CN211183904U - Wi-Fi-based solar power station photovoltaic module running state detection device - Google Patents

Wi-Fi-based solar power station photovoltaic module running state detection device Download PDF

Info

Publication number
CN211183904U
CN211183904U CN202020179935.1U CN202020179935U CN211183904U CN 211183904 U CN211183904 U CN 211183904U CN 202020179935 U CN202020179935 U CN 202020179935U CN 211183904 U CN211183904 U CN 211183904U
Authority
CN
China
Prior art keywords
module
information processing
processing module
photovoltaic
photovoltaic module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202020179935.1U
Other languages
Chinese (zh)
Inventor
雷莱
梁东义
王福忠
郭江震
李润宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan University of Technology
Zhengzhou Electric Power College
Original Assignee
Henan University of Technology
Zhengzhou Electric Power College
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henan University of Technology, Zhengzhou Electric Power College filed Critical Henan University of Technology
Priority to CN202020179935.1U priority Critical patent/CN211183904U/en
Application granted granted Critical
Publication of CN211183904U publication Critical patent/CN211183904U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

Landscapes

  • Photovoltaic Devices (AREA)

Abstract

The utility model relates to the technical field of photovoltaic power generation, and discloses a Wi-Fi-based solar power station photovoltaic module running state detection device, which comprises a voltage sensor, an information processing module and a Wi-Fi communication module, wherein the secondary side of the voltage sensor is connected with the information processing module, and the information processing module is connected with the Wi-Fi communication module; each photovoltaic module is connected in parallel with a pure resistance circuit provided with an electronic switch, the primary side of the voltage sensor is respectively connected in series in the pure resistance circuit of each photovoltaic module, and each electronic switch is controlled to be switched on and off by the I/O of the information processing module. The beneficial effects are that: the output voltage and current, the ambient temperature and the solar illumination intensity of each photovoltaic module can be detected in real time. The output voltage measurement of a plurality of photovoltaic modules is realized by using one voltage sensor, so that the use number of the voltage sensors is reduced, and the cost is saved; the detection information may be wirelessly transmitted to the management terminal through Wi-Fi.

Description

Wi-Fi-based solar power station photovoltaic module running state detection device
Technical Field
The utility model relates to a photovoltaic power generation technical field especially relates to a solar power station photovoltaic module running state detection device based on Wi-Fi.
Background
Nowadays, with the increasingly prominent energy crisis and environmental pollution, photovoltaic power generation technology has been widely developed and applied as clean and renewable energy with its unique power generation characteristics. In a photovoltaic power station, a photovoltaic array is composed of photovoltaic modules (photovoltaic cell modules), and the operating state of the photovoltaic array affects the operating efficiency and stability of the whole power station. However, since the photovoltaic module is operated in a severe outdoor environment for a long time, due to the influence of various environmental factors such as thermal cycle, humidity, ultraviolet rays, shadow and the like, various faults such as local material aging, cracks, hot spots, open circuits or short circuits and the like easily occur, the service life of the photovoltaic module is influenced, and meanwhile, the generation efficiency of a power station is reduced due to the generation of the faults, and even fire disasters occur in severe cases, so that property loss is caused. Therefore, the working state of the photovoltaic module is detected on line in real time, abnormal phenomena and fault sources in the operation process of the photovoltaic module are found in time, and the reasons for the abnormal phenomena and the fault sources are eliminated quickly, so that fault diffusion can be prevented, safety accidents are avoided, energy loss caused by abnormal operation of the photovoltaic module is reduced, and the safety and the total generated energy in the whole life cycle of a photovoltaic system are improved.
In the prior art, as the number of photovoltaic modules forming a photovoltaic array of a solar power station is large, in order to save cost, a voltage sensor is not installed on each photovoltaic module, and voltage detection can not be carried out on each photovoltaic module. On the other hand, the detection device is connected with the management terminal by adopting wired connection, so that the wiring is complex and the maintenance workload is large.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model provides a solar power station photovoltaic module running state detection device based on Wi-Fi.
In order to realize the purpose, the technical scheme of the utility model is that: a Wi-Fi-based solar power station photovoltaic module running state detection device comprises a voltage detection module, an information processing module and a wireless communication Wi-Fi communication module, wherein the voltage detection module is a voltage sensor, a secondary side output/input end of the voltage sensor is connected with a first input/output end of the information processing module, and a first output end of the information processing module is connected with a first input end of the Wi-Fi communication module; and each photovoltaic module is connected in parallel with a pure resistance circuit provided with an electronic switch, the primary side of the voltage sensor is respectively connected in series in the pure resistance circuit of each photovoltaic module, and each electronic switch is controlled to be switched on and off by the I/O of the information processing module.
Preferably, the information processing system further comprises a plurality of decoders, each decoder controls a plurality of electronic switches, each decoder is connected with an I/O output port of the information processing module, and the electronic switches are switched through the decoders, so that the number of the I/O output ports on the information processing module can be effectively saved, and more electronic switches can be controlled.
Preferably, the photovoltaic module further comprises a current detection module for detecting the output current of each photovoltaic module, a temperature detection module for collecting the ambient temperature and an illumination intensity detection module for collecting the illumination intensity of solar energy; the first output end of the current detection module is connected with the second input end of the information processing module, the first output end of the temperature detection module is connected with the third input end of the information processing module, and the first output end of the illumination intensity detection module is connected with the fourth input end of the information processing module.
The utility model has the advantages that: the output voltage and current, the ambient temperature and the solar illumination intensity of each photovoltaic module of the solar power station can be detected in real time. The output voltage measurement of a plurality of photovoltaic modules can be realized by using one voltage sensor, so that the use number of the voltage sensors is reduced, and the cost is saved; meanwhile, the Wi-Fi communication module is arranged, detection information can be wirelessly transmitted to the management terminal through Wi-Fi, wiring is simple, and reliability is high.
Drawings
Fig. 1 is a schematic block diagram of a connection structure according to embodiment 1 of the present invention.
Fig. 2 is a block diagram of the structure of embodiment 2 of the present invention.
Fig. 3 is a schematic circuit diagram of a voltage detection module according to embodiment 2 of the present invention.
Fig. 4 is a schematic circuit diagram of a current detection module according to embodiment 2 of the present invention.
Fig. 5 is a schematic circuit diagram of the ambient temperature detection module according to embodiment 2 of the present invention.
Fig. 6 is a schematic circuit diagram of the illumination intensity detection module according to embodiment 2 of the present invention.
Fig. 7 is a schematic circuit diagram of a Wi-Fi communication module according to embodiment 2 of the present invention.
Fig. 8 is a schematic circuit diagram of an information processing module according to embodiment 2 of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
Example 1
The Wi-Fi-based solar power station photovoltaic module running state detection device comprises a voltage detection module, an information processing module and a wireless communication Wi-Fi communication module, wherein the voltage detection module is a voltage sensor, a secondary side output/input end of the voltage sensor is connected with a first input/output end of the information processing module, and a first output end of the information processing module is connected with a first input end of the Wi-Fi communication module; and each photovoltaic module is connected in parallel with a pure resistance circuit provided with an electronic switch, the primary side of the voltage sensor is respectively connected in series in the pure resistance circuit of each photovoltaic module, and each electronic switch is controlled to be switched on and off by the I/O of the information processing module.
Example 2
A certain solar power station is provided with a plurality of photovoltaic modules, in the embodiment, 64 photovoltaic modules are taken as a unit, the 64 photovoltaic modules form 8-by-8 distribution, namely 8 branches, and each branch comprises 8 photovoltaic modules; the principle of the photovoltaic module is the same except for the unit described in this embodiment, and those skilled in the art can select an accessory with a specification and a model according to the following specific implementation contents.
The specific implementation content of this embodiment is as follows:
the Wi-Fi-based solar power station photovoltaic module running state detection device comprises a voltage detection module (1) for collecting 8 × 8 photovoltaic module output voltages, a current detection module (2) for collecting output currents of 64 photovoltaic modules of 8 branches, 1 temperature detection module (3) for collecting ambient temperature, an illumination intensity detection module (4) for collecting solar illumination intensity, an information processing module (5) and a Wi-Fi communication module (6) for performing wireless communication. The first output/input end (101) of the voltage detection module (1) is connected with the first input/output end (501) of the information processing module (5), the first output end (201) of the current detection module (2) is connected with the second input end (502) of the information processing module (5), the first output end (301) of the temperature detection module (3) is connected with the third input end (503) of the information processing module (5), the first output end (401) of the illumination intensity detection module (4) is connected with the fourth input end (504) of the information processing module (5), and the first output end (505) of the information processing module (5) is connected with the first input end (601) of the Wi-Fi communication module (6).
The basic principle of the embodiment is as follows: the information processing module selects STM32F407ZGT6 ARM. The information processing module passes through voltage detection module (1), current detection module (2), temperature detection module (3), and illumination intensity detection module (4) obtain signals such as voltage, electric current, illumination intensity, ambient temperature of photovoltaic module running state to send these signals to the internet through wireless Wi-Fi communication module (6), realize the remote monitoring.
Fig. 3 is a schematic circuit diagram of the voltage detection module (1) according to this embodiment. As shown in fig. 3, the voltage detection module is a voltage sensor, and in order to reduce the voltage sensors used and save cost, one voltage sensor is used to detect the output voltages of 8 × 8=64 photovoltaic modules, and each photovoltaic module is switched by one switch, which requires 64 electronic switches. The working principle is as follows: when the output voltage of a certain assembly needs to be measured, the corresponding electronic switch is closed, other switches are all opened, namely the potentials at the two ends of the assembly are sent to the voltage sensor, so that the voltage measurement can be conveniently carried out, and the voltage of all the photovoltaic array monomer assemblies can be measured by analogy in turn.
The electronic switches (U00-U77) select an optocoupler relay AQW214EH, and are controlled to be switched on and off by the I/O of the information processing module. In order to reduce I/O consumption of a processor as much as possible, 4-chip 4-16 line decoders are added in front of the optocoupler relay AQW214EH, and each decoder controls 16 switches to expand the number of I/O outputs. For each 4-16-line decoder chip, the decoding function can be realized only by 4 address input ends and 1 control enabling end, and the four decoders are respectively connected with PB 00-PB 07I/O output ports of a first input/output end (501) of the information processing module (5).
A voltage sensor is a L V25-P type sensor of L EM company, L V25-P is adopted, signal collection can be carried out, and electrical isolation between a main loop and a control loop is realized, as shown in figure 3, when the L V25-P type sensor is used, a large resistor R1 is connected in series on the primary side to convert a voltage signal into a small current signal (the current is in proportion to the voltage), a resistor R2 is connected in series on the secondary side to convert the current into the voltage, the current ratio of the primary side and the secondary side in L EM L V25-P is 10mA/25mA, so that the voltage ratio is determined by the resistors on the two sides, the resistors R1 and R2 are determined according to formula (1), an operational amplifier L M324 module in figure 3 plays the role of a voltage follower, an output signal of an L V25-P type voltage sensor is sent to an input port 0 of a first PC input/output terminal (501) of an information processing module (5) through an output interface of a connection terminal 101 through an operational amplifier L M324.
Fig. 4 is a schematic circuit diagram of the current detection module (2) according to this embodiment. As shown in fig. 4, since the photovoltaic array of the solar power station is formed by connecting a plurality of photovoltaic modules in series and parallel, the output current of the photovoltaic module on each branch in series is the same. For this reason, this embodiment realizes the current detection of the photovoltaic module of 8 parallel branch roads. WCS270 type current detection sensor is selected for use in current detection module (2), and this module has 2 binding post to the outside, and wherein terminal J2 connects the measured current, and terminal 4 of J1 is power (+ 5V) and analog output binding post. The output analog quantities of the 8 current sensors are sent to PA.0-PA.7 input ports of a second input end (502) of the information processing module (5) through a 201 output end.
Fig. 5 is a schematic circuit diagram of the ambient temperature detection module (3) according to this embodiment. As shown in fig. 5, the environmental temperature detection module is a waterproof thermal resistance integrated temperature transmitter of makes WZPB-231, and the temperature transmitter is composed of a thermal resistance temperature sensor and a two-wire solid electronic unit. The WZPB-231 temperature transmitter adopts two-wire connection, an output terminal is connected with 24VDC, 4-20 mA is output and sent to the vicinity of STM32F407ZGT6 to be converted into 1-5VDC through a 250 omega resistor, and the converted VDC is sent to a PC01 input port of a third input end (503) of an information processing module (5) through a port (301).
Fig. 6 is a schematic circuit diagram of the illumination intensity detection module (4) according to this embodiment, as shown in fig. 6, the illumination intensity detection module (light intensity detection module) employs a silicon photocell S1133. the principle of the illumination intensity detection module is that the forward input terminal of the operational amplifier is connected to GND, the reverse input terminal of the operational amplifier is connected to the positive terminal of the silicon photocell S1133, and the negative terminal of the photocell is grounded, according to the virtual disconnection principle of the operational amplifier, the inverting terminal of the operational amplifier has no current flowing in and out, so the values of the silicon photocell current and the feedback resistor current are equal, the voltage drop across the feedback resistor RF is U = RF × IF = RF × IB, where IB is the silicon photocell current and IF is the feedback resistor current, and because the potential of the inverting terminal of the operational amplifier (negative terminal of the silicon photocell) is approximately equal to ground, the output:
U0=RF×IF=RF×IB，
as can be seen from the calculation, the final output analog voltage range is 0-4.8V, and is sent to the PC02 input port of the fourth input terminal (504) of the information processing module (5) through the port (401).
Fig. 7 is a schematic circuit diagram of a Wi-Fi communication module (6) according to this embodiment, as shown in fig. 7, in order to meet the requirements of low power consumption and hardware cost and shortening the development cycle when the photovoltaic module operation state detection system is developed and used, an ATK-ESP8266 wireless Wi-Fi module manufactured by a company a L iettek is selected, and a core control chip of the Wi-Fi module is an ESP8266 chip manufactured by a company ai-thinker.
Fig. 8 is a circuit diagram of an information processing module (5) according to this embodiment, as shown in fig. 8, the information processing module selects stm32f407zgt6arm, the power supply is 3.3V, the analog power supply VDDA ensures the stability of the power supply by supplying the 3.3V power supply through the filter circuit, the reset circuit of the processing module is composed of R1, R2, C5, C6 and a reset button, the nrst system clock circuit connected to the information processing module is composed of C1, C2 and a crystal oscillator Y1, Y1 is a crystal oscillator of HSE25 MHz, the secondary clock source circuit is composed of C3, C4 and a crystal oscillator Y2 and uses a 32.768 KHz low-speed external crystal oscillator (8 SE crystal oscillator) for driving the PA0 to PA 27 interfaces of the information processing module (RTCC L K), the PA interfaces of the information processing module are connected to the PB (2) terminal 201 of the current detection module, the communication interface 505 of the information processing module, the information processing module is connected to the RTC 4642 terminal 686 terminal of the PC processing module, the PC interface 201 of the RTCC 463-466K, the PC interface is connected to the PC module PC interface 201 of the PC processing module, the PC interface 401 is connected to the PC module, the PC interface detects the PC module, and the PC module 401, the PC module.
The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.

Claims (3)

1. The utility model provides a solar power station photovoltaic module running state detection device based on Wi-Fi which characterized in that: the Wi-Fi communication module comprises a voltage detection module, an information processing module and a Wi-Fi communication module, wherein the voltage detection module is a voltage sensor, a secondary output/input end of the voltage sensor is connected with a first input/output end of the information processing module, and a first output end of the information processing module is connected with a first input end of the Wi-Fi communication module; and each photovoltaic module is connected in parallel with a pure resistance circuit provided with an electronic switch, the primary side of the voltage sensor is respectively connected in series in the pure resistance circuit of each photovoltaic module, and each electronic switch is controlled to be switched on and off by the I/O of the information processing module.
2. The Wi-Fi based solar power station photovoltaic module operating condition detection apparatus of claim 1, wherein: the system also comprises a plurality of decoders, wherein each decoder respectively controls a plurality of electronic switches, and each decoder is respectively connected with the I/O output port of the information processing module.
3. The Wi-Fi based solar power station photovoltaic module operating state detection apparatus according to claim 1 or 2, wherein: the photovoltaic module also comprises a current detection module for detecting the output current of each photovoltaic module, a temperature detection module for collecting the ambient temperature and an illumination intensity detection module for collecting the illumination intensity of solar energy; the first output end of the current detection module is connected with the second input end of the information processing module, the first output end of the temperature detection module is connected with the third input end of the information processing module, and the first output end of the illumination intensity detection module is connected with the fourth input end of the information processing module.
CN202020179935.1U 2020-02-18 2020-02-18 Wi-Fi-based solar power station photovoltaic module running state detection device Active CN211183904U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020179935.1U CN211183904U (en) 2020-02-18 2020-02-18 Wi-Fi-based solar power station photovoltaic module running state detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020179935.1U CN211183904U (en) 2020-02-18 2020-02-18 Wi-Fi-based solar power station photovoltaic module running state detection device

Publications (1)

Publication Number Publication Date
CN211183904U true CN211183904U (en) 2020-08-04

Family

ID=71805107

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020179935.1U Active CN211183904U (en) 2020-02-18 2020-02-18 Wi-Fi-based solar power station photovoltaic module running state detection device

Country Status (1)

Country Link
CN (1) CN211183904U (en)

Similar Documents

Publication Publication Date Title
CN104485888A (en) Control system for monitoring outdoor real-time power generation and operation of photovoltaic components
CN201697962U (en) Integrated intelligent testing and controlling module
CN210640852U (en) Photovoltaic power generation system with module fault detection and elimination function
CN211183904U (en) Wi-Fi-based solar power station photovoltaic module running state detection device
CN204314449U (en) A kind of auto testing instrument being applied to intelligent electric meter production line
CN110554228A (en) method and system for recording uncovering detection of stop running state of electric meter
TWM636645U (en) Solar energy monitoring shutoff device with high-voltage DC input capability and one-to-many connecting function
CN201392354Y (en) Electric energy metering device of modularized assembly
CN211239848U (en) Detection mainboard
CN109142470A (en) Arrangement for detecting and identifying system
CN111650868A (en) Micro-power consumption multifunctional integrated data acquisition unit
CN211627758U (en) Voltage output and switching value output detection device for wireless remote controller
CN100504944C (en) Electric disaster hidden-trouble on-line monitoring alarming apparatus
CN202395741U (en) Single-pole double-throw electronic switch with single wire system
CN203250192U (en) Intelligent control system for high-temperature industrial television
CN203232092U (en) PCB voltage test circuit and tool
CN208043899U (en) A kind of transformation of low-power consumption DC high voltage linear photoconductor and isolating device
CN208060630U (en) A kind of modular multichannel test system
CN102540071B (en) Relay device and relay life test device
CN204614204U (en) A kind of expansion stops powering on the multi-functional communications proving installation of test function
CN114646893A (en) Multi-power-supply fault rapid self-detection circuit of debris flow earth sound monitoring module
JP5311495B2 (en) Solar cell module
CN201503447U (en) Modularly assembled electric power metering device
CN106411250B (en) A kind of cathode photovoltaic controller system altogether
TWI782456B (en) Solar Management System

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant