CN202870216U - Intelligent photovoltaic confluence data collection apparatus - Google Patents
Intelligent photovoltaic confluence data collection apparatus Download PDFInfo
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- CN202870216U CN202870216U CN 201220565400 CN201220565400U CN202870216U CN 202870216 U CN202870216 U CN 202870216U CN 201220565400 CN201220565400 CN 201220565400 CN 201220565400 U CN201220565400 U CN 201220565400U CN 202870216 U CN202870216 U CN 202870216U
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Abstract
The utility model relates to an intelligent photovoltaic confluence data collection apparatus, belonging to the field of photovoltaic battery intelligent monitoring technology, comprising a main control collection module used for detecting the output of a photovoltaic power generation system and measuring environment parameters, and one or more expansion data collection modules used for detecting the current of various photovoltaic confluence loops, wherein the main control collection module and the expansion data collection module are connected through an internal bus, and the internal bus comprises at least one communication line, thereby realizing data exchange between the main control collection module and the expansion data collection module. The intelligent photovoltaic confluence data collection apparatus has the advantages of being convenient for users to use and increasing the use flexibility, ensuring the reliability of data transmission, simplifying peripheral circuits, and increasing system reliability and reducing system cost; can detect the out voltage of 1000V or lower than 1000V of the photovoltaic power generation system, can measure the environment parameters of the photovoltaic power generation system, and can detect the current and power of a plurality of paths; and has switch value input and output functions.
Description
Technical field
The utility model belongs to photovoltaic cell intelligent monitoring technology field, is specifically related to a kind of Intelligent photovoltaic data collector that confluxes
Background technology
Along with the development of new energy technology, people are persistently overheating for the attention rate of this green energy resource of sun power.Based on the progressively popularization of solar photovoltaic technology, the demand of photovoltaic header box increases just gradually.In photovoltaic generating system, the huge photovoltaic cell component of quantity is gone here and there and is made up just and can reach the required voltage current value, so that generating efficiency reaches best.The Main Function of photovoltaic combiner box is exactly one-level to be carried out in the input of photovoltaic battery array conflux, and is used for reducing the line that photovoltaic cell arrays is linked into inverter, and the optimization system structure improves reliability and maintainability.Intelligent photovoltaic confluxes harvester as the critical elements of photovoltaic combiner box, is widely used in solar power system.The Intelligent photovoltaic harvester is mainly measured electric current, voltage, the power of photovoltaic battery array, simultaneously the faults such as cutout, overcurrent is reported to the police.Simultaneously, also provide the function of the environmental baselines such as monitoring irradiation, wind speed, temperature, humidity, in addition, also have the functions such as switching value input, output, communication.A kind of multiloop photovoltaic DC harvester that confluxes is disclosed such as Chinese utility model patent Granted publication CN201966832U, it adopts the isolated form Hall current sensor to replace traditional electromagnetic type Hall element to carry out the photoelectric cell current detecting, has reduced small product size and has greatly reduced cost; Simultaneously at the cpu circuit periphery configure communicating circuit and demonstration circuit is set, make this harvester that confluxes have greater functionality; Adopt in addition various ways to carry out the signal input, greatly improved its range of application.But there is following shortcoming in this patent: can only realize at the most the expansion of two acquisition modules 1.; 2. be connected to the universal I/O port of microprocessor after the analog to digital conversion output of acquisition module of confluxing is multiplexing with data storage circuitry, so just can't realize the software verification of image data, data transmission easily is disturbed, and reliability is low; 3. design signal amplification circuit, analog-to-digital conversion circuit, data storage circuitry and inside temperature measurement circuit, greatly increased design cost.
In view of above-mentioned prior art, be necessary existing photovoltaic conflux data collector is improved, technical scheme described below produces under such background
Summary of the invention
The purpose of this utility model is to provide a kind of Intelligent photovoltaic data collector that confluxes, can adjust flexibly the way of acquisition module, realization is to the measurement of electric current, voltage, power and environmental parameter, and have to cutout, overcurrent, open into etc. the failure condition function of reporting to the police, greatly improve the operational management ability of photovoltaic generating system, realized autodiagnosis; Also has simultaneously extensibility.
The purpose of this utility model reaches like this, a kind of Intelligent photovoltaic data collector that confluxes, characteristics are: comprise one for detection of the output of photovoltaic generating system and master control acquisition module and one or more the growth data acquisition modules that detects for the electric current in loop that photovoltaic is respectively confluxed that environmental parameter is measured, the master control acquisition module is connected internal bus with the growth data acquisition module and connects, internal bus comprises a communication line at least, realizes the exchanges data between master control acquisition module and the growth data acquisition module.
In a specific embodiment of the present utility model, described master control acquisition module comprises first microprocessor circuit, auxiliary power circuit, first interface circuit, opens into circuit, digital output circuit, display circuit, key circuit, telecommunication circuit and Acquisition Circuit, described first microprocessor circuit with the first interface circuit, open into circuit, digital output circuit, display circuit, key circuit, telecommunication circuit and Acquisition Circuit and be connected, auxiliary power circuit is connected with the first interface circuit, provides power supply by the first interface circuit for the growth data acquisition module; Auxiliary power circuit also with the first microprocessor circuit, open into circuit, digital output circuit, display circuit, key circuit, telecommunication circuit and Acquisition Circuit and be connected, for each circuit provides power supply.
In another specific embodiment of the present utility model, described Acquisition Circuit comprises DC0～1000V Acquisition Circuit, DC0(4)～20mA Acquisition Circuit, DC0～100mV Acquisition Circuit, DC0～10V Acquisition Circuit and Pt100 temperature collection circuit, DC0～1000V Acquisition Circuit, DC0(4)～20mA Acquisition Circuit, DC0～100mV Acquisition Circuit, DC0～10V Acquisition Circuit and Pt100 temperature collection circuit be connected with the first microprocessor circuit respectively.
In another specific embodiment of the present utility model, described growth data acquisition module comprises power circuit, the second interface circuit, the second microcontroller circuit and one or more current collection circuit, power circuit is connected with the second interface circuit and the second microcontroller circuit, and the second microcontroller circuit is connected with the second interface circuit and current collection circuit.
In another specific embodiment of the present utility model, the communication line of described internal bus is I
2
In C, SPI and the RS485 bus one or more.
The utility model is owing to adopted said structure, compared with prior art, the beneficial effect that has is: adopt modular design, can select a plurality of growth data acquisition modules to carry out the expansion of current acquisition passage, thereby can realize 4 the tunnel, the 8 tunnel, the 12 tunnel, the 16 tunnel and above current acquisition, user friendly selecting improved the dirigibility of using; Data communication between master control acquisition module and the growth data acquisition module has reliable data check function, has guaranteed the reliability of data transmission; Adopt the inner microprocessor that is integrated with the functions such as PGA, SDAD, temperature collect module and EEPROM FLASH, simplified peripheral circuit, improved system reliability and greatly reduced cost; Can detect photovoltaic generating system DC1000V and following output voltage by the Acquisition Circuit in the master control acquisition module, and can measure the environmental parameter of photovoltaic generating system such as irradiation, temperature, humidity, wind speed etc., can realize that also precision can reach 0.5% to the detection of multichannel electric current, power etc.; Have the switching value input function, can detect the duty of dc circuit breaker and Surge Protector; Have the switching value output function, can the output relay node signal.
Description of drawings
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is the circuit block diagram of master control acquisition module.
Fig. 3 is the circuit diagram of the auxiliary power circuit of master control acquisition module.
Fig. 4 is the circuit diagram of the Acquisition Circuit in the master control acquisition module.
Fig. 5 is the circuit diagram of the first microprocessor circuit in the master control acquisition module.
Fig. 6 is the circuit block diagram of growth data acquisition module.
Fig. 7 is the circuit diagram of the power circuit of growth data acquisition module.
Fig. 8 is the circuit diagram of the current collection circuit in the growth data acquisition module.
Embodiment
In order to make the public can fully understand technical spirit of the present utility model and beneficial effect; the applicant will describe in detail embodiment of the present utility model below by reference to the accompanying drawings; but the applicant is not restriction to technical scheme to the description of embodiment, anyly makes form and immaterial variation all should be considered as protection domain of the present utility model according to the utility model design.
See also Fig. 1, a kind of Intelligent photovoltaic data collector that confluxes comprises that a master control acquisition module 1 of measuring for detection of the output of photovoltaic generating system and to environmental parameter and one or more are used for the photovoltaic growth data acquisition module 2 that the electric current in loop detects that respectively confluxes, master control acquisition module 1 is connected with the growth data acquisition module and is connected by internal bus 3, internal bus 3 comprises a communication line at least, realizes the exchanges data between master control acquisition module 1 and the growth data acquisition module 2.Described master control acquisition module 1 mainly provides the measurement to environmental baselines such as irradiation, wind speed, temperature, humidity; Output voltage to photovoltaic generating system detects; Respectively the conflux electric current in loop of query expansion data acquisition module 2; Realize the detection of switching value input state and the control of switching value output; Realize data communication and the demonstration of measurement parameter and the setting of parameter with host computer.Growth data acquisition module 2 is mainly finished the detection of the loop current of respectively confluxing, and the current detecting result is delivered to master control acquisition module 1 by internal bus 3 process.The communication line of internal bus 3 is I
2
In C, SPI and the RS485 bus one or more.
See also Fig. 2, described master control acquisition module 1 comprises first microprocessor circuit 11, auxiliary power circuit 12, first interface circuit 13, opens into circuit 14, digital output circuit 15, display circuit 16, key circuit 17, telecommunication circuit 18 and Acquisition Circuit 19.Auxiliary power circuit 12 is connected with first interface circuit 13, provides power supply by first interface circuit 13 for growth data acquisition module 2; Simultaneously, auxiliary power circuit 12 also is connected with other each circuit of master control acquisition module 1, for other each circuit provide power supply.Described first microprocessor circuit 11 is connected with first interface circuit 13, by respectively the conflux electric current in loop of first interface circuit 13 query expansion data acquisition modules 2, realizes communicating by letter between master control acquisition module 1 and the growth data acquisition module 2.First microprocessor circuit 11 is connected with opening to be connected with digital output circuit into circuit 14, carries out the processing of intake collection and the amount of leaving; First microprocessor circuit 11 is connected with display circuit 16, key circuit 17 and telecommunication circuit 18, wherein, display circuit 11 is used for the demonstration of measured value, and key circuit 17 can carry out the parameter setting as the interface of human-machine operation, and telecommunication circuit 18 provides the communication interface with host computer.Please again consult Fig. 2, described Acquisition Circuit 19 comprises DC0～1000V Acquisition Circuit 191, DC0(4)～20mA Acquisition Circuit 192, DC0～100mV Acquisition Circuit 193, DC0～10V Acquisition Circuit 194 and Pt100 temperature collection circuit 195, first microprocessor circuit 11 and DC0～1000V Acquisition Circuit 191, DC0(4)～20mA Acquisition Circuit 192, DC0～100mV Acquisition Circuit 193, DC0～10V Acquisition Circuit 194 and Pt100 temperature collection circuit 195 connect, output voltage to photovoltaic generating system detects, to irradiation, wind speed, temperature, the environmental parameters such as humidity are measured.
Seeing also Fig. 3 is the circuit diagram of the auxiliary power circuit 12 of master control acquisition module 1.Described auxiliary power circuit 12 comprises diode D2～D5, D11, D13～D16, capacitor C 8, C9, C10, C11, C24, C27, C28, C30～C43, resistance R 37, R38, R46, R84, R85, R91, R93, R94, R100～R103, R107, R108, R112, voltage stabilizing diode FV1, FV2, D12, MOS transistor V28, switching power source chip N13, switch transformer T1, optocoupler N14, the first power supply chip N3, inductance L 2, L3, voltage reference diode N15, second source chip N16, the one DC-DC chip P1, the 2nd DC-DC chip P2 and linear voltage decreasing chip N5.The external power source of AC160～700V or DC200～1000V is adopted in the input of circuit, generate three tunnel outputs behind external power source process switch transformer T1, MOS transistor V28, the switching power source chip N13, one the tunnel exports 24V direct supply+24V1 after diode D13, the first power supply chip N3, inductance L 3, one the tunnel generates 5V direct supply+5V1 after diode D15, inductance L 2, another road generates 12V direct supply power supply+12V through diode D14, second source chip N16.24V direct supply+24V1 generates first DC-isolation power supply+24V2 through a DC-DC chip P1; 5V direct supply+5V1 generates second DC-isolation power supply+5V2 through the 2nd DC-DC chip P2; 5V direct supply+5V1 generates 3.3V direct supply+3V3 through linear step-down chip N5, and diode D2, D3, D4, D5 are used for rectification when input ac power, is used for counnter attack access protection when input DC power.The effect of MOS transistor V28 is that the voltage that when input voltage surpasses switching power source chip N13 withstand voltage switching power source chip N13 is born carries out dividing potential drop, thereby the voltage that assurance switching power source chip N13 bears in allowed band, guarantees the functional reliability of whole power supply all the time.In the present embodiment, switching power source chip N13 adopts TNY27X, optocoupler N14 adopts PC817, the first power supply chip N3 adopts LM5007, second source chip N16 adopts 78L12, the one DC-DC chip P1 adopts B2424, and the 2nd DC-DC chip P2 adopts IB0505, and linear voltage decreasing chip N5 adopts TPS76333.
See also Fig. 4, described Acquisition Circuit 19 also comprises the first multi-strobe circuit, and described the first multi-strobe circuit comprises the first multi channel selecting chip N7, resistance R 39～R41, triode V25～V27.The 3 pin input first microprocessor circuit 11 of each Acquisition Circuit signal of Acquisition Circuit 19 base stage S2, S1, S0 and first multi channel selecting chip N7 by triode V25～V27 behind the first multi-strobe circuit gating carries out work.In the present embodiment, the first multi channel selecting chip N7 adopts 74HC4051D.Described Acquisition Circuit 19 is take DC0～1000V Acquisition Circuit 191 and Pt100 temperature collection circuit 195 as example, described DC0～1000V Acquisition Circuit 191 comprises socket X14, resistance R 87, R88, R105, R106, R111, capacitor C 46, C47, linear optical coupling N20 and operational amplifier N17A, N17B, N18A, in the present embodiment, linear light lotus root N20 adopts HCNR201, and the effect of linear light lotus root N20 is the reliable measurements that has realized under the prerequisite that guarantees the signals security isolation input voltage.Circuit will be sent into operational amplifier N17A, N17B by 0～1000V d. c. voltage signal of socket X14 input after resistance R 105, R106 dividing potential drop, herein, operational amplifier N17A is designed to voltage follower, and operational amplifier N17B is designed to the negative feedback input of linear optical coupling N20.The output termination operational amplifier N18A of linear optical coupling N2O, operational amplifier N18A is voltage follower herein, for increasing the driving force of linear light lotus root output signal.1 pin of operational amplifier N18A with are connected pin and connect and become the output terminal of this Acquisition Circuit, be connected to 13 pin of the first multi channel selecting chip N7 of the first multi-strobe circuit, output signal is inputted first microprocessor circuit 11 and is carried out work behind the first multi-strobe circuit gating.The output coefficient of linear light lotus root N20 can be regulated by resistance R 88, R111.Described Pt100 temperature collection circuit 195 comprises socket X7, Voltage Reference diode N19, triode V21 and resistance R 86, R92, and in the present embodiment, Voltage Reference diode N19 adopts LM285.Thermistor Pt100 is connected with the collector of triode V21 by 2 pin of socket X7, and being connected to 2 pin of the first multi channel selecting chip N7 in the first multi-strobe circuit, input first microprocessor circuit 11 carries out work behind the first multi-strobe circuit gating.In this circuit, used the Constant Current-Source Design of Voltage Reference diode N19, guarantee the current constant that flows through on the thermistor Pt100.The variation of the resistance of thermistor Pt100 can cause the variation of sampled voltage under different temperatures, thereby realizes the measurement to temperature.
See also Fig. 5, described first microprocessor circuit 11 comprises microprocessor N9, capacitor C 12～C15, C17, C18, C21 and resistance R 47～R78, R81, R98, R99, and in the present embodiment, described microprocessor N9 adopts MSP430F67.First microprocessor circuit 11 is cores of master control acquisition module 1, communicates the measured value that reads the loop current of respectively confluxing with growth data acquisition module 2 on the one hand; On the other hand also will to analog measurement, open into leave, the demonstration of measured value and control with communicating by letter of host computer.1,61,62,63 pin of microprocessor N9 are connected with Acquisition Circuit 19, are used for the measurement of analog quantity; 12～14 pin connect the RS485 communication module, realize the data communication with host computer; 24,25 pin are connected with digital output circuit 15, for the control of leaving, 33,34 pin are connected to first interface circuit 13, be used for and the communicating by letter of growth data acquisition module 2,38～40 pin are connected with opening into circuit 14, be used for the detection of intake, 41～56 pin are connected with display circuit 16, are used for showing control; 67～74 pin are connected with key circuit 17, carry out the button collection as man-machine operation interface.Resistance R 81 and capacitor C 21 provide reset signal for microprocessor N9.Resistance R 98, R99 are for drawing on the internal bus.All the other resistance all are used for the current limliting to the pin of microprocessor N9.The frequency signal that microprocessor N9 adopts internal oscillator to provide carries out work.
See also Fig. 6, be the circuit block diagram of growth data acquisition module 2.Growth data acquisition module 2 comprises power circuit 21, the second interface circuit 22, the second microcontroller circuit 23 and one or more current collection circuit 24, and in the present embodiment, the second microcontroller circuit 23 adopts MSP430F672X.Power circuit 21 and the second interface circuit 22 be connected microcontroller circuit 23 and be connected, power circuit 21 be other each circuit supplies of growth data acquisition module 2 after will processing by the power supply that the second interface circuit 22 obtains from master control acquisition module 1.The second microcontroller circuit 23 is connected with current collection circuit 24, realizes the collection to current signal; The second microcontroller circuit 23 is connected with the second interface circuit 22 simultaneously, by the information interaction of the second interface circuit 22 realizations with master control acquisition module 1.24 pairs of a plurality of photovoltaic conflux loop currents of current collection circuit are measured, and are transferred to master control acquisition module 1 by the control of the second microcontroller circuit 23 by internal bus and process.The frequency signal that the second microcontroller circuit 23 adopts internal oscillator to provide carries out work.
See also Fig. 7, the power circuit diagram of described growth data acquisition module 2 comprises capacitor C 6, C22, C23, C29, C25, C26, resistance R 82, R83, R89, R90, the first integrated circuit (IC) chip N2, the second integrated circuit (IC) chip N4, diode D1 and inductance L 1, in the present embodiment, described the first integrated circuit (IC) chip N2 adopts LM5007, and the second integrated circuit (IC) chip N4 adopts TPS76333.To be converted to+5V direct supply+5V ' from the 24V power supply of master control acquisition module input by the first integrated circuit (IC) chip N2, convert 3.3V direct supply+3V3 to by second integrated circuit (IC) chip N4 general+5V direct supply+5V '.
See also Fig. 8, described growth data acquisition module 2 describes as an example of one road current collection circuit 24 example.Growth data acquisition module 2 also comprises the second multi-strobe circuit, and described the second multi-strobe circuit comprises the second multi channel selecting chip N6, resistance R 21, R22, R25, triode V22～V24.Each current collection circuit 3 pin of the base stage S4 by triode V22～V24～S6 and the second multi channel selecting chip N6 behind the second multi-strobe circuit gating are inputted the second microcontroller circuit 23 and are carried out work.The second multi channel selecting chip N6 adopts 74HC4051D.Described current collection circuit 24 comprises socket X1, Hall element chip N1 and capacitor C 7, C19.In the present embodiment, Hall element chip N1 adopts ACS712.Capacitor C 7 and capacitor C 19 are filter capacitor, Hall element chip N1 is connected with the photovoltaic conflux loop by socket X1, the dc current signal in photovoltaic conflux loop is converted to the signal that the second microcontroller circuit 23 is sampled, has also realized the safety isolation of sampling circuit and major loop simultaneously.7 pin of Hall element chip N1 are connected with 13 pin of the second multi channel selecting chip N6 of the second multi-strobe circuit, and input the second microcontroller circuit 23 carries out work behind the second multi-strobe circuit gating.Hall element chip N1 also can replace with other sensing elements, as based on the shunt of electric resistance partial pressure principle etc.
The utility model has adopted said structure, can adjust neatly the way of acquisition module, has realized the expansion of many acquisition modules; Data communication between master control acquisition module 1 and the growth data acquisition module 2 has reliable data check function, has guaranteed the reliability of data transmission; The microprocessor internal that adopts is integrated with the functions such as PGA, SDAD, temperature collect module and EEPROM FLASH, has simplified peripheral circuit, has improved system reliability and has greatly reduced cost, has overcome the shortcoming of prior art, has reached goal of the invention
Claims (5)
1.
A kind of Intelligent photovoltaic data collector that confluxes, it is characterized in that comprising one for detection of the output of photovoltaic generating system and master control acquisition module (1) and one or more the growth data acquisition modules (2) that detects for the electric current in loop that photovoltaic is respectively confluxed that environmental parameter is measured, master control acquisition module (1) is connected 2 with the growth data acquisition module) connect by internal bus (3), internal bus (3) comprises a communication line at least, realizes the exchanges data between master control acquisition module (1) and the growth data acquisition module (2).
2.
A kind of Intelligent photovoltaic according to claim 1 data collector that confluxes, it is characterized in that described master control acquisition module (1) comprises first microprocessor circuit (11), auxiliary power circuit (12), first interface circuit (13), open into circuit (14), digital output circuit (15), display circuit (16), key circuit (17), telecommunication circuit (18) and Acquisition Circuit (19), described first microprocessor circuit (11) and first interface circuit (13), open into circuit (14), digital output circuit (15), display circuit (16), key circuit (17), telecommunication circuit (18) and Acquisition Circuit (19) connect, auxiliary power circuit (12) is connected with first interface circuit (13), provides power supply by first interface circuit (13) for growth data acquisition module (2); Auxiliary power circuit (12) also with first microprocessor circuit (11), open into circuit (14), digital output circuit (15), display circuit (16), key circuit (17), telecommunication circuit (18) and be connected 19 with Acquisition Circuit) be connected, for each circuit provides power supply.
3.
A kind of Intelligent photovoltaic according to claim 2 data collector that confluxes, it is characterized in that described Acquisition Circuit (19) comprises DC0～1000V Acquisition Circuit (191), DC0(4)～20mA Acquisition Circuit (192), DC0～100mV Acquisition Circuit (193), DC0～10V Acquisition Circuit (194) and Pt100 temperature collection circuit (195), DC0～1000V Acquisition Circuit (191), DC0(4)～20mA Acquisition Circuit (192), DC0～100mV Acquisition Circuit (193), DC0～10V Acquisition Circuit (194) and Pt100 temperature collection circuit (195) are connected with first microprocessor circuit (11) respectively.
4.
A kind of Intelligent photovoltaic according to claim 1 data collector that confluxes, it is characterized in that described growth data acquisition module (2) comprises power circuit (21), the second interface circuit (22), the second microcontroller circuit (23) and one or more current collection circuit (24), power circuit (21) is connected with the second interface circuit (22) and the second microcontroller circuit (23), and the second microcontroller circuit (23) is connected with the second interface circuit (22) and current collection circuit (24).
5.
A kind of Intelligent photovoltaic according to claim 1 data collector that confluxes, the communication line that it is characterized in that described internal bus (3) is I 2 In C, SPI and the RS485 bus one or more
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| CN 201220565400 CN202870216U (en) | 2012-10-31 | 2012-10-31 | Intelligent photovoltaic confluence data collection apparatus |
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| CN 201220565400 CN202870216U (en) | 2012-10-31 | 2012-10-31 | Intelligent photovoltaic confluence data collection apparatus |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454539A (en) * | 2013-09-17 | 2013-12-18 | 无锡中科苏惠自动化技术有限公司 | Photovoltaic quality detection data automation processing system |
| CN104010387A (en) * | 2014-05-27 | 2014-08-27 | 山东华盾科技股份有限公司 | 3G wireless network communication system used for underground mine |
| CN105277840A (en) * | 2015-11-18 | 2016-01-27 | 国网山东省电力公司莱芜供电公司 | Multi-line electric leakage synchronous detection device of 220V alternating current lines |
| CN106160416A (en) * | 2016-07-29 | 2016-11-23 | 无锡市芯茂微电子有限公司 | BUCK constant-voltage control circuit |
| CN106501592A (en) * | 2016-11-18 | 2017-03-15 | 广东电网有限责任公司江门供电局 | A kind of SF6 breaker open operation electric current Real-time Collections and processing method for switched capacitor reactor |
| CN106600940A (en) * | 2017-02-04 | 2017-04-26 | 广州南珠电控技术有限公司 | ZigBee wireless bus device |
| US10097108B2 (en) | 2014-12-16 | 2018-10-09 | Abb Schweiz Ag | Energy panel arrangement power dissipation |
| US10348094B2 (en) | 2015-01-28 | 2019-07-09 | Abb Schweiz Ag | Energy panel arrangement shutdown |
| US10404060B2 (en) | 2015-02-22 | 2019-09-03 | Abb Schweiz Ag | Photovoltaic string reverse polarity detection |
-
2012
- 2012-10-31 CN CN 201220565400 patent/CN202870216U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454539A (en) * | 2013-09-17 | 2013-12-18 | 无锡中科苏惠自动化技术有限公司 | Photovoltaic quality detection data automation processing system |
| CN104010387A (en) * | 2014-05-27 | 2014-08-27 | 山东华盾科技股份有限公司 | 3G wireless network communication system used for underground mine |
| US10097108B2 (en) | 2014-12-16 | 2018-10-09 | Abb Schweiz Ag | Energy panel arrangement power dissipation |
| US10348094B2 (en) | 2015-01-28 | 2019-07-09 | Abb Schweiz Ag | Energy panel arrangement shutdown |
| US10404060B2 (en) | 2015-02-22 | 2019-09-03 | Abb Schweiz Ag | Photovoltaic string reverse polarity detection |
| CN105277840A (en) * | 2015-11-18 | 2016-01-27 | 国网山东省电力公司莱芜供电公司 | Multi-line electric leakage synchronous detection device of 220V alternating current lines |
| CN106160416A (en) * | 2016-07-29 | 2016-11-23 | 无锡市芯茂微电子有限公司 | BUCK constant-voltage control circuit |
| CN106160416B (en) * | 2016-07-29 | 2019-02-05 | 深圳市芯茂微电子有限公司 | BUCK constant-voltage control circuit |
| CN106501592A (en) * | 2016-11-18 | 2017-03-15 | 广东电网有限责任公司江门供电局 | A kind of SF6 breaker open operation electric current Real-time Collections and processing method for switched capacitor reactor |
| CN106600940A (en) * | 2017-02-04 | 2017-04-26 | 广州南珠电控技术有限公司 | ZigBee wireless bus device |
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