Earth Fault Relay in a Single Phase Power System.

EARTH FAULT RELAY IN A SINGLE PHASE POWER SYSTEM. Under the guidance: Mi!! . SU"HOLA$SHMI PARI%A A!!t. Pr&'e!!&r ( %e+t. &' EEE( "HATTA)HARYA MITS MIT S RA RAY YAGA%A

Pre!ented "# "#: : ANIMESH RO ROY Y )HIRAN*IT )HIRAN*I T PAL SOUMYA SOUMY A SAYAN %ASG SAYAN %ASGUP UPT TA SHASHAN$ SHEH$AR

)ONTENTS Intr&ducti&n  W&r,ing Princi+-e  T  Tran!'&rer ran!'&rer  Recti/er  )a+aciti0e /-ter  %i&de  Re!i!t&r  Stri+ 1&ard  23452367 0&-tage regu-at&r  ATMEGA68  L)%  P&tenti&eter  Re-a#  )&nce+t &' earth 'au-t re-a#  )&nc-u!i&n. 

)ONTENTS Intr&ducti&n  W&r,ing Princi+-e  T  Tran!'&rer ran!'&rer  Recti/er  )a+aciti0e /-ter  %i&de  Re!i!t&r  Stri+ 1&ard  23452367 0&-tage regu-at&r  ATMEGA68  L)%  P&tenti&eter  Re-a#  )&nce+t &' earth 'au-t re-a#  )&nc-u!i&n. 

INTRO%U)TION 

Many developing countries confront widespread theft of electricity from government owned power utilities.

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In India electricity theft leads to annual losses estimated at US$4.5 billion, about .5 percent. !ho are the losers""

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#onest consumers, poor people, and those without connections, who bear the burden of high tariffs, system inefficiencies, and inadeuate and unreliable power supply.

INDIA’S GENERATION CAPACITY

WOR$ING PRIN)IPLE  The earth 'au-t re-a# i! a de/nite tie &0er current re-a# 9ith an additi&na- -&9+a!! /-ter.   Tri+-e har&nic! are &' +articu-ar i+&rtance !ince the!e har&nic! are additi0e and c& +ha!a- in a three +ha!e !#!te and thu! a++ear in the !#!te neutra- &r in an earth 'au-t re-a# a! er& !e;uence @=  6?68 dut# c#c-e.

L)% PINS )ONNE)TE% A 687 ALPHANUMERI) L)% WHI)H IS )ONNE)TE% WITH u) 9ith PORT).  L)% )&and Pin!:  RSREGISTER SELE)T )ONNE)TE% TO PORT) PIN 6.  RWREA% WRITE SELE)T )ONNE)TE%  TO PORT) PIN 7.  ENENA"LE )ONNE)TE% TO PORT) PIN . 

 )ONTINUATION OF L)% PINS PIN