GDL

Design and Simulating Governing Isochronous Control at Geothermal Power Plant Darajat

Skripsi, 027 / 2021 / TPTL
Undergraduate Theses from JBPTPPOLBAN / 2022-11-29 12:54:26
Oleh : Ricky Rofi - 171724029 (ricky.rofi.tptl17@polban.ac.id)
Dibuat : 2022-11-29, dengan 4 file

Keyword : Governor, Isochronous, Kecepatan, Daya Beban
Subjek : Governor, Isochronous, Speed, Load

Governor merupakan komponen untuk mengatur aliran fluida dengan mengontrol bukaan katup sebelum masuk ke turbin uap sehingga putaran turbin dapat dipertahankan pada nilai set-point nya (3000 rpm). Governor memiliki dua jenis karakteristik kontrol yakni droop dan isochronous; dimana perbedaan antara kedua karakteristik tersebut adalah respon terhadap perubahan beban. Pada tugas akhir ini dilakukan simulasi dan perancangan isochronous governors dengan mengacu pada peraturan Permen ESDM No.03 tahun 2007 bahwa kendali generator adalah berjenis free governing system. Berdasarkan hasil simulasi didapatkan hasil desain governor isochronous pada beberapa mode operasi yakni: 1. Mode simulasi start-up didapatkan nilai maximum overshoot (Mp) sebesar 1,001 pu, settling time (ts) berada pada nilai 1487 detik dan variabel proses (PV) stabil pada nilai 3001 rpm; 2. mode simulasi sinkronisasi, nilai maximum overshoot (Mp) adalah 1,00853 pu dan error steady state (Ess) berada pada kisaran 50,418 - 49,25 Hz, dimana ketika sistem dioperasikan dalam keadaan droop, rentang frekuensi berada pada kisaran 51,26 - 47,85 Hz; 3. Mode simulasi pembebanan didapatkan bahwa sistem mengalami peningkatan kecepatan sebesar 0,0003 pu dan berosilasi pada rentang nilai 1,0003-0,9997 pu, dimana pada saat sistem dioperasikan secara droop sistem akan berosilasi pada kisaran nilai 1,0009-1.0001 pu. Kata Kunci: Governor, Isochronous, Kecepatan, Daya Beban.

Deskripsi Alternatif :

Governor is a component that use to regulate fluid flow by controlling valve before entering the steam turbine so the turbine rotation can be maintained at it’s set-point value (3000 rpm). The governor has two types mode control characteristics, droop and isochronous; where the difference between the two characteristics is the response to changes in load. In this final project, simulation and design of isochronous governors is carried out with referring to the regulation of the Minister of Energy and Mineral Resources No. 03 of 2007 that generator control must operate with free governing system. Based on simulation the isochronous governor design gets results in several operational modes: 1. Start-up simulation mode, the maximum overshoot (Mp) value is 1.001 pu, the settling time (ts) is 1487 seconds and the process variable (PV) is stable at a value of 3001 rpm; 2. Synchronization simulation mode, the maximum overshoot (Mp) value is 1.008 pu and the error steady state (Ess) is in the range of 50.418 - 49.25 Hz, where when the system is operated in a droop mode, the frequency range is in the range of 51.26 - 47.85 Hz; 3. At the loading simulation mode shows that the system has an increase in speed of 0.0003 pu and oscillates in the value range of 1.0003-0.9997 pu, where when the system is operated in a droop manner the system will oscillate in the range of values of 1.0009-1.0001 pu. Keywords: Governor, Isochronous, Speed, Load.

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