CN114414924A - Distributed T-connection photovoltaic wireless access acquisition system and method - Google Patents
Distributed T-connection photovoltaic wireless access acquisition system and method Download PDFInfo
- Publication number
- CN114414924A CN114414924A CN202210087270.5A CN202210087270A CN114414924A CN 114414924 A CN114414924 A CN 114414924A CN 202210087270 A CN202210087270 A CN 202210087270A CN 114414924 A CN114414924 A CN 114414924A
- Authority
- CN
- China
- Prior art keywords
- module
- data
- distributed
- switching value
- information
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 238000012545 processing Methods 0.000 claims description 29
- 238000004891 communication Methods 0.000 claims description 19
- 230000003287 optical effect Effects 0.000 claims description 16
- 238000009826 distribution Methods 0.000 abstract description 10
- 238000013480 data collection Methods 0.000 abstract 2
- 238000012544 monitoring process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 235000015429 Mirabilis expansa Nutrition 0.000 description 1
- 244000294411 Mirabilis expansa Species 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000013536 miso Nutrition 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004092 self-diagnosis Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a distributed T-connection photovoltaic wireless access acquisition system and a method thereof, which comprises a microprocessor module, a signal acquisition module and a data transmission module, by acquiring circuit data parameters of distributed photovoltaic accessed to the power distribution network in a T connection mode, data of a photovoltaic station is processed by a microprocessor module, the obtained power grid information and the switching value information are encrypted, then confidential data are transmitted to the server platform through the data transmission module, the server platform analyzes the collected data, and the access point analyzes the influence of voltage distribution and line loss to obtain the access capacity, position and power factor of the distributed photovoltaic on the influence of the voltage and line loss distribution, so that corresponding suggestions are provided for the distributed photovoltaic to be connected into a low-voltage power grid, the structure is simple, the data collection precision is improved, and the comprehensive data collection can be realized.
Description
Technical Field
The invention belongs to the technical field of photovoltaic power stations, and particularly relates to a distributed T-connection photovoltaic wireless access acquisition system and method.
Background
The energy is indispensable in modern social production, and large-scale distributed photovoltaic power supply begins to insert the distribution network and moves in a grid-connected mode, and after a large amount of distributed photovoltaic power supply inserts the distribution network system, because photovoltaic power supply power generation characteristic and access mode are different with traditional power, also bring certain influence to the operation management of distribution network simultaneously. When the distributed power supply is connected to a power grid, certain influences are generated on node voltage, power quality, system protection, reliability, short-circuit current and the like, and the influences on a power system after the distributed power supply is connected to the power grid need to be quantitatively researched so as to provide a method for eliminating various adverse influences. The method has the advantages that the voltage, current, active power, reactive power, phase angle and other parameters of key points of the distributed power supply during grid-connected operation are monitored in real time, and the method has important practical significance for mastering the actual load change of the power grid and guiding the safe and economic operation of the power grid.
According to the requirements of the distributed power supply grid connection technical requirement (GB/T33593-2017) and the distributed power supply dispatching operation management specification (Q/GDW 11271-2014), the distributed power supplies with 10kV and 35kV voltage levels for grid connection are connected into a dispatching automation system, and the connected operation information comprises the state of grid connection equipment, the voltage of a grid connection point, current, active power, reactive power and generated energy. Aiming at the current situation of distributed photovoltaic access, a collection scheme of distributed photovoltaic is required to be formulated at present, and real-time collection of distributed photovoltaic data of 10kV or more is gradually realized.
Because 10kV and 35kV T-connection access photovoltaic power stations are mostly in remote areas, the difficulty in building a comprehensive data network is high, the real-time collection of photovoltaic data cannot be realized, and the operation information of the photovoltaic data cannot be mastered in power dispatching.
Disclosure of Invention
The invention aims to provide a distributed T-connection photovoltaic wireless access acquisition system and a distributed T-connection photovoltaic wireless access acquisition method, so as to overcome the defects of the prior art.
A distributed T-connection photovoltaic wireless access acquisition system comprises a microprocessor module, a signal acquisition module and a data transmission module;
the signal acquisition module is used for acquiring power grid information and switching value information and transmitting the acquired power grid information and switching value information to the microprocessor module;
the microprocessor module is used for encrypting the acquired power grid information and the switching value information and then transmitting the confidential data to the server platform through the data transmission module.
Preferably, the power grid information comprises three-phase voltage, three-phase current, active electric quantity, reactive electric quantity and a phase angle; the switching value signal is interrupted.
Preferably, the microprocessor module is connected with a touch screen display module for displaying system data and manually controlling and setting.
Preferably, the microprocessor module comprises a processing module and an encryption module, the signal acquisition module transmits the acquired power grid information and the acquired switching value information to the processing module, the processing module encrypts the power grid information and the switching value information through the encryption module, and the processing module transmits the encrypted information to the server platform through the data transmission module.
Preferably, the data transmission module adopts a GPRS data module or network port data communication.
Preferably, the touch screen display module adopts a DMT80480T050 touch screen.
Preferably, the signal acquisition module comprises a 485 data acquisition module and a switching value acquisition module.
Preferably, the switching value acquisition module specifically includes an optical coupler isolator U12, a resistor R85 and a resistor R84, one end of the resistor R85 is connected with the switch J9, the other end of the resistor R85 is connected with a pin 1 of the optical coupler isolator U12, a pin 2 of the optical coupler isolator U12 is grounded, a pin 4 of the optical coupler isolator U12 is one end of an output single-time connection resistor R84, the other end of the resistor R84 is connected with a power supply, and a pin 3 of the optical coupler isolator U12 is grounded.
A distributed T-connection photovoltaic wireless access acquisition method comprises the following steps:
s1, acquiring power grid information and switching value information in real time, and encrypting the acquired power grid information and switching value information;
and S2, transmitting the encrypted data to the server platform.
Preferably, the power grid information and the switching state of the switching value are acquired through an I/O bus FZ1/FZ2, the acquired power grid information and switching state data are sent to an encryption module through an SPI bus, the data are encrypted, the encrypted data are read to a processing module, the processing module sends the encrypted data to a GPRS communication module through a serial port 4(RXD4/TXD4), and the communication module wirelessly sends the data meeting the requirements.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention relates to a distributed T-connection photovoltaic wireless access acquisition system which comprises a microprocessor module, a signal acquisition module and a data transmission module, wherein circuit data parameters of distributed photovoltaics accessed to a power distribution network in a T-connection mode are acquired, data of a photovoltaic station pass through the microprocessor module to encrypt acquired power grid information and switching value information, then confidential data are transmitted to a server platform through the data transmission module, the server platform analyzes the influence of voltage distribution and line loss through analysis of the acquired data, and the influence of the access point on the voltage distribution and the line loss distribution is obtained, so that corresponding suggestions are provided for the distributed photovoltaic access to a low-voltage power grid, the structure is simple, the acquisition precision of the data is improved, and the acquisition of comprehensive data can be realized.
Specifically, the distributed power supply is connected to a power grid, and influences on a power system after the distributed power supply is connected to the power grid can be quickly obtained by collecting node voltage, power quality, system protection, reliability and short-circuit current, so that various adverse effects can be eliminated. The method has the advantages that parameters such as voltage, active power, reactive power, relative power angle and the like of key points of the distributed power supply during grid-connected operation are monitored in real time, and the method has important engineering practical significance for mastering the actual static and dynamic behaviors of the power grid and guiding the safe and economic operation of the power grid.
The device provides an economic and safe access mode for the photovoltaic power station, is small and exquisite, convenient and simple to install, can accurately, real-timely and completely collect and upload the operation information of the T-connection photovoltaic power station to a dispatching automation system, and realizes the functions of remote monitoring, protection and metering.
Drawings
Fig. 1 is a schematic diagram of a system structure according to an embodiment of the present invention.
Fig. 2 is a schematic circuit diagram of a switching value acquisition module according to an embodiment of the present invention.
Fig. 3 is a schematic circuit diagram of a data acquisition module according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, a distributed T-junction photovoltaic wireless access acquisition system includes a microprocessor module, a signal acquisition module and a data transmission module, where the signal acquisition module is configured to acquire power grid information and switching value information and transmit the acquired power grid information and switching value information to the microprocessor module, and the microprocessor module is configured to encrypt the acquired power grid information and switching value information, and then transmit confidential data to a server platform through the data transmission module.
Specifically, the collected power grid information comprises three-phase voltage, three-phase current, active electric quantity, reactive electric quantity and a phase angle; the switching value signal is interrupted.
The microprocessor module is connected with a touch screen display module and is used for displaying system data and manually controlling and setting;
the microprocessor module comprises a processing module and an encryption module, the signal acquisition module transmits the acquired power grid information and the acquired switching value information to the processing module, the processing module encrypts the power grid information and the switching value information through the encryption module, and the processing module transmits the encrypted information to the server platform through the data transmission module.
The processing module is connected with the encryption module through an SPI bus, the encryption module transmits encrypted data back to the processing module, the processing Module (MCU) transmits the data to the data transmission module through a serial port 4, the data transmission module adopts a wireless transmission module, particularly a GPRS data module, and the GPRS data module (ME3630) transmits the data to the access server platform through a 4G wireless network; the processing Module (MCU) can also select network port data communication through a serial port; the data communication supports a DL/T645-2007 protocol, the data communication conforms to a 104 protocol of a DL/T634 standard with the main station, and meanwhile, the device is provided with an interface for displaying a man-machine conversation through a touch screen and is communicated with the touch screen through an MCU virtual serial port.
After the server platform receives the data through the GPRS server and decrypts the data through the microprocessor module, the data are accessed to the server platform, so that a dispatcher can master the running condition of the photovoltaic transformer substation in time and know data parameters such as three-phase voltage, three-phase current, active electric quantity, reactive electric quantity, switching value (on-off state) and phase angle in time.
The device can acquire total three-phase voltage and current at the low-voltage side in real time, realize the monitoring function, and can calculate voltage deviation, frequency deviation, three-phase voltage/current unbalance rate, split-phase and three-phase active and reactive power and four-quadrant accumulated electric quantity according to the monitored data; 2 groups of switch quantity and displacement signals are collected, and the position state, the tripping state and the cabinet door opening and closing state signals of the transformer low-voltage main circuit breaker are collected.
The microprocessor module is connected with the signal acquisition module through an interface, and the signal acquisition module comprises a 485(HM3085EESA) data acquisition module and a switching value acquisition module; the 485 data acquisition module is communicated with the residual current operated protector, so that the on/off state, the residual current value, the voltage/current and the event alarm information of the residual current operated protector can be monitored.
The low-voltage switch position information acquisition function: position information of a low-voltage incoming and outgoing line switch is acquired through a 485 data acquisition module;
the signal acquisition module is adopted to realize the function of monitoring the state of the transformer: the oil temperature, the gas protection state of the oil-immersed transformer, the gear state of the on-load voltage/capacity regulating transformer, the winding temperature of the dry-type transformer and the fan state information can be monitored;
the signal acquisition module is adopted to realize the environment state monitoring function: the temperature and the humidity of the transformer substation are monitored, and the temperature and the humidity can be automatically adjusted by matching with a fan and a dehumidifier;
the processing module is connected with a storage module and used for storing 1024 events for at least three months.
The processing module can modify and read parameters and fixed values according to local and remote modes; the program can be upgraded locally and remotely, and the program upgrade supports breakpoint continuous transmission; the device has the functions of hot plug, self diagnosis and self recovery, and can transmit alarm information in case of failure and automatically reset in case of abnormality.
The processing module performs data statistics according to the stored data: the data can be counted and recorded according to the day, the counting time is 1 year, and the statistical data support remote calling. The statistical data comprises the voltage qualification rate, the total active electric quantity, the peak active electric quantity, the reverse reactive electric quantity and the reverse reactive electric quantity; an average load rate; the daily heavy overload times, time and daily running time comprise the maximum and minimum values of voltage, current, power and distortion rate;
the touch screen display module can realize an indication function, has state indication of operation, communication, remote signaling and the like, and locally displays abnormal information in case of abnormal conditions; when the self-fault occurs, fault information is displayed;
the encryption module realizes a safety encryption function: information acquisition and data transmission are realized by encryption, a server is remotely accessed, and safety is ensured by means of digital certificates, bidirectional authentication and signature verification.
The touch screen display module adopts a DMT80480T050 touch screen, and can realize serial port communication; 800x480 resolution; 262K color, IPS screen, wide view angle, industrial grade capacitive touch screen based on DGUS II system; the touch screen is respectively connected with IAP15W4K58S4 for communication through serial port buses CSLD, SID and SCLK, so as to realize man-machine conversation.
The microprocessor module is connected with a power supply module, all capacitors used on the power supply side in the circuit, including polar capacitors and nonpolar capacitors, are filter circuits, the filtering of the digital power supply is realized, and the power supply module adopts an industrial power supply module.
As shown in fig. 3, the 485 data acquisition module is used for acquiring data and can acquire total three-phase voltage, three-phase current, active electric quantity, reactive electric quantity and phase angle of the low-voltage side in real time; the 485 data acquisition module adopts a receiver which is packaged by HM3085EESA 8P-SOP and has real failure protection, the data acquisition module also has a strong slew rate control function and is beneficial to realizing error-free data transmission, a 1nA low-current turn-off mode, an LVT-817S optical coupling isolation circuit is respectively added at the connection part of data and an MCU serial port in the application process, the normal communication of the MCU and the HM3085EESA is protected, a data input end is connected with a transient suppression diode P6KE6.8CA, and a data acquisition circuit is effectively protected.
The encryption module is used for longitudinal and secret processing of data and meets the safety requirements of data communication of the power department; particularly, a HSC32K1-C1V12 chip and on-chip key management (including key generation, storage, updating and the like) are adopted; the on-chip RSA and ECC (SM2) coprocessor is used for realizing digital signature and identity authentication; SM3, SHA hardware algorithm kernel in the slice; SM1, SM4 and DES (TDES) hardware algorithm cores on chip; various communication interfaces of USB, SPI, UART and 7816 main interfaces are supported; supporting various safety management controls;
packaging form: SSOP20, QFN32, QFN48, black colloid, Wafer/Die, etc.; the RSA algorithm: 1024 bit signature speed 76.9 times/second @48 MHz; 2048 bit signature speed 17.2 times/sec @48 MHz; SM2 algorithm: signature speed 111 times/second @48 MHz;
SM2 algorithm: the encryption speed is 45.5 times/second @48 MHz; SM1 algorithm: 3.0Mbps @24 MHz; SM4 Algorithm 3.0Mbps @24 MHz; SSF33 Algorithm 3.0Mbps @24 MHz; SM3 Algorithm 5.0Mbps @24 MHz; TDES algorithm 2.0Mbps @24 MHz; the SHA algorithm is 5.0Mbps @24 MHz; the TRNG data rate of the true random number generator can reach: 512Kbps @24 MHz. The encryption chip is respectively connected through SPI buses SS, SCK, MISO, MOSI and MCU (IAP15W4K58S4) to realize data encryption processing.
The GPRS data module adopts an ME3630 module, has an LTE seven-module full-network communication function, is seamlessly connected with three networks, supports a TD-LTE private network 1.4GHz/1.8GHz and an LTE Cat.4/Cat.1, has a downlink speed up to 150Mbps/10Mbps, is higher in speed, smaller in delay, encapsulated in an LCC stamp hole interface, convenient to debug and produce, small in size and ultrathin in design, adapts to more scenes and wide-temperature design, can support-40-85 ℃, supports low power consumption and remote awakening, supports a high-speed USB 2.0 interface and a UART interface, supports a diversity antenna interface and supports a full-network communication module with a GNSS function; the module is respectively connected and communicated with an MCU (IAP15W4K58S4) through CTS, RTS, TXD4, RTD4 pins, and is used for sending encrypted data to the remote data sending module and sending the data to a remote access dispatching automation platform;
as shown in fig. 2, the switching value acquisition module circuit is used for accessing the passive switching value of the switch, and in the present application, acquired information is respectively connected by FK1, FK2 and MCU (IAP15W4K58S4) in a photocoupling and isolation (TLP785GB) manner, and is judged and processed by the MCU and sent to the server platform of remote scheduling; the switching value acquisition module specifically comprises an optical coupler isolator U12, a resistor R85 and a resistor R84, one end of the resistor R85 is connected with a switch J9, the other end of the resistor R85 is connected with a pin 1 of the optical coupler isolator U12, a pin 2 of the optical coupler isolator U12 is grounded, a pin 4 of the optical coupler isolator U12 is one end of an output list which is connected with the resistor R84 at the same time, the other end of the resistor R84 is connected with a power supply, and a pin 3 of the optical coupler isolator U12 is grounded.
Temperature and humidity detection circuit: in the T/H part of the schematic diagram, an industrial-grade Jinnan electronic technology greenhouse sensor (RS-WS-N01-2) is adopted for monitoring temperature and humidity changes of a photovoltaic field, collected data SHT20_ SCL and SHT20_ SDA are respectively connected with an MCU (IAP15W4K58S4), and the collected data SHT20_ SCL and the collected data SHT20_ SDA are judged, processed and sent to a remote dispatching automation platform through the MCU.
The serial port-to-Ethernet module (USR-TCP232-T2) in the serial port-to-Ethernet module adopts a human-technology module, and the module is connected with an MCU (IAP15W4K58S4) serial port 2 through USR _ RST, USR _ CFG, RXD2, TXD2, so that network transmission of data is realized, and the device can also transmit the data through a wired data network.
A singlechip IAR15W4K58S4 data processing part in the processing module, which is a system master control part, reads 485 acquired data (voltage, current, active power, reactive power, active electric quantity, reactive electric quantity, total distortion rate, unbalance degree, active loss and reactive loss) through RXD1 and TXD 1; collecting power grid information and the switching state of the switching value through an I/O bus FZ1/FZ 2; the collected power grid information and the collected switching value state data are sent to an encryption module through an SPI bus, the data are encrypted, the encrypted data are read to a processing module, the processing module sends the encrypted data to a GPRS communication module through a serial port 4(RXD4/TXD4), and the communication module sends the data meeting the requirements to a remote server platform in a wireless mode.
Claims (10)
1. A distributed T-connection photovoltaic wireless access acquisition system is characterized by comprising a microprocessor module, a signal acquisition module and a data transmission module;
the signal acquisition module is used for acquiring power grid information and switching value information and transmitting the acquired power grid information and switching value information to the microprocessor module;
the microprocessor module is used for encrypting the acquired power grid information and the switching value information and then transmitting the confidential data to the server platform through the data transmission module.
2. The distributed T-junction photovoltaic wireless access acquisition system according to claim 1, wherein the grid information includes three-phase voltage, three-phase current, active electric quantity, reactive electric quantity, and phase angle; the switching value signal is interrupted.
3. The distributed T-junction photovoltaic wireless access collection system of claim 1, wherein the microprocessor module is connected to a touch screen display module for display of system data and manual operation and control settings.
4. The distributed T-connection photovoltaic wireless access acquisition system of claim 1, wherein the microprocessor module comprises a processing module and an encryption module, the signal acquisition module transmits the acquired power grid information and the switching value information to the processing module, the processing module encrypts the power grid information and the switching value information through the encryption module, and the processing module transmits the encrypted information to the server platform through the data transmission module.
5. The distributed T-junction photovoltaic wireless access collection system of claim 1, wherein the data transmission module employs a GPRS data module or a portal data communication.
6. The distributed T-junction photovoltaic wireless access collection system of claim 3, wherein the touch screen display module is DMT80480T050 touch screen.
7. The distributed T-junction photovoltaic wireless access acquisition system of claim 1, wherein the signal acquisition module comprises a 485 data acquisition module and a switching value acquisition module.
8. The distributed T-connection photovoltaic wireless access acquisition system of claim 1, wherein the switching value acquisition module specifically comprises an optical coupler isolator U12, a resistor R85 and a resistor R84, one end of the resistor R85 is connected with a switch J9, the other end of the resistor R85 is connected with a pin 1 of an optical coupler isolator U12, a pin 2 of the optical coupler isolator U12 is grounded, a pin 4 of the optical coupler isolator U12 is an output single and simultaneously connected with one end of the resistor R84, the other end of the resistor R84 is connected with a power supply, and a pin 3 of the optical coupler isolator U12 is grounded.
9. A distributed T-junction photovoltaic wireless access acquisition method based on the system of claim 1, comprising the steps of:
s1, acquiring power grid information and switching value information in real time, and encrypting the acquired power grid information and switching value information;
and S2, transmitting the encrypted data to the server platform.
10. The distributed T-connection photovoltaic wireless access acquisition method of claim 9, wherein the power grid information and the switching state of the switching value are acquired through an I/O bus FZ1/FZ2, the acquired power grid information and the switching state data are sent to an encryption module through an SPI bus, the data are encrypted, the encrypted data are read to a processing module, the processing module sends the encrypted data to a GPRS communication module through a serial port 4(RXD4/TXD4), and the communication module wirelessly sends the data meeting requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210087270.5A CN114414924A (en) | 2022-01-25 | 2022-01-25 | Distributed T-connection photovoltaic wireless access acquisition system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210087270.5A CN114414924A (en) | 2022-01-25 | 2022-01-25 | Distributed T-connection photovoltaic wireless access acquisition system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114414924A true CN114414924A (en) | 2022-04-29 |
Family
ID=81277771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210087270.5A Pending CN114414924A (en) | 2022-01-25 | 2022-01-25 | Distributed T-connection photovoltaic wireless access acquisition system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114414924A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337308A (en) * | 2015-10-23 | 2016-02-17 | 南京南瑞集团公司 | Grid-side regional distributed photovoltaic operation and maintenance management system and management method |
| CN207780965U (en) * | 2017-12-29 | 2018-08-28 | 国网浙江建德市供电有限公司 | A kind of safe power station information acquisition system |
| CN109302468A (en) * | 2018-09-25 | 2019-02-01 | 许继集团有限公司 | A kind of interface arrangement and monitoring system of the interconnection of distributed electrical source information |
| CN209070345U (en) * | 2019-04-24 | 2019-07-05 | 南京理工大学工程技术研究院有限公司 | A kind of multisensor guidance control system based on Internet of Things |
| WO2019192040A1 (en) * | 2018-04-26 | 2019-10-10 | 江苏金润龙科技股份有限公司 | Wind-photovoltaic-diesel intelligent alternating current microgrid system |
| CN111130220A (en) * | 2020-01-15 | 2020-05-08 | 青海绿能数据有限公司 | Device of distributing type photovoltaic power plant information acquisition and control |
-
2022
- 2022-01-25 CN CN202210087270.5A patent/CN114414924A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337308A (en) * | 2015-10-23 | 2016-02-17 | 南京南瑞集团公司 | Grid-side regional distributed photovoltaic operation and maintenance management system and management method |
| CN207780965U (en) * | 2017-12-29 | 2018-08-28 | 国网浙江建德市供电有限公司 | A kind of safe power station information acquisition system |
| WO2019192040A1 (en) * | 2018-04-26 | 2019-10-10 | 江苏金润龙科技股份有限公司 | Wind-photovoltaic-diesel intelligent alternating current microgrid system |
| CN109302468A (en) * | 2018-09-25 | 2019-02-01 | 许继集团有限公司 | A kind of interface arrangement and monitoring system of the interconnection of distributed electrical source information |
| CN209070345U (en) * | 2019-04-24 | 2019-07-05 | 南京理工大学工程技术研究院有限公司 | A kind of multisensor guidance control system based on Internet of Things |
| CN111130220A (en) * | 2020-01-15 | 2020-05-08 | 青海绿能数据有限公司 | Device of distributing type photovoltaic power plant information acquisition and control |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106532935B (en) | For carrying out the method and its system of secondary system of intelligent substation fault diagnosis | |
| CN103744417A (en) | Multifunctional integrated measurement and control apparatus and system for intelligent transformer station | |
| CN202737576U (en) | Intelligent measure-control apparatus used for low voltage power distribution network | |
| CN106711793A (en) | Novel integrated intelligent distribution box | |
| CN205105000U (en) | Digital relay protection observes and controls and intelligent terminal integrated device | |
| CN101854078A (en) | Monitoring system and method of operation condition of digitalized substation secondary device | |
| Yang et al. | WAMS implementation in China and the challenges for bulk power system protection | |
| CN108289046A (en) | Portable transformer substation telecontrol information debugging system and adjustment method | |
| CN102938539A (en) | Double security arrangement implementation method for GOOSE (Generic Object Oriented Substation Event) virtual loop | |
| CN206225827U (en) | A kind of intelligent low-pressure comprehensive distribution box with plug-in type capacitance compensation | |
| CN204517421U (en) | A kind of electricity generation system fault disconnection device | |
| CN104538933B (en) | A kind of motor differential protective system and method | |
| Arun et al. | Substation automation system | |
| CN114414924A (en) | Distributed T-connection photovoltaic wireless access acquisition system and method | |
| CN205335976U (en) | Scada of transformer substation monitor message and video coordinated control system | |
| CN201637831U (en) | State monitoring and malfunction diagnosing system for large generator | |
| CN103607044B (en) | A kind of relay protection monitoring system and method | |
| CN102508052A (en) | Test method for field band channel operation of automatic bus transfer system of area network | |
| CN111142059A (en) | Intelligent detection device and method for PT unit of outdoor ring main unit | |
| CN210006198U (en) | gauge data transmission system with high safety | |
| CN105182228B (en) | Breaker on-line operation ability brief appraisal method | |
| CN202978427U (en) | Microcomputer monitoring and protecting device of mine-used feeder switch | |
| CN208722016U (en) | Mobile microcomputer protecting device based on GPRS technology | |
| CN112821216A (en) | Management equipment control system for electric power construction and method thereof | |
| CN208459514U (en) | A kind of relay protection operational system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |