Model essay on graduation thesis of electrical automation major

The application of electrical automation has gradually penetrated into people's daily work and life, which has greatly changed people's lifestyle. Electrical automation is an electrical information and automation project, and common household appliances are closely related to electrical automation. The following is a model essay for graduation thesis of electrical automation major compiled by me for your reference.

Model essay on graduation thesis of electrical automation major "Application of electrical automation technology in electrical engineering"

The application technology of internal automation in electrical engineering is to accurately debug and supervise the remote power system through different types of automatic detection channels and exclusive control devices, further ensure the power supply quality to enterprises and residents in different surrounding areas, and handle various internal economic and security affairs at the same time. Especially in the recent stage, both China's economy and high-tech R&D strength have undergone essential changes, which put forward stricter normative requirements for the professional skills and quality of front-line technicians in the later period. The author's core task is to compile all new application schemes in the later period according to the requirements and development trend of the design specification of electrical automation control system in China today, hoping to provide some guiding suggestions for the staff in related fields.

Electrical engineering; Automation; System function; Application measures

There is no doubt that electrical engineering has a supporting position in today's high-tech field. It advocates that computer network should be the leading medium at all times to correct the life and work mode of grassroots personnel through the essential level. Electrical automation involves many industries, such as electrical switch design, aerospace science and technology research and so on. After all, electricity is the material basis for comprehensively improving people's quality of life. It is absolutely necessary to fully demonstrate and analyze the application details of automation technology in electrical engineering in order to adapt to the pace of development of the times.

1 At present, the design of electrical automation technology for electrical engineering in China

Discussion on the core principles of planning (1) advocates the use of limited land resources to meet the requirements of electrical automation transformation of different product preparation processes. (2) The application scheme of electrical automation should not be too complicated, aiming at clearly dividing the relevant characteristics of disposal machinery and electricity. Up to now, most civil or high-tech products advocate the transformation with the help of electrical automation technology, which inevitably involves the innovation of process form, the reduction of manufacturing cost, convenient maintenance and control. In the final analysis, technicians need to accurately control different types of electrical components during the layout and application of electrical automation schemes to ensure the safety and reliability of on-site construction and the simplicity and humanization of artificial intelligence operation and maintenance.

2 Flexible expansion of electrical automation technology in electrical engineering

This paper analyzes the measures used to improve and popularize the application technology of automation in the field of electrical engineering, and its advantages include: ① greatly improving the safety and stability level of the overall operation of electrical equipment. (2) Comprehensively and deeply suppress many drawbacks left by the previous regular fault maintenance mode, improve the daily performance of the power system at the same time, gain wide recognition from more enterprises, and vigorously promote the results. Especially from the perspective of technology application, electrical engineering in the new era is more inclined to apply asset management system affairs to electrical engineering for internal condition maintenance technology, and give full play to its functions in engineering condition monitoring and fault diagnosis. , and provide the status data information needed in the maintenance process as appropriate at that time; At the same time, combined with the corresponding data, the actual operation state, existing safety faults and fault factors of various electrical equipment in electrical engineering are accurately predicted. Details of many application controls are as follows:

2. 1 power grid dispatching level

In response to the automation transformation of power grid dispatching in power engineering, it is necessary to quickly assemble monitors, printing equipment, computer networks, service terminals, etc. At the dispatch center. Its core motivation is to dispatch the power grid operation quality economically, so that the details of power grid operation can be carefully monitored, verified and analyzed, and it is convenient to quickly collect the data in the power production process in any time range, thus realizing the automatic handover of power generation control, scientific evaluation of power system state, rational dispatch, power load forecasting and other processes. In case of any accident, the electrical automation system will quickly trace the source, assist technicians to formulate and implement current reasonable countermeasures, try to prevent the accident from spreading and save reasonable expenses.

2.2 Application level of decentralized measurement and control system in power plant

This kind of system mainly includes hierarchical distributed structural units such as Ethernet and engineer workstation, which can directly receive signals such as thermal resistance, electrical quantity, switching quantity and pulse quantity. After self-processing, the running parameters of existing equipment can be displayed in real time, the internal signal output efficiency can be stabilized, and the final results can be printed, so as to properly handle the relationship between equipment and equipment and between lines. In the long run, it is of great significance for the real-time monitoring and protection of various details in electrical production.

2.3 Substation and Distribution Engineering Grade

That is to say, in the substation, different types of automation equipment and computer systems are used to replace the complicated manual work in the past to improve the overall operation efficiency of the substation. Through such observation and verification, the internal automation technology of substation is mainly used for multi-level and all-round monitoring of the safe operation of related equipment. Technicians need to use microcomputer equipment to replace electromagnetic devices in the whole process, conveniently connect automatic measurement, remote monitoring, automatic accident information recording and other equipment, complete the operation monitoring image and intelligent transformation index, and make the final substation smoothly transition and turn to integrated automation.

3 Conclusion

According to the above discussion, the application of electrical automation in electrical engineering is a symbolic product of a country's comprehensive economic and scientific research strength. Especially after globalization and the development of modern science and technology, the internal automation application function of electrical engineering in China has been fully reborn and began to spread freely among different disciplines. In the future, the relevant staff should take the initiative to combine different actual situations to innovate their thinking, and create due support and auxiliary contributions for the comprehensive transformation and application of electrical automation technology in China.

Author: Zhang Shilin Zhao Xinya Unit: School of Electrical Engineering, Shenyang Vocational and Technical College.

refer to

[1] Wang Wei. On the application of electrical automation technology in electrical engineering [J]. Heilongjiang Science and Technology Information, 2013,38 (36):123 ~130.

[2] Mou Jiayuan. Application of automation technology in electrical engineering [J]. Scientific and technological innovation and application, 20 13,14 (01): 88 ~ 91.

[3] Joe glory. Research on the application of electrical automation technology in electrical engineering [J]. Heilongjiang Science and Technology Information, 20 14,19 (17):123 ~138.

Fan Wen-2, graduation thesis of electrical automation major, "Application of electrical automation technology in power supply system"

Application design principle of electrical automation technology in 1 power supply system

The application design of electrical automation technology plays an important role in China's power supply system, which greatly improves the modernization level of China's power supply system technology and enhances its stability and reliability. Therefore, the following principles should be strictly followed in the application design of electrical automation technology in power supply system to improve the effect of application design of electrical automation technology in power supply system.

1. 1 Apply the selection principle

Choosing appropriate automation equipment is an important material premise to ensure the effective application of electrical automation technology in power supply system. Therefore, in the application design process of electrical automation technology in power supply system, we should first follow the corresponding selection principle, that is, we should mainly select the functions of automation equipment from the perspective of remote mobilization and automation system monitoring, and also pay attention to the simplicity of selection and wiring of automation equipment, the stability of performance and the rationality of price, so as to facilitate the maintenance in daily operation.

1.2 application design principles

In the process of applying automation technology to power supply system, the following application design principles should be followed: first, the switch design principle, that is, in power supply system, for the switch of computer monitoring system that needs remote control, intelligent switch with remote opening and closing function must be selected to facilitate the smooth realization of remote operation function of computer monitoring system; The second is the principle of relay protection, that is, in the planning and design of power supply system, the application of transformer protection and integrated electrical automation technology in electromechanical protection devices should be considered comprehensively to maximize the effectiveness of relay protection devices.

2 the importance of electrical automation technology application design in power supply system

The importance of application design of electrical automation technology in power supply system is mainly reflected in the following aspects.

2. 1 is conducive to the realization of the power management goal of the power supply system.

Applying electrical automation technology to the power supply system can not only effectively improve the information level of the power supply system, but also realize the continuity, automation and intelligent monitoring of the power supply system, so that relevant staff can know the running state of the power supply system at any time, and make the whole power system form a complete organic whole, so as to better implement the management and control of the power supply system and realize the power consumption management goal of the power supply system.

2.2 is conducive to the realization of high efficiency and low cost of equipment operation in the power supply system.

The application of electrical automation technology in the planning and design of power supply system can not only organically combine reactive power compensation technology, energy-saving terminal and other related technologies with electrical automation technology, but also realize the low loss of power supply system operation by selecting energy-saving mechanical equipment, effectively adjust the overload operation in power supply system, and realize the high efficiency and low cost of equipment operation in power supply system.

3 design direction of electrical automation technology in power supply system

3. 1 integrated automation technology of power supply system and design direction of intelligent protection application

With the continuous development of China's electrical automation technology and power supply system automation protection theory, microcomputer technology, integrated automation control technology and network communication technology have been widely used in power supply system electrical automation protection devices, which not only realizes the intelligence of power supply system electrical automation protection device control, but also effectively improves the safety and practicability of power supply system electrical automation protection devices. At the same time, integrated automation protection devices based on integrated automation technology have been widely used in substations with different voltage levels.

3.2 Application design direction of power supply system automation real-time simulation system

The real-time simulation system of power supply system automation is one of the important directions of the application of electrical automation technology in power supply system. It is developed on the basis of real-time simulation modeling and load dynamic characteristic monitoring. With the gradual maturity of electrical automation technology in power supply system, real-time digital simulation system is introduced, which creates a good experimental environment for transient test and steady test of power supply system, provides experimental data closer to the real running state of power supply system through experiments, and provides safe, stable and reliable experiments for experimental test of new equipment.

3.3 Design direction of artificial intelligence application in power supply system

Expert system and fuzzy logic are the application design direction of artificial intelligence in power supply system. With the gradual development and perfection of electrical automation technology, they are widely used in power supply system and its related components, mainly including power supply system operation analysis and component fault diagnosis. At the same time, with the maturity and perfection of relevant intelligent control theory in power supply system, artificial intelligence is gradually combined with mechanical intelligence, which not only effectively improves the intelligence and automation level of power supply system, but also greatly improves the stability of power supply system.

3.4 Application design direction of electrical automation in power supply system distribution network

The application design of electrical automation technology in power supply system distribution network is relatively mature, and up to now, it has reached international standards and norms. Electrical automation technology is the key technology to realize electrical automation of power supply system and distribution network. The biggest innovation of this technology in the application of distribution network electrical automation lies in its organic integration of advanced modern software, distribution network information integration technology and digital technology, which overcomes the shortcomings of traditional distribution network technology such as routing and carrier consumption, and effectively improves the accuracy of carrier reception in power supply system.

The main application design of electrical automation technology in power supply system

At present, the application design of electrical automation technology in China's power supply system is mainly reflected in the following aspects.

4. 1 application design of centralized monitoring of electrical automation in power supply system

The biggest advantage of the application of electrical automation technology in power supply system lies in its sensitive operation and convenient long-distance cross-border operation, while the design of centralized monitoring system for electrical automation of power supply system based on electrical automation technology is relatively simple. However, it is worth noting that the centralized monitoring system of electrical automation is a unified processor to collect and sort out relevant data, which leads to heavy functional processing tasks and slow speed of the processor; At the same time, due to the comprehensive monitoring of the operation state of electrical equipment during the operation of power supply system, it will not only lead to the reduction of host redundancy, but also lead to the increase of cable number and investment cost; In addition, long-distance cables will also affect the effect of centralized monitoring of electrical automation. Therefore, in the process of designing the centralized monitoring system of electric automation in power supply system, the influence of related factors on the system function should be considered to ensure the stability, reliability and safety of the centralized monitoring system of electric automation. Based on this, the centralized monitoring system of electrical automation is often used in small electrical automation monitoring, but it has not been widely used in the whole power supply system.

4.2 Design of External Cables and Selection of Power Monitor

Based on the gradual maturity of the application of electrical automation technology in power supply system, the design of external cables of substation is becoming simpler and simpler, which not only meets the functional requirements of substation, but also reduces the design cost. As far as the design of external cables for distribution stations in China is concerned, there are generally only two parts: one is the AC power line with rated power supply of 220V; The second type is communication cable, which mainly uses two types, shielded cable and double-core shielded twisted pair. It is worth noting that in the selection process, generally, two pairs of each type of communication cable need to be selected, one pair of which is used normally and the other pair is used as a backup in case of emergency. In the process of selecting power supply monitor, two factors should be considered emphatically: one is the anti-interference of power supply monitor; Second, the stability and reliability of the power monitor; In addition, in the process of selecting the power monitor of power supply system, it should be selected according to the power type of power supply system, which is embodied in the following aspects: First, when the power supply system is 220V DC power supply, DC screen is generally selected as the power monitor, which is convenient for centralized power supply of power supply system; Second, when the power supply system is below 10kV, both the concentration of power supply and the monitoring function of equipment should be considered during the selection of power supply monitor.

4.3 Selection of Integrated Electrical Automation System in Substation

As far as the current production situation in the power market is concerned, there are many manufacturers of substation integrated electrical automation system equipment, and the standards and parameters of the electrical automation system equipment designed and produced by each manufacturer are different, such as Siemens, a better foreign company. However, it is worth noting that in the process of equipment selection of electrical automation system, we must consider the specific situation of China's power supply system and its functional requirements and related parameter requirements, so that the selected equipment can be normally applied in China's power supply system, meet the functional requirements of network interconnection and database construction, and provide corresponding reference and support for the further application of electrical automation technology in power supply system.

5 development prospect of application design of electrical automation technology in power supply system

With the gradual maturity and continuous expansion of the application design of electrical automation technology in China's power supply system, it has broad development prospects, reflecting the following development trends: first, the international standardization of the application design of electrical automation technology in China's power supply system, such as the compatibility and information sharing of IEDs in China's power supply system, has reached national standards; Second, the application of Ethernet technology, which has the characteristics of fast data transmission and large data load, has great advantages in meeting the real-time communication of power supply system and has broad application prospects in power supply system; Thirdly, the electrical automation technology is organically combined with digitalization, informatization and other related technologies, and on the basis of a large amount of information, it is combined into an electrical automation digital earth composed of multidimensional spatial information, dynamic change information and high score information, which innovates the application of electrical automation technology in power supply system.

6 conclusion

To sum up, electrical automation technology plays an important role in power supply system, which greatly improves the intelligence and automation of power supply system operation and promotes the integration of China's power supply system technology with international standards. Therefore, in the process of power supply system planning and design, we should plant the application of electrical automation technology, and apply artificial intelligence, simulation design, real-time monitoring and other electrical automation technologies to power supply system distribution network, substation and so on. Under the premise of following relevant application principles, the stability, reliability and safety of power supply system are improved.

The third part of the graduation thesis of electrical automation major is "the application of electrical automation control in building engineering"

1 application characteristics of electrical technology in modern buildings

1. 1 background of electrical automation applied to modern architecture

Since the reform and opening up, with the development of national economy and the continuous improvement of people's living standards, the quality of life has made a great leap. Comfortable living environment, simple information exchange and perfect service equipment have attracted people's attention and favor. This has brought great challenges to the soundness of building facilities and the function of electrical equipment. In addition, with the continuous increase of building height, the management and operation of lighting control system, power supply and distribution system and fire protection system have been severely tested. In this case, intelligent building design supported by electrical automation technology is the only way for the development of China construction industry.

1.2 characteristics and technical advantages of electrical automation control

Electrical automation control system is a comprehensive system composed of electric power, air conditioning, disaster prevention, anti-theft and transportation equipment. Intelligent building automation is a technology that automation technology is applied to modern buildings, and its subsystems complement each other and are indispensable. Through the interaction between subsystems, the whole building can be controlled by building temperature, humidity, elevator, lighting and electricity. With the development of global intelligence, it can be predicted that the automation degree of building construction will be higher and higher. Electrical automation technology mainly includes high and new technologies such as power electronics technology and microcomputer control technology, which are widely used in power supply and distribution, installation and debugging of various electrical equipment, electrical control and automation system, scheme design, equipment maintenance, technical improvement, product development and management. The main advantages are as follows: First, the linkage is high. The electrical automation control technology adopts electronic sensing technology, computer and modern communication technology, and implements fully automatic comprehensive management for systems including heating, ventilation, elevator, air conditioning monitoring, water supply and drainage monitoring, power distribution and self-contained power supply monitoring, automatic fire alarm and fire fighting linkage, security and so on, and all subsystems communicate and interact through information. Secondly, it has strong security. Because the electrical system itself is dangerous, equipment failure, nonstandard operation and sudden change of environment may all be the reasons that lead to serious security risks in the system. Through automatic control, the system can quickly find and solve the danger. In addition, through remote control, direct damage to maintenance personnel can be avoided to some extent. Finally, it has sound data and accurate calculation. The automation system can establish a perfect database and accurate calculation according to its own operation flow, fault handling and other data, which provides conditions for the later information optimization decision.

2 the composition of automation system in modern intelligent building and the realization of its functions

The working principle of automation system in modern intelligent building is: real-time data acquisition; Real-time control decision; Real-time control output. Its system includes automatic water supply and drainage system, lighting control system, power supply and distribution system and fire safety system. Among them, the water supply and drainage system includes domestic water supply system, domestic drainage system, municipal water supply and drainage pipe network system, municipal water treatment (including water supply and wastewater treatment) building water supply and drainage, rainwater system, fire hydrant system, automatic sprinkler system and so on. The lighting control system can meet and realize different lighting effects, improve the working environment, improve work efficiency, save energy, prolong the life of lamps and reduce the maintenance cost of users. First, the power supply and distribution system is sent from the power plant to the line through the step-up transformer. This part of the central substation is the power supply system from the central substation to the user transformer through the line, and this part of the switchgear completes the large power distribution system from the user substation to various factories or power loads, and finally completes all power distribution. Fire fighting system means that after receiving a fire alarm, it sends out a signal and the relevant equipment automatically turns into a fire fighting state. For example, after receiving the fire alarm signal, the elevator automatically closes and goes down to the first floor, and the operation is controlled by the firemen who enter the car. In addition to the control system mentioned above, in order to meet the needs of different people for different functions, some specific subsystems can be set up according to the building environment, such as parking lot management system, smart home service system, property management application system and so on. And realize personalized automatic management. In real life, in order to realize the rich functions of electrical automation system in modern intelligent buildings, it is necessary to establish a perfect digital control system, which is the basic condition to realize the application of control technology. At the same time, a remote control management center is established, so that the faults of the local console can be handled in time, thus improving the safety and reliability of the numerical control system.

3 the application of electrical automation control in intelligent building

With the rapid development of China's comprehensive national strength and economic strength, building intelligence has been fully promoted in China, which has brought great convenience to people's life and work and accelerated the rapid development of intelligent buildings. Intelligent building mainly includes security system, computer network, communication system and building automation system. , to a great extent, meet people's needs. Electrical automation control is the technical guarantee of intelligent building function and plays an irreplaceable role in intelligent building.

3. 1 Make scientific planning before installing the automation system of building electrical equipment.

The quality of building electrical equipment automation system not only directly affects the normal operation of building functions, but also affects the environmental and economic benefits of buildings. Therefore, before the construction, the relevant staff should not blindly follow the drawings, fully understand the design scheme, and put forward improvement suggestions for the deficiencies in the design drawings in time to avoid rework. In addition, according to the needs and interests of the owners, a scientific and reasonable installation scheme should be formulated, and the construction should be carried out in strict accordance with the operating procedures to meet the relevant needs of the building itself and the owners.

3.2 Installation of electrical equipment

The normal operation of electrical equipment is the premise to ensure the full function of building electrical equipment automation system. The installation and debugging of electrical equipment is the basic condition to ensure its normal operation, which requires the following steps: first, we must understand the technological process and control process of the whole equipment and master all kinds of instruments used in electrical equipment skillfully. Secondly, carefully study the design scheme and construction drawings. Finally, according to the design drawings, make clear the internal wiring of electrical equipment before the actual wiring of the equipment can be carried out. After all the equipment has been debugged, it will be installed. When installing equipment, it must be installed in strict accordance with the installation requirements and specifications of the equipment. It should be noted here that the wiring must be calibrated before wiring, and the user can start live debugging only when the equipment looks intact, the wiring is correct and the external signal is normal. Before power transmission, all circuit breakers shall be kept in the power-off state.

4 conclusion

As we all know, world economic integration and globalization are the mainstream of world economic development today. To enhance China's comprehensive national strength, we must vigorously develop the construction industry as one of the pillar industries. However, due to the increasing demand for architectural design, traditional buildings in the past can no longer meet people's needs, so intelligent buildings appear in people's field of vision, which brings high-quality life enjoyment and makes people yearn for it. The establishment of intelligent building can not be separated from the support of electrical automation control technology. In other words, the emergence of intelligent buildings has brought a good platform for the development of electrical automation engineering, and has been widely used in many fields and industries. Its technology has the characteristics of fast updating speed and high complexity. Therefore, it is necessary for relevant staff to keep learning and accumulate experience in order to keep pace with the times.

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