Application of Wanquan Intelligent Power Assets RFID Management System in China Southern Power Grid
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1 Project background
A power supply bureau in the South is a super large power supply company affiliated to the Guangdong Power Grid Corporation of China Southern Power Grid. It supplies power to 10 administrative districts and 2 county-level cities in xx City, with a power supply area of 7,434 square kilometers, a power supply population of 9.53 million, and a power supply customer of 4.015 million. At present, there are 154 110 kV substations, 27 220 kV substations, and 3 500 kV substations. It is a safe, reliable, technologically advanced and modern power grid company. The particularity of the China Southern Power Grid makes the xx Power Supply Bureau use pure paper or traditional in asset management, which cannot meet the needs of data visualization. It often consumes a lot of precious time and manpower to check assets or conduct equipment inspections and understand the situation. Material resources.
Shenzhen Wanquan Intelligent Technology Co., Ltd. is an early professional service provider dedicated to providing customers with UHF RFID based products and application solutions in China. VANCH brand products are widely used in urban intelligent transportation, power energy systems, asset logistics management, the world’s top 500 companies, government, and military industries.
2 Project implementation goals
Through the power asset RFID management system implementation plan, RFID tags and reading equipment provided by Wanquan Company, and help Party A complete the asset management system. Refined management of power assets, monitoring and management of entering and exiting warehouses, inventory management, power asset inspection management, etc.; the system can monitor the process of entering and leaving the warehouse in real time, which can effectively prevent errors in entering and leaving the warehouse; it can effectively track construction tools and safety tools To avoid confusion in borrowing; Wanquan provides overall solutions to improve the efficiency and management level of the substation’s assets; the substation’s asset management model and optimization of the management process.
3 Project software part
Software system design architecture
RFID system software will be divided into log/query interface module (Web method), handheld client and card issuing client module (Client client-Server server method), RFID system database, and asset management-RFID system interface layer. The necessary data will be passed through the interface layer to the upper-level asset management system, that is, the read RFID information or barcode information, or the inventory RFID information.
The RFID system software includes the following functional modules
1) RF scanning operation
Scan the RFID information (including asset number and location information) through the RF terminal and send the information back to the asset management system, and get the detailed information of the asset through the interface.
2) RF scan verification
After obtaining the detailed information of the asset from the asset management system, it can be compared with that stored in the existing RFID. If there is a difference, the difference can be recorded in the RFID system log.
3) RF real-time inventory operation
First, you can download the inventory plan of the asset management system through the interface or import the inventory plan by importing Excel. The RF device can select the inventory plan and perform the inventory by scanning the RFID. After scanning the inventory, the system can immediately find out the situation of the confirmed missing assets, and can compare the ID, location, product code and other key information during the inventory, and record the difference in the system log.
4) RFID card issuing function
Provide an interface on the PC to allow the user to input/select the asset number or other information and write this information into the RFID tag.
5) User operation/Log query
Combine query user operation record LOG, and trace user operation record.
6) Middle software interface
Sync asset detailed information, inventory and other interface data with the asset management system
7) System authority management
Management, identification and control of users, user groups, roles, and permissions
8) Basic data maintenance
Maintain basic data for system operation, such as sites, addresses, asset types, etc.
9) RFID read/write
The bottom layer interface reads the hardware interface of the active/passive RFID device on the RF and writes the hardware interface of the card.
interface design
Software interface description: In the software part of this project, the RFID reading part is mainly to drive the device to read and write, and record operation logs, error logs and difference reports, involving specific processes and interfaces.
1) Inventory scan RFID interface
Note: When the tag is read, the system will have a sound prompt, and the displayed prompt will display the scanned asset number and list it in the interface list.
2) Log//Query interface
(The following interface is only used as a reference in the plan, the actual interface is based on user needs, subject to survey confirmation)
Real-time asset scanning information query:
3) Card issuing interface
(The following interface is only used as a reference in the plan, the actual interface is based on user needs, subject to survey confirmation)
4 Project hardware and implementation
A) Passive UHF label style
B) RFID UHF passive tag installation (indoor)
1) Switch cabinet, main transformer room, reactor, station transformer, ground transformer
RFID UHF passive tag installation location (installation method: 3M strong glue)
1) Switch cabinet, main transformer room
Schematic diagram of switch cabinet label installation
Schematic diagram of main transformer label installation
3) Reactor, station transformer, grounding transformer
Reactor label installation diagram
Schematic diagram of station variable label installation
Schematic diagram of grounding transformer label installation
C) 915MHZ semi-active RFID tag
Semi-active label style
1) Active RFID tag installation (outdoor)
Schematic diagram of the installation of the grounding switch label on the main transformer side. Schematic diagram of the installation of the main transformer label.
220KV#1 Section A Phase CT Label Installation
220KV switch control cabinet label diagram
D) RFID device description
1) Product features of UHF RFID reader:
1. Adopt Impinj UHF reader chip and TI ARM embedded processing chip to realize high-speed reading and fast data calculation;
2. Fully support electronic tags that comply with EPCglobal UHF Class 1 Gen 2 / ISO 18000-6C standards;
3. Working frequency 860-868MHZ, 902-928MHZ (can be adjusted according to the requirements of different countries or regions);
4. Support multiple methods such as RS232, RS485 and TCP/IP network communication;
5. Support 1, 2, 4 external SMA antenna ports;
6. The output power is adjustable up to 32dbm, and it supports multiple working modes such as active mode, command mode, and trigger mode;
7. The reader has the function of judging the strength of the returned signal from the read tag.
7. Read card buzzer and LED status indication; support online firmware upgrade through communication interface;
8. The reader provides multiple sets of I/O input and output interfaces, which is convenient for product application integration;
9. Highly reliable design of industrial structure to meet demanding working environment requirements;
VF-642 Reader
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