Search

Premium Membership

Learn about power engineering and HV/MV/LV substations. Study specialized technical articles, papers, and electrical engineering video courses.

Monthly Archive for: «July, 2014»

An Example of Choosing 138 kV Line Circuit Breaker

To better understand a process of high voltage equipment selection, let’s discuss an example of choosing 138 kV Line #3 Circuit Breaker, shown in Figure 1, assuming that the following information about the system is… Read more

Jul 23, 2014 | Edvard

An Example of Choosing 138 kV Line Circuit Breaker

Cable spacing as a means of noise mitigation

In situations where there are a large number of cables varying in voltage and current levels, the IEEE 518-1982 standard has developed a useful set of tables indicating separation distances for the various classes of… Read more

Jul 11, 2014 | Edvard

Cable spacing as a means of noise mitigation

Microprocessor and conventional secondary systems compared

Secondary systems are all those facilities needed to ensure reliable operation of the primary system, e.g. a high voltage substation. They cover the functions of controlling, interlocking, signalling and monitoring, measuring, counting, recording and protecting…. Read more

Jul 09, 2014 | Edvard

Microprocessor and conventional secondary systems compared

Harmonic distortion and high frequency applications

The presence of harmonic frequencies in addition to the fundamental 50Hz, bring about distortion of the fundamental sine wave. Considerable problems may arise dependant upon the level of this distortion. Sources of harmonic distortion can… Read more

Jul 07, 2014 | Edvard

Harmonic distortion and high frequency applications

How the Weather Affects Conductors

Notice how a conductor is strung between poles. It is not pulled tight; it sags. In hot weather it sags even more than in cold weather. Consider the analogy of the clothesline. A tightly strung… Read more

Jul 04, 2014 | Edvard



EEP Academy Video Courses

The learning platform for LV/MV/HV electrical engineers. Learn from experienced engineers and sharpen up your knowledge.