Analisis Stabilitas Tegangan dan Frekuensi pada Microgrid AC Terhubung DG pada Mode Grid Connected dan Islanding

Arbi, Syamsul (2017) Analisis Stabilitas Tegangan dan Frekuensi pada Microgrid AC Terhubung DG pada Mode Grid Connected dan Islanding. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Microgrid merupakan satu kesatuan unit yang terdiri dari distributed generation (DG) dan beban dalam sistem tenaga listrik. Sumber pembangkit tersebar (DG) meliputi minihidro, photovoltaic, wind turbine, diesel dan lain-lain. Keuntungan teknologi DG diantaranya dapat meningkatkan profil tegangan dan efisiensi penyaluran daya listrik. Namun penambahan DG juga dapat berdampak negatif pada frekuensi dan tegangan karena perubahan yang cepat pada level pembangkitan saat terjadi gangguan. Sistem harus dapat kembali stabil setelah terjadi gangguan. Stabilitas merupakan perhatian penting dalam manajemen energi dan perencanaan sebuah microgrid terlebih lagi pada saat terjadi gangguan pada sistem. Terdapat dua mode operasi dari microgrid yaitu grid connected dan islanding. Pada tugas akhir ini akan dibahas mengenai stabilitas tegangan dan frekuensi pada mode grid connected dan islanding ketika terjadi gangguan seperti lepasnya generator dan grid. Microgrid dimodelkan pada sistem distribusi real GH PLN Payakumbuh dengan menambahkan jenis DG minihidro dan diesel. Pelepasan generator pada mode grid connected tidak terlalu berpengaruh pada kestabilan sistem, namun pada keadaan islanding terdapat kondisi dimana frekuensi sistem gagal kembali ke steady state dan diperlukan skema pelepasan beban atau load shedding untuk mengembalikan kestabilan sehingga keandalan sistem dapat terjaga. ============================================================================= Microgrid is a single unit that consist of distributed generation (DG) and local load in power system. The DG source include minihydro, photovoltaic (PV), wind turbine, diesel and etc. the benefit of DG technology is improve voltage profile and the effiency of the system can be increased. Nevertheless, by using DG system is also bring the negative impact since voltage and frequency stability are likely to be affected because the rapid change in the generation level of each DG in case of imbalance condition. The system must be back to stable after imbalance condition. The stability is key issues in energy management and design of a microgrid especially in case of imbalance condition in the system. There are two types of operation mode of microgrid as grid connected and islanding. This final project will discuss about voltage and frequency stability in grid connected and islanding mode when fault like generator outage and utility off. Microgrid is modeled on real distribution system in PLN Payakumbuh by adding DG type minihydro and diesel. The stability is not to be affected when generator outage in grid connected mode. While in islanding mode there is a condition which frequency fail to return to its nominal and required to shed certain of load to bring the stability and maintain the system reliability.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: distributed generation, grid connected, islanding, kestabilan tegangan dan frekuensi dan microgrid
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3226 Transients (Electricity). Electric power systems. Harmonics (Electric waves).
Divisions: Faculty of Industrial Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User: Syamsul Arbi
Date Deposited: 28 Sep 2017 02:26
Last Modified: 06 Mar 2019 07:10
URI: http://repository.its.ac.id/id/eprint/44910

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