CN201713861U - Solar frequency conversion auxiliary constant-pressure water-supply energy-saving control system - Google Patents
Solar frequency conversion auxiliary constant-pressure water-supply energy-saving control system Download PDFInfo
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- CN201713861U CN201713861U CN2010201811595U CN201020181159U CN201713861U CN 201713861 U CN201713861 U CN 201713861U CN 2010201811595 U CN2010201811595 U CN 2010201811595U CN 201020181159 U CN201020181159 U CN 201020181159U CN 201713861 U CN201713861 U CN 201713861U
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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
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Abstract
The utility model relates to a solar frequency conversion auxiliary constant-pressure water-supply energy-saving control system, which comprises a solar array and a water pump group. A solar general frequency converter is connected between the solar array and the water pump group, an electric power input end of the urban network water pump group, which is used for mains supply input, is connected with an urban network general frequency converter, the system further comprises an optimum power tracking controller comprising a microprocessor and an analog quantity input circuit, an input end of the analog quantity input circuit is connected with a pressure sensor, and the system is further communicated with the solar general frequency converter through a direct-current voltage and current mutual inductor so as to obtain voltage and current outputted from the solar array. The solar frequency conversion auxiliary constant-pressure water-supply energy-saving control system does not need a storage battery to store electric power, can directly provide power to the general frequency converters, optimizes system efficiency, guarantees stable water supply pressure, saves electric power to the utmost extent, has the advantages of high energy-saving capability, zero pollution, full automation, high reliability and the like, and is lower in investment.
Description
Technical field
The utility model relates to a kind of constant pressure water supply system, relates in particular to the auxiliary constant pressure water supply and energy saving control system of a kind of solar energy frequency conversion, belongs to solar high-efficiency energy-saving and utilizes technical field.
Background technology
The solar building photovoltaic technology is used the light mechanical and electrical integration in the high-technology field that belongs to the state key support.Traditional solar water supply system is mainly used in the single user of remote areas without electricity or the water pumping system of village's group, and storing facilities of water is arranged mostly.In recent years, photovoltaic industry begins progressively to be strided forward fast to the direction that the city generates electricity by way of merging two or more grid systems, photovoltaic building is integrated by outlying rural area.
The Design Mode of traditional solar water supply system is divided into 2 big classes by motor type: (1) drives direct current pump group, set of systems becomes the mode and is generally " solar battery array-MPPT controller-batteries-direct current pump group ", for improving the conversion efficiency of system, motor adopts non-brush permanent-magnet DC motor more; (2) drive alternating current pump group, set of systems becomes the mode and is generally " solar battery array-MPPT controller-batteries-special inverter-alternating current pump group ".
More than independent solar water system, especially the middle low power system of two kinds of patterns, generally all with battery as energy storage device, but the shortcoming that battery exists some to be difficult to overcome, short as cycle life, power density is low, maintenance is big etc.At present, the investment of batteries accounts for 20%～25% of system cost, and because the photovoltaic system particularity on work condition causes too early inefficacy of battery or capacitance loss, has further strengthened the cost of photovoltaic system.On the other hand, the photovoltaic DC-to-AC converter of import is on the high side, and homemade photovoltaic DC-to-AC converter does not also have ripe standard product, has all restricted the development of solar water supply system.
The utility model content
The purpose of this utility model is the deficiency that overcomes existing solar water supply system, a kind of maximum saves energy, system effectiveness optimization is provided and guarantees that the stable solar energy frequency conversion of pressure of supply water assists the constant pressure water supply and energy saving control system.
For achieving the above object, first kind of technical scheme of the auxiliary constant pressure water supply and energy saving control system of the solar energy frequency conversion that the utility model provides is as follows: the constant pressure water supply and energy saving control system is assisted in a kind of solar energy frequency conversion, comprise solar array and water pump group, the water pump group comprises solar water pump group and city's net water pump group, be connected with the solar energy universal frequency converter between described solar array and the solar water pump group, the power input end that city's net water pump group is used for the civil power input is connected with city Netcom frequency converter, described system also comprises respectively and the solar energy universal frequency converter, the best power tracking control unit that city Netcom links to each other with the two-way control of frequency converter, described best power tracking control unit comprises microprocessor, be used to detect the dc voltage and current detection system of solar array output voltage current signal, handle the simulated measurement input circuit of hydraulic signal, the dc voltage and current detection system, the output of simulated measurement input circuit links to each other with microprocessor, and the input of simulated measurement input circuit is connected with the pressure sensor that is used to obtain system's discharge pressure signal.
A capacitance group in parallel between described solar array and the solar energy universal frequency converter.
Described dc voltage and current detection system comprises DC voltage transformer and DC current transformer.
Described best power tracking control unit comprises the control power supply that is connected with microprocessor.
Second kind of technical scheme of the auxiliary constant pressure water supply and energy saving control system of the solar energy frequency conversion that the utility model provides is as follows: the constant pressure water supply and energy saving control system is assisted in a kind of solar energy frequency conversion, comprise solar array and water pump group, the water pump group comprises solar water pump group and city's net water pump group, be connected with the solar energy universal frequency converter between described solar array and the solar water pump group, the power input end that city's net water pump group is used for the civil power input is connected with city Netcom frequency converter, described system also comprises respectively and the solar energy universal frequency converter, the best power tracking control unit that city Netcom links to each other with the two-way control of frequency converter, described best power tracking control unit comprises the analog quantity input module of the processing hydraulic signal that microprocessor is connected with its input, described microprocessor input is provided with the PORT COM that is used to obtain solar energy universal frequency converter input voltage and current signal with solar energy universal frequency converter control connection, and the input of simulated measurement input circuit is connected with the pressure sensor that is used to obtain system's discharge pressure signal.
A capacitance group in parallel between described solar array and the solar energy universal frequency converter.
Described best power tracking control unit comprises the control power supply that is connected with microprocessor.
The auxiliary constant pressure water supply and energy saving control system of solar energy frequency conversion of the present utility model need not the batteries store electrical energy, can directly supply with universal frequency converter uses, improve the popularity rate of solar energy, under sun-drenched situation, utilize solar energy to save city's net electricity consumption as far as possible, reach the system effectiveness optimization and guaranteed the pressure stability that supplies water, energy is saves energy farthest, have high energy-conservation, pollution-free, automatically, advantages such as high reliability, and invest lower, be suitable for China's low-carbon economy, the developing direction of recycling economy helps China and builds economy type, environment-friendly type society.
In addition, more steady for the output voltage that makes solar array, native system is a capacitance group in parallel between solar array and solar energy universal frequency converter also.
Description of drawings
Fig. 1 is the structure principle chart of the utility model embodiment 1;
Fig. 2 is the structure principle chart of the utility model embodiment 2;
Fig. 3 is the stagnant ring of a solar energy universal frequency converter voltage start and stop control flow chart.
The specific embodiment
Be illustrated in figure 1 as the structure principle chart of the auxiliary constant pressure water supply and energy saving control system embodiment 1 of the utility model solar energy frequency conversion, this system comprises solar array 1 and water pump group 3, water pump group 3 comprises solar water pump group 31 and city's net water pump group 32, be connected with the solar energy universal frequency converter between described solar array 1 and the solar water pump group 31, solar energy universal frequency converter and 5 two-way connections of best power tracking control unit, best power tracking control unit 5 is a core with the microprocessor, input and the dc voltage and current detection system that is used to detect solar array output voltage current signal, the simulated measurement input circuit of handling hydraulic signal is connected, the input of this controller also is connected with the control power supply, its output and the city Netcom that has been connected civil power frequency converter 6 diconnecteds, the output of city's net frequency converter is connected with the city's net water pump group 32 that comprises city host pump group and auxilliary pump group, the input of simulated measurement input circuit is connected with the pressure sensor that is used to obtain system's discharge pressure signal, and the dc voltage and current detection system comprises DC voltage transformer and DC current transformer.The real-time detection that best power tracking control unit 5 is realized water pump group outlet header road hydraulic pressure by pressure sensor 4 is regulated solar energy universal frequency converter 2 output frequencies to reach the purpose that the best power operating point is followed the tracks of automatically by the electric current and voltage output signal of dc voltage and current detection system and the hydraulic pressure situation of sensor detection; Also be parallel with a capacitance group 7 between solar array and the solar energy universal frequency converter, be used to cushion the voltage pulsation of solar array, steady voltage.
Be illustrated in figure 2 as the structure principle chart of the auxiliary constant pressure water supply and energy saving control system embodiment 2 of the utility model solar energy frequency conversion, embodiment 2 is that with the difference of embodiment 1 present embodiment does not adopt the dc voltage and current detection system, but, obtain the purpose of solar energy universal frequency converter input voltage and current signal with same realization by on the microprocessor input, being provided with and solar energy universal frequency converter PORT COM.
Solar energy universal frequency converter preferred Siemens M440 universal frequency converter among two embodiment of native system, the best power tracking control unit, hereinafter to be referred as the BTTP controller, its microprocessor adopts S7-300CPU, cooperate touch-screen dynamic menu flow process, parameter interactive interface, realized sun-generated electric power, solar energy universal frequency converter, water pump, city Netcom are automaticallyed switch with the Monitoring and Controlling and the pump group of frequency converter; When the water pump group adopted mouse cage AC formula three-phase AC asynchronous motor to drive, the solar energy universal frequency converter adopted the universal frequency converter that carries the DC bus-bar voltage lead-out terminal; The solar water pump group also can adopt direct current generator to drive, and then it directly adopts solar energy output voltage direct current power to drive.
The course of work of the present utility model and principle are as follows:
Good in intensity of illumination, can satisfy under the situation of system water, it is the service requirement that electric energy that solar array 1 is sent can satisfy solar energy universal frequency converter 2, solar water pump group 31 fully, and pressure sensor 4 shows pressure stability and reaches under the situation of setting pressure that the BTTP controller operates in control system under the photovoltaic system fully.
Good in intensity of illumination, but can not satisfy under the situation of system water, be that the electric energy that solar array 1 is sent can satisfy solar energy universal frequency converter 2, solar water pump group 31 service requirements fully, but pressure sensor 4 shows that pressure does not reach under the situation of setting pressure, the BTTP controller makes full use of solar energy with control system, and insufficient section is replenished with general frequency conversion system by city's net.
Intensity of illumination a little less than, but can satisfy under the situation of system water, it is the service requirement that electric energy that solar array 1 is sent can satisfy solar energy universal frequency converter 2, solar water pump group 31 fully, and pressure sensor 4 shows pressure stability and reaches under the situation of setting pressure that the BTTP controller operates in control system under the photovoltaic system fully.
Intensity of illumination a little less than, can not satisfy under the situation of system water, be that the electric energy that solar array 1 is sent can satisfy the service requirement of solar energy with universal frequency converter 2, water pump group 31 fully, but pressure sensor 4 shows that pressure does not reach under the situation of setting pressure, the BTTP controller makes full use of solar energy with control system, and insufficient section is replenished with general frequency conversion system by city's net.
Low or unglazed in intensity of illumination according under the situation, be that the electric energy that solar array 1 is sent can not satisfy the service requirement of solar energy with universal frequency converter 2, water pump group 31, and pressure sensor 4 shows that pressure do not reach under the situation of setting pressure, and the BTTP controller moves at city's net control system under with general frequency conversion system fully.
In addition, because native system does not have application cost and the higher batteries of maintenance cost, then adopt big capacitance group, so store electrical energy that can't be a large amount of, and the Siemens's M440 universal frequency converter that is adopted has following operating characteristic: if its dc voltage (being the output voltage of solar array) is lower than 420V, will send under-voltage fault alarm and shut down, but if dc voltage drops to 420V and then can not send under-voltage fault alarm under stopped status; If its dc voltage is higher than 527V, will send overvoltage fault alarm and shutdown.On the other hand, the array output voltage approximates open-circuit voltage when system-down, and after system started, the array output voltage can descend, and after this may cause frequency converter to start, causes frequency converter to shut down because of the array output voltage reduces; After frequency converter is shut down, because of the array output voltage rises frequency converter is restarted again.For avoiding system this frequent start-stop vibration to occur and under-voltage fault alarm takes place frequency converter; characteristic according to the M440 universal frequency converter; be provided with the stagnant ring of a start and stop voltage in the system; its control flow as shown in Figure 3; set as solar array dc voltage 〉=510V and when keeping 1 minute (can according to factors such as the illumination adjusting time); the solar energy universal frequency converter could start; the solar energy system operation; system changes the solar energy system independent operating into or nets system combined operation with the city; (can regulate the time according to factors such as illumination) as dc voltage≤450V and when keeping 1 minute, the solar energy universal frequency converter could be shut down.Solar energy system simultaneity factor out of service changes city's net powered operation into, the solar energy universal frequency converter is started once more after must waiting the solar array dc voltage to rise to 510V after the shutdown.
The utility model is used for building constant pressure water supply system with solar energy certain technical advantage: (1) solar power supply system need not the batteries store electrical energy, and can directly supply with universal frequency converter and use; (2) the sun-generated electric power interconnection technology is also popularized at present, and its technical equipment is had relatively high expectations, and realizes constant pressure water supply system and solar electrical energy generation is used for universal frequency converter, invests lower; (3) the building roof installation solar battery array of mostly having ready conditions, and can obtain preferably solar radiation energy. Therefore, invention of the present utility model is built economizing type, environment-friendly type society to current China, and develop actively low-carbon economy, recycling economy have good facilitation.
Claims (7)
1. the constant pressure water supply and energy saving control system is assisted in a solar energy frequency conversion, comprise solar array and water pump group, it is characterized in that: the water pump group comprises solar water pump group and city's net water pump group, be connected with the solar energy universal frequency converter between described solar array and the solar water pump group, the power input end that city's net water pump group is used for the civil power input is connected with city Netcom frequency converter, described system also comprises respectively and the solar energy universal frequency converter, the best power tracking control unit that city Netcom links to each other with the two-way control of frequency converter, described best power tracking control unit comprises microprocessor, be used to detect the dc voltage and current detection system of solar array output voltage current signal, handle the simulated measurement input circuit of hydraulic signal, the dc voltage and current detection system, the output of simulated measurement input circuit links to each other with microprocessor, and the input of simulated measurement input circuit is connected with the pressure sensor that is used to obtain system's discharge pressure signal.
2. the constant pressure water supply and energy saving control system is assisted in solar energy frequency conversion according to claim 1, it is characterized in that: a capacitance group in parallel between described solar array and the solar energy universal frequency converter.
3. the constant pressure water supply and energy saving control system is assisted in solar energy frequency conversion according to claim 1 and 2, it is characterized in that: described dc voltage and current detection system comprises DC voltage transformer and DC current transformer.
4. the constant pressure water supply and energy saving control system is assisted in solar energy frequency conversion according to claim 3, it is characterized in that: described best power tracking control unit comprises the control power supply that is connected with microprocessor.
5. the constant pressure water supply and energy saving control system is assisted in a solar energy frequency conversion, comprise solar array and water pump group, it is characterized in that: the water pump group comprises solar water pump group and city's net water pump group, be connected with the solar energy universal frequency converter between described solar array and the solar water pump group, the power input end that city's net water pump group is used for the civil power input is connected with city Netcom frequency converter, described system also comprises respectively and the solar energy universal frequency converter, the best power tracking control unit that city Netcom links to each other with the two-way control of frequency converter, described best power tracking control unit comprises the analog quantity input module of the processing hydraulic signal that microprocessor is connected with its input, described microprocessor input is provided with the PORT COM that is used to obtain solar energy universal frequency converter input voltage and current signal with solar energy universal frequency converter control connection, and the input of simulated measurement input circuit is connected with the pressure sensor that is used to obtain system's discharge pressure signal.
6. the constant pressure water supply and energy saving control system is assisted in solar energy frequency conversion according to claim 5, it is characterized in that: a capacitance group in parallel between described solar array and the solar energy universal frequency converter.
7. according to claim 5 or the auxiliary constant pressure water supply and energy saving control system of 6 described solar energy frequency conversions, it is characterized in that: described best power tracking control unit comprises the control power supply that is connected with microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201811595U CN201713861U (en) | 2010-05-06 | 2010-05-06 | Solar frequency conversion auxiliary constant-pressure water-supply energy-saving control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201811595U CN201713861U (en) | 2010-05-06 | 2010-05-06 | Solar frequency conversion auxiliary constant-pressure water-supply energy-saving control system |
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| CN201713861U true CN201713861U (en) | 2011-01-19 |
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| CN2010201811595U Expired - Fee Related CN201713861U (en) | 2010-05-06 | 2010-05-06 | Solar frequency conversion auxiliary constant-pressure water-supply energy-saving control system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291593A (en) * | 2013-06-09 | 2013-09-11 | 北京吉阳技术股份有限公司 | Control method for photovoltaic water pump system |
| CN104528883A (en) * | 2014-12-30 | 2015-04-22 | 王晓初 | Solar photovoltaic direct-drive seawater reverse osmosis desalting device |
| CN109538458A (en) * | 2019-01-10 | 2019-03-29 | 东莞市深鹏电子有限公司 | A kind of solar water pump regulating device and its control method |
| CN110629834A (en) * | 2019-08-05 | 2019-12-31 | 浙江天赐新能源科技有限公司 | Photoelectric constant-pressure water supply control system |
-
2010
- 2010-05-06 CN CN2010201811595U patent/CN201713861U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291593A (en) * | 2013-06-09 | 2013-09-11 | 北京吉阳技术股份有限公司 | Control method for photovoltaic water pump system |
| CN103291593B (en) * | 2013-06-09 | 2016-06-29 | 北京吉阳技术股份有限公司 | A kind of control method being applied to photovoltaic water pump system |
| CN104528883A (en) * | 2014-12-30 | 2015-04-22 | 王晓初 | Solar photovoltaic direct-drive seawater reverse osmosis desalting device |
| CN109538458A (en) * | 2019-01-10 | 2019-03-29 | 东莞市深鹏电子有限公司 | A kind of solar water pump regulating device and its control method |
| CN110629834A (en) * | 2019-08-05 | 2019-12-31 | 浙江天赐新能源科技有限公司 | Photoelectric constant-pressure water supply control system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20130506 |