CN203312827U - Photovoltaic power station energy-saving circuit - Google Patents
Photovoltaic power station energy-saving circuit Download PDFInfo
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- CN203312827U CN203312827U CN2013202614776U CN201320261477U CN203312827U CN 203312827 U CN203312827 U CN 203312827U CN 2013202614776 U CN2013202614776 U CN 2013202614776U CN 201320261477 U CN201320261477 U CN 201320261477U CN 203312827 U CN203312827 U CN 203312827U
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- inverter
- relay
- circuit breaker
- switch
- live wire
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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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Abstract
The utility model relates to a photovoltaic power station energy-saving circuit. The photovoltaic power station energy-saving circuit comprises an inverter, a first relay, a second relay, circuit breakers, a first switch, a second switch and a change-over switch, wherein a normally open contact of the inverter and the first relay are connected in series between a live wire and a neutral wire; a normally closed contact of the inverter and the second relay are connected in series between the live wire and the neutral wire; a second connecting end of the change-over switch, a normally open contact of the first relay, a first normally closed contact of a circuit breaker and a closing coil of a circuit breaker are sequentially connected in series between the live wire and the neutral wire; and a third connecting end of the change-over switch, a normally open contact of the second relay, a first normally open contact of a circuit breaker and a closing coil are sequentially connected in series between the live wire and the neutral wire. The photovoltaic power station energy-saving circuit can help to reduce unnecessary energy waste and to prolong the service life of an auxiliary transformer.
Description
Technical field
The utility model relates to a kind of photovoltaic plant inverter and auxiliary transformer energy-saving protective technology, particularly a kind of photovoltaic plant energy-saving circuit.
Background technology
Inverter claims again feed regulator isolator, the purposes according to inverter in photovoltaic generating system can be divided into the self power supply with and two kinds of grid-connected use.According to the waveform modulated mode, can be divided into square-wave inverter, ladder inverter, sinewave inverter and Three-Phase Inverter again.For the inverter for grid-connected system, according to there being transless can be divided into again outside inverter tyre auxiliary transformer and inverter without auxiliary transformer.
Because the AC output voltage of current inverter product is all inconsistent, and the ac output voltage of inverter can't meet grid-connected condition sometimes, occurred that therefore the situation of photovoltaic DC-to-AC converter band auxiliary transformer is instead given birth to.The form of photovoltaic DC-to-AC converter band auxiliary transformer is to be raised to and can to carry out the grid-connected optimum voltage of photovoltaic system and design by transformer for the alternating voltage by inverter output.
Grid-connected type inverter has following several function (including but not limited to this):
Automatically operation and stopping function, maximal power tracing are controlled function, anti-island protect, automatic voltage adjustment function, direct current measuring ability, DC earthing measuring ability etc.
The patent of this Energy Saving Control defencive function is concerning the automatic operation and stopping function of inverter.
Automatically move and stopping function: after sunrise in morning, intensity of solar radiation strengthens gradually, and the output of solar cell also increases thereupon, and after reaching the required power output of inverter work, inverter namely brings into operation automatically.After entering operation, inverter just at every moment monitors the output of solar module, as long as the power output of solar module is greater than the required power output of inverter work, inverter is with regard to continuous service; Until the sunset shutdown, even overcast and rainy inverter also can move.When solar module output diminishes, inverter was exported near 0 o'clock, and inverter just forms holding state.
From top we can find out; if this automatic operation and stopping function are only outer without auxiliary transformer for inverter; this inverter enters the shutdown resting state after carrying out night; inverter internal communication side switch is from consumer networks side excision, and DC-to-AC converter inside reduces the wastage when not working, energy-conservation characteristics thereby reach.While if change into, being inverter tyre auxiliary transformer; when inverter is shut down dormancy; there are not the cooperation of linkage in auxiliary transformer and inverter; auxiliary transformer now, still is connected with electrical network and this transformer enters the no-load running state not from electrical network, excising in the grid-connected side of consumer networks.Now also in operation, therefore can in inverter standby at night sleep procedure, consume certain user's side electrical network electric weight, this situation has just produced unnecessary energy waste to auxiliary transformer.And this auxiliary transformer to be equivalent to every day be continuous operation basically, so also can greatly have influence on the life-span of this auxiliary transformer.
The utility model content
Technical problem to be solved in the utility model be to provide a kind of can be energy-conservation and extend the auxiliary transformer photovoltaic plant energy-saving circuit in useful life.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of photovoltaic plant energy-saving circuit comprises inverter, the first relay, the second relay, circuit breaker, the first switch, second switch and change over switch;
The normally opened contact of described inverter and described the first relay are series between the live wire and zero line of AC network, the normally-closed contact of described inverter and described the second relay are series between the live wire and zero line of AC network, after the first link of described change over switch and the first switch series connection with between the tie point of the first normally-closed contact of circuit breaker and breaker closing coil, be connected, the second link of described change over switch and the normally opened contact of the first relay, the first normally-closed contact of circuit breaker and the closing coil of circuit breaker are series between live wire and zero line successively, the 3rd link of described change over switch and the normally opened contact of the second relay, the first normally opened contact of circuit breaker and the switching winding of circuit breaker are successively between series connection and live wire and zero line, after the series connection of the 4th link of described change over switch and second switch with between the tie point of the first normally opened contact of circuit breaker and breaker open operation coil, be connected.
The beneficial effects of the utility model are: utilize the photovoltaic plant energy-saving circuit can make when inverter is shut down dormancy; its auxiliary transformer also can be shut down the generation of resting state and be entered run-stopping status by inverter; when inverter starts commencement of commercial operation by day; transformer also can drop into along with the operation of inverter in normal power generation work, finally realizes energy-conservation and extends the auxiliary transformer life-span.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, the ac output end of described inverter is connected with the input of described auxiliary transformer.The output of described auxiliary transformer is communicated with user's side electrical network.Described energy-saving circuit also is connected with fuse before the access live wire.
The accompanying drawing explanation
Fig. 1 is the utility model circuit diagram.
In accompanying drawing, the list of parts of each label representative is as follows:
1, inverter, 2, the normally opened contact of inverter, 3, the normally-closed contact of inverter, 4, the first relay, 5, the second relay, 6, change over switch, 7, the first switch, 8, the normally opened contact of the first relay, 9, the normally opened contact of the second relay, 10, second switch, 11, the first normally-closed contact of circuit breaker, 12, the first normally opened contact of circuit breaker, 13, the closing coil of circuit breaker, 14, the switching winding of circuit breaker, 15, the second normally opened contact of circuit breaker, 16, the second normally-closed contact of circuit breaker, 17, the energy storage coil of circuit breaker, 18, the first link, 19, the second link, 20, the first link, 21, the second link, HR, the first indicator light, HW, the second indicator light, FU, fuse.
Embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only be used to explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, be the utility model circuit diagram.
Embodiment 1
A kind of photovoltaic plant energy-saving circuit, comprise inverter 1, the first relay 4, the second relays 5, circuit breaker, the first switch 7, second switch 10 and change over switch 6;
The normally opened contact 2 of described inverter and described the first relay 4 are series between the live wire and zero line of AC network, the normally-closed contact 3 of described inverter and described the second relay 5 are series between the live wire and zero line of AC network, after the first link 18 of described change over switch 6 and the first switch 7 series connection with between the tie point of the first normally-closed contact 11 of circuit breaker and breaker closing coil, be connected, the second link of described change over switch 6 and the normally opened contact 8 of 19 first relays, the first normally-closed contact 11 of circuit breaker and the closing coil 13 of circuit breaker are series between live wire and zero line successively, the 3rd link 20 of described change over switch 6 and the normally opened contact 9 of the second relay, the first normally opened contact 12 of circuit breaker and the switching winding 14 of circuit breaker are successively between series connection and live wire and zero line, after 10 series connection of the 4th link 21 of described change over switch 6 and second switch with between the tie point of the first normally opened contact 12 of circuit breaker and breaker open operation coil, be connected.
The ac output end of described inverter 1 is connected with the input of described auxiliary transformer.The output of described auxiliary transformer is communicated with user's side electrical network.
Described energy-saving circuit also is connected with fuse FU before the access live wire.The second normally opened contact 15 of described circuit breaker be connected between live wire and zero line after the first indicator light HR connects, the normally-closed contact 16 of described circuit breaker be connected between live wire and zero line after the second indicator light HW connects, described breaker energy storage coil 17 is connected between live wire and zero line.
Operation principle: 1, when inverter enters normal operation, normally opened contact 2 closures of inverter, the normally-closed contact 3 of inverter disconnects, the first relay 4 is charged, normally opened contact 8 closures of the first relay, auxiliary first normally-closed contact 11 closures of circuit breaker, breaker closing coil 13 is charged, breaker closing, the AC network of connection auxiliary transformer output, start generating work.
2, when inverter enters dormancy; the normally opened contact 2 of inverter disconnects; normally-closed contact 3 closures of inverter, the second relay 5 is charged, normally opened contact 9 closures of the second relay; auxiliary first normally opened contact 12 closures of circuit breaker; breaker open operation coil 14 is charged, breaker open operation, the AC network of disconnection auxiliary transformer output; auxiliary transformer enters stopped status when the inverter dormancy thereupon, shuts down energy-conservation scheme thereby reach auxiliary transformer when the inverter dormancy.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (4)
1. a photovoltaic plant energy-saving circuit, is characterized in that: comprise inverter (1), the first relay (4), the second relay (5), circuit breaker, the first switch (7), second switch (10) and change over switch (6);
The normally opened contact of described inverter (2) and described the first relay (4) are series between the live wire and zero line of AC network, the normally-closed contact of described inverter (3) and described the second relay (5) are series between the live wire and zero line of AC network, after the series connection of first link (18) of described change over switch (6) and the first switch (7) with between the tie point of first normally-closed contact (11) of circuit breaker and breaker closing coil, be connected, second link (19) of described change over switch (6) and the normally opened contact (8) of the first relay, first normally-closed contact (11) of circuit breaker and the closing coil (13) of circuit breaker are series between live wire and zero line successively, the 3rd link (20) of described change over switch (6) and the normally opened contact (9) of the second relay, first normally opened contact (12) of circuit breaker and the switching winding (14) of circuit breaker are successively between series connection and live wire and zero line, after the series connection of the 4th link (21) of described change over switch (6) and second switch (10) with between the tie point of first normally opened contact (12) of circuit breaker and breaker open operation coil, be connected.
2. photovoltaic plant energy-saving circuit according to claim 1, it is characterized in that: the ac output end of described inverter (1) is connected with the input of described auxiliary transformer.
3. photovoltaic plant energy-saving circuit according to claim 2, it is characterized in that: the output of described auxiliary transformer is communicated with user's side electrical network.
4. according to the arbitrary described photovoltaic plant energy-saving circuit of claims 1 to 3, it is characterized in that: described energy-saving circuit also is connected with fuse (FU) before the access live wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202614776U CN203312827U (en) | 2013-05-14 | 2013-05-14 | Photovoltaic power station energy-saving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202614776U CN203312827U (en) | 2013-05-14 | 2013-05-14 | Photovoltaic power station energy-saving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203312827U true CN203312827U (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202614776U Expired - Lifetime CN203312827U (en) | 2013-05-14 | 2013-05-14 | Photovoltaic power station energy-saving circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048627A (en) * | 2014-12-08 | 2015-11-11 | 银凯特（山东）新能源装备有限公司 | System and method for controlling energy saving in photovoltaic power station |
| CN106257791A (en) * | 2016-06-25 | 2016-12-28 | 六盘水金星机电设备有限公司 | A kind of remote alarms reactive-load compensation equipment |
| CN107147218A (en) * | 2017-04-12 | 2017-09-08 | 深圳市沃特玛电池有限公司 | Energy-accumulating power station |
-
2013
- 2013-05-14 CN CN2013202614776U patent/CN203312827U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048627A (en) * | 2014-12-08 | 2015-11-11 | 银凯特（山东）新能源装备有限公司 | System and method for controlling energy saving in photovoltaic power station |
| CN105048627B (en) * | 2014-12-08 | 2016-08-24 | 威海银凯特电气工程有限公司 | Photovoltaic plant energy-saving control system and method |
| CN106257791A (en) * | 2016-06-25 | 2016-12-28 | 六盘水金星机电设备有限公司 | A kind of remote alarms reactive-load compensation equipment |
| CN107147218A (en) * | 2017-04-12 | 2017-09-08 | 深圳市沃特玛电池有限公司 | Energy-accumulating power station |
| CN107147218B (en) * | 2017-04-12 | 2018-07-24 | 深圳市沃特玛电池有限公司 | Energy-accumulating power station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Main building-1802, Nankai science and technology building, No. 20, Kaihua Road, Huayuan Industrial Zone, hi tech Zone, Binhai New Area, Tianjin Patentee after: Tianjin Xingchuan photoelectric Co.,Ltd. Address before: 300450 Tianjin city Tanggu District Road No. 20 Huayuan Industrial Zone, Nankai main building room 1801 Patentee before: ZTE ENERGY LUMINOUS ENERGY TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200922 Address after: Kunshan Industrial Park Enterprise Incubation Center 845350 the Xinjiang Uygur Autonomous Region autonomous Kezilesukeerkezi Atux city 5 floor Patentee after: XINJIANG ZTE ENERGY CO.,LTD. Address before: Main building-1802, Nankai science and technology building, No. 20, Kaihua Road, Huayuan Industrial Zone, hi tech Zone, Binhai New Area, Tianjin Patentee before: Tianjin Xingchuan photoelectric Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |
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| CX01 | Expiry of patent term |