Abstract: The intelligent electrical control system can realize unmanned control, does not need a control module, and has high consistency when processing different data. This paper analyzes the application of intelligent technology in electrical engineering automation control.
Keywords: intelligent technology; electrical engineering; automation control
With the proposal of "Made in China 2025 Plan", more computer information technology will be integrated into electrical appliances, and the level of intelligence and informatization of electrical products will be rapidly improved. With the development of economy and society, the importance of electrical engineering has become more and more prominent. The automation control technology used in electrical engineering has become the key to electrical engineering, which has changed the disadvantages of low efficiency of traditional automation control, and greatly improved Automated control efficiency.
1 Intelligent technology
Intelligent technology is mainly formed by computers, precision sensing technology, GPS positioning technology, etc. With the increasingly fierce market competition, production equipment using intelligent technology can greatly improve the working environment of workers, reduce labor workload; improve work efficiency; strengthen Equipment safety; reduce equipment operating costs; realize early diagnosis of equipment, etc. There are many applications of intelligent technology in the field of electrical engineering, which greatly improves the performance of electrical products. The development direction of intelligent technology presents the characteristics of high speed, high precision, flexibility, complex process, multi-axis, and real-time intelligence.
1.1 High speed, high precision and high efficiency
By adopting a control system composed of high-speed chips and cooperating with high-resolution detection components, the accuracy and speed of the equipment can be improved. Accuracy and speed are important indicators of electrical equipment, and the improvement of accuracy and speed is the basis for improving equipment performance.
1.2 Flexibility
The flexibility of equipment can reduce equipment failures and meet the needs of different customers, which is very important for the performance of the system. Modern electrical systems involve many equipment objects and require high control, and the flexibility meets the requirements of the minimum performance of the system.
1.3 Real-time intelligence
With the improvement of sensor and system processing capabilities, the system can process a large amount of information instantaneously. With the help of artificial intelligence, human behavior can be simulated and various situations in the system can be analyzed. The development level of artificial intelligence is developing towards practicality, which is getting closer and closer to actual production and life. The integration of real-time systems and artificial intelligence can make the system more intelligent and quickly respond to complex problems. The real-time intelligent system can be applied to various equipment to improve the intelligence level of the equipment.
2 Characteristics of intelligent technology in electrical engineering automation control
The development of electronic information technology has led to the rapid development of electrical automation technology, and my country's electrical automation technology has entered the stage of intelligence. The controller has changed greatly from the traditional controller, and various intelligent technologies of the controller have been greatly improved.
2.1 Intelligent controller can realize unmanned over-control
Intelligent control can greatly reduce manpower in various situations, the action response time is fast, and the system has strong robustness. The use of intelligent technology for the power system can realize the automatic adjustment of the system and reduce the dependence on personnel. And the use of intelligent technology in the electrical system can realize remote control, and control the equipment under unmanned conditions, which is a great advancement in electrical technology. A large number of unmanned factories have emerged in modern times. Intelligent control is carried out through remote control equipment, and monitoring personnel monitor all aspects of production through the screen. These electrical equipment are the key to realizing unmanned control.
2.2 Intelligent controller does not need control model
The intelligent controller has more significant advantages than the traditional controller. The intelligent technology can improve the compact coefficient of the automatic controller. The traditional controller has a strong dependence on the design of the control object model. When complex dynamic equations appear, the controller will The control object cannot be controlled. In intelligent control, the design part of the model of the controlled object can be deleted, which reduces the unpredictability of the model.
2.3 The intelligent controller has high consistency when processing different data
The intelligent controller can process and estimate the data under any input conditions, and the controller can also evaluate some unapplicable data. The object has a strong changeability, and the controller presents different control effects, and various control objects may appear, and intelligent technology cannot fully control it. In the overall control, it is impossible to take no action on any control object, which is a deficiency that intelligent technology should study in the future. In the development of intelligent technology, attention should be paid to the analysis and demonstration of different control objects combined with the actual situation to ensure the control effect of the system.
3 Specific application of intelligent technology in electrical automation control
With the development of artificial intelligence, many achievements of artificial intelligence have been successfully applied to real life, and have been well applied in all walks of life. Artificial intelligence can greatly improve the level of electrical automation control. Fault diagnosis and other aspects play an important role. The application of neural network system and fuzzy logic control makes the performance of automatic control more excellent. As shown in Figure 1, in the water supply system, through artificial intelligence control, when a water pump fails, it can automatically switch to another water pump and realize frequency conversion control.
3.1 Neural network system
Form the identification control of the stator current to conduct electrical dynamic parameter identification and rotor speed identification. The neural network of the two subsystems of electrical dynamic parameters. The neural network has a strong feed-forward property, and uses algorithms such as reverse learning algorithms to monitor the electrical drive system and AC motors. The intelligent network system has better noise resistance, and can perform signal identification and processing without a control model. The neural network improves the reliability of the diagnostic system, and multiple sensors can act simultaneously. When the neural network is mapped, the activation function, hidden layer, and optimal hidden layer exist in the network, and are processed by neural learning reverse error technology.
3.2 Fuzzy logic control
The fuzzy controller is a good substitute for the PID controller, and fuzzy control is often used in digital dynamic systems. M-type controllers can be used in speed control, and both M-type and S-type have rule bases. When fuzzy control occurs, the reasoning machine can reason and make a decision. Database and language control library are important components of knowledge base. Operate after the neural network reasoning machine and fuzzy controller reasoning machine are modeled, and add expert experience and knowledge.
3.3 PLC system
PLC technology is an auxiliary system for power production, which meets the increasingly high requirements for power control and will gradually replace relays. In the centralized control room, both manual control and automatic control can be performed, and the display screen is monitored through field sensors and remote I/O stations, which greatly improves the operating efficiency of the enterprise. The use of PLC technology can not only allow the power supply system to be automatically controlled, but also improve the safety of the power supply system.
3.4 Fault diagnosis and optimization operation
The advancement of information technology has accelerated the development of electrical engineering technology, and the innovation speed of electrical equipment has been accelerating, which has satisfied people's pursuit of production efficiency. Some outdated production technologies and processes have been gradually eliminated, and CAD design has gradually replaced traditional manual design. Carrying out CAD design according to the relevant knowledge rules of electromagnetic, circuit and motor can greatly improve the efficiency of design and develop a large number of products in a short period of time. Many colleges and universities have invested a lot of energy in electrical design, and expert systems will be gradually applied to electrical engineering. Intelligent technology can quickly monitor electrical equipment in case of failure, and diagnose the failure in time according to expert system, neural network and fuzzy technology to further optimize the operation. Intelligent diagnostic technology has important applications in motors, generators, transformers and other equipment, which greatly improves work efficiency. By detecting whether the transformer is leaking oil or not, the gas of the transformer leaking oil can be detected, and the possible faults of the transformer can be well found, so that the inspection range can be narrowed down quickly, and the maintenance is convenient. Intelligent diagnosis technology can not only speed up the diagnosis speed of equipment, but also give early warning of possible equipment failures, reduce the possible losses caused by failures, and improve the economic performance of electrical equipment.
4 Conclusion
The application of intelligent technology is the requirement of the development of modern society. It can greatly improve work efficiency, reduce the operating cost of enterprises, and carry out system control and fault diagnosis through remote control. The cumbersome manual labor will be gradually replaced by advanced intelligent equipment, which plays a very important role in exerting the core competitiveness of the enterprise, improving the operating level of the enterprise, saving expenses, and increasing the efficiency of the enterprise.
