Relay protection devices provide technical support for improving power stability and security, protecting power equipment and meeting electricity demand. With the development of the power system and the advancement of computer technology and communication technology, relay protection technology is moving towards intelligent, computerized relay protection devices provide technical support for power stability and safety, protecting power equipment and meeting electricity demand. . With the development of power systems and advances in computer technology and communication technology, relay protection technology is moving towards intelligent, computerized, automated and networking.
Today, the cable flaw detector engineers will analyze the development direction of future relay protection technology. 1. Intelligent uses a wide range of computer technology in the field of power system relay protection, many new computer control methods continue to be applied to relay protection. For example, expert system, artificial neural network, genetic algorithm, wavelet theory, fuzzy logic and other artificial intelligence technologies, thereby developing the research of relay protection to intelligent direction.
If the type of fault is realized by using artificial neural networks; or the transition resistance is shorted to nonlinear problems. The continuous development of artificial intelligence technology has promoted the intelligent development of relay protection technology. Combining different intelligent technology, analyzing uncertainties on the system's impact, to improve system reliability, is the main direction of intelligent protection.
2. The operation accuracy of the microcomputer relay protection device in the computerization system is significantly higher than that in other protection devices. The computerization of the relay protection device is an absolute development advantage. The microcomputer relay protection device uses the central processor as the core, according to the real-time status data of the system to which the data acquisition system is used, the system is detected whether the system has failed and the range, nature, etc. of the fault, and the decision of whether or not to cut off or the alarm. .
The microcomputer relay is implemented by a computer program, where the CPU is a non-controlled marriage center automatically controlled, and the computer program is running on the CPU. Therefore, the performance of the CPU has largely determined the performance of computer system performance. 3. Networked network-type relay is a new type of relay protection technology that is the trend of microcomputer protection technology.
It is based on network technology, computer technology, communication technology, using computer networks to implement various protection functions, including line protection, bus protection, transformer protection, etc. The advantages of network-type relay protection are shared data that can be implemented by fiber protection and high frequency protection can be implemented. In addition, the current amount of all circuit breakers is acquired by the sub-protection system, the amount of bus bar voltage.
So it is easy to achieve bus protection, and other bus bar protection devices are not required. The topology of the network protection system uses a simple annular structure, star structure, bus structure. Because of the importance of relay protection, it is necessary to take a reliable network security control policy to ensure the security of the network protection system.
4, automated cable flaw detector engineers pointed out that modern network technology, computer technology provides system integration and optimization combination of system integration and optimization combination for changing power system monitoring, protection. The high-voltage substation has undergone technological innovation, that is, the combination of automation and relay protection. It is reflected in remote control and information sharing, integration and resource sharing.
With the distant terminal unit, the microcomputer protection device is the core, the control, measurement of the substation is integrated into the computer system, and the system reliability is improved. The integrated automation system breaks the principle of division of traditional secondary system equipment, overcoming the deficiencies that the conventional protective device cannot communicate with the control center, and give the new meaning and content of the substantial automation. I believe that after reading the above analysis of the engineer of the cable, it should be known that the development direction of future relay protection technology is.
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