?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=ESTIMASI+FREKUENSI+JANGKA+PENDEK+BERBASIS+%0D%0AZERO+CROSSING%0D%0A&rft.creator=ROBERT+LIE+NASBUCK%2C+0915031099&rft.subject=Teknik+Elektro.+Rekayasa+elektronik+Nuklir&rft.description=Frekuensi+adalah+salah+satu+parameter+penting+dari+operasi+sistem+tenaga+listrik.+Gangguan-gangguan+dapat+mengakibatkan+perubahan+frekuensi+dan+dapat+merusak+peralatan-peralatan+listrik.+Tidak+terdapatnya+peralatan+ukur+frekuensi+pada+setiap+tempat+menyebabkan+informasi+frekuensi+tidak+dapat+diperoleh.+Estimasi+frekuensi+adalah+salah+satu+cara+mengetahui+besar+nilai+frekuensi+dalam+jangka+waktu+yang+pendek.%0D%0A%0D%0ATujuan+dari+tugas+akhir+ini+adalah+mengestimasi+frekuensi+jangka+waktu+pendek+dari+sistem+tenaga+listrik+dengan+menggunakan+metode+berbasis+zero+crossing.+Estimator+menggunakan+filter+moving+average+dan+interpolasi+untuk+memperoleh+gelombang+yang+diestimasi.+Studi+kasus+dilakukan+pada+sistem+tenaga+listrik+yang+disimulasi+dan+kasus+real+menggunakan+program+MATLAB.+Estimator+frekuensi+menggunakan+data+sekunder+dari+penelitian+yang+sudah+terpublikasi%2C+data+yang+diukur+(data+real)+dan+data+dari+simulasi.%0D%0A%0D%0AHasil+pengujian+menunjukkan+estimator+frekuensi+jangka+pendek+berbasis+zero+crossing+dapat+bekerja+dengan+baik+untuk+mengestimasi+frekuensi+dan+dapat+mendeteksi+adanya+gangguan+seiring+dengan+perubahan+frekuensi+yang+melebihi+standar.+Jumlah+sampel+data+per+siklus+memegang+peranan+penting+dalam+estimasi+frekuensi.+Data+terdiri+dari+840+sampel.+Pada+kasus+pertama+saat+tegangan+434+volt%2C+maka+ADC+bernilai+-33%2C54.+Pada+tegangan+294+volt%2C+maka+ADC+bernilai+-93%2C74.+Estimator+frekuensi+berbasis+zero+crossing+juga+mampu+mengestimasi+frekuensi+gelombang+dengan+jangka+waktu+tertentu.+Berdasarkan+standar+IEC+61000-4-30+bahwa+toleransi+error+estimasi+frekuensi+sebesar+1%25.+Penelitian+ini+menghasilkan+error+untuk+ketiga+skenario+%3C+1+%25.%0D%0A%0D%0AKata-kata+kunci%3A+frekuensi%2C+estimasi%2C+jangka+pendek%2C+zero+crossing.%0D%0A%0D%0A%0D%0A%0D%0AABSTRACT%0D%0A%0D%0AFrequency+is+one+of+the+important+parameters+of+the+power+system+operation.+Disturbances+can+result+in+changes+in+frequency+and+can+damage+electrical+equipment.+The+absence+of+measuring+equipment+at+each+spot+frequency+causes+the+frequency+information+can+not+be+obtained.+Frequency+estimation+is+one+method+to+determine+the+frequency+value+in+the+short-term.%0D%0A%0D%0AThe+aim+of+this+undergraduate+thesis+is+to+estimate+the+frequency+of+the+short-time+period+of+the+power+system+using+the+method+based+on+zero+crossing.+Estimator+uses+moving+averages+filter+and+interpolation+technique+to+obtain+a+wave+to+be+estimated.+The+case+study+conducted+on+a+power+system+that+has+been+simulated+and+real+power+system+case.+All+programming+is+written+using+a+MATLAB+programming+language.+Frequency+estimator+based+on+zero-crossing+is+able+to+estimate+the+frequency+of+the+wave+with+a+certain+length+of+time.%0D%0A%0D%0AThe+test+results+show+a+estimator+based+on+the+zero+crossing+can+work+well+to+estimate+the+short-term+frequency+and+can+detect+the+presence+of+disturbances+due+to+the+change+in+frequency+is+more+than+standard.+The+number+of+sampling+data+per+cycle+plays+an+important+role+in+the+frequency+estimation.+Data+consisted+of+840+samples.+In+the+first+case+when+the+voltage+is+434+volts%2C+the+ADC+is+worth+-33.54.+On+the+294+volt+voltage%2C+the+ADC+is+worth+-93.74.+%0D%0A%0D%0AKeywords%3A+frequency%2C+estimation%2C+short-term%2C+zero+crossing.%0D%0A&rft.publisher=UNIVERSITAS+LAMPUNG&rft.date=2016-08-01&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F24228%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F24228%2F3%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F24228%2F2%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++ROBERT+LIE+NASBUCK%2C+0915031099++(2016)+ESTIMASI+FREKUENSI+JANGKA+PENDEK+BERBASIS+ZERO+CROSSING.++UNIVERSITAS+LAMPUNG%2C+FAKULTAS+TEKNIK.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F24228%2F