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All Journal Jurnal Teknik ITS Jurnal Darma Agung JAREE (Journal on Advanced Research in Electrical Engineering) Jurnal Nasional Teknik Elektro dan Teknologi Informasi Jurnal Fortech SinarFe7 Sewagati

Vita Lystianingrum

Departemen Teknik Elektro Institut Teknologi Sepuluh Nopember

Author-ID : 352593

Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Public Health Social Sciences Other

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Perbaikan CCT Pada Multi Machine Infinite Bus Dengan Supercapacitor Energy Storage Menggunakan Critical Trajectory Talitha Puspita Sari; Rafin Aqsa Izza Mahendra; Ardyono Priyadi; Vita Lystianingrum; Margo Pujiantara; Sjamsjul Anam
Jurnal FORTECH Vol. 1 No. 2 (2020): jurnal FORTECH
Publisher : FORTEI (Forum Pendidikan Tinggi Teknik Elektro Indonesia)

Transient stability is an important aspect in maintaining the continuity and reliability of the electrical power system when a sudden large disturbance occurs. However, there is a time operation's limitation of the protection system to eliminate disturbance before the system becomes unstable and loses its synchronization. Critical Clearing Time (CCT) is the toleration time to eliminate the fault to keep the system stable. To improve system stability, installing Supercapacitor Energy Storage (SCES) can be one of the methods for extending the CCT values. SCES absorb large amounts of electricity simultaneously when a fault occurs. This paper proposed a determination of SCES' controller effect in extending the CCT. SCES becomes a dummy load and extends the CCT value depending on the controller's ability to respond to a fault. Controller modeling is applied to SCES, which is installed at the bus generator with determined capacity. The modified Fouad and Anderson 9-bus 3-machine system with a single machine to an infinite bus is used to validate the proposed method. Moreover, the critical trajectory method, which is known as a faster calculation and better accuracy than the time domain simulation method, is used to obtain the CCT value. The result shows that the faster controllers work against fault, the higher the CCT value improvement of system CCT. The highest improvement occurs when the controller works at 0.001s.

Efek Penambahan SCES Pada Sistem Multimesin dengan Damping dan Kontroler Berdasarkan Metode Critical Trajectory Ardyono Priyadi; Nazila Iyyaya Fariha; Talitha Puspita Sari; Vita Lystianingrum; Margo Pujiantara; Sjamsjul Anam
Jurnal FORTECH Vol. 1 No. 2 (2020): jurnal FORTECH
Publisher : FORTEI (Forum Pendidikan Tinggi Teknik Elektro Indonesia)

The system can maintain its synchronization under a transient condition. The transient stability system can be evaluated using the critical trajectory method by calculating the Critical Clearing Time (CCT). The advantage of using a critical trajectory method is that the CCT can be found directly and more accurate than the time domain simulation method. This paper proposed the addition of Supercapacitor Energy Storage (SCES) and damping to enhance the transient stability on multi machine system. SCES is an electrical energy storage device that quickly stores and supplies large amounts of electricity, while damper winding damp the oscillations during unstable steady state conditions. Within the addition of SCES and damping in the system, the stability will last longer than before. The stability system is seen by the extended CCT. Furthermore, multi-machine to infinite bus used to validate the proposed method. The test system also includes the Automatic Voltage Regulator (AVR) and the governor

Setting Differential Relay Transformer (87T) dengan Pertimbangan Vector Group pada PLTU Tenayan 2x110 MW Margo Pujiantara; Teuku Rizki Firdausi; Vincentius Raki Mahindara; Vita Lystianingrum
Jurnal FORTECH Vol. 2 No. 1 (2021): Jurnal FORTECH
Publisher : FORTEI (Forum Pendidikan Tinggi Teknik Elektro Indonesia)

PT. Pembangkitan Jawa Bali (PJB) Unit Bisnis Jasa Operasi dan Pemeliharaan (UBJOM) PLTU Tenayan has protection equipment that serves as a support for power generation activities. One of the main protections used on PLTU Tenayan is differential relay transformer (87T). This Differential relay serves to protect main transformers from interference and work quickly and selectively in breaking interruptions. In electrical systems PLTU Tenayan, the main transformer and transformer UAT have a vector group configuration, thus causing the current flowing on both sides of the transformer will be different, and the current perceived by CT on both sides of the transformer will be different, so that the relay operates without any interference. On 9 December 2018, there was a trip on the generator Unit 1 PLTU Tenayan, causing blackout. This incident was allegedly due to lightning strikes on the transmission side of 150 kV. In this research will be conducted analysis of differential relay transformer (87T) with the consideration of vector group on PLTU Tenayan 2x110 MW. Research method with simulation using ETAP software 12.6.0. The results of the analysis of the simulations and calculations in the value of Idiff 1.5 Ie and slope of 120%, this value will be used for the setting differential relay transformer. From the test results obtained that differential relay transformer only works when internal disruption only and does not operate when external interference. So differential relay transformer (87T) safe from fault trip and operation fault.

Co-Authors Adhi Kusmantoro Adityanugraha, Dimas Febry Alfani, Denny Almira Atha Nurhasyimi Anam, Sjamsul Ardyono Priyadi Audie Rahmani Awali Budisantoso Wirjodirdjo Candra Riawan, Dedet Feby Agung Pamuji Ghazi, Argon Luthfan Harus Laksana Guntur Hidayat, Muh. Taufik Imam Himawari, Waseda Imam Robandi Irsad, Muh. Afif Al Kumala, Arimbi Margo Pujiantara Margo Pujiantara Mauridhi Hery Purnomo Mochamad Ashari Mochamad Wahyu Jasa Putra Mochammad Bagas Boma Bismantaka Muhammad Ruswandi Djalal Nampira, Ardi Azhar Nazila Iyyaya Fariha Nazila Iyyaya Fariha Prakasa, Mohamad Almas Pujiantara, Margo Rafin Aqsa Izza Mahendra Rafin Aqsa Izza Mahendra Rakaditra Astungkara Risqiya Maulana Rony Seto Wibowo Saputra, Reki Aji Satria, Moch. Adri Sjamsjul Anam Talitha Puspita Sari Talitha Puspita Sari Talitha Puspita Sari Talitha Puspita Sari Talitha Puspita Sari Teuku Rizki Firdausi Teuku Rizki Firdausi Teuku Rizki Firdausi Trihastuti Agustinah Vicky Pria Permata Vincentius Raki Mahindara Vincentius Raki Mahindara

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