Application of RFID Technology in Inspection of Substation Equipment

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RFID is the abbreviation of Radio Frequency Identification, which is radio frequency identification. Commonly known as electronic labels. RFID radio frequency identification is a non-contact automatic identification technology that automatically identifies target objects and acquires relevant data through radio frequency signals. The identification work can work in a variety of harsh environments without manual intervention. RFID technology can recognize high-speed moving objects and recognize multiple labels at the same time, which is quick and easy to operate. Through the RFID automatic inspection system, the safety inspection capability of the power industry has been greatly improved, and this work has reached a new level. The use of RFID technology for the inspection of substation equipment has the following advantages:

First, against external forces, quickly collect data

We know that transmission and distribution lines and equipment are an important part of the power system. They are mostly in long-term operation. They are exposed to nature for a long time. They are not only subjected to normal mechanical loads and electrical loads, but also subjected to pollution and lightning. Strong winds, floods, landslides, subsidence, earthquakes and bird damage. The above factors will cause the components on the line to age, fatigue, oxidize and corrode. If not discovered and eliminated in time, it may develop into various faults, posing a great threat to the safety and stability of the power system. When bar code technology is used for power inspection, the bar code labels that are always in the outside world are often unable to be read due to wear or dirt on the outside of the tag, because the bar code is based on the characteristics of optoelectronic technology and the integrity and cleanliness of the label surface. The requirements are very high. The technical characteristics of RFID itself (anti-pollution, damage, ultraviolet light and other outdoor harsh environment capabilities, long reading distance, repeated information deletion, large storage capacity, anti-collision) have found the best solution to this problem. Radio frequency technology uses the principle of radio technology, and the reading device can quickly perform data acquisition only by radio waves.

Second, control the arrival rate of security personnel, standardization of information input

The inspection work is divided into two parts: substation inspection and line inspection. Among them, the line inspection work needs to be over the mountains, and the control work in place is especially important. In order to control the inspector's arrival rate. I have used the method of "physical retrieval". That is, the device that needs to be inspected is tied to the logo in advance. The markings are retrieved by the inspector at the beginning of the inspection. To verify the inspection arrival rate. When the inspection pass rate is controlled based on the bar code technology, although the inspector uses the bar code handheld inspection device, the bar code pasted on the device can be scanned. The ID number information in the barcode is collected, but the shortcoming of the barcode being easily copied and susceptible to fouling makes the power inspection position of the power inspector cannot be guaranteed. In addition, the patrol inspection work requires the patrol personnel to conduct regular or irregular patrols on the substation equipment, and simply record the operation status and operating parameters of the equipment. The radio frequency reading and writing device system can easily realize the work arrangement and defect data collection of the inspection. In the management, the RF equipment passes the on-site inspection and collection terminal to transmit the information data in real time to the back-end system analysis method, and realizes the inspection of the inspection and the specification of the defect information input.

Third, special environmental inspection to ensure the safe operation of the power supply system

For inspection work in some special environments, such as patrolling those devices in a high-pressure environment or being smashed by equipment with a certain height, it is difficult to complete the inspection work by using the barcode inspection method. The technical characteristic of the radio frequency technology is that the information in the radio frequency tag can be collected in a special environment, and the maximum reading distance can reach about two meters. The radio frequency inspection method can easily make up for the shortage of the bar code inspection mode. The solution applies RFID technology in the process of line inspection, and installs RFID radio frequency tags on the power equipment. The inspection personnel can collect information on the power equipment to be inspected at a long distance, and update the equipment information corresponding to the label. The information data is transmitted in real time to the background information system for data analysis and recording.

Fourth, the high performance and high reliability of the intelligent inspection system

● Advanced PDA application

The system uses the latest mobile operating system PDA terminal based on Micros0fl. Carrying operation is very convenient and stable. Greatly improve the convenience and accuracy of inspections. The PDA has a large storage capacity and enough space to store inspection data. The PDA is equipped with a high-performance CPU that provides more processing power than other handhelds. The PDA also provides Chinese character input function and full-screen handwriting function, which can directly input characters and Chinese characters on the screen.

● Flexible defect description library

The system uses common statement templates for defect entry. The normative description and documentation of defects standardizes defect management.

● Secure data backup

To ensure data security, the system provides automatic data backup and recovery. Data backup: The system automatically backs up data to the PDA extended SD card when the battery power is less than 25% or exits the system. The backup data includes: PDA installation program, user registration information, device accounting information, historical inspection data. And inspection missions. Data recovery: When the PDA terminal data is lost, the PDA terminal program is directly installed through the SD card backup installation program, and the user registration information, device account information, historical inspection data, and inspection tasks are guided before the program is run.

● Perfect statistical analysis

Detailed analysis and processing of inspection records and defects is an important aspect to improve the application value of equipment operation management software products. The system graphically describes the inspection data and defects in the form of charts and reports, which is convenient for managers to make correct decisions.

● Integration with MIS system

In the power industry, due to historical reasons, there are often many computer application systems. The system specially designs and configures interfaces for the original MIS system to realize data sharing and synchronization. Make full use of the original production MIS. The application of RFID in the inspection of power equipment provides a more reliable guarantee for the safety of power equipment. The application of RFID in the power industry will definitely bring the work of the power system to a new level, create huge economic benefits, and open up a broader market space.

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