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Archive: Category «High Voltage»

High Voltage

Design of Overhead Transmission Line Foundation

The foundation is the name given to the system which transfers to the ground the various steady state (dead) and variable (live) loads developed by the transmission tower and conductors…. Read more

Sep 19, 2012 | By Edvard

Design of Overhead Transmission Line Foundation
High Voltage

Primary Distribution Voltage Levels

Most distribution voltages are between 4 and 35 kV. In this article, unless otherwise specified, voltages are given as line-to-line voltages; this follows normal industry practice, but it is sometimes… Read more

Aug 10, 2012 | By Edvard

Primary Distribution Voltage Levels
High Voltage

The Structure Of Power System

An interconnected power system is a complex enterprise that may be subdivided into the following major subsystems: Generation Subsystem Transmission and Subtransmission Subsystem Distribution Subsystem Utilization Subsystem Generation subsystem includes… Read more

Aug 09, 2012 | By Edvard

The structure of power system
High Voltage

Shunt Reactor Used In HV and EHV Systems

Main Power System parameters are System Voltages and Frequency which normally indicate the healthiness level (they indicate the level of Generated active and reactive Powers against the load power requirement)…. Read more

Jul 17, 2012 | By Edvard

345kV Shunt Reactor and Associated Primary Equipment
High Voltage

Autoreclosing in Transmission and Distribution Systems

Two main functions of Utility Electric System Operations department are Control and Protection. Control function deals with all operational aspects involved in efficient and optimal dispatching of available real power… Read more

Jul 15, 2012 | By Edvard

Autoreclosing in transmission and distribution systems
High Voltage

FACTS – Flexible AC Transmission Systems

The acronym FACTS stands for “flexible AC transmission systems”. These systems add some of the virtues of DC, i.e., phase independence and fast controllability, to AC transmission by means of… Read more

Jun 21, 2012 | By Edvard

FACTS - Flexible AC Transmission Systems (SIEMENS)
Energy and Power

Circuit breakers classified by interrupting medium

A circuit breaker is defined as “a mechanical switching device capable of making, carrying and breaking currents under normal circuit conditions and also making, carrying and breaking for a specified… Read more

Jun 20, 2012 | By Edvard

Oil circuit breakers
High Voltage

Reducing Distribution Line Losses

One of the main benefits of applying capacitors is that they can reduce distribution line losses. Losses come from current through the resistance of conductors. Some of that current transmits… Read more

Jun 19, 2012 | By Edvard

Reducing Distribution Line Losses
Cables

Measurement of insulation resistance (IR)

The measurement of insulation resistance is a common routine test performed on all types of electrical wires and cables. As a production test, this test is often used as a… Read more

Apr 28, 2012 | By jiguparmar

Megger MIT1020 10-kV insulation resistance testers are all designed specifically to assist the user with the testing and maintenance of high voltage equipment
Energy and Power

Single-Phase Power vs Three-Phase Power

The principal elements of an electric power system are the generating stations, the transmission lines, the substations, and the distribution networks. The generators produce the electricity, the transmission lines move… Read more

Apr 01, 2012 | By Edvard

Single-Phase Power vs Three-Phase Power - Differences
High Voltage

Substation Main Functions and Classification

An electrical substation is an assemblage of electrical components including busbars, switchgear, power transformers, auxiliaries etc. These components are connected in a definite sequence such that a ckt. can be… Read more

Mar 29, 2012 | By Edvard

1Alstom - 45kV Gas-insulated switchgear GIS (F35)
High Voltage

How HV transmission lines affects humans and plants?

By increasing population of the world, towns are expanding, many buildings construct near high voltage overhead power transmission lines. The increase of power demand has increased the need for transmitting… Read more

Mar 20, 2012 | By jiguparmar

How HV transmission lines affects humans and plants?


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