CN201583605U - Series power generation monitor of solar photovoltaic panel unit - Google Patents
Series power generation monitor of solar photovoltaic panel unit Download PDFInfo
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- CN201583605U CN201583605U CN2009201743627U CN200920174362U CN201583605U CN 201583605 U CN201583605 U CN 201583605U CN 2009201743627 U CN2009201743627 U CN 2009201743627U CN 200920174362 U CN200920174362 U CN 200920174362U CN 201583605 U CN201583605 U CN 201583605U
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Abstract
The utility model discloses a series power generation monitor of solar photovoltaic panel unit which comprises a bottom assembling board, a measuring board comprising power source supply and multi-group generating loop monitoring as well as a control board displaying operation and communication which are integrally combined so that a generating centralized box arranged in a solar photovoltaic panel can measure the total generation power and the total generated electricity of each group of series photovoltaic panels, and can also measure the generation power of each group series, can directly indicate the generation power and the generated electricity efficiency of each group series on LCD through embedded sequential operation; if the photovoltaic panel is lower than the lower limit of the generation efficiency, then the series power generation monitor of solar photovoltaic panel unit indicates through a red lamp; while the sum and the relative generation data of each group series not only can be displayed by the embedded LCD in sequence, but also can be collected by a RS-485 or wireless Zigbee interface to implement remote monitoring, which is convenient to judge whether each group generates normally or not and can quickly locate wrong photovoltaic panels or failure loops and ensure each photovoltaic panel to generate power under the optimal state.
Description
Technical field
The utility model relates to the Power Supply Monitoring technology, relate in particular to and a kind ofly can independently use or be installed in power informations such as source box internal monitoring voltage, electric current, power, real merit, and on LCD the display monitoring data, or by apparatus for monitoring power supply wireless or wire communication module and peripheral control unit bi-directional.
Background technology
Known now DC loop measuring method, mostly be that single loop is measured, can not measure simultaneously multiple groups of loop (as, 10 groups) and the summation electric energy in each loop, the design of electric power, can not use power supply and the measurement range can be from the so broad range of 70V～900V.
In addition, generally can handle very broad current range and very broad temperature range, and still possess certain accuracy, all must be by the circuit design and the application of instrument level, concentrate in together if will organize metering circuit more more, will inevitably make volume become very huge, and the integrated circuit cost is also higher relatively, so that does not meet the requirement of practicality and economy.
The utility model content
The purpose of this utility model mainly is to provide a kind of solar opto-electronic board group string generation monitoring device, it base plate, a slice that comprises that a slice is easy to assemble is measured plate and a slice control panel, concentrate in the case (being commonly referred to as direct current case or DC case) in the generating of solar opto-electronic board for being fit to this device, can be for the generated energy of the generating voltage of measuring each group string, electric current, power and accumulative total, and then whether the generated energy of judging each group string is rationally normal, can find out inefficient electro-optical package or fault loop fast, guarantee that whereby every electro-optical package all can normal power generation.
Secondary objective of the present utility model is to provide a kind of solar opto-electronic board group string generation monitoring device, can finish statistics and analysis work from the generating data of each optical crosstalk electroplax of long-range collection by control center, and then judges each loop conversion and transfer efficiency.
Another purpose of the present utility model, be to provide a kind of solar opto-electronic board group string generation monitoring device, can calculate and show the generated output and the generating number percent of each group string on the spot in real time automatically, and judge automatically via the lower limit generated energy percent value that sets in advance, if be lower than the value that sets, to show flashing indicator light, and can just can guide the tour personnel to find out the place of the electro-optical package of fault or poor efficiency immediately with cheap cost at the scene.
Another purpose of the present utility model, be to provide a kind of solar opto-electronic board group string generation monitoring device, its employed power supply is directly provided by the power supply of electro-optical package, need not the additional configuration external power source, and use wireless Zigbee communication module, allow measurement, information search etc. completely without linearize.Reduce engineering and the wire rod of pressing assembly line, also allow system maintenance simpler, more efficient simultaneously, increase convenience and reliability on using.
A purpose more of the present utility model, be to provide a kind of solar opto-electronic board group string generation monitoring device, its power supply supply is a generating voltage of directly taking from electro-optical package, so have very broad (operating voltage range technology and the low-down power consumption of 70V～900V), and its metering circuit can adapt to the operating temperature range of very broad voltage and magnitude of current range and broadness.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of solar opto-electronic board group string generation monitoring device, measurement plate, a slice that base plate, a slice that this generation monitoring device comprises a slice assembling usefulness contains the power supply supply and organize the power generation circuit monitoring more has the control panel of display operation and communication, and described triplicity is integral; Described base plate is located at orlop, and be fixed in the airtight casing or the centralized power distribution case in, on described base plate, place a slice and measure the measurement plate of respectively organizing crosstalk force information and power supply supply, wherein the power supply supply obtains from the input of power end stroma, and the power measurement of each group string is obtained from the negative terminal terminal base of electro-optical package group string, described measurement plate is monitoring each group input current and power by a plurality of groups of strings of terminal, and will organize the negative terminal output that electric current converges to the power end stroma more, the anode of electro-optical package generating cathode power supply terminal board is then taken from the total voltage after each anode parallel connection of organizing string, this voltage removes the measured voltage that obtains, power, outside the energy monitor information, and can provide required working power via conversion.
Wherein, the described measurement plate that contains power supply supply and the monitoring of many group power generation circuits is provided with the external terminal of RS-485 communication interface and abnormality indication.
Described control panel with display operation and communication is the human-machine operation panel, and is provided with the LCDs LCD that can show all measurements and set information in turn, and is provided with a plurality of touch-control keys that show LCD information and set use of taking turns in the operation push-button district.
Described control panel with display operation and communication is provided with Zigbee communication module interface, and the network that uses Zigbee wireless mode and automatic jumper connection to form.
The superiors of described generation monitoring device are equiped with a slice protection against electric shock transparent panel.
Be provided with protection switch and cathode power supply parallel connection and anti-reversing clutch in described airtight casing or the centralized power distribution case, and the lead-out terminal that is connected to the rear end current transformer after compiling.
Described generation monitoring device mainly comprises following functional module: each electro-optical package group string input current detects and timesharing is switched, the control of group crosstalk flow field simulation signal multiplying power, the processing of group crosstalk flow field simulation signal communication, each organizes the crosstalk energy measurement, input of electro-optical package cathode power supply and power supply supply conversion, each output in parallel of group string negative power supply and multiplying power control, the processing of sum total current analog signal interchangeization, the sum total electric energy measurement, the RS-485 communication interface, the voltage analog signal multiplying power is handled and the interchangeization processing, LCD shows and promotes, the Zigbee wireless communication interface, microprocessor and periphery, function indication and operation-interface.
The negative pole of the electro-optical package group string that described generation monitoring device is outside to be measured is received each electro-optical package group string input current and is detected and the timesharing commutation circuit, via its internal current detection resistance, to detect the simulating signal of respectively organizing crosstalk stream, these many group signals switch via the multitask timesharing, the current signal of each group string of time-division processing, via the multiplying power control of the signal after the timesharing switching by each electro-optical package group string input current detection and timesharing commutation circuit, obtain the accurate position of direct current, again direct current signal is changed into the AC signal of positive-negative half-cycle symmetry, the last again AC signal of this symmetrization being added to respectively organized the crosstalk energy measurement, and each group string negative power supply output in parallel and multiplying power control are with the current parallel of each group string, the current detection signal that obtains summing up, and the control of process multiplying power obtains the accurate position of direct current, this signal is again via the processing of sum total current analog signal interchangeization, direct current signal is converted to the AC signal of positive-negative half-cycle symmetry, is added to sum total electric energy measurement circuit then.
The cathode power supply of described exterior light electroplax is received input of electro-optical package cathode power supply and power supply supply conversion, obtain direct current 12V via power source conversion, 5V, 3.3V,-5V or-voltage of 1V, the cathode power supply of electro-optical package is via dividing potential drop simultaneously, control and the interchangeization processing and carry out the voltage analog signal multiplying power, and each electro-optical package group string input current detects and the timesharing commutation circuit, each string negative pole of its outside electro-optical package generating set string to be measured, receive the terminal of coupling in regular turn, form the current detection circuit of many strings, and each string loop connects together after all detecting resistance through one.
Described group of crosstalk flow field simulation signal multiplying power control circuit comprises an operational amplifier, and the circuit structure of this group crosstalk flow field simulation signal communication treatment circuit further is made up of operational amplifier and electronic type analog switching ic IC; Respectively organize crosstalk again and can measurement circuit comprise an electric energy measurement processing IC, electric current and voltage can be multiplied each other, and export with pulse singaling, and after the negative poles after wherein many group electro-optical packages serial connections receive the negative terminal platform of each group string of electro-optical package, and use current sense resistor and receive the respectively negative terminal of group string summation terminal board of electro-optical package, to finish each group string cathodal current and to connect and current measurement signal is obtained, supply direct generating voltage in described source from electro-optical package to be measured, its scope is between 70V～900V, negative pole after wherein many group electro-optical package serial connections, each loop connects together after all detecting resistance through one, the electric current in each loop is through behind the described detection resistance, just obtain an analog voltage, be used analog switch IC, certain a string generation current signal is selected in timesharing, through amplifying and the symmetrical alternating current processing, deliver to electric energy IC again, to be converted to each group string power and each group string timesharing accumulative total generated energy, the generated energy number percent that calculates each group string is again used, and the interchange treatment circuit of group crosstalk flow field simulation signal, its circuit structure is made up of operational amplifier and electronic type analog switch IC.
Solar opto-electronic board group string generation monitoring device described in the utility model has following advantage:
Use generation monitoring device of the present utility model, described device is installed on generating to be concentrated in the case, by measuring each group string generating voltage, electric current, power and the accumulative total generated energy of solar opto-electronic board group string, whether the generated energy that can judge each family's string is normal, and can find out inefficient electro-optical package or fault location loop fast, guarantee all energy operate as normal of every electro-optical package with this; Can also finish statistics and analysis work from the generating data of each optical crosstalk electroplax of long-range collection by control center, and then judge each loop conversion and transfer efficiency; By utilizing microprocessor that measured value is carried out computing, can calculate and show the generated output and the generating number percent of each group string on the spot in real time automatically, and judge automatically via the lower limit generated energy percent value that sets in advance; By using wireless Zigbee communication module, further allow measurement, information search etc. completely without linearize, and can reduce engineering and wire rod by assembly line, also allow system maintenance simpler, more efficient simultaneously, increase convenience and reliability on using.In addition, the generating voltage of electro-optical package is directly taken from the power supply supply of this generation monitoring device, so have very broad (operating voltage range technology and the low-down power consumption of 70V～900V), and its metering circuit can adapt to the operating temperature range of very broad voltage and magnitude of current range and broadness.
Description of drawings
Fig. 1 is that outward appearance of the present utility model is formed synoptic diagram;
Fig. 2 is an one-piece construction unfolding state figure of the present utility model;
Fig. 3 is seated in the distribution synoptic diagram that direct current is concentrated case for the utility model;
Fig. 4 is a functional-block diagram of the present utility model;
Fig. 5 is a circuit diagram one of the present utility model;
Fig. 6 is a circuit diagram two of the present utility model;
Fig. 7 is a circuit diagram three of the present utility model;
Fig. 8 is a circuit diagram four of the present utility model.
[component names]:
11, assembling base plate
12, base plate fixed orifice
13, power source conversion and measurement plate
14, electro-optical package generating cathode power supply terminal board
15, electro-optical package is respectively organized connection in series-parallel summation negative terminal platform
16, the negative terminal platform of each group string of electro-optical package
17, RS-485 communication interface and indicate the external terminal platform unusually
18, wireless telecommunications and operation control panel
19, LCD LCD
110, tutorial light
111, touch control operation button
112, Zigbee wireless communication module
113, protection against electric shock transparent panel
21, centralized power distribution case
22, protection switch
23, cathode power supply parallel connection and anti-reversing clutch
24, lead-out terminal
25, group string monitoring device
26, the configuration of electro-optical package
Embodiment
Below in conjunction with accompanying drawing and this novel embodiment the utility model is described in further detail.
As Fig. 1～shown in Figure 2, the utility model solar opto-electronic board group string generation monitoring device, in its preferable embodiment, this device mainly is made up of the control panel 18 that the base plate 11 of a slice assembling usefulness, measurement plate 13 that a slice can be measured 10 groups of strings and a slice contain demonstration, operation, communication module; Can be placed on separately in the airtight casing, also can be placed in the above-mentioned concentrated DC distribution case, again via suitable connection, just can be from near-end or the long-range purpose that reaches each group string generated energy of monitoring.
Existing solar electrical energy generation electro-optical package; probably can be divided into the silicon wafer electro-optical package; film light electroplax two classes; because the voltage and current of every electro-optical package is all very little; so be not suitable for directly will exporting and just move current transformer (it is in parallel with civil power to convert direct current to interchange) to; film light electroplax with high voltage is an example; its every is approximately had only 100V/1.5A; for allowing the more economical property of configuration; usually electro-optical package can be connected in series mutually as 6 or 9 and become a string 600V or 900V; again each group string backguy is focused near the electro-optical package the panel box; in this distributing cabinet, each group is gone here and there then, all connect together as 10 groups of strings, to increase its magnitude of current to 15A (1.5A * 10).In other words, this alleged concentrated DC distribution case is to be placed at the appropriate location that institute's desire is concentrated the electro-optical package generated energy, utilizes electro-optical package to improve voltage via serial connection, via and connect (parallel connection) and improve electric current, and reach the purpose of suitable power output.
Shown in the utility model outward appearance and one-piece construction unfolding state figure of Fig. 1～Fig. 2, orlop is the base plate 11 that a slice is easy to assemble usefulness among the figure, several fixed orifices 12 are set above the base plate 11, be easy to be fixed in the airtight casing or centralized power distribution case 21 in, this is placed a slice and measures plate 13 above base plate 11, measuring plate 13 topmost effects is the power informations that are used to measure each group string, and power supply supply, wherein the power supply supply obtains from 14 inputs of power end stroma, and the power measurement of each group string is obtained from the negative terminal terminal base 16 of electro-optical package group string; Design the monitoring capabilities that 10 group strings are arranged in the present embodiment altogether, in other words, this measurement plate 13 can be monitored each group input current and the power by 10 group strings of negative terminal platform 16 terminals of each group string of electro-optical package, and its 10 groups of electric currents converge to the negative terminal output of power end stroma 15,14 anode is then taken from the total voltage after each anode parallel connection of organizing string, this voltage obtains voltage, power, the energy monitor information except that measured, also can provide the utility model required working power via conversion.The lower right corner of measuring on the plate also is provided with RS-485 communication interface and unusual indication external terminal 17, can pass through each group string generating information of RS-485 interface wiring long distance monitoring, also can the near viewing pilot lamp.The superiors are control panel 18, be human-machine operation panel of the present utility model, the LCD display 19 in the centre can show the information of all measurements and setting in turn, indicator lamp regions 110 has 6 pilot lamp, for strengthening information display function of the present utility model and content subitem.Operation push-button district 111 has 3 touch-control keys, in order to take turns the usefulness that shows LCD information and setting.For the reinforcement ability to communicate, also be provided with Zigbee communication module interface 112 in addition, use the wireless and automatic jumper connection of Zigbee to form the function of network, can needn't just can obtain the generating data that each group is gone here and there in real time by distribution entirely.A slice protection against electric shock transparent panel 113 then installs in the superiors, the usefulness of error shock when preventing to operate.
Fig. 3 is internal configurations and the distribution synoptic diagram of this monitoring device at generating set trail raising middle flask; centralized power distribution case 21; in the general case protection switch 22 and cathode power supply parallel connection and anti-reversing clutch 23 just must be arranged; and desire lead-out terminal 24 that is connected to by the rear end current transformer etc. after compiling; monitoring device 25 of the present utility model is responsible for the parallel connection of electro-optical package negative power supply and the work of measurement and transmission data then by the lower left corner of device at centralized power distribution case 21.And the configuration 26 of each electro-optical package, the serial connection distribution of each electro-optical package is to implement outside distributing cabinet, as positive pole, the negative pole after first group of electro-optical package serial connection, receives P1 shown in the figure and N1 respectively, the rest may be inferred for all the other each groups.Distribution and old-fashioned concentrated case are identical like this, but because the adding of the utility model group string monitoring device 25 is arranged, just can obtain all generating electro-optical packages of big sun energy generating plant and respectively organize the real-time of string and add up to generate electricity data, and then guarantee generating efficiency and build the efficient of putting quality and posterior maintenance.
Fig. 4 is the composition form and function block scheme of the utility model solar opto-electronic board group string generation monitoring device, this device comprises that mainly each electro-optical package group string input current detects and (shown in the square frame 31) switched in timesharing, group crosstalk flow field simulation signal multiplying power control (square frame 32), group crosstalk flow field simulation signal communication processing (square frame 33), each organizes crosstalk energy measurement (square frame 34), input of electro-optical package cathode power supply and power supply supply conversion (square frame 35), each output in parallel of group string negative power supply and multiplying power control (square frame 36), sum total current analog signal interchangeization processing (square frame 37), sum total electric energy measurement (square frame 38), RS-485 communication interface (square frame 39), the voltage analog signal multiplying power is handled and interchangeization processing (square frame 310), LCD shows and promotion (square frame 311), Zigbee wireless communication interface (square frame 312), microprocessor and periphery (square frame 313), function indication and operation-interface (square frame 314) etc., the main effect and the annexation of each square frame are described as follows:
The negative pole system of the electro-optical package group string that the outside is to be measured receives square frame 31 among the figure, current detecting resistance via the small resistance of 31 internal poles, can detect the simulating signal of respectively organizing crosstalk stream, this signal is example with the utility model, have 10 groups of signals, skill via multitask timesharing switching, that is the current signal of each group string of time-division processing, via the multiplying power control of the signal after the timesharing switching by square frame 32, can obtain the accurate position of suitable direct current, this signal changes direct current signal into via square frame 33 AC signal of positive-negative half-cycle symmetry again, even also positive-negative half-cycle on the amplitude and the cycle ratio on identical, last again with the AC signal of this symmetrization, be added to square frame 34 and respectively organize the crosstalk energy measurement.
The cathode power supply of exterior light electroplax is received square frame 35, obtain DC 12V via power source conversion, 5V, 3.3V,-5V, voltages such as-1V, offer the required power supply of module shown in each square frame, the cathode power supply of electro-optical package is via suitable dividing potential drop simultaneously, offer square frame 310 and do control of voltage analog signal multiplying power and interchangeization processing, make the AC signal that obtains suitable amplitude and cycle ratio symmetry give the electric energy measurement of module shown in square frame 34 and the square frame 38, make the generated output instantly (KW) and the accumulated generation amount (KWh) of energy each electro-optical package group string of correct measurement of module shown in the described square frame and sum total.
Microprocessor and periphery shown in the square frame 313, be control of the present utility model and computing center, can directly measure 310 electro-optical package voltages after handling, also can receive each group and the sum total electric energy measurement consequential signal of square frame 34 and square frame 38, these messages utilize program to calculate and running via square frame 313, can be under square frame 311LCD demonstration and impetus, the message that shows measured and judged result, module shown in the square frame 314 then can provide man-machine operation interface can allow information and the indication easier performance, its measurement result also can be online via Zigbee wireless communication interface shown in RS-485 communication interface shown in the square frame 39 or the square frame 312 and remote monitoring control center, to realize more additional function, allow each group optical crosstalk electroplax generating information transparencyization on the generating plant, generating efficiency is grasped in datumization in real time.
The operating principle and the effect of each square frame circuit of the utility model solar opto-electronic board group string generation monitoring device below are described in detail in detail:
Square frame 31 as Fig. 5, each electro-optical package group string input current detects and the timesharing commutation circuit, each string negative pole of outside electro-optical package generating set string to be measured, receive terminal 1 to terminal 10, the current detection circuits of totally 10 strings, each string loop connects together after all detecting resistance through one, detect resistance and be numbered R3, R5, R12, R17, R26, R32, R36, R37, R39, R42 respectively, totally 10, its resistance is very little, is equivalent to the resistance of the copper cash of the long 2.0mm of 20cm.The electric current in each loop just obtains a very small current analog magnitude of voltage through detecting resistance, and this magnitude of voltage direct proportion is in the current value that passes through.U1 in the square frame 31, U6, U9, U12, U15 is electronic type analog switch IC, effect via C1～C10 control line, but the current analog signal of each group is taken out in timesharing, for example, C1 is high (HI) current potential among the figure, surplus C2～C10 is low (Low) current potential, this moment, first group of analog switch of switch U1 was conducting, all the other disconnect (OFF) entirely, at this moment the voltage on the R3 just is switched the current detection signal output terminal of receiving shown in this functional-block diagram, be added to next stage square frame 32 and do multiplying power control and measurement, in other words, this moment, metering circuit was the electric current of measurement group string 1, and surplus group of string 2～10 operating principles are analogized, as long as control C1～C10, the just electric current of each group string of energy measurement.C1～C10 is all directly controlled by microprocessor, so can switch the information such as electric current, power, generated energy of group crosstalk to be measured stream and its corresponding each group string of multitasking synchronously.
Group crosstalk flow field simulation signal multiplying power control circuit shown in the square frame 32 of Fig. 5, U3 is an operational amplifier among the figure, group crosstalk flow field simulation signal is by resistance R 4, the R8 input, see through resistance R 1 and R9 and resistance R 4, the resistance ratio design that R8 is suitable, the may command enlargement factor, and obtain the accurate position of suitable direct current signal, VR2 is the usefulness that the OFFSET bias voltage of operational amplifier U3 makes zero among the figure, make when the electric current of input group string is 0, be output as 0V, when being input as full scale such as during 15A, can get suitably voltage quasi position such as the output of 0.15V, its purpose is being used very little detection resistance, makes the magnitude of current measure almost inactivity consume of process, but still can keep the very high accuracy and the measurement performance of resolution.
Group crosstalk flow field simulation signal communication treatment circuit shown in Fig. 5 square frame 33, its circuit structure mainly is made up of operational amplifier U5 and U8 electronic type analog switch IC, resistance R 2 equates with the R6 resistance value among the figure, can change U5 via the control of the C11 of U8 and C12 is that positive amplifies or inverting amplifier, its multiplying power all is 1, so can obtain the amplitude symmetry, the ac square wave that the cycle ratio is identical, its amplitude is identical with input voltage to be measured, also be proportional to the electric current of to be tested group of string, its purpose can compensate the effect that reduces mutually at temperature range internal cause positive-negative polarity that can be very broad, and very stable measurement performance is arranged.
Shown in Fig. 5 square frame 34, respectively organize crosstalk energy measurement circuit, U4 is the electric energy measurement processing IC among the figure, electric current and voltage can be multiplied each other, and export with pulse singaling, current signal is from the AC signal of symmetrization described before the square frame 33, promptly represent a certain group of string measured value at this moment, voltage signal is from square frame 310 in addition, direct proportion is in the AC signal of the symmetrization of electro-optical package generating voltage, this AC signal is promptly represented the generating voltage after instantly the total parallel connection of electro-optical package, the AC signal of two symmetries is via the synergism of U4 electric energy IC, but the umber of pulse of direct proportion output pulse signal, i.e. frequency.In other words, when both signals are 0 or one of them is when being 0, then pulse-free signal output, if both signals, just have the highest pulsed frequency output of full scale all with the input of full scale maximal value, measure umber of pulse in real time by microprocessor, via calculating the performance number (KW) that just can obtain this moment, be the product of voltage V and electric current I, also can be by the microprocessor umber of pulse that it produced that adds up, via the generated energy (KWh) that calculates and the constant conversion just can obtain accumulating.
Input of electro-optical package cathode power supply and power supply supply change-over circuit shown in Fig. 6 square frame 35, after the anodal parallel connection of electro-optical package to be measured, its total output voltage is received the terminal of P2 among the figure, this voltage is received square frame 10 on the one hand, take out the magnitude of voltage of proper proportion through dividing potential drop, signal source as measuring light electroplax generating voltage, this generating voltage is very unstable on the other hand, scope is very broad, as the utility model is 70V～900V, and design can offer other each partly circuit uses from wherein obtaining the power supplys of stablizing and organizing more.Its principle Action Specification is as follows; utilize a high-voltage diode D5; obtain the voltage of generating from the P2 end; fuse F1 by a low capacity; form first order protection together with capacitor C 22, resistance R 43 and variable resistor RV2, inductance L 7, protection thunderbolt or isolate with power generation plate when damaging does not impact or danger.Diode D2, D3, D7, D9, resistance R 44, R50, electrochemical capacitor EC3, variable resistor RV1 form second level high pressure and stop and the limiting protecting circuit; wherein D9 is a high voltage stabilizing diode; the highest about 400V of deboost output; Q1 is a high-pressure MOS FET; be used for stopping surpassing the above high voltage of 400V, in other words, it is exported as the voltage on RV1, the electrochemical capacitor EC3; because the effect of this circuit, voltage is limited between 70V～400V.Real voltage transitions is made up of as institutes such as voltage stabilizing diode ZD1, resistance R 51, R45, capacitor C 23, diode D10, transformer T1, capacitor C 26, resistance R 60, capacitor C 29 U20 and periphery, and by photoelectrical coupler U22 feedback voltage stabilizing controlled condition.The stable value that is controlled by resistance R 69, R72, R65, R67 and voltage stabilizing diode SHR1 of its voltage, need the stabilized power source of 5V as the utility model primary power, and it is from wherein one group of coil of transformer T1, and via rectification and the filtering gained of diode D6, electrochemical capacitor EC1, inductance L 2, electrochemical capacitor EC2, capacitor C 21 and diode D8 etc.Transformer T1 has still designed one group of coil in addition, filtering through diode D12 rectification electrochemical capacitor EC4, capacitor C 27 can obtain one group of 12V power supply of isolating fully, this power supply is via integrated regulator (IC) U25 of module shown in the square frame 39 and peripheral filtering thereof, mu balanced circuit, can obtain one and isolate stable again 5VA power supply, offer RS-485 light shown in the square frame 39 and isolate the communication interface effect.
This square frame is still needed to be provided-5V and-1V uses to linear circuit, it mainly is made up of institutes such as U14 switching type capacitor IC and inductance L 1, capacitor C 18, C19, C17, resistance R 41, capacitor C 20, diode D4, U14 can with input+the 5V reverse of polarity becomes-5V, D4 is light emitting diode (LED), utilize its forward voltage characteristic of 1V, obtain the magnitude of voltage of about-1V, give module shown in the above-mentioned square frame 31, as, for the usefulness of simulating signal electronic switch IC such as U1.
The 5V of last this square frame is via the filtering of U26 voltage stabilizing IC and capacitor C 59, capacitor C 40, and 3.3V power supply that can be stable offers the working power of Zigbee wireless module shown in the square frame 3 12.
As Fig. 5 square frame 36 each output in parallel of group string negative power supply and multiplying power control circuits, the electric current of each group string in square frame 31, connect together via detecting resistance, receive resistance R 23 and resistance R 27 other two low-down sum total current detecting with resistance after to the N2 lead-out terminal, and the purpose of finishing electro-optical package group string negative pole and connecing.Sum total electric current after each group is gone here and there and connect obtains summing up current analog signal on 27 2 detection resistance in parallel of resistance R 23 and resistance R, this signal is controlled by operational amplifier U10 multiplying power, its enlargement factor is decided by the ratio of resistance R 24 and resistance R 30, variable resistor VR1 then is the OFFSET of the operational amplifier U10 adjustment of making zero, and its effect is identical with square frame 32 with purpose.
Module sum total current analog signal interchangeization treatment circuit shown in Fig. 5 square frame 37, its circuit structure mainly is made up of operational amplifier U11 and U13 electronic type analog switch IC, resistance R 25 is identical with resistance R 23 resistances among the figure, and its operating principle and effect are identical with module shown in the square frame 33.
As Fig. 5 square frame 38 sum total electric energy measurement circuit, U2 is the electric energy measurement processing IC among the figure, and this energy circuit ties up to measures sum total electric current and the power (KW) of total back in parallel voltage and the measurement of accumulative total generated energy (KWh), and its effect is identical with square frame 34.
As control of Fig. 6 square frame 310 voltage analog multiplying powers and interchangeization treatment circuit, back in parallel positive polarity voltage P2 point in figure of power generation plate inserts, by resistance R 48, R53, R57 and R64 dividing potential drop, obtain the magnitude of voltage of a proper proportion, but measure this magnitude of voltage direct proportion in the output voltage values of power generation plate.The resistance of resistance R 47, R52, R56 is all identical with resistance R 48, R53, R57; go up resistance R48, R53, the contact of R57 on printed circuit board (PCB) (PCB) at printed circuit board (PCB) layer of cloth (PCB layout); design has two insulation blocking rings; its protection ring is received respectively on the contact of resistance R 47, R52, R56, increases the accuracy of dividing potential drop and permanent stability.Operational amplifier U18 cooperates resistance R 59, R61 and capacitor C 28, plays high input impedance and filter action jointly.U19 and U8 and peripheral group conclusion of the business fluidisation circuit, its effect is identical with module shown in the square frame 33 with purpose, it is output as symmetrical amplitude and modulus of periodicity is intended AC signal, direct proportion is in the generating voltage of electro-optical package this moment, receive the voltage input V2P end of the electric energy measurement IC of module shown in the square frame 34 and square frame 38 described modules respectively, make U4 and U2 can correctly obtain the information that each group is gone here and there and always set up the generated output instantly (KW) and the accumulative total generated energy (KWh) of string jointly.Operational amplifier U16 and resistance R 54, R55, R49, capacitor C 24 etc. are formed a suitable multiplying power control, its output direct proportion is in the electro-optical package generating voltage, receive the PB1 pin of module shown in the square frame 313, directly measure this magnitude of voltage by the A/D converter of microprocessor U21 inside.
Shown in the microprocessor and peripheral circuit of Fig. 8 square frame 313 modules, the microprocessor U21 of this square frame includes running, calculates supervisor is control center of the present utility model, is described below:
X2 is a higher-order of oscillation crystal, and a stable work time-base signal is provided.X3 is low frequency 32768 oscillating crystals, and the reference signal source of Time Calculation is provided.Resistance R 73, capacitor C 32 are (RESET) circuit that resets of starting shooting, resistance R 71 is that a temperature detection resistance and resistance R 66, R70, capacitor C 30 are formed temperature sensing circuits jointly, microprocessor U21 measure the branch pressure voltage of resistance R 66 and resistance R 71, just can calculate peripheral temperature instantly, as the foundation of temperature compensation.U17 is memory IC, can store and measure outside the parameter of adjusting, and the data of other measurement results and accumulative total electric energy etc. also are provided, and when Guan Dianzai opened electricity, storage data was according to still continuing to have.
Be subjected to the U24 and the U27 of microprocessor U2 1 control in addition, its output control line C1～C10 is used for timesharing to select measuring light electroplax group string 1～10 synchronously, the generating data of a certain optical crosstalk electroplax, C11 and C12 are used for the measuring-signal interchangeization, make the control line of periodic symmetry up and down.That is microprocessor is via C1～C12 control line of U24 and U27, can synchronously and initiatively select group string to be measured, and the cycle of the positive and negative half cycle of symmetry control, each group string and sum total electric power, electric energy can be stablized and the operating temperature range of broad accurately be measured.
Microprocessor U21 also can receive and handle operation-interface shown in the square frame 314, by three touch-control key operation controls such as the touch-control IC U5 and the KEY1～KEY3 that arranges in pairs or groups, and the operation of pressing this moment is indicated, light LD2～LD7 LED, cooperate the U7 of square frame 311 to promote LCD display again, the performed instantly content of indication operator.For example: the present electric power of LD2, on behalf of this moment LCD instruction content, lamp is bright be the sum total generated output (KW) of electro-optical package instantly.The LD3 gross generation, on behalf of this moment LCD instruction content, lamp is bright be total accumulative total generated energy (KWh).LD4 usefulness, lamp is bright represents electricity generation efficiency (%) and power (W) that this moment, the LCD instruction content was gone here and there for each group.LD5 sets, and bright LCD indicative of settings content of parameter this moment of representing of lamp is judged (%) or monitoring serial number etc. as usefulness.LD6 pilot lamp backlight also can glimmer when unusual warning lamp.LD7 is a dual-colored LED, goes here and there when each group of representative that gives a green light and all generates electricity normally, and the representative that sends out a warning has at least one group of string electricity generation efficiency to be lower than the usefulness lower limit that sets, and this moment, external unusual pilot lamp also can be and then glittering.LD1 is the generated energy constant, and when every generating was accumulated to the energy of 1Wh, LD1 was once glittering, and when generated energy is healed when big, the glittering frequency of LD1 is just faster, and this signal also can provide the usefulness of the electric energy accuracy of external unit fair copy monitor.
The utility model is for strengthening communication function, also is provided with module shown in the module and wireless Zigbee communication interface square frame 312 shown in Fig. 6 RS-485 communication interface square frame 39; Wherein the U32 of square frame 39 is RS-485 communication IC, can grow the transmission signal of distance, for increasing security, this communication IC independently uses one group of 5VA power supply of isolating, this power supply and electro-optical package to be measured generating power supply are isolated fully, the 12V power supply that its power supply is responded to from one group of absolute coil of the transformer T1 of module shown in the square frame 35, via voltage stabilizing IC U25 and peripheral capacitor C 35, C36, C37, the C38 voltage stabilizing becomes 5VA, the communication signal TXD of RS-485 and RXD signal and control line etc. are then via U28 among the figure, U30, three photoelectrical couplers of U31 are reached, make the measured generating data of little processing IC U21 shown in the square frame 313, photoelectrical coupler and RS-485 IC and peripheral control unit are finished the communication purpose shown in the process square frame 39 under the condition of electrical equipment sexual isolation.
The circuit of square frame 312 shown in Figure 7 then is another communication interface, uses a Zigbee wireless communication module to realize that this module uses power supply to be 3.3V, and changeing 3.3V voltage stabilizing IC by the U26 5V of module shown in the square frame 3.5 is provided.Capacitor C 41～C44 among square frame 313 figure is 3.3V power filter electric capacity, make stable voltage be added to the Zigbee module of U29, the communication signal line transmitting terminal (TXD) of this module and receiving end (RXD) are directly received the communication pin of module microprocessor U21 shown in the square frame 313, promptly indicate PIN22, PIN 23 pin of U21 among the figure, in other words by the measured generating data of U21, via TXD and RXD signal wire and Zigbee module U29, enable to utilize wireless mode, finish the communication purpose with peripheral control unit.Light emitting diode D13 among the figure, D14 indicates as communication state, U33 then provides two settings input signal button (BUTTON) 0 and the BUTTON 1 that uses touch control manner, promptly use finger near the touch sheet that indicates KEY5 and KEY6 among the figure, can set communication pairing and the communications parameter of Zigbee, allow the utility model finish communication setting by Zigbee collection device smooth and easy and that peripheral control unit is interior, make the data of the utility model electro-optical package group string generating, can be sent to control center in real time, reach every optical crosstalk electroplax generating information transparencyization and promote generating efficiency and the purpose of simplification solar plant maintenance.
The foregoing description is taken off, it only is the explanation that exemplifies of the utility model major technique, be not in order to limit this case technical scope, such as relate to equivalent application or be simple and easy change or displacer based on the preceding paragraph technological means, all should be considered as this case technical scope, for example, quantity or voltage, current monitoring scope and overall dimensions variation etc. that the group string monitors all can change in simple and easy increase and decrease.The above is preferred embodiment of the present utility model only, is not to be used to limit protection domain of the present utility model.
Claims (10)
1. solar opto-electronic board group string generation monitoring device, it is characterized in that, measurement plate, a slice that base plate, a slice that this generation monitoring device comprises a slice assembling usefulness contains the power supply supply and organize the power generation circuit monitoring more has the control panel of display operation and communication, and described triplicity is integral; Described base plate is located at orlop, and be fixed in the airtight casing or the centralized power distribution case in, on described base plate, place a slice and measure the measurement plate of respectively organizing crosstalk force information and power supply supply, wherein the power supply supply obtains from the input of power end stroma, and the power measurement of each group string is obtained from the negative terminal terminal base of electro-optical package group string, described measurement plate is monitoring each group input current and power by a plurality of groups of strings of terminal, and will organize the negative terminal output that electric current converges to the power end stroma more, the anode of electro-optical package generating cathode power supply terminal board is then taken from the total voltage after each anode parallel connection of organizing string, this voltage removes the measured voltage that obtains, power, outside the energy monitor information, and can provide required working power via conversion.
2. solar opto-electronic board group string generation monitoring device as claimed in claim 1 is characterized in that, the described measurement plate that contains power supply supply and the monitoring of many group power generation circuits is provided with the external terminal of RS-485 communication interface and abnormality indication.
3. solar opto-electronic board group string generation monitoring device as claimed in claim 1, it is characterized in that, described control panel with display operation and communication is the human-machine operation panel, and be provided with the LCDs LCD that can show all measurements and set information in turn, and be provided with a plurality of touch-control keys that show LCD information and set use of taking turns in the operation push-button district.
4. as claim 1 or 3 described solar opto-electronic board group string generation monitoring devices, it is characterized in that described control panel with display operation and communication is provided with Zigbee communication module interface, and the network that uses Zigbee wireless mode and automatic jumper connection to form.
5. solar opto-electronic board group string generation monitoring device as claimed in claim 1 is characterized in that the superiors of described generation monitoring device are equiped with a slice protection against electric shock transparent panel.
6. solar opto-electronic board group string generation monitoring device as claimed in claim 1; it is characterized in that; be provided with protection switch and cathode power supply parallel connection and anti-reversing clutch in described airtight casing or the centralized power distribution case, and the lead-out terminal that is connected to the rear end current transformer after compiling.
7. solar opto-electronic board group string generation monitoring device as claimed in claim 1, it is characterized in that described generation monitoring device mainly comprises following functional module: each electro-optical package group string input current detects and timesharing is switched, the control of group crosstalk flow field simulation signal multiplying power, the processing of group crosstalk flow field simulation signal communication, each organizes the crosstalk energy measurement, input of electro-optical package cathode power supply and power supply supply conversion, each output in parallel of group string negative power supply and multiplying power control, the processing of sum total current analog signal interchangeization, the sum total electric energy measurement, the RS-485 communication interface, the voltage analog signal multiplying power is handled and the interchangeization processing, LCD shows and promotes, the Zigbee wireless communication interface, microprocessor and periphery, function indication and operation-interface.
8. solar opto-electronic board group string generation monitoring device as claimed in claim 7, it is characterized in that, the negative pole of the electro-optical package group string that described generation monitoring device is outside to be measured is received each electro-optical package group string input current and is detected and the timesharing commutation circuit, via its internal current detection resistance, to detect the simulating signal of respectively organizing crosstalk stream, these many group signals switch via the multitask timesharing, the current signal of each group string of time-division processing, via the multiplying power control of the signal after the timesharing switching by each electro-optical package group string input current detection and timesharing commutation circuit, obtain the accurate position of direct current, again direct current signal is changed into the AC signal of positive-negative half-cycle symmetry, the last again AC signal of this symmetrization being added to respectively organized the crosstalk energy measurement, and each group string negative power supply output in parallel and multiplying power control are with the current parallel of each group string, the current detection signal that obtains summing up, and the control of process multiplying power obtains the accurate position of direct current, this signal is again via the processing of sum total current analog signal interchangeization, direct current signal is converted to the AC signal of positive-negative half-cycle symmetry, is added to sum total electric energy measurement circuit then.
9. solar opto-electronic board group string generation monitoring device as claimed in claim 7, it is characterized in that, the cathode power supply of described exterior light electroplax is received input of electro-optical package cathode power supply and power supply supply conversion, obtain direct current 12V via power source conversion, 5V, 3.3V,-5V or-voltage of 1V, the cathode power supply of electro-optical package is via dividing potential drop simultaneously, control and the interchangeization processing and carry out the voltage analog signal multiplying power, and each electro-optical package group string input current detects and the timesharing commutation circuit, each string negative pole of its outside electro-optical package generating set string to be measured, receive the terminal of coupling in regular turn, form the current detection circuit of many strings, and each string loop connects together after all detecting resistance through one.
10. solar opto-electronic board group string generation monitoring device as claimed in claim 7, it is characterized in that, described group of crosstalk flow field simulation signal multiplying power control circuit, comprise an operational amplifier, the circuit structure of this group crosstalk flow field simulation signal communication treatment circuit further is made up of operational amplifier and electronic type analog switching ic IC; Respectively organize crosstalk again and can measurement circuit comprise an electric energy measurement processing IC, electric current and voltage can be multiplied each other, and export with pulse singaling, and after the negative poles after wherein many group electro-optical packages serial connections receive the negative terminal platform of each group string of electro-optical package, and use current sense resistor and receive the respectively negative terminal of group string summation terminal board of electro-optical package, to finish each group string cathodal current and to connect and current measurement signal is obtained, supply direct generating voltage in described source from electro-optical package to be measured, its scope is between 70V～900V, negative pole after wherein many group electro-optical package serial connections, each loop connects together after all detecting resistance through one, the electric current in each loop is through behind the described detection resistance, just obtain an analog voltage, be used analog switch IC, certain a string generation current signal is selected in timesharing, through amplifying and the symmetrical alternating current processing, deliver to electric energy IC again, to be converted to each group string power and each group string timesharing accumulative total generated energy, the generated energy number percent that calculates each group string is again used, and the interchange treatment circuit of group crosstalk flow field simulation signal, its circuit structure is made up of operational amplifier and electronic type analog switch IC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201743627U CN201583605U (en) | 2009-12-23 | 2009-12-23 | Series power generation monitor of solar photovoltaic panel unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201743627U CN201583605U (en) | 2009-12-23 | 2009-12-23 | Series power generation monitor of solar photovoltaic panel unit |
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| CN201583605U true CN201583605U (en) | 2010-09-15 |
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| CN2009201743627U Expired - Lifetime CN201583605U (en) | 2009-12-23 | 2009-12-23 | Series power generation monitor of solar photovoltaic panel unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616596A (en) * | 2013-11-29 | 2014-03-05 | 华为技术有限公司 | String abnormality detection method and system based on inverter grid connection |
| CN103809047A (en) * | 2012-11-09 | 2014-05-21 | 河南省电力公司焦作供电公司 | Centralized electric appliance monitoring device |
| CN108039773A (en) * | 2017-12-22 | 2018-05-15 | 苏州正易鑫新能源科技有限公司 | A kind of long-range efficiency calculation apparatus and system of photo-voltaic power generation station |
-
2009
- 2009-12-23 CN CN2009201743627U patent/CN201583605U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103809047A (en) * | 2012-11-09 | 2014-05-21 | 河南省电力公司焦作供电公司 | Centralized electric appliance monitoring device |
| CN103616596A (en) * | 2013-11-29 | 2014-03-05 | 华为技术有限公司 | String abnormality detection method and system based on inverter grid connection |
| CN103616596B (en) * | 2013-11-29 | 2017-01-18 | 华为技术有限公司 | String abnormality detection method and system based on inverter grid connection |
| CN108039773A (en) * | 2017-12-22 | 2018-05-15 | 苏州正易鑫新能源科技有限公司 | A kind of long-range efficiency calculation apparatus and system of photo-voltaic power generation station |
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Granted publication date: 20100915 |