CN204101662U - Photovoltaic generating system AC parameters of electric power on-line computing model - Google Patents
Photovoltaic generating system AC parameters of electric power on-line computing model Download PDFInfo
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- CN204101662U CN204101662U CN201420581295.1U CN201420581295U CN204101662U CN 204101662 U CN204101662 U CN 204101662U CN 201420581295 U CN201420581295 U CN 201420581295U CN 204101662 U CN204101662 U CN 204101662U
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Abstract
The utility model relates to a kind of photovoltaic generating system AC parameters of electric power on-line computing model, comprising: three phase electric energy measurement circuit module, the control module be connected with described three phase electric energy measurement circuit module; Described three phase electric energy measurement circuit module comprises: be suitable for the electric energy detection chip measuring each phase voltage, current parameters respectively, and each phase current, voltage collection circuit; The output terminal of described each phase current, voltage collection circuit is connected with the electric current of the electric energy detection chip of corresponding phase, voltage input end respectively, and the measurement parameter of corresponding phase line is inputed to control module by each phase electric energy detection chip respectively; Described control module is connected with a display module, to show described measurement parameter; Energy monitor instrument of the present utility model has taken into full account real-time, accuracy, the efficiency of data acquisition, achieves and measures three-phase electricity simultaneously, and makes visualize, the automation and networking of data collection and analysis.
Description
Technical field
The utility model relates to a kind of photovoltaic generating system AC parameters of electric power on-line computing model.
Background technology
In photovoltaic generating system, the direct current that photovoltaic module sends, finally to become single-phase or three-phase alternating current through process such as inversions, therefore, single-phase or three-phase alternating current need carry out accurate, complete parameters of electric power on-line monitoring and analysis to this, thus provide effective foundation for the power quality analysis of photovoltaic generation.At present, existing product is all that three-phase alternating voltage and alternating current are become low-voltage signal by certain step-down, sampling processing circuit, then through modulus process, utilizes intelligent chip to complete detection, the calculating of parameters of electric power.Long-time use often brings the problem of zero migration and gain offsets, cannot on-line calibration.And generally cannot the parameters of electric power of real time inspection current detection intuitively, corresponding computer software must be adopted to carry out reading data in real-time and to carry out monitoring and analyzing.
Utility model content
The purpose of this utility model is to provide a kind of photovoltaic generating system AC parameters of electric power on-line computing model, to solve the technical matters of three-phase alternating current on-line measurement.
In order to solve the problems of the technologies described above, the utility model provides a kind of photovoltaic generating system AC parameters of electric power on-line computing model, comprising: three phase electric energy measurement circuit module, the control module be connected with described three phase electric energy measurement circuit module; Described three phase electric energy measurement circuit module comprises: be suitable for the electric energy detection chip measuring each phase voltage, current parameters respectively, and each phase current, voltage collection circuit; The output terminal of described each phase current, voltage collection circuit is connected with the electric current of the electric energy detection chip of corresponding phase, voltage input end respectively, and the measurement parameter of corresponding phase line is inputed to control module by each phase electric energy detection chip respectively; Described control module is connected with a display module, to show described measurement parameter.
Preferably, control to realize carrying out selection to each electric energy detection chip, the sheet choosing end of described control module selects control end to be connected with the sheet of each electric energy detection chip respectively.
Preferably, in order to avoid using the problem of zero migration and the gain offsets brought for a long time, the phase induced current of described each electric energy detection chip, voltage input end are also suitable for connecting grounding switch, and namely when grounding switch closes, described control module carries out data calibration.
Preferably, in order to realize Long-distance Control, to read the detection data of this monitor, described control module is also connected with RS485 communication module and/or GPRS wireless module.
Optionally, in order to realize instruction input further, described display module adopts touch-screen, to realize inputting the instruction of described control module; Or described control module is connected with a keyboard, to realize inputting the instruction of described control module.
Preferably, in order to meet the power supply needs of each chip in whole monitor, described photovoltaic generating system AC parameters of electric power on-line computing model also comprises the stabilized voltage supply of a multiple-channel output, this stabilized voltage supply comprises: rectification filtering module, be connected with 12V Voltage stabilizing module, 5V Voltage stabilizing module, 3.3V Voltage stabilizing module successively with the output terminal of this rectification filtering module, to be suitable for exporting 5V, 3.3V DC voltage simultaneously.
The beneficial effects of the utility model are, energy monitor instrument of the present utility model has taken into full account real-time, accuracy, the efficiency of data acquisition, achieves and measures three-phase electricity simultaneously, and make visualize, the automation and networking of data collection and analysis.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 shows the theory diagram of photovoltaic generating system AC parameters of electric power on-line computing model;
Fig. 2 shows the circuit diagram that a phase energy monitor special chip CS5463 is connected with grounding switch;
Fig. 3 shows the theory diagram of stabilized voltage supply.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
Fig. 1 shows the theory diagram of photovoltaic generating system AC parameters of electric power on-line computing model.
As shown in Figure 1, a kind of photovoltaic generating system AC parameters of electric power on-line computing model, comprising: three phase electric energy measurement circuit module, the control module be connected with described three phase electric energy measurement circuit module.
Described three phase electric energy measurement circuit module comprises:
Be suitable for the electric energy detection chip measuring each phase voltage, current parameters respectively, and each phase current, voltage collection circuit; The output terminal of described each phase current, voltage collection circuit is connected with the electric current of the electric energy detection chip of corresponding phase, voltage input end respectively, and the measurement parameter of corresponding phase line is inputed to control module by each phase electric energy detection chip respectively; Described control module is connected with a display module, to show described measurement parameter.
Wherein, described measurement parameter includes but not limited to instantaneous voltage, electric current, frequency, instantaneous power, active power, reactive power, applied power, power factor and calculating current effective value IRMS, voltage effective value VRMS.
Described control module can adopt but be not limited to single-chip microcomputer, embedded chip, dsp chip etc., such as dsp chip TMS320F28035, this dsp chip TMS320F28035, there is powerful data computing power, comprise high speed SPI communication module, distinctive steering logic accelerator CLA module, universal I/O port.Concrete, described dsp chip TMS320F28035 is communicated by SPI, realizes the reading to the parameters of electric power data that 3 energy monitor chip CS5463 detect every 10ms.
Described phase current Acquisition Circuit, voltage collection circuit are suitable for phase voltage through step-down filtering process, and tested alternating current is processed into low voltage signal through resistance sampling, and the voltage after process is sent into CS5463 and measured.
Described electric energy detection chip is such as but not limited to employing energy monitor special chip CS5463, concrete, VIN ﹢ pin, the VIN-pin of the corresponding energy monitor special chip CS5463 of described electric current, voltage input end difference, IIN ﹢ pin, IIN-pin.
In the technical program, the technical scheme of the Software for Design that described dsp chip is connected with energy monitor special chip CS5463 is at paper document: Hunan University in 2007, the Master's thesis " research & design based on the Multifunctional electronic electric energy meter of CS5463 " of the sweet Jianping of author is disclosed, repeats no more here.
Fig. 2 shows the circuit diagram that a phase energy monitor special chip CS5463 is connected with grounding switch.
Concrete, as shown in Figure 2, the phase induced current of described each electric energy detection chip, voltage input end are also suitable for connecting grounding switch K, namely when grounding switch K closes, described control module carries out data calibration, to avoid the problem using zero migration and the gain offsets brought for a long time, on-the-spot zero migration and gain offsets calibration operation can be carried out.Calibrated meter operation steps: disconnecting external electric current and voltage, calibration knob is connected, and object makes all tested voltage and current port ground connection, carries out calibration operation.
The sheet choosing end of described control module selects control end to be connected with the sheet of each electric energy detection chip respectively.
Described control module is also connected with RS485 communication module and/or GPRS wireless module, to realize long-range, controlled in wireless and data transmission, and carries out data communication with host computer.
Described display module adopts touch-screen, to realize inputting the instruction of described control module.Or described control module is connected with a keyboard, to realize inputting the instruction of described control module, concrete, display module block can adopt 128*64 dot matrix lcd, the parameters of electric power content of the monitoring shown can be selected, voltage, electric current, power measurement scale-up factor are set according to monitoring range; List/three-phase is set and measures type.
Described control module is connected with display module by chip 74LS164.
Fig. 3 shows the theory diagram of stabilized voltage supply.
As shown in Figure 3, described photovoltaic generating system AC parameters of electric power on-line computing model also comprises the stabilized voltage supply of a multiple-channel output, this stabilized voltage supply comprises: rectification filtering module, be connected with 12V Voltage stabilizing module, 5V Voltage stabilizing module, 3.3V Voltage stabilizing module successively with the output terminal of this rectification filtering module, to be suitable for exporting 5V, 3.3V DC voltage simultaneously, to meet the power supply needs of each chip in whole monitor.
Wherein, described 12V Voltage stabilizing module can adopt but be not limited to 7812 three-terminal voltage-stabilizing pipes, and described 5V Voltage stabilizing module can adopt but be not limited to 7805 three-terminal voltage-stabilizing pipes, and described 3.3V Voltage stabilizing module can adopt but be not limited to AS1117-33.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on instructions, must determine its technical scope according to right.
Claims (6)
1. a photovoltaic generating system AC parameters of electric power on-line computing model, is characterized in that, comprising: three phase electric energy measurement circuit module, the control module be connected with described three phase electric energy measurement circuit module;
Described three phase electric energy measurement circuit module comprises:
Be suitable for the electric energy detection chip measuring each phase voltage, current parameters respectively, and each phase current, voltage collection circuit; The output terminal of described each phase current, voltage collection circuit is connected with the electric current of the electric energy detection chip of corresponding phase, voltage input end respectively, and the measurement parameter of corresponding phase line is inputed to control module by each phase electric energy detection chip respectively;
Described control module is connected with a display module, to show described measurement parameter.
2. photovoltaic generating system AC parameters of electric power on-line computing model according to claim 1, is characterized in that, the sheet choosing end of described control module selects control end to be connected with the sheet of each electric energy detection chip respectively.
3. photovoltaic generating system AC parameters of electric power on-line computing model according to claim 2, it is characterized in that, the phase induced current of described each electric energy detection chip, voltage input end are also suitable for connecting grounding switch, and namely when grounding switch closes, described control module carries out data calibration.
4. photovoltaic generating system AC parameters of electric power on-line computing model according to claim 3, it is characterized in that, described control module is also connected with RS485 communication module and/or GPRS wireless module.
5. photovoltaic generating system AC parameters of electric power on-line computing model according to claim 4, is characterized in that, described display module adopts touch-screen, to realize inputting the instruction of described control module; Or
Described control module is connected with a keyboard, to realize inputting the instruction of described control module.
6. photovoltaic generating system AC parameters of electric power on-line computing model according to claim 5, it is characterized in that, described photovoltaic generating system AC parameters of electric power on-line computing model also comprises the stabilized voltage supply of a multiple-channel output, this stabilized voltage supply comprises: rectification filtering module, be connected with 12V Voltage stabilizing module, 5V Voltage stabilizing module, 3.3V Voltage stabilizing module successively with the output terminal of this rectification filtering module, to be suitable for exporting 5V, 3.3V DC voltage simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420581295.1U CN204101662U (en) | 2014-10-09 | 2014-10-09 | Photovoltaic generating system AC parameters of electric power on-line computing model |
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| CN201420581295.1U CN204101662U (en) | 2014-10-09 | 2014-10-09 | Photovoltaic generating system AC parameters of electric power on-line computing model |
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| CN204101662U true CN204101662U (en) | 2015-01-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891597A (en) * | 2016-04-07 | 2016-08-24 | 河海大学 | High voltage power transmission line electric energy wireless monitoring device and monitoring method |
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2014
- 2014-10-09 CN CN201420581295.1U patent/CN204101662U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891597A (en) * | 2016-04-07 | 2016-08-24 | 河海大学 | High voltage power transmission line electric energy wireless monitoring device and monitoring method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20181009 |