Graduation thesis of electrical engineering automation college 1
Discussion on the development trend of electrical automation in electrical engineering
Abstract: With the progress and development of China's socialist market economy, the development of electrical automation technology is becoming more and more mature, and its application in electrical engineering is becoming more and more extensive. The application of electrical automation technology in electrical engineering plays a very important role in promoting the development of electrical engineering and China's economic construction. This paper discusses the design concept and development trend of electrical automation control system, so as to apply electrical automation to electrical engineering and make corresponding analysis.
[Keywords:] electrical automation; Electrical engineering; Design concept; Development trend; App application
1 concepts of electrical engineering and electrical automation
Electrical engineering is one of the key disciplines in the high-tech field and a hot topic in the field of modern scientific research. The most successful example is that the great progress of electronic communication technology has promoted the vigorous development of the information age with computer network as the core, and fundamentally changed people's work and life patterns. To some extent, the development of electrical engineering can even represent the level of scientific and technological progress of a country.
The full name of electrical automation is generally electrical engineering and automation, and its application covers all walks of life, from the design of electrical switches to the research of aerospace science and technology. The development of electric power is an important material basis for promoting production and improving people's living standards. With the continuous development and deepening of power application, the process of electrical automation in the new period has become an important symbol of the modernization of national economy and people's lives.
2 design concept of electrical automation control system in electrical engineering
2. 1 Application of centralized monitoring design concept in electrical engineering
The centralized monitoring mode is characterized by convenient operation and maintenance in electrical engineering, low requirements for control stations, and easy system design. Moreover, it concentrates all the functions in the system on one processor, and the task of the processor is quite heavy, which seriously affects the processing speed. As we know, when electrical equipment enters the monitoring, a large number of monitoring objects are followed by a downward trend in the redundancy of the host, the number of cables is also increasing, and the investment is also increasing obviously. The introduction of long-distance cables will affect the reliability of the system. At the same time, the operation locking on the disconnector and the interlock on the circuit breaker are hard wired, but the auxiliary contacts on the disconnector often appear the phenomenon that the contacts are not in place, which will cause the equipment in electrical engineering to be inoperable. The secondary wiring of this kind of wiring is quite complicated, which will bring inconvenience to the inspection of wiring and greatly increase the maintenance. In the process of checking wiring or transmission, there is also the possibility of operational errors caused by the complexity of wiring. So centralized monitoring is also widely used in electrical engineering.
2.2 Application of Remote Monitoring Design Concept in Electrical Engineering
The advantage of remote monitoring is that it saves a lot of cables added in electrical engineering; But also can save the installation cost; But also can save a lot of materials; At the same time, it is characterized by flexible configuration and high reliability. However, because the communication speed of various field buses in electrical engineering is not very high, and the communication volume in power plants is very large, the remote monitoring method is suitable for small-scale system monitoring in electrical engineering, and is not suitable for the construction of full-length electrical automation system control.
2.3 Application of Fieldbus Monitoring Design Concept in Electrical Engineering
In today's society, computer network technologies such as field bus and Ethernet have been widely used in electrical engineering automation system, and at the same time, a lot of rich experience has been accumulated, which makes the electrical automation equipment develop rapidly and lays the foundation for the application of electrical automation system in electrical engineering. Fieldbus monitoring can make the system design targeted and adopt different functions for different sections, so that the system can be designed according to the sections. In addition to these advantages, this monitoring method also has the advantages of remote monitoring method, and at the same time, it can reduce isolation equipment, analog quantity, terminal cabinet and so on. Moreover, the electrical intelligent equipment is installed locally and connected with the monitoring system through communication equipment, which can save a lot of cables, too much investment and workload in installation and maintenance, and further reduce the cost. In addition, the functions of each device are relatively independent and connected through the network. The configuration of the network is very flexible, which improves the reliability of the whole network system. The failure of any equipment only affects the corresponding components, so that the system will not be paralyzed. Therefore, the field bus monitoring method is the most and best method in electrical engineering, and it is also the prospect direction of electrical automation development.
Application analysis of electrical automation technology in electrical engineering
3. 1 Electrical Engineering of Power Grid Dispatching Automation
The power grid dispatching automation system consists of a server in the power grid dispatching center, a large screen display, a workstation and a corresponding computer network. The way to realize automation is to effectively connect the power grid dispatching center, power plant, measurement and control equipment and other substation terminals within the summer dispatching range through the special local area network on the power system. It can be seen that the application of electrical automation technology in electrical engineering plays a very important role, mainly through the real-time evaluation of power system operation state and the prediction of power load according to accumulated data, so power generation control and economic dispatch will be automated on this basis, but such requirements are only available in power grids above the provincial level. In the operation process of power system, it is necessary to collect and process data in real time, monitor according to the data, and master the operation state and safety of power grid with the support of data, so as to meet the operation requirements of modern power market well.
3.2 decentralized measurement and control system in power plant electrical engineering
In electrical engineering, the decentralized measurement and control system of power plant generally adopts a hierarchical and distributed structure in practical application, which consists of Ethernet, remote workstation, process control unit and high-speed data communication network. The remote control unit mentioned here is composed of a module that can only do input and output and a main control module that can be configured redundantly. The main control module communicates with the input and output on the bus through the input and output in redundant intelligence. Among them, the process control unit can be directly used in the production and operation process, can directly receive the signals of thermocouple, thermal resistance, switch value and field transmitter, and can also print, display and output the signals on the running state and parameters of the equipment in real time after recalculation, so as to directly drive its actuator, and finally realize the functions of interlock protection, control and detection of electrical automation in the production and operation process of electrical engineering.
3.3 Substation Automation in Electrical Engineering
The substation in electrical engineering adopts automation technology, whose main purpose is to replace manual operation, manual monitoring and telephone communication, and to strengthen the monitoring ability of the substation according to the corresponding situation, and also to improve the operation level and efficiency of the substation. In other words, the application of automation technology in substation is to monitor the running state of various electrical equipment in substation in an all-round and multi-level way and complete effective control. This automation is characterized by replacing the previously used electromagnetic device with fully computerized equipment, realizing the monitoring of computer screen operation, realizing the management and statistical record of automatic operation in the process of data transmission, and replacing the power signal cable with computer cable. That is to say, substation automation in electrical engineering is an unattainable part of modern power production. Because it can well meet various operation tasks of substations, it has become an inseparable and important part of power grid dispatching automation.
4 development trend of electrical automation in electrical engineering
We all know that the development trend of electrical automation should be distributed, informational and open. Distributed structure is a kind of network, which can always ensure that all modules of each function in the computer network can work independently in the future, thus achieving the concept of system risk dispersion. Informatization is a comprehensive information processing ability based on system information and combined with network technology to realize network automation and management integration. Openness is to realize the connection between the system and the external network according to the excuses of the system structure and the outside world. In electrical engineering, we should also combine these three ways to control the electrical automation system to ensure the safe and reliable operation of the electrical engineering production process.
5 conclusion
Through the above analysis, electrical engineering is a facility project with high technical and professional requirements, and the construction and transformation of power grid is developing rapidly, and the requirements for electrical automation system are also high. Therefore, we should greatly improve the level of electrical automation system in these aspects, so that it can play its own advantages in electrical engineering. At the same time, electrical automation system plays a very important role in the economic benefits and safe operation of electrical engineering, so we will realize the modernization of electrical automation in electrical engineering.
Graduation thesis of electrical engineering automation college II
Application of artificial intelligence in electrical engineering automation
order
In recent years, with the rapid development of artificial intelligence technology, automation has been widely used in many fields, especially in electrical engineering automation control, which is simple, accurate and targeted. However, there are still some problems and shortcomings that need to be improved. In the new era of rapid development of science and technology, it is of great significance to strengthen the application of artificial intelligence automation in electrical engineering in China.
1. Overview of artificial intelligence
After the concept of artificial intelligence was first put forward in 1956, it developed rapidly in the research field, and gradually formed a comprehensive science based on computers, including automation, cybernetics, information theory, biology, bionics, psychology, linguistics, mathematical logic, philosophy, medicine and other disciplines. In the field of artificial intelligence, the machine has a system similar to the process of human intelligence, and can do the work that human intelligence can do. The theory of artificial intelligence is a theory to explore and study how to prolong and simulate human intelligence.
As a new branch of computer science, artificial intelligence technology interprets the essence of intelligence, and on this basis, it produces an intelligent machine similar to human intelligence. The research in this field mainly includes: image method, language method, robot, expert system and natural language processing system. Electrical engineering mainly studies automatic control, system operation, information processing, electronic and electrical technology, research and development, information processing and computer and electronic applications related to electrical engineering. With the continuous development of science and technology, computer technology has been applied to all aspects of our lives. The rapid development of computer programming technology has accelerated the development of communication, automated transportation and communication. As the most sophisticated instrument, computer programming can only imitate the human brain to explain, process, exchange, collect and feedback information, so imitating the human brain technology will promote the development of electrical engineering automation. Electrical automation control plays an important role in strengthening exchange, production, distribution and smoothness. Realizing the automation of electrical engineering will reduce the investment of human capital and continuously improve the effectiveness of operation.
2. The current situation of artificial intelligence technology in electrical automation control.
(1) Perfecting the design of electrical equipment is a complicated task, which requires not only knowledge of circuits and electromagnetic fields, but also some experience in design. In the past, product design was carried out by hand with simple methods and experience, and it was not easy to choose the best scheme. However, with the progress of computer technology, the design method of electrical products has also changed, gradually changing from manual design to computer design, greatly shortening the research and development cycle of electrical products. The application of artificial intelligence technology in electrical automation control has greatly developed the previous CAD technology, which not only greatly improved the efficiency of product design, but also improved the quality of products.
(2) Intelligent control function becomes a reality. 1) data acquisition and processing: all switching values and analog values can be acquired in real time, and can also be processed or stored as required. 2) Operation monitoring and event alarm: it can intelligently monitor the analog quantity and switch state of main equipment in real time, and has the functions of alarm of accident exceeding limit and state change event, event sequence record, accident handling prompt and automatic handling, sound and light, voice, telephone and image alarm. 3) Operation control: The control of circuit breakers and electric disconnectors and the adjustment of excitation current can be realized through the keyboard or mouse. Operators can run in parallel with the power grid with load or stop at the same time according to the sequence control program. In addition, the system also limits the operator's operating authority to meet the needs of operation duty management at all levels. 4) Fault record: It mainly includes analog fault record, waveform capture, switch displacement and sequence record.
3. The application of artificial intelligence in electrical engineering automation.
There are a large number of automatic control and manual control devices scattered in the power system, such as relays, circuit breakers and disconnectors. Compared with simple local control, synergistic effect constitutes a huge real-time control of the whole power system. There are two control modes for real-time protection control of power system: separation control and continuous control. Because of its clear logical thinking and quick disposal skills, artificial intelligence technology has become the main content of online state assessment. Excitation control is the main part of controlling the terminal voltage of reactive power generator, and it is a main real-time continuous control system, which plays a major role in maintaining the invariance of power system. Load rejection is another independent control system. When the system capacity changes sharply due to generator failure, the artificial intelligence system can handle the suspended load capacity, which has outstanding adaptability and practicability.
3. 1 Optimal design of electrical products
The optimal design of electrical products is a huge task. In the design process, it is necessary to organically integrate scientific design with experience and common sense to make product design scientific and applicable. In recent years, with the rapid development of computer technology, the design of electrical products adopts artificial intelligence technology, which gradually changes the design process from manual to artificial intelligence-aided design, thus effectively shortening the product design cycle and making the product design more and more excellent, applicable and scientific.
3.2 Fault Diagnosis of Electrical Equipment
When there is a problem with electrical equipment, the symptoms and related practical problems are very complicated, and it is difficult to judge and find it in time, and the manipulation of artificial intelligence technology can just deal with this problem. At the same time, the manipulation of artificial intelligence fault diagnosis technology is also very common in electromechanical and generators. Because of the nonlinearity, uncertainty and complexity of electrical equipment fault, the traditional diagnosis method has low accuracy and no obvious effect, while artificial intelligence can ensure the high accuracy of fault diagnosis by combining expert system with fuzzy theory.
3.3 Intelligent control of operation process
With the increasing demand for automation, artificial intelligence control technology will be a trend in the future, and it has been widely used in electrical engineering automation. The control of electrical equipment is a huge and comprehensive work, which requires high technical content. We should also use all kinds of professional knowledge comprehensively, and then calculate and explain according to a large number of data. Through the application of process artificial intelligence technology, it is connected with expert system control, fuzzy control and neural network control, because the characteristics of artificial intelligence can ensure fast calculation speed and high calculation accuracy, thus saving a lot of manpower and material resources, which can be said to be a liberation of human resources.
At the same time, the electrical industry is closely related to our daily life and further study. Therefore, it is necessary to simplify the complicated operation and improve the operating efficiency of the electrical system. Manipulating the artificial intelligence technology in the process of ordinary electrical system manipulation can simplify the huge manipulation program, and control the computer at home to complete the manipulation, thus realizing remote control. Not only that, we can also simplify the interface, save and dispose some main information in real time, which is convenient for future questioning and manipulation. In addition, manipulating artificial intelligence technology can also actively generate reports, saving a lot of time and improving work efficiency.
4. The development trend and prospect of computer control technology.
Computer control technology is to manipulate computer knowledge to carry out automatic production in related industries. In recent years, with the development of national economy, computer information technology has been applied to all walks of life, and computer technology has also been greatly promoted under the background of the rapid development of scientific and technological information technology. At present, the progress and improvement of computer technology affects the development and progress of automation control technology. With the continuous development and progress of society, the development of computer automation technology tends to be deep and extensive. On the one hand, computer automation technology tends to be intelligent, and computer control technology can imitate some human feelings, such as touch and hearing. And it can also imitate human perceptual skills, that is, infer other characteristics of objects according to a certain detail feature, or perceive objects from groups. On the other hand, computer control technology and automation management technology began to develop in different categories, and gradually applied to illusory system engineering, and developed towards the goal of integrating management and technical work.
5. Conclusion
The application of artificial intelligence in electrical engineering automation is very important. Therefore, in the subsequent development of the electrical field, we should constantly improve the skills of automation, strengthen the application of artificial intelligence automation in electrical engineering, and promote the development of electrical engineering technology. By analyzing the problems of artificial intelligence in electrical system, it is shown that the artificial intelligence controller can adjust its performance according to the actual situation, further clarify its application direction in electrical engineering, and lay a solid foundation for electrical engineering automation. In the 2 1 century, where science and technology dominate, artificial intelligence technology is applied to electrical automation control system to realize intelligent design, improve the efficiency of electrical automation production, and make artificial intelligence better serve human society.
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