Navbelt and Guiecane

Introduction
Recent revolutionary achievements in robotics and bioengineering have given scientists and engineers great opportunities and challenges to serve humanity. This seminar is about NAVBELT AND GUIDECANE, which are two computerised devices based on advanced mobile robotic navigation for obstacle avoidance useful for visually impaired people. This is Bioengineering for people with disabilities.

NavBelt is worn by the user like a belt and is equipped with an array ....etc

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1. INTRODUCTION
The development and growth of human activities have led to rapid increase in traffic density on roads and highways. As a result, the intensity of traffic noise has gone up to unacceptable levels. The consciousness on noise pollution has become significant in developed nations like USA, Japan, China, UK and Australia. Considering the importance of noise abatement, highway noise barriers have been erected at sensitive locations in these countries.

In Indian context, the highways ....etc

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PRESENTED BY:-
ATUL KUMAR SINHA


WHAT IS a SWITCHYARD ?
Switchyard means collection of electrical equipment where high voltage electricity is switched using of various component.
Electrical switchyards are usually part of a substation where electricity is transformed from one voltage to another for the transmission, distribution.
POWER TRANSMITE FROM POWER STATION TO CUSTOMERS THROUGH SWICHYARD
CIRCUIT BREAKER
A circuit breaker is an automatically-operated electrical switch designed to pro ....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 brea ....etc

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Definition

An accurate electric current transducer is a key component of any power system instrumentation. To measure currents power stations and substations conventionally employ inductive type current transformers with core and windings. For high voltage applications, porcelain insulators and oil-impregnated materials have to be used to produce insulation between the primary bus and the secondary windings. The insulation structure has to be designed carefully to avoid electric field stresses, which could eventually cause insulation breakdo ....etc

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Definition

An accurate electric current transducer is a key component of any power system instrumentation. To measure currents power stations and substations conventionally employ inductive type current transformers with core and windings. For high voltage applications, porcelain insulators and oil-impregnated materials have to be used to produce insulation between the primary bus and the secondary windings. The insulation structure has to be designed carefully to avoid electric field stresses, which could eventually cause insulation breakdo ....etc

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An accurate electric current transducer is a key component of any power system instrumentation. To measure currents power stations and substations conventionally employ inductive type current transformers with core and windings. For high voltage applications, porcelain insulators and oil-impregnated materials have to be used to produce insulation between the primary bus and the secondary windings. The insulation structure has to be designed carefully to avoid electric field stresses, which could eventually cause insulation breakdown. The elect ....etc

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ABSTRACT
An accurate current transducer is a key component of any power system instrumentation. To measure currents, power stations and substations conventionally employ inductive type current transformers. With short circuit capabilities of power system getting larger and the voltage level going higher the conventional current transducers becomes more bulky and costly.
It appears that newly emerged MOCT technology provides a solution for many of the problems by the conventional current transformers. MOCT measures the rotation angle of th ....etc

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Definition

An accurate electric current transducer is a key component of any power system instrumentation. To measure currents power stations and substations conventionally employ inductive type current transformers with core and windings. For high voltage applications, porcelain insulators and oil-impregnated materials have to be used to produce insulation between the primary bus and the secondary windings. The insulation structure has to be designed carefully to avoid electric field stresses, which could eventually cause insulation breakdo ....etc

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Magneto-optical current transformer technology (MOCT)

An accurate electric current transducer is a key component of any power system instrumentation. To measure currents power stations and substations conventionally employ inductive type current transformers with core and windings. For high voltage applications, porcelain insulators and oil-impregnated materials have to be used to produce insulation between the primary bus and the secondary windings. The insulation structure has to be designed car ....etc

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CHAPTER 1
INTRODUCTION
BHEL is the largest engineering and manufacturing enterprise in India in the energy related infrastructure sector today. BHEL was established more than 40 years ago steer them in to a indigenous heavy electrical equipments in India. It has been earning profits continuously since 1971-72 and achieved sales turnover of Rs.21401 million with a profit after tax of RS.4430 million in the year 2007-08 which is a 18.4% increase profit when compared to the 2006-07.
BHEL caters to the core sectors o ....etc

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