SUB-STATION EQUIPMENTS & ITS FUNCTIONS
Lightening Arrester
Lightening arrestors are the instrument that are used in the incoming feeders so that to prevent the high voltage entering the main station. This high voltage is very dangerous to the instruments used in the substation. Even the instruments are very costly, so to prevent any damage lightening arrestors are used. The lightening arrestors do not let the lightening to fall on the station. If some lightening occurs the arrestors pull the lightening and ground it to the earth. In any subst ....etc

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I want the full report of the project for my AMIE. its ugent ....etc

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A Switchyard or Substation, consisting of large breakers and towers, is usually located in an area close to the plant. The substation is used as the distribution center where:
electrical power is supplied to the plant from the outside, and
electrical power is sent from the plant
Often there are at least 2 main Buses. Very high voltages (typically 220,000 or 345,000 volts) are present. Gas and oil circuit breakers are used. The gas (e.g. sulfur hexaflouride) or oil is used to extinguish the arc caused when a breaker ....etc

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POWER MANAGEMENT SYSTEM IN BPCL - KR

ABSTRACT
For the protection of power system, relays are used. Different types of relays include electromechanical, static and numeric relays. In an automated system numerical relay has a vital role. The project based on substation automation has been named as Power Management System.
Supervisory control and data acquisition (SCADA) allows a utility operator to monitor and control processes that are distributed among various remote sites. SCADA systems include hardware and software c ....etc

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. INTRODUCTION

Outages of overhead power lines due to lightning strokes are one of the main causes of shortages of electric supplies and economic losses of power utilities. A previous study has concluded that widely separated pole-top arresters can effectively protect distribution line from induced-voltage flashovers. In order to prevent arc fusion of insulated conductors on distribution lines due to lightning flashovers it is recommended to install an arrester at every insulator. Millions of metal - oxide arresters are alr ....etc

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Please visit the below given threads for more details

http://seminarsprojects.net/Thread-lightning-protection-using-lfa-m--1428?pid=15977#pid15977
http://seminarsprojects.net/Thread-lightning-protection-using-lfa-m-seminars-report


Abstract
Overview With the development of national economy and the growing electricity demand, electricity production more and more prominent safety issues. For the transmission line in terms of, Lightning has been the impact of high tension power line reliability an important ....etc

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ABSTRACT

Experts agree that the biggest drain of energy takes place when a vehicle blasts off, pushing through Earth s gravitational pull requires great amounts of fuel, but once they get out of our atmosphere, the rest is easy. If you could cut out that blast off portion, space travel would be easier and much more fuel-efficient. We have seen the different concepts involved for the success of this idea. If this concept comes to light soon, its going to prove very fuel efficient and going to be very cost effective. Here we look in ....etc

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INTRODUCTION

The story of Jack and the Beanstalk is starting to sound more and more plausible every day. A huge, tall structure comes out of the ground and goes straight up through the clouds; at the end is a wonderful, mysterious castle. Experts agree that the biggest drain of energy takes place when a vehicle blasts off, pushing through Earth's gravitational pull requires great amounts of fuel, but once they get out of our atmosphere, the rest is easy. If you could cut out that blast off portion, space travel would be easier and much more ....etc

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Abstract

A measurement campaign has been carried out in 400kV air insulated electricity substation to characterise and model radio frequency impulsive noise with a view to assessing its impact on wireless network technologies. The relatively recent availability of new technologies such as WiFi, Bluetooth and Zigbee means that particular emphasis has been put on higher frequency bands (e.g. 2.4, 5 GHz) than have previously been investigated. A detection system to measure wideband noise over a spectrum extending up to 5.1 GHz ....etc

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Core and windings:
The core of the transformer is made up of thin laminated (insulated) metal sheets of soft iron pressed together. The 3ph primary and secondary is wound over the core. In the transformer used here in 33 KV Duliajan power station switchyard is delta connected at the LV side and star connected at the HV side.
Conservator:
The conservator is a tank containing the oil used for cooling and proper insulation of the core. A level gauge is attached with the conservator to indicate the oil level. There are two types ....etc

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SUB-STATION EQUIPMENTS & ITS FUNCTIONS
Lightening Arrester
Lightening arrestors are the instrument that are used in the incoming feeders so that to prevent the high voltage entering the main station. This high voltage is very dangerous to the instruments used in the substation. Even the instruments are very costly, so to prevent any damage lightening arrestors are used. The lightening arrestors do not let the lightening to fall on the station. If some lightening occurs the arrestors pull the lightening and ground it to the earth. In any subst ....etc

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ABSTRACT
A long flashover arrester (LFA), which comprises of three flashover modules using the creeping discharge effect, is described in this paper. In this design, the total arrester stressing voltage is applied simultaneously to all of the three modules so that the voltage-time characteristics of the arresters are improved. It assured reliable protection of medium voltage (e.g., 10kv) over head power line against both ....etc

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