MICROPROCESSOR BASED IMPEDANCE RELAY



INTRODUCTION

In some applications it is necessary that the relay protecting a part of the power system operate for faults within a certain distance of the location on any one of the lines. The protecting scheme accordingly uses distance relays and is divided into three zones. The zones are classified based on the impedance seen by the relay and the relays are hence called impedance relays.

OPERRATING PRICIPLE OF THE IMPEDANCE RELAY[ ....etc

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Development of microcontroller based over-current relay controls

Senapati, Sambit Kumar and Krishna, A. V. Jay and Rohit , Kumar (2014) Development of microcontroller based over-current relay controls. BTech thesis.

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Abstract

This Project is about designing the controls of an Overcurrent relay using microcontroller. Relay is an electrical switch. Generally it operates on electromagnetic principle for switching action. Over current (OC) relay is a type of relay which performs its switching action based on an input curr ....etc

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Can i get the ppt for the topic, current only directional overcurrent protection in distribution automation challenges and solutions. ....etc

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i am a final year student and there for need to be helped with a complete circuit diagram of overcurrent protection relay using pic microcontroller and the program
thanks in advance for your consideration and look forward for your positive response ....etc

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plz send microcontroller based block diagram based overcurrent
relay ....etc

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Materials Required: A Resistance wire, voltmeter, ammeter, battery, rheostat, meter scale, one way key, connecting wires etc.

Theory: If I be the current flowing through a conductor & V be the potential difference across its ends, then according to Ohm s law
V I
or V = RI
Where, R is the constant of proportionality. It is known as resistance of the conductor.
V/I=R
R depends upon the nature of material, temperature & dimensions of the conductor.

Procedure:
1. Clean the ends of the connecting wires with the help of sand p ....etc

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In an over current relay, there would be essentially a current coil. When normal current flows through this coil, the magnetic effect generated by the coil is not sufficient to move the moving element of the relay, as in this condition the restraining force is greater than deflecting force. But when the current through the coil increased, the magnetic effect increases, and after certain level of current, the deflecting force generated by the magnetic effect of the coil, crosses the restraining force, as a result, the moving element starts movin ....etc

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Hello i want to make over current relay using micro controller so please give list of component that used in project ....etc

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What is an Overcurrent Relay?

An. overcurrent. relay is an electrical protection device designed to cut off the. power supply. to a circuit, appliance, or machine in the event of an overload or failure. These devices typically consist of a manual. circuit breaker.

What is different between overcurrent relay and over load relay?
This a quote from Wikipedia: http://en.wikipediawiki/Relay. You have to scroll way down the page to see: Overcurrent relay. An Overcurrent Relay is a type of protective relay which operates when t ....etc

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