Operation, diagnosis and repair of electrical

2020 ◽  
Author(s):  
Vladimir Polischuk
Keyword(s):  
Undergraduate Students ◽  
Transmission Lines ◽  
Electrical Engineering ◽  
Electrical Equipment ◽  
Electrical Machines ◽  
Technical Maintenance ◽  
Maintenance Service

In the textbook fundamentals of the theory of diagnostics of electrical equipment, organization of technical maintenance, service and repair. The methods of organization of maintenance of electrical machines, transformers, transmission lines and cables. Designed for undergraduate students enrolled in the specialty "power and electrical engineering".

Electrical equipment and electronics of cars. Short explanatory Russian-English terminology Dictionary

2021 ◽  
Author(s):  
Sergey Zuev ◽  
Dmitriy Varlamov ◽  
Aleksey Lavrikov ◽  
Ruslan Maleev ◽  
Yuriy Shmatkov
Keyword(s):  
Electric Power ◽  
Undergraduate Students ◽  
Electrical Engineering ◽  
Electrical Equipment ◽  
Electronic Equipment

Contains information on the theory, design, testing, and diagnostics of vehicle electrical and electronic equipment systems. It is intended for undergraduate students studying in the direction of training 13.03.02 "Electric power and electrical engineering".

Cost assessment of the bus fleet technical maintenance

2019 ◽  
Vol 39 (2) ◽  
pp. 90-95
Author(s):  
V. V. Turgeneva ◽  
V. D. Sekerin
Keyword(s):  
Cost Evaluation ◽  
Cost Assessment ◽  
Effective Management ◽  
Structure Investigation ◽  
Service Cost ◽  
Technical Maintenance ◽  
Maintenance Service ◽  
The Cost ◽  
Operating Company ◽  
Bus Transport

To assess the effectiveness of bus fleet technical maintenance, service cost evaluation should be organized. This cost analysis is essential for effective management at automobile operating company. The article describes the bus transport position in Moscow transport economy. The importance of technical maintenance in a bus transport system is defined. Special attention is given to the cost structure investigation.

Relay protection and automation of electric power systems

2021 ◽  
Author(s):  
Sergey Goremykin
Keyword(s):  
Power Systems ◽  
Electric Power ◽  
Transmission Lines ◽  
Power Supply ◽  
Power Transmission ◽  
Relay Protection ◽  
Electrical Equipment ◽  
Electric Power Systems ◽  
Federal State ◽  
Advantages And Disadvantages

The textbook describes the main issues of the theory of relay protection and automation of electric power systems. The structure and functional purpose of protection devices and automation of power transmission lines of various configurations, synchronous generators, power transformers, electric motors and individual electrical installations are considered. For each of the types of protection of the above objects, the structure, the principle of operation, the order of selection of settings are given, the advantages and disadvantages are evaluated, indicating the scope of application. The manual includes material on complete devices based on semiconductor and microprocessor element bases. The progressive use of such devices (protection of the third and fourth generations) is appropriate and effective due to their significant advantages. Meets the requirements of the federal state educational standards of higher education of the latest generation. It is intended for students in the areas of training 13.03.02 "Electric power and electrical engineering" (profile "Power supply", discipline "Relay protection and automation of electric power systems") and 35.03.06 "Agroengineering" (profile "Power supply and electrical equipment of agricultural enterprises", discipline "Relay protection of electrical equipment of agricultural objects"), as well as for graduate students and specialists engaged in the field of electrification and automation of industrial and agrotechnical objects.

scholarly journals Mathematical Models for the Design of Electrical Machines

2020 ◽  
Vol 25 (4) ◽  
pp. 77
Author(s):  
Frédéric Dubas ◽  
Kamel Boughrara
Keyword(s):  
Mathematical Models ◽  
Electrical Engineering ◽  
Electrical Machines ◽  
Engineering Applications

Electrical machines are used in many electrical engineering applications [...]

scholarly journals NanoGrande: Electron Microscopy Education and Outreach Through a Collaboration of Scientists and Artists

2013 ◽  
Vol 21 (2) ◽  
pp. 42-46
Author(s):  
P. Catravas ◽  
K. Bubriski ◽  
M. D. Frey ◽  
M. E. Hagerman ◽  
B. Cohen ◽  
...  
Keyword(s):  
Social Sciences ◽  
Electron Microscopy ◽  
Undergraduate Students ◽  
Visual Arts ◽  
Mechanical Engineering ◽  
Electrical Engineering ◽  
Computer Engineering ◽  
Wide Range ◽  
Education And Outreach ◽  
Microscopy Images

NanoGrande is the culmination of an art-science effort that brought undergraduate students and faculty from science, engineering, and the visual arts together with professional microscopists of the Capital District Microscopy and Microanalysis Society for electron microscopy education and outreach. Students from two independent undergraduate courses, an advanced photography course and a microscopy laboratory course, collaborated on the project. The participants represented a wide range of majors, including chemistry, biology, electrical engineering, computer engineering, mechanical engineering, bioengineering, psychology, neuroscience, sociology/social sciences, history, and the visual arts. Emphasis was placed on both the scientific and the artistic aspects of the imaging process. The creation of electron microscopy images that were at the same time scientifically meaningful and visually compelling depended critically on communication of insights and ideas between paired students. The collaboration generated an art-science exhibition, NanoGrande, that has been presented to over four-thousand K through 12 students.

Trends in Electrical Engineering Education — A 25-Year Retrospective

1988 ◽  
Vol 25 (3) ◽  
pp. 209-217 ◽  
Keyword(s):  
Engineering Education ◽  
Computer Architecture ◽  
Computer Aided Design ◽  
Electrical Engineering ◽  
Electrical Machines ◽  
Project Work ◽  
Digital Electronics ◽  
Electrical Engineering Education ◽  
Aided Design

The paper considers the changes which have occurred in Electrical Engineering Education over the last twenty-five years, with reference to specific articles published during the lifetime of IJEEE. 25 years ago courses in electrical engineering included substantial coverage of mechanical engineering topics and detailed treatment of electrical machines. Today the emphasis has shifted very considerably towards digital electronics, computer architecture, programming and computer aided design (CAD). Greater attention is paid to project work and the role of the engineer in society.

Effect of Magnetic Field From Mobile Phone on Brain

2015 ◽  
Vol 10 (3) ◽  
pp. 2784-2794
Author(s):  
Dr. Esmail Ali
Keyword(s):  
Magnetic Field ◽  
Power Control ◽  
Mobile Phone ◽  
Transmission Lines ◽  
Electrical Equipment ◽  
Mobile Telephony ◽  
Average Output ◽  
Field Exposure ◽  
The Third ◽  
Gsm Phones

Human exposure to electromagnetic field (EMF) comes from many different sources and occurs in various situations in everyday life. Man-made static fields are mainly found in occupational settings, such as close to magnetic resonance imaging (MRI) scanners, although DC high-voltage overhead transmission lines are being constructed, which are expected to expose larger parts of the population to static electric and magnetic fields.Today, for power regulation most modern electrical equipment uses electronics instead of transformers. Examples include the switched power supplies to laptops, drilling tools, chargers of mobile phones and similar devices. As a consequence, the frequency content of the daily magnetic field exposure has changed mainly by adding odd harmonics (150 Hz, 250 Hz, 750 Hz, etc.). In particular, the third harmonic (150 Hz) has become another dominating frequency in our environment.In particular for brain tissues, the mobile phone used at the ear remains the main source of exposure. However, since the first generation of mobile telephony, the technology aimed at reducing the emitted power of mobile handsets. In particular, for Global System for Mobile communication (GSM) already the introduction of dynamic power control reduced the average output power to about 50% of its rated value during calls, whereas the use of discontinuous transmission during voice calls gave a further 30% reduction in average emitted power. Adaptive power control became faster and more effective in the third-generation (3G) of mobile telephony systems leading to a further reduction (by about two orders of magnitude) in the specific absorption Specific energy Absorption Rate (SAR) compared to GSM phones. In addition, hands-free kits reduce the energy absorbed by the head drastically. Digital Enhanced Cordless Telecommunications (DECT) phones are another source of everyday exposure.

scholarly journals Transient Overvoltage Simulation in 500 kV Transmission Line Plan of Sarawak, Malaysia using PSCAD

2020 ◽  
Vol 9 (4) ◽  
pp. 2481-2490
Keyword(s):  
Transmission Line ◽  
Transmission Lines ◽  
Rapid Development ◽  
Electrical Power ◽  
Research Work ◽  
Electrical Equipment ◽  
Transmission System ◽  
Time Duration ◽  
Three Phase

Transmission system is a crucial system in electrical power since the system transmit the electricity from power generation to consumer load. According to World Bank, the power losses from transmission lines are rapidly increasing from year to year at the rate of 3.85% in the year of 2013 to 5.792% in 2014. Losses in transmission system are most likely from power quality problems such as transients. Transients are the outcome of high unexpected increment in voltage or current surge magnitudes. The peak values of both voltages and current are usually more than twice of that normal voltage and current amplitudes. The surges due to transients can vitally cause power system failure and breakdown of electrical equipment especially at the substations. There were few known transient overcurrent and overvoltage problems, which are due to faults, lightning and line energizing, respectively. This research work mainly focuses on simulating transients for 500 kV transmission system which employ Sarawak as the case study location. Sarawak currently has main 275 kV transmission line covering the whole Sarawak from Miri to Kuching known as Sarawak backbone, but due to lots of industries and rapid development and urbanization boom in Sarawak, there is a planned of 500 kV transmission line as a backup if the 275 kV transmission line proves inadequate. In Sarawak, the 500 kV is planned to be energized at 275 kV. But, in fact this work is for that transmission line to be operated at 500 kV, hence, monitoring the highest transient may occur. The results revealed that lightning and three-phase faults of 1.0 s fault time duration cause the highest change in amplitude of current on the line up to 9.06 pu and 9.27 pu, respectively. The highest lightning amplitude is observed when lightning was simulated at the receiving end of the line which is near to the Tada substation.

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