Graduation thesis of electric power automation research

At present, with the rapid development of economy, electric power automation is more and more widely used in China's electric power industry. The following is my graduation thesis on electric power automation research for your reference.

Abstract: The ringing remote control technology of telephone ringing consists of modules such as extracting caller ID number, number filtering and ringing voltage. Set a fixed telephone or a mobile telephone with corresponding authority in the remote telephone control module to ensure that the telephone numbers are corresponding. Id card? .

Keywords: electric power automation; communication technology

Advantages of 1 application in electric power automation

① Applying modern power communication technology to power automation system can monitor the running state of power automation system and electrical equipment in real time. When faults are detected, timely and accurate measures can be taken to quickly eliminate faults and ensure the accuracy, stability and safety of power automation systems and electrical equipment. In particular, modern telephone communication technology has remote control, maintenance and diagnosis means, which can effectively promote the process of power automation. (2) Compared with the conventional remote control mode, there is no need to set up special transmission channels and lines, and the convenience of user telephone exchange network, wireless mobile telephone network and wired fixed telephone network, as well as the condition that telephone communication network is not limited by remote control distance, can be used for all-weather, inter-provincial and even transnational transmission and control. ③ Using mobile phones, office phones and residential phones, remote diagnosis can be carried out for power automation systems and electrical equipment, which plays a very important role in realizing simple use, safety and reliability, low cost and reducing maintenance costs.

Application analysis of 2 in electric power automation

2. 1 Application Analysis of SMS Communication Technology

With the rapid development of modern communication technology and the combination of aerospace technology and telephone communication technology, mobile phone communication technology has been rapidly developed and widely used. Mobile phone short message remote control circuit technology is a typical application of mobile phone communication technology in power automation. In the past, mobile phones were used to control satellites in space and read the data transmitted on the satellites through short messages. Equipped with Bluetooth system, they can send and receive signals wirelessly, and can effectively control the power automation of satellite monitoring. The principle is that the mobile phone short message remote control circuit technology integrates filtering, short message content extraction, incoming call display and other modules. Enter the mobile phone number with corresponding authority in the mobile phone control module, and after writing the short message content of the remote control command, only the qualified mobile phone number and the correct short message content can receive the short message, thus realizing the remote control of electric power automation. Otherwise, the remote control object cannot be driven, and the execution of the short message remote control command will be refused.

2.2DTMF dial-up remote control technology application analysis

DTMF signal is a practical communication technology with high stability and reliability, which was first used in program-controlled telephone exchange system. DTMF signals include the following two types: ① treble group. Include 1633Hz, 1477Hz, 1336Hz and 1209Hz. ② Bass group. Include 94 1Hz, 852Hz, 770Hz and 697Hz. ***8 kinds of frequency signals, DTMF dial-up remote control technology selects 2 out of 8, and selects 1 signals of treble group and bass group respectively to form composite signals, thus forming a remote control signal system with 16 groups of specific codes. The application principle of DTMF dial-up remote control technology in power automation is as follows: a telephone with remote control authority is set in the remote telephone control module, and the telephone number is guaranteed to have the corresponding identity remote control function; When the dialing verification passes, the communication system will give the corresponding prompt and dial the corresponding DTMF code to drive the corresponding remote control object to act; Calls without corresponding permissions will not be answered and dialed. DTMF dial-up remote control instruction coding scheme mainly includes 9 kinds: ① Switch first. The remote dial-up code is 1*, and the remote dial-down code is 1#. ② The second switch. The remote open dial number is 2*, and the remote close dial number is 2#. ③ The third switch. The dialing code of the remote controller is 3*, and the non-dialing code of the remote controller is 3#. ④ The fourth switch. The dial number of the remote controller is 4*, and the dial number of the remote controller is 4#. ⑤ Fifth switch. The dial number of the remote controller is 5*, and the dial number of the remote controller is 5#. ⑥ Sixth switch. The remote open dial number is 6*, and the remote close dial number is 6#. ⑦ The seventh switch. The dialing code of the remote controller is 7*, and the non-dialing code of the remote controller is 7#. 8 The eighth switch. The remote control dial-up code is 8*, and the remote control dial-down code is 8#. Pet-name ruby No.65438 +0 ~ 8 switch. The dial number of the remote controller is 9*, and the dial number of the remote controller is 9#.

2.3 Application Analysis of Telephone Ringing Remote Control Technology

The ringing remote control of telephone ringing remote control technology consists of modules such as extracting caller ID number, number filtering and ringing voltage. Set a fixed telephone or mobile telephone with corresponding authority in the remote telephone control module to ensure that the telephone number has corresponding? Id card? . The remote control module of telephone ringing remote control technology only receives the ringing signal of the telephone with corresponding authority, drives the corresponding remote control circuit, and then returns the ringing remote control signal to the remote telephone according to the corresponding status information. In addition, it is necessary to use different sensor connections, such as single-chip microcomputer circuit. The circuit interface is triggered by the lower edge, and the trigger level is from high to low, from 5V to 0 V. For phones without authority, no ringing signal can be received, so the remote control circuit cannot be driven.

3 Conclusion

In a word, the power automation system must conform to the development trend of communication technology, computer technology and other IT technologies. The application of modern telephone communication technology in electric power automation system can comprehensively monitor the whole electric power automation system, timely and accurately find the faults existing in the electric power automation system, and quickly take targeted measures to solve them, thus reducing the maintenance cost of fault handling of electric power automation system, reducing the labor intensity of maintenance personnel, and achieving greater economic and social benefits.

Fan Wen-er: Application of information technology in electric power automation system Abstract: At present, electric power automation system is one of the fields with the most advanced technologies in the field of electronic technology, and the combination of electronic information technology and computer technology will be quickly applied to electric power system, which means that the development of electronic information technology directly affects the development of electronic system automation.

Keywords: information technology; Electric power automation system

1 the concept of power automation system

Power generation, transmission, transformation, distribution and electricity consumption constitute a complete power system. The primary equipment of power system is usually generators, transformers, transmission lines and switches. In order to make these primary equipments run stably and safely during the working period, and ensure that the power system can ensure certain economic benefits, it is necessary to monitor these primary equipments on line, and protective measures are taken for dispatching control. In power system, protection devices, measurement and control devices, some communication-related equipment, computer systems of power grid control centers at all levels, and computer control systems of substations and power plants are collectively referred to as secondary equipment in power system. These secondary devices basically cover the main contents of the whole power system automation.

2 the application of electronic information technology in electric power automation system

The electronic information technology used in electric power automation system mainly includes three aspects: power grid dispatching automation, substation automation and distribution automation. The most important of these three aspects is the construction of power grid dispatching automation, and computer network control center and server workstation are the central components of power grid dispatching automation.

2. 1 power plant automation

At present, the distributed control system is the most commonly used in the integrated automation system of power plants in China. At the same time, the distributed control system is also a widely used system. The protection and measurement and control devices of the distributed control system can be directly installed in the switch cabinet. These two devices are connected through the field bus, and then connected to the background through the communication manager. The distributed control system must use multiple computers to control these loops in a decentralized way, and connect some parameters of each control station with other control CRT devices through communication. When the power plant adopts the decentralized control system, the power plant develops and changes rapidly, especially in computer hardware, software and communication technology, which are supported by the decentralized control system, so that the independent control functions in the original power plant are decentralized and centralized, and they are all integrated into a mutually managed whole.

2.2 Power grid dispatching automation

The core structure of the whole power system automation is power grid dispatching automation. Power grid dispatching automation Power grid dispatching automation is mainly composed of hosts, network servers, printers, power plants, workstations and substations within the dispatching scope. Power grid dispatching automation system can distribute electric energy well, and it is also an effective guarantee for power grid dispatching safety. Its main function is to collect real-time data in the process of monitoring and power production, analyze the safety data needed for power grid operation, estimate the operating state of power system, control provincial power generation system to meet people's needs and ensure the normal power supply of power grid. In the process of power supply and transmission, we should also ensure the working cost of the power grid, save expenses as much as possible, and postpone the investment cycle when the power grid is in normal operation to ensure the economic benefits of the power grid in the operation process.

2.3 Substation automation

In order to improve the monitoring function of substation, realize the efficient operation of substation, and save the steps of manual monitoring and telephone operation, substation automation appears. The computer technology widely used in substation mainly comes from the original computer intelligent equipment. This intelligent device can not only analyze and measure difficult information, but also digitize it. At the same time, you can also record time data through the storage function between computers. The main function of substation automation is to implement protective measures for relays and reorganize and optimize secondary equipment. Substation automation replaces the secondary equipment of substation in a special sense, which is an indispensable link of power grid dispatching automation and an important link of power production.

3 the development prospect of electronic information technology in electric power automation system

3. 1 Compatibility between electronic information equipment and power automation equipment

At present, the society is concerned about the compatibility between electronic information equipment and electronic automation equipment. In power system, microcomputer products are more and more widely used, and gradually become the mainstream direction of power system automation products. However, because the power system is very complex and the electromagnetic environment is very bad, the microcomputer products used in the power system are easily affected by these factors, resulting in misoperation and refusal to operate. If it is lost or collapsed, it will cause huge economic losses to the power system.

3.2 Application of electronic high-tech in power system automation

Infrared imaging technology, video technology and image information technology have been widely used in power system. At present, the application of image information technology in power system automation is becoming more and more important, and at the same time, the technical ability of analysis and understanding is becoming higher and higher, so electronic vision technology must be borrowed to replace manual calculation for image understanding in some occasions. On the premise of ensuring the safety of electric power automation system, electronic vision technology can be applied to the processing and analysis of image information, and the image information of electric power system can be intelligently processed. In addition, expert system, fuzzy technology and other applications have also been applied in power automation system.

4 conclusion

At present, power automation system is one of the most advanced fields in the field of electronic technology. The combination of electronic information technology and computer technology will soon be applied to power system, which means that the development of electronic information technology directly affects the development of electronic system automation.

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