CN101951192B - Time synchronization control system of off-grid photovoltaic power system - Google Patents
Time synchronization control system of off-grid photovoltaic power system Download PDFInfo
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Abstract
The invention discloses a time synchronization control system of an off-grid photovoltaic power system, which comprises a time receiving circuit, a clock correction computation control circuit and an off-grid system drive control circuit, wherein the time receiving circuit has a receiving antenna, receives a radio standard time signal transmitted by a radio time launcher and sends the received signal to the clock correction computation control circuit; the clock correction computation control circuit is used for filtering and analyzing the standard time signal, comparing the standard time signal with an actual clock signal of the photovoltaic power system, correcting the actual clock signal and sending the corrected clock signal to the off-grid system drive control circuit; and the off-grid system drive control circuit is connected with at least two off-grid photovoltaic power systems and drives all the off-grid photovoltaic power systems according to the received corrected clock signal, so that all the off-grid photovoltaic power systems are kept synchronous. When the embodiment of the invention is used, the precise control over the time synchronization of the off-grid photovoltaic power systems is realized, and the construction cost of a project can be reduced.
Description
Technical field
The present invention relates to the synchronous control technique field, particularly relate to a kind of time synchronization control system from the net photovoltaic generating system.
Background technology
In the area that does not have electrical network, can adopt solar module to send direct current, be filled with storage battery for electrical appliance through solar charging controller, be called from the net photovoltaic generating system.Common has two kinds from the net photovoltaic generating system: the one, and direct current is from the net photovoltaic generating system, and the direct current of its storage battery can directly be supplied with the uses such as direct-flow current consumer; The 2nd, exchange from the net photovoltaic generating system, its storage battery is connected to from the net inverter, the direct current of storage battery is converted to the electrical energy parameter of AC electric appliance use, for electrical appliance.Now, from the net photovoltaic generating system with its flexibly, reliably characteristic has satisfied grassland, desert, island etc. away from the need for electricity of the family in the area of electrical network, community etc., has obtained preferably effect.
In the prior art, can adopt GPS (Global Position System, global positioning system) realization from the Synchronization Control of net photovoltaic generating system.Concrete, adopt gps receiver to receive the time signal of satellite as the control system of chronometer time.Adopt this method can guarantee that synchronous accuracy is higher, its error can be controlled at positive and negative 0.0012 second.
But the inventor finds in research process, and the existing method that adopts GPS need to all be installed a cover GPS control circuit, so that project cost is higher on every equipment.Simultaneously, when the existence of equipment top is blocked, can affect the reception of satellite time transfer signal, cause the accuracy of Synchronization Control to reduce.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of time synchronization control system from the net photovoltaic generating system, can realize the accurate control from the time synchronized of net photovoltaic generating system, and can reduce project cost.
The embodiment of the invention provides a kind of time synchronization control system from the net photovoltaic generating system, and described system comprises: time service receiving circuit, clock alignment arithmetic control circuit, off-grid system Drive and Control Circuit;
Described time service receiving circuit has reception antenna, is used for receiving the radio standard time signal of radio time service transmitting station emission, is sent to described clock alignment arithmetic control circuit;
Described clock alignment arithmetic control circuit, be used for described standard time signal is carried out filter analysis, the actual clock signal of described standard time signal and photovoltaic generating system is compared, described actual clock signal is calibrated, the clock signal after the calibration is sent to described off-grid system Drive and Control Circuit;
Described off-grid system Drive and Control Circuit is connected to few two-way from the net photovoltaic generating system, is used for driving each road from the net photovoltaic generating system according to the clock signal after the described calibration that receives, so that each road keeps synchronously from the net photovoltaic generating system.
Preferably, described time service receiving circuit receive frequency section is 68.5KHZ.
Preferably, described time service receiving circuit comprises:
Reception antenna connects an end of the first electric capacity, and the other end of described the first electric capacity connects the 4th port by the second electric capacity; The first inductance in parallel is at the second electric capacity two ends; The common port of the first electric capacity and the second electric capacity connects the 3rd port through the 3rd electric capacity, an end of public termination the 4th electric capacity of the first electric capacity and the second electric capacity, an end of the first resistance and an end of the second resistance;
The other end of the 4th electric capacity is through the 3rd magnetic core inductance and the 8th capacity earth; Another termination of the first resistance connects the second port through the 5th electric capacity; The other end ground connection of the second resistance; The collector electrode of public termination first triode of the first resistance and the second resistance; The base stage of the first transistor is through the 3rd grounding through resistance, and emitter connects an end of the anode of the first diode and the 6th electric capacity, the 11 electric capacity; The negative electrode of the first diode connects the first port, and anode is through the second magnetic core inductance and the 7th capacity earth;
The other end of the 6th electric capacity connects the negative electrode of the second diode through the 9th electric capacity; The tenth electric capacity and the 4th inductance are respectively and be connected in the 6th electric capacity and the 9th electric capacity two ends; The anode of the second diode connects+the 5V power supply;
One end of the 12 electric capacity and one termination of the 4th resistance+5V power supply; The other end ground connection of the 12 electric capacity; The other end of the 4th resistance connects the base stage of the second triode through the 5th resistance; The grounded collector of the second triode, the emitter of the second triode connects the emitter of the first triode; The 11 electric capacity is connected between the collector and emitter of the second triode;
The 13 electric capacity is connected between the common port and ground of the 4th resistance and the 5th resistance;
The emitter of the second triode is through the 6th resistance, the 14 electric capacity, the 15 capacity earth; The 5th inductance is connected between the base stage of the common port of the 14 electric capacity and the 15 electric capacity and the second triode; The 16 electric capacity is connected between the collector electrode and ground of the second triode.
Preferably, described clock alignment arithmetic control circuit comprises multivibrator, modulator-demodulator, clock circuit;
Described modulator-demodulator is used for the radio standard time signal that receives is judged, filtered and analyzes, and is sent to multivibrator;
Described multivibrator is used for extracting from described clock circuit the actual clock signal of photovoltaic generating system, described actual clock signal is compared with the standard time signal that receives, described actual clock signal is calibrated, and the clock signal after will calibrating is sent to the off-grid system Drive and Control Circuit;
Described clock circuit is used for storing the actual clock signal of photovoltaic generating system.
Preferably, described multivibrator adopts 555 timers and its peripheral circuit to consist of; Described modulator-demodulator adopts C192 chip and its peripheral circuit to consist of; Described clock circuit adopts CD4028 chip and its peripheral circuit to consist of.
Preferably, described off-grid system Drive and Control Circuit comprises at least two-way control branch road, and every road control branch road is used for driving a cover from the net photovoltaic generating system;
Each road control branch structure is identical, links to each other by series resistance between the adjacent two-way control branch road.
Preferably, described control branch road comprises:
The negative electrode of the first optocoupler VLC1 is through three nine-day periods after the winter solstice grounding through resistance, and collector electrode connects+the 5V power supply, and emitter connects an end of the three or eight resistance, the anode of the three or three diode, the collector electrode of the three or four triode; The first output of another termination clock alignment arithmetic control circuit of the three or eight resistance; The negative electrode of the three or three diode connects the second output of clock alignment arithmetic control circuit;
The base stage of the three or four triode connects the three or five transistor emitter; The base stage of the three or five triode connects the 3rd output of clock alignment arithmetic control circuit; The emitter of the three or five triode connects the base stage of the three or three triode through pseudo-ginseng resistance; The emitter of the three or three triode is successively through the three or three resistance and the three or four grounding through resistance, and the collector electrode of the three or three triode and the collector electrode of the three or two triode together connect+the 5V power supply;
The base stage of the three or two triode connects the emitter of the three or four triode through the three or six resistance, the emitter of the three or two triode connects the base stage of the 31 triode; The emitter of the 31 triode is through the three or two grounding through resistance, and the collector electrode of the 31 triode connects the base stage of the three or six triode through the 31 resistance;
The collector electrode of the three or six triode connects the collector electrode of pseudo-ginseng triode; The emitter of pseudo-ginseng triode is through the three or five grounding through resistance; The negative electrode of the 31 diode connects the emitter of the three or six triode, and anode connects the collector electrode of the three or six triode; The negative electrode of the three or two diode connects the collector electrode of pseudo-ginseng triode, and anode connects the emitter of pseudo-ginseng triode;
The anode of the second optocoupler connects the emitter of pseudo-ginseng triode and the common port of the three or five resistance, minus earth;
The collector electrode short circuit of the anode of the first optocoupler and the second optocoupler is as the first output of this control branch road; The emitter of the second optocoupler is as the second output of this control branch road.
Preferably, when the control branch road is two-way, connect by series resistance between the first control branch road and the second control branch road;
The collector electrode and second that described series resistance is connected on the three or six triode of the first control branch road controls between the collector electrode of the three or six triode of branch road; The emitter of the three or six triode of the first control branch road connects the emitter of the three or six triode of the second control branch road; The collector electrode of the three or five triode of the first control branch road connects the collector electrode of the three or four triode of the second control branch road; The collector electrode of the three or four triode of the first control branch road connects the collector electrode of the three or five triode of the second control branch road.
According to specific embodiment provided by the invention, the invention discloses following technique effect:
The standard time signal that utilization country of the described system of embodiment of the invention time service center sends carries out Synchronization Control to multichannel from the net photovoltaic generating system.Described system receives the radio standard time signal of Chinese time service center emission, by described standard time signal the actual clock signal from the net photovoltaic generating system is calibrated, so that each road can both keep high level of synchronization with described standard time signal from the clock signal of net photovoltaic generating system, thereby so that realize the Synchronization Control of photovoltaic generating system and the synchronous detection of flow from the identical setting program of each control unit startup of net photovoltaic generating system on each road.
Because this standard time signal is take one second cesium-beam atomic clock of 100,000 years Chinese Industrial Standards (CIS) time error as benchmark, precision is higher, thereby can guarantee from the synchronism of net photovoltaic generating system high.Simultaneously, described system installation, easy to use, the ability of anti-external interference is stronger.
Description of drawings
Fig. 1 is the time synchronization control system structure chart from the net photovoltaic generating system of the embodiment of the invention;
Fig. 2 is the time service receiving circuit figure of the embodiment of the invention;
Fig. 3 is the clock alignment arithmetic control circuit figure of the embodiment of the invention one;
Fig. 4 is the clock alignment arithmetic control circuit figure of the embodiment of the invention two;
Fig. 5 is the off-grid system Drive and Control Circuit figure of the embodiment of the invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
In view of this, the object of the present invention is to provide a kind of time synchronization control system from the net photovoltaic generating system, can realize the accurate control from the time synchronized of net photovoltaic generating system, and can reduce project cost.
The embodiment of the invention is that the time signal of utilizing national time service center to send is carried out from the Synchronization Control of net photovoltaic generating system equipment, is the synchronous working control that the synchronism of utilizing the time is carried out the photovoltaic product of multi-point.Country is responsible for determining and keeping the atomic time TA of system (CSAO) and the Coordinated Universal Time(UTC) UTC (NTSC) of China in the time service center.It is to be realized by accurate comparison and calculating by one group of high accuracy cesium-beam atomic clock, and interrelates than reciprocity means and IAT standard by GPS common-view mode, satellite transmitted in both directions Comparison Method (TWSTFT).The stability at country time service center is 10E-14, and its accuracy is 10E-13.
The time service center that is distributed in the every country area utilizes cesium-beam atomic clock as fiducial time, adopts the wireless time signal of radio wave transmissions.Its time signal in the country variant area with Greenwich Mean Time or other countries' zone time.China sets up respectively national time service center in Shangqiu and Xi'an.
System of the present invention utilizes receiver to receive the long wave standard signal of the radio time service transmitting station emission at national time service center, the radio standard time signal that receives is mediated, amplifies, driven rear to carry out accurate time control from the net photovoltaic generating system.
System of the present invention is as long as just can be convenient to use under the environment that can receive radio signals, and this system is without any operating cost, and its time service precision is delicate (microsecond) magnitude.System of the present invention is simple and reliable, and is with low cost, and because this system only works in specific frequency range, so have stronger interference free performance, is fit to the large tracts of land dispersion from the time synchronized control of net photovoltaic generating system.
With reference to Fig. 1, be the time synchronization control system structure chart from the net photovoltaic generating system of the embodiment of the invention.Described system comprises: time service receiving circuit 10, clock alignment arithmetic control circuit 20, off-grid system Drive and Control Circuit 30.
Described time service receiving circuit 10 has reception antenna, is used for receiving the radio standard time signal of radio time service transmitting station emission, is sent to described clock alignment arithmetic control circuit 20.
Described clock alignment arithmetic control circuit 20, be used for described standard time signal is carried out filter analysis, with described standard time signal with from the actual clock signal of net photovoltaic generating system relatively, described actual clock signal is calibrated, the clock signal after the calibration is sent to described off-grid system Drive and Control Circuit 30.
Described off-grid system Drive and Control Circuit 30 is connected to few two-way from the net photovoltaic generating system, is used for driving each road from the net photovoltaic generating system according to the clock signal after the described calibration that receives, so that each road keeps synchronously from the net photovoltaic generating system.
The standard time signal that utilization country of the described system of embodiment of the invention time service center sends carries out Synchronization Control to multichannel from the net photovoltaic generating system.Described system receives the radio standard time signal of Chinese time service center emission, by described standard time signal the actual clock signal from the net photovoltaic generating system is calibrated, so that each road can both keep high level of synchronization with described standard time signal from the clock signal of net photovoltaic generating system, thereby so that realize the Synchronization Control of photovoltaic generating system and the synchronous detection of flow from the identical setting program of each control unit startup of net photovoltaic generating system on each road.
Because this standard time signal is take one second cesium-beam atomic clock of 100,000 years Chinese Industrial Standards (CIS) time error as benchmark, precision is higher, thereby can guarantee from the synchronism of net photovoltaic generating system highly, and it is true, accurately that it detects the action of control data.Simultaneously, system of the present invention installation, easy to use can be applied under the various conditions of work, and the ability that anti-extraneous factor is disturbed is stronger.
With reference to Fig. 2, be the time service receiving circuit figure of the embodiment of the invention.Described time service receiving circuit 10 can be long wave low frequency receiver, and its frequency band that receives is 68.5KHZ.
As shown in Figure 2, described time service receiving circuit 10 can comprise:
Reception antenna T connects an end of the first capacitor C 1, and the other end of described the first capacitor C 1 meets the 4th port D by the second capacitor C 2; The first inductance L 1 is connected in parallel on the second capacitor C 2 two ends; The common port of the first capacitor C 1 and the second capacitor C 2 meets the 3rd port C through the 3rd capacitor C 3, an end of public termination the 4th capacitor C 4 of the first capacitor C 1 and the second capacitor C 2, an end of the first resistance R 1 and an end of the second resistance R 2.
The other end of the 4th capacitor C 4 is through the 3rd magnetic core inductance L 3 and the 8th capacitor C 8 ground connection; Another termination of the first resistance R 1 meets the second port B through the 5th capacitor C 5; The other end ground connection of the second resistance R 2; The collector electrode of the public termination first triode N1 of the first resistance R 1 and the second resistance R 2; The base stage of the first transistor N1 is through the 3rd resistance R 3 ground connection, and emitter connects an end of the anode of the first diode D1 and the 6th capacitor C 6, the 11 capacitor C 11; The negative electrode of the first diode D1 meets the first port A, and anode is through the second magnetic core inductance L 2 and the 7th capacitor C 7 ground connection.
The other end of the 6th capacitor C 6 connects the negative electrode of the second diode D2 through the 9th electric capacity; The tenth capacitor C 10 and the 4th inductance L 4 are respectively and be connected in the 6th capacitor C 6 and the 9th capacitor C 9 two ends; The anode of the second diode D2 connects+the 5V power supply;
One end of the 12 capacitor C 12 and one termination of the 4th resistance R 4+5V power supply; The other end ground connection of the 12 capacitor C 12; The other end of the 4th resistance R 4 connects the base stage of the second triode N2 through the 5th resistance R 5; The grounded collector of the second triode N2, the emitter of the second triode N2 connects the emitter of the first triode N1; The 11 capacitor C 11 is connected between the collector and emitter of the second triode N2;
The 13 capacitor C 13 is connected between the common port and ground of the 4th resistance R 4 and the 5th resistance R 5;
The emitter of the second triode N2 is through the 6th resistance R 6, the 14 capacitor C 14, the 15 capacitor C 15 ground connection; The 5th inductance L 5 is connected between the base stage of the common port of the 14 capacitor C 14 and the 15 capacitor C 15 and the second triode N2; The 16 capacitor C 16 is connected between the collector electrode and ground of the second triode N2.
With reference to Fig. 3, be the clock alignment arithmetic control circuit figure of the embodiment of the invention one.Described clock alignment arithmetic control circuit 20 comprises multivibrator 201, modulator-demodulator 202, clock circuit 203.
Described modulator-demodulator 202 is used for receiving the radio standard time signal that time service receiving circuit 10 sends, and the described standard time signal that receives is judged, filtered and analyzes, and is sent to multivibrator 201;
Described multivibrator 201 is used for extracting from described clock circuit 203 the actual clock signal of photovoltaic generating system, described actual clock signal is compared with the radio standard time signal that receives, described actual clock signal is calibrated, and the clock signal after will calibrating is sent to off-grid system Drive and Control Circuit 30.
Described clock circuit 203 is used for storing the actual clock signal of photovoltaic generating system.
With reference to Fig. 4, be the clock alignment arithmetic control circuit figure of the embodiment of the invention two.Circuit shown in Figure 4 has provided a kind of concrete execution mode of clock alignment arithmetic control circuit, but in other embodiments of the invention, described circuit can also adopt other concrete modes to realize.
Described multivibrator 201 is made of 555 timers and its peripheral circuit.Described modulator-demodulator 202 adopts C192 chip and its peripheral circuit to realize.Described clock circuit 203 adopts CD4028 chip and its peripheral circuit to realize.
As shown in Figure 4, described C192 chip links to each other with the first port A, the second port B, the 3rd port C, the 4th port D of time service receiving circuit 10, is used for receiving the radio standard time signal.
With reference to Fig. 5, be the off-grid system Drive and Control Circuit figure of the embodiment of the invention.Described off-grid system Drive and Control Circuit 30 can comprise multichannel control branch road, and every road control branch road is used for driving a cover from the net photovoltaic generating system.
Describe as an example of two-way control branch road example in the circuit shown in Figure 5.In other embodiments of the invention, can comprise multichannel.The structure of each road control branch road is identical, links to each other by series resistance between the adjacent two-way control branch road.
Describe as example take one tunnel control branch road wherein.Described control branch road comprises:
The negative electrode of the first optocoupler VLC1 (diagram port 2) is by three nine-day periods after the winter solstice resistance R 39 ground connection, collector electrode (diagram port one 6) connects+the 5V power supply, and emitter (diagram port one 5) connects an end of the three or eight resistance R 38, the base stage of the three or three diode D33, the collector electrode of the three or four triode N34; The first output G of another termination clock alignment arithmetic control circuit of the three or eight resistance R 38; The negative electrode of the three or three diode D33 meets the second output F of clock alignment arithmetic control circuit;
The base stage of the three or four triode N34 connects the three or five triode N35 emitter; The base stage of the three or five triode N35 meets the 3rd output E of clock alignment arithmetic control circuit; The emitter of the three or five triode N35 connects the base stage of the three or three triode N33 through pseudo-ginseng resistance R 37; The emitter of the three or three triode N33 is successively through the three or three resistance R 33 and the three or four resistance R 34 ground connection, and the collector electrode of the three or three triode N33 and the collector electrode of the three or two triode N32 together connect+the 5V power supply;
The base stage of the three or two triode N32 connects the emitter of the three or four triode N34 through the three or six resistance R 36, the emitter of the three or two triode N32 connects the base stage of the 31 triode N31; The emitter of the 31 triode N31 is through the three or two resistance R 32 ground connection, and the collector electrode of the 31 triode R31 connects the base stage of the three or six triode N36 through the 31 resistance R 31;
The collector electrode of the three or six triode N36 connects the collector electrode of pseudo-ginseng triode N37; The emitter of pseudo-ginseng triode N37 is through the three or five resistance R 35 ground connection; The negative electrode of the 31 diode D31 connects the emitter of the three or six triode N36, and anode connects the collector electrode of the three or six triode N36; The negative electrode of the three or two diode D32 connects the collector electrode of pseudo-ginseng triode N37, and anode connects the emitter of pseudo-ginseng triode N37;
The anode of the second optocoupler VLC2 (diagram port 3) connects the emitter of pseudo-ginseng triode N37 and the common port of the three or five resistance R 35, negative electrode (diagram port 4) ground connection;
The collector electrode of the anode of the first optocoupler VLC1 (diagram port one) and the second optocoupler VLC2 (diagram port one 4) short circuit is as the first output of this control branch road; The emitter of the second optocoupler VLC2 (diagram port one 3) is as the second output of this control branch road.
The first output of described control branch road and the second output are used for connecing from the net photovoltaic generating system, and the clock signal after being used for calibrating exports to from the net photovoltaic generating system.
Each is controlled between the branch road and connects by series resistance.As shown in Figure 5, connect by series resistance R0 between the first control branch road and the second control branch road.Concrete, the collector electrode and second that series resistance R0 is connected on the three or six triode N36 of the first control branch road controls between the collector electrode of the three or six triode N36 of branch road; The emitter of the three or six triode N36 of the first control branch road connects the emitter of the three or six triode N36 of the second control branch road; The collector electrode of the three or five triode N35 of the first control branch road connects the collector electrode of the three or four triode N34 of the second control branch road; The collector electrode of the three or four triode N34 of the first control branch road connects the collector electrode of the three or five triode N35 of the second control branch road.
The utilization of the described system of the embodiment of the invention is arranged on the standard time signal of the time service center transmission in Shangqiu or Xi'an and realizes the Synchronization Control from the net photovoltaic generating system.Described standard time signal sends with the low-frequency radio signal of long wave.The transmitter that is arranged on the time service center in Shangqiu or Xi'an is the solid-state low-frequency time-code transmitter of 100Kw, has transmitting antenna steel tower and antenna counterpoise system, and its tranmitting frequency is 68.5KHz.The radio-transmitting station at the time service center in Shangqiu and Xi'an can be realized the full covering in the Chinese national boundary scope.
For time service center, Shangqiu, the effective coverage range of its time signal is 2500KM, when system of the present invention is in effective range of receiving at time service center, Shangqiu, can directly receive the radio standard time signal of its emission.Exceeded the coverage at time service center, Shangqiu when system of the present invention, time service receiving circuit 10 will automatically switch to time service center, Xi'an.When system of the present invention has exceeded Chinese national boundary scope and uses, time service receiving circuit 10 will automatically switch to the Greenwich Mean Time time service center that is distributed in every country, so that system of the present invention still can work.
Above to a kind of time synchronization control system from the net photovoltaic generating system provided by the present invention, be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications.In sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. the time synchronization control system from the net photovoltaic generating system is characterized in that, described time synchronization control system comprises: time service receiving circuit, clock alignment arithmetic control circuit, off-grid system Drive and Control Circuit;
Described time service receiving circuit has reception antenna, is used for receiving the radio standard time signal of radio time service transmitting station emission, is sent to described clock alignment arithmetic control circuit;
Described clock alignment arithmetic control circuit, be used for described standard time signal is carried out filter analysis, the actual clock signal of described standard time signal and photovoltaic generating system is compared, described actual clock signal is calibrated, the clock signal after the calibration is sent to described off-grid system Drive and Control Circuit;
Described off-grid system Drive and Control Circuit is connected to few two-way from the net photovoltaic generating system, is used for driving each road from the net photovoltaic generating system according to the clock signal after the described calibration that receives, so that each road keeps synchronously from the net photovoltaic generating system;
Wherein, described time service receiving circuit comprises:
Reception antenna connects an end of the first electric capacity, and the other end of described the first electric capacity connects the 4th port by the second electric capacity; The first inductance in parallel is at the second electric capacity two ends; The common port of the first electric capacity and the second electric capacity connects the 3rd port through the 3rd electric capacity, an end of public termination the 4th electric capacity of the first electric capacity and the second electric capacity, an end of the first resistance and an end of the second resistance;
The other end of the 4th electric capacity is through the 3rd magnetic core inductance and the 8th capacity earth; Another termination of the first resistance connects the second port through the 5th electric capacity; The other end ground connection of the second resistance; The collector electrode of public termination first triode of the first resistance and the second resistance; The base stage of the first triode is through the 3rd grounding through resistance, and emitter connects an end of the anode of the first diode and the 6th electric capacity, the 11 electric capacity; The negative electrode of the first diode connects the first port, and anode is through the second magnetic core inductance and the 7th capacity earth;
The other end of the 6th electric capacity connects the negative electrode of the second diode through the 9th electric capacity; The tenth electric capacity and the 4th inductance are respectively and be connected in the 6th electric capacity and the 9th electric capacity two ends; The anode of the second diode connects+the 5V power supply;
One end of the 12 electric capacity and one termination of the 4th resistance+5V power supply; The other end ground connection of the 12 electric capacity; The other end of the 4th resistance connects the base stage of the second triode through the 5th resistance; The grounded collector of the second triode, the emitter of the second triode connects the emitter of the first triode; The 11 electric capacity is connected between the collector and emitter of the second triode;
The 13 electric capacity is connected between the common port and ground of the 4th resistance and the 5th resistance;
The emitter of the second triode is through the 6th resistance, the 14 electric capacity, the 15 capacity earth; The 5th inductance is connected between the base stage of the common port of the 14 electric capacity and the 15 electric capacity and the second triode; The 16 electric capacity is connected between the collector electrode and ground of the second triode.
2. the time synchronization control system from the net photovoltaic generating system according to claim 1 is characterized in that, described clock alignment arithmetic control circuit comprises multivibrator, modulator-demodulator, clock circuit;
Described modulator-demodulator is used for the radio standard time signal that receives is judged, filtered and analyzes, and is sent to multivibrator;
Described multivibrator is used for extracting from described clock circuit the actual clock signal of photovoltaic generating system, described actual clock signal is compared with the standard time signal that receives, described actual clock signal is calibrated, and the clock signal after will calibrating is sent to the off-grid system Drive and Control Circuit;
Described clock circuit is used for storing the actual clock signal of photovoltaic generating system.
3. the time synchronization control system from the net photovoltaic generating system according to claim 2 is characterized in that, described multivibrator adopts 555 timers and its peripheral circuit to consist of; Described modulator-demodulator adopts C192 chip and its peripheral circuit to consist of; Described clock circuit adopts CD4028 chip and its peripheral circuit to consist of.
4. the time synchronization control system from the net photovoltaic generating system according to claim 1 is characterized in that, described off-grid system Drive and Control Circuit comprises at least two-way control branch road, and every road control branch road is used for driving a cover from the net photovoltaic generating system;
Each road control branch structure is identical, links to each other by series resistance between the adjacent two-way control branch road.
5. the time synchronization control system from the net photovoltaic generating system according to claim 4 is characterized in that, described control branch road comprises:
The negative electrode of the first optocoupler VLC1 is through three nine-day periods after the winter solstice grounding through resistance, and collector electrode connects+the 5V power supply, and emitter connects an end of the three or eight resistance, the anode of the three or three diode, the collector electrode of the three or four triode; The first output of another termination clock alignment arithmetic control circuit of the three or eight resistance; The negative electrode of the three or three diode connects the second output of clock alignment arithmetic control circuit;
The base stage of the three or four triode connects the three or five transistor emitter; The base stage of the three or five triode connects the 3rd output of clock alignment arithmetic control circuit; The emitter of the three or five triode connects the base stage of the three or three triode through pseudo-ginseng resistance; The emitter of the three or three triode is successively through the three or three resistance and the three or four grounding through resistance, and the collector electrode of the three or three triode and the collector electrode of the three or two triode together connect+the 5V power supply;
The base stage of the three or two triode connects the emitter of the three or four triode through the three or six resistance, the emitter of the three or two triode connects the base stage of the 31 triode; The emitter of the 31 triode is through the three or two grounding through resistance, and the collector electrode of the 31 triode connects the base stage of the three or six triode through the 31 resistance;
The collector electrode of the three or six triode connects the collector electrode of pseudo-ginseng triode; The emitter of pseudo-ginseng triode is through the three or five grounding through resistance; The negative electrode of the 31 diode connects the emitter of the three or six triode, and anode connects the collector electrode of the three or six triode; The negative electrode of the three or two diode connects the collector electrode of pseudo-ginseng triode, and anode connects the emitter of pseudo-ginseng triode;
The anode of the second optocoupler connects the emitter of pseudo-ginseng triode and the common port of the three or five resistance, minus earth;
The collector electrode short circuit of the anode of the first optocoupler and the second optocoupler is as the first output of this control branch road; The emitter of the second optocoupler is as the second output of this control branch road.
6. the time synchronization control system from the net photovoltaic generating system according to claim 5 is characterized in that, when the control branch road is two-way, connects by series resistance between the first control branch road and the second control branch road;
The collector electrode and second that described series resistance is connected on the three or six triode of the first control branch road controls between the collector electrode of the three or six triode of branch road; The emitter of the three or six triode of the first control branch road connects the emitter of the three or six triode of the second control branch road; The collector electrode of the three or five triode of the first control branch road connects the collector electrode of the three or four triode of the second control branch road; The collector electrode of the three or four triode of the first control branch road connects the collector electrode of the three or five triode of the second control branch road.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102774136A CN101951192B (en) | 2010-09-08 | 2010-09-08 | Time synchronization control system of off-grid photovoltaic power system |
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| CN101951192B true CN101951192B (en) | 2013-01-02 |
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| CN103323865A (en) * | 2013-06-19 | 2013-09-25 | 苏州大学 | Local time service positioning system based on low power consumption atomic clock |
| CN104158490B (en) * | 2014-08-19 | 2017-01-25 | 晖保智能科技（上海）有限公司 | photovoltaic power station standard plate energy measuring system |
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| JP2001221874A (en) * | 2000-02-14 | 2001-08-17 | Toshiba Corp | Time synchronization system |
| CN1490688A (en) * | 2002-10-17 | 2004-04-21 | 深圳市中兴通讯股份有限公司上海第二 | Timing system and method thereof |
| CN201218906Y (en) * | 2008-03-18 | 2009-04-08 | 上海宝康电子控制工程有限公司 | Intelligent traffic system with time service implemented by electric wave time reference signal |
| CN201813325U (en) * | 2010-09-08 | 2011-04-27 | 英利能源（中国）有限公司 | Time synchronization control system of off-grid photovoltaic power generation system |
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Application publication date: 20110119 Assignee: SHENZHEN YINGLI NEW ENERGY RESOURCES Co.,Ltd. Assignor: YINGLI ENERGY (CHINA) Co.,Ltd. Contract record no.: 2013990000738 Denomination of invention: Time synchronization control system of off-grid photovoltaic power system Granted publication date: 20130102 License type: Exclusive License Record date: 20131101 |
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