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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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.

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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 pre ....etc

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Most of the microprocessors in the world are not in PCs, they are embedded in devices which control traffic for highways, airspace, railway tracks, and shipping lanes to manufacturing systems with robots.

An embedded system is any device controlled by instructions stored on a chip. These devices are usually controlled by a microprocessor that executes the instructions stored on a Read Only Memory (ROM) chip.

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As the petroleum based fuels are on the verge of exhaustion, future transportation needs alternatives. The electric car comes in handy. So an attempt is made to present the basic ideas of an electric car. The relative advantages of electric cars like reliability, non dependence on petrol or diesel, less air pollution etc., and also the disadvantages like higher initial cost, less capacity etc., has also been discussed. Also simple conversion of a gasoline powered car to electric car is also discussed. With more and more new and improved models ....etc

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Most of the microprocessors in the world are not in PCs, they are embedded in devices which control traffic for highways, airspace, railway tracks, and shipping lanes to manufacturing systems with robots. An embedded system is any device controlled by instructions stored on a chip. These devices are usually controlled by a microprocessor that executes the instructions stored on a Read Only Memory (ROM) chip. This is the topic of my seminars. Embedded systems can be used to implement features ranging from the way pacemakers operate and mobile ph ....etc

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