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Monthly Archive for: «September, 2015»

FACTS Devices To Enhance Power System Performance

Flexible Alternating Current Transmission System (FACTS) simply refers to a combination of power electronics components with traditional power system components. They are intended to improve our power system reliability, power transfer capability, transient and dynamic… Read more

Sep 28, 2015 | sajna soman

FACTS Devices To Enhance Power System Performance

Analysis of pole-mounted MV/LV transformer grounding

Let’s discuss in some detail the reasons for the grounding philosophy adopted for pole-mounted MV/LV transformer substations illustrated in Figure 0. Contents: LV grounding MV grounding Combined MV/LV grounding Separate MV/LV grounding MV electrode LV… Read more

Sep 23, 2015 | Edvard

Analysis of pole-mounted MV/LV transformer grounding

Voltage Drop Calculations For Engineers – Beginners

Voltage drop calculations using the DC-resistance formula are not always accurate for AC circuits, especially for those with a less-than-unity power factor or for those that use conductors larger than 2 AWG. Table 1 allows engineers to perform… Read more

Sep 19, 2015 | Edvard

Voltage Drop Calculations For Engineers - Beginners

Guidelines To Residential Room Lighting

Architects of development houses usually select the locations for switches, receptacles, and luminaires at a quality and price level determined by the builder. However, purchasers of architect-designed, custom-built homes usually have an opportunity to decide… Read more

Sep 18, 2015 | Edvard

Guidelines To Residential Room Lighting

4 Factors To Consider When Selecting a Sectionalizer

Sectionalizers are (beside overcurrent relays, reclosers and fuses) one of the most used for distribution system protection. A sectionalizer is a device that automatically isolates faulted sections of a distribution circuit once an upstream breaker… Read more

Sep 16, 2015 | Edvard

Sectionalisers as one of the most used for distribution system protection

5 Steps To Safely Shutdown a Large Generator

Normally, units are removed from service through operator initiation of distributed control system (DCS) commands or turbine trip buttons that shutdown the prime mover. Closure of steam or fuel valves will then initiate anti-motoring or… Read more

Sep 11, 2015 | Edvard

5 Steps To Safely Shutdown a Large Generator

The Basics of Electrical Bus Protections

When we examine electrical protection schemes, the best place to start is with electrical bus protections, as they are the easiest to protect. They utilize the fundamental concept of the overcurrent relay (Figure 1). An overcurrent relay is an… Read more

Sep 05, 2015 | Edvard

The Basics of Electrical Bus Protections (Overcurrent, Differential and Undervoltage)


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