VARIATION OF DAMPING RATIO AND SHEAR MODULUS WITH PLASICITY INDEX AND CONFINING PRESSURE

INTRODUCTION
Behaviour of soil under cyclic loading is non-linear

Non-linear behaviour commonly characterised by:

Damping coefficient, D

Shear modulus, G


DEFINITION
Damping coefficient
Is defined as the measure of energy dissipation
Shear modulus
Is the ratio of shear stress to shear strain
Plasticity index
Is the difference between liquid limit and plastic
limit
Confining pressure
Is ....etc

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interline power flow controllers ppt

Abstract

The interline power flow controller (IPFC) proposed is a new concept for the compensation and effective power flow management of multi-line transmission systems. In its general form, the IPFC employs a number of inverters with a common DC link, each to provide series compensation for a selected line of the transmission system. Because of the common DC link, any inverter within the IPFC is able to transfer real power to any other and thereby facilitate real power transfer among the lines of the tra ....etc

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PROJECT REPORT ON
RELAY CO-ORDINATION
Done at FACT, COCHIN DIVISION

ABSTRACT
The purpose of the protective relays and protective relaying systems is to operate the correct circuit breakers so as to disconnect only the faulty equipment from the system as quickly as possible thus minimizing the trouble and damage caused by faults when they do occur. Relays have revolutionized protection control metering and communication in power systems. Relay co-ordination will help to isolate the faulty region in the power system s ....etc

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Fuzzy Logic and Fuzzy Sets


History

Lotfi Zadeh, at the University of California at Berkeley, first presented fuzzy logic in the mid-1960's.

Zadeh developed fuzzy logic as a way of processing data. Instead of requiring a data element to be either a member or non-member of a set, he introduced the idea of partial set membership.

In 1974 Mamdani and Assilian used fuzzy logic to regulate a steam engine.

In 1985 researchers at Bell laboratories developed the first fuzz ....etc

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I would like to have an abstract with the block diagram of the topic above please. May I have it to the following address [email protected]. Thank you ....etc

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Fuzzy Coordination of FACTS Controllers for Damping Power System Oscillations

Abstract
This paper concerns the optimization and coordination of the conventional FACTS (Flexible AC Transmission Systems) damping controllers in multimachine power system. Firstly, the parameters of FACTS controller are optimized. Then, a hybrid fuzzy logic controller for the coordination of FACTS controllers is presented. This coordination method is well suitable to series connected FACTS devices like UPFC, TCSC etc. in damping multi-mod ....etc

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sir,

I want notes on single phase AC voltage Controller-synchronous tap changers..i having exam on this so,please reply me fast.. ....etc

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i need brief information about sound damping properties of non woven in protective equipment for writing article.i kindly request you to send related information based on that topic.my email ID is [email protected] ....etc

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circuit digram of energy saving system using thyristor controllers

circuit diagram of energy saving system using thyristor controllers ....etc

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Presented By;
D. Rai. G. Rainakrishna. S.O. Faried,

Abstract
In This paper investigates the impact of a STATCOM operating in a phase imbalanced mode on damping sub synchronous resonance in series capacitive compensated transmission grid. Phase imbalance has the potential of reducing the energy exchange between the electrical and mechanical sides of turbine-generator and, therefore, damps the sub synchronous oscillations resulting from series capacitive compensation.

read full report
http://ee.iitb.ac npsc2008/NPSC_CD/Data/Or ....etc

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