and auxiliary relay KA control;
The magnet exciting coil of KM1, SJ and KA is connected on the civil power start-up circuit, and the magnet exciting coil of KM2 is connected the photovoltaic electricity and drops on the circuit automatically;
The auxiliary contact of often opening of KM1 are connected on the civil power indicating circuit, and the main contacts of KM1 is connected on the power supply output line between civil power start-up circuit and the civil power indicating circuit;
The auxiliary contact of often opening of KM2 are connected on the photovoltaic electricity indicating circuit, and the main contacts of KM2 is connected on the automatic power supply output line that drops between circuit and the photovoltaic electricity indicating circuit of photovoltaic electricity;
The timing closing normally opened contact of time relay sj is connected on the civil power start-up circuit;
The normally closed auxiliary contact of auxiliary relay KA is connected the photovoltaic electricity and drops on the circuit automatically.
2,15KW as claimed in claim 1 and following photovoltaic plant and civil power automatic switching line, it is characterized in that: described civil power start-up circuit comprises two little circuit that are connected in parallel on respectively on the power supply output line, the magnet exciting coil of one of them timing closing normally opened contact by time relay sj, A.C. contactor KM1 and control insurance RD1 are composed in series, and another is composed in parallel by the magnet exciting coil of time relay sj and the magnet exciting coil of auxiliary relay KA.
3,15KW as claimed in claim 1 and following photovoltaic plant and civil power automatic switching line is characterized in that: described photovoltaic electricity drops into circuit automatically and is composed in series by the normally closed auxiliary contact of auxiliary relay KA, magnet exciting coil and the control insurance RD2 of A.C. contactor KM2.
4,15KW as claimed in claim 1 and following photovoltaic plant and civil power automatic switching line is characterized in that: described civil power indicating circuit is in series by the auxiliary contact of often opening of civil power clearing lamp XD1 and A.C. contactor KM1.
5,15KW as claimed in claim 1 and following photovoltaic plant and civil power automatic switching line is characterized in that: described photovoltaic electricity indicating circuit is in series by the auxiliary contact of often opening of photovoltaic electricity clearing lamp XD2 and A.C. contactor KM2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200599037U CN201226456Y (en) | 2008-06-18 | 2008-06-18 | Automatic switchover line for 15KV and less photovoltaic power station and commercial power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200599037U CN201226456Y (en) | 2008-06-18 | 2008-06-18 | Automatic switchover line for 15KV and less photovoltaic power station and commercial power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201226456Y true CN201226456Y (en) | 2009-04-22 |
Family
ID=40599358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200599037U Expired - Fee Related CN201226456Y (en) | 2008-06-18 | 2008-06-18 | Automatic switchover line for 15KV and less photovoltaic power station and commercial power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201226456Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448715A (en) * | 2018-05-21 | 2018-08-24 | 沧州市供水排水集团有限公司 | A kind of alternating current and solar energy dual power supply automatic switching device |
-
2008
- 2008-06-18 CN CNU2008200599037U patent/CN201226456Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448715A (en) * | 2018-05-21 | 2018-08-24 | 沧州市供水排水集团有限公司 | A kind of alternating current and solar energy dual power supply automatic switching device |
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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: 20090422 Termination date: 20110618 |