Analisa Reduksi Respon Getaran Kabel Konduktor Terhadap Variasi Massa Counterweight Pada Stockbridge Damper

Pradiptya, Resnanda (2023) Analisa Reduksi Respon Getaran Kabel Konduktor Terhadap Variasi Massa Counterweight Pada Stockbridge Damper. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Berdasarkan Kementerian Energi dan Sumber Daya Mineral kapasitas pembangkit listrik di Indonesia kapasitas pembangkit listrik terus mengalami kenaikan setiap tahunnya. Kenaikan tersebut mengakibatkan peningkatan pendistribusian energi listrik ke daerah-daerah. Pendistribusian dapat ditingkatkan dengan menambah jumlah saluran listrik udara. Salah satu kendala pembangunan saluran listrik udara adalah adanya getaran aeolian. Getaran tersebut seringkali dapat mengakibatkan kerusakan pada kabel konduktor. Sehingga stockbridge damper selalu digunakan untuk meredam getaran tersebut. Pada saat ini stockbridge damper asimetris adalah stockbridge damper yang memiliki kinerja yang paling baik. Persebaran variasi berat total pada stockbridge damper asimetris semakin banyak di pasaran. Variasi berat total menjadi acuan penjualan di pasaran. Akan tetapi, perbedaan berat antara kedua counterweight tidak terlalu diperhatikan. Sehingga diperlukan penelitian tentang pengaruh variasi massa counterweight untuk mempermudah pemilihan stockbridge damper. Berdasarkan latar belakang yang telah disampaikan, penelitian tugas akhir ini akan mensimulasikan kabel konduktor dengan sebuah peredam stockbridge damper pada software ANSYS Workbench 2022 R1 dengan analisis Static Structural, Modal dan Harmonic Response. Pemodelan stockbridge damper yang digunakan pada simulasi adalah stockbridge damper yang sering ada di pasaran. Variasi yang digunakan pada simulasi adalah stockbridge damper dengan massa counterweight sisi ringan stockbridge damper tetap 1,5 kg dan variasi pada sisi berat stockbridge damper 2,5 kg, 3 kg, 3,5 kg, 4 kg, dan 4,5 kg pada variasi massa counterweight sisi berat stockbridge damper dengan massa counterweight sisi ringan stockbridge damper tetap. Sedangkan pada variasi massa counterweight sisi ringan stockbridge damper dengan massa counterweight sisi berat stockbridge damper tetap memiliki variasi pada sisi ringan stockbridge damper dengan massa counterweight 0,5 kg, 1 kg, 1,5 kg, 2 kg, dan 2,5 kg dengan massa counterweight sisi berat stockbridge damper tetap 3,5 kg. Dari simulasi yang telah dilakukan respon rasio getaran pada variasi massa Counterweight sisi berat Stockbridge Damper dengan massa Counterweight sisi ringan Stockbridge Damper tetap dan variasi massa Counterweight sisi ringan Stockbridge Damper dengan massa Counterweight sisi berat Stockbridge Damper tetap menunjukkan bahwa frekuensi natural pada kabel konduktor dengan stockbridge damper lebih kecil dibandingkan frekuensi natural pada kabel konduktor tanpa stockbridge damper. Persentase reduksi amplitudo getaran tertinggi terjadi pada variasi stockbridge damper dengan massa counterweight 2 kg dan 3,5 kg sebesar 99,21% pada frekuensi 33,8 Hz. Sedangkan persentase reduksi amplitudo getaran terendah terjadi pada variasi stockbridge damper dengan massa counterweight 1,5 kg dan 4 kg sebesar 77,83% pada frekuensi 30,8 Hz. Pada persentase reduksi amplitudo getaran kemudian dibandingkan dengan massa total stockbridge damper yang sama. Hasilnya menunjukkan bahwa stockbridge damper dengan selisih massa counterweight yang lebih kecil mampu mereduksi amplitudo getaran lebih besar dibandingkan dengan stockbridge damper dengan selisih massa counterweight yang lebih besar.
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According to the Ministry of Energy and Mineral Resources, power generation capacity in Indonesia continues to increase every year. This increase resulted in an increase in the distribution of electrical energy to the regions. Distribution can be increased by increasing the number of air power lines. One of the obstacles in the construction of aerial power lines is the presence of aeolian vibrations. The vibration can often result in damage to the conductor cable. So stockbridge damper is always used to dampen the vibration. At this time the asymmetrical stockbridge damper is the stockbridge damper which has the best performance. The distribution of total weight variations on asymmetrical stockbridge dampers is increasing in the market. The variation in total weight is a reference for sales in the market. However, the difference in weight between the two counterweights is of little concern. So that research is needed on the effect of variations in counterweight mass to facilitate the selection of stockbridge dampers. Based on the background that has been presented, this final project research will simulate conductor cables with a stockbridge damper in the ANSYS Workbench 2022 R1 software with Static Structural, Modal and Harmonic Response analysis. The stockbridge damper modeling used in the simulation is the stockbridge damper which is often on the market. The variation used in the simulation is a stockbridge damper with a fixed counterweight mass of the light side of the stockbridge damper 1.5 kg and variations on the heavy side of the stockbridge damper 2.5 kg, 3 kg, 3.5 kg, 4 kg, and 4.5 kg on variations of the counterweight mass of the heavy side of the stockbridge damper with a fixed counterweight mass of the stockbridge damper. Whereas on the counterweight mass variation on the light side of the stockbridge damper with the counterweight mass on the heavy side of the fixed stockbridge damper, there are variations on the light side of the stockbridge damper with a counterweight mass of 0.5 kg, 1 kg, 1.5 kg, 2 kg, and 2.5 kg with a fixed counterweight mass of 3.5 kg on the heavy side of the stockbridge damper. From the simulations that have been carried out the vibration ratio response on the variation of the mass of the heavy side counterweight of the Stockbridge Damper with the mass of the light side of the fixed Stockbridge Damper Counterweight and the variation of the mass of the light side of the Counterweight of the Stockbridge Damper with the mass of the heavy side of the Counterweight of the Stockbridge Damper still shows that the natural frequency in conductor cables with a stockbridge damper is smaller than the natural frequency in conductor cables without a stockbridge damper. The highest percentage of vibration amplitude reduction occurs in the stockbridge damper variation with a counterweight mass of 2 kg and 3.5 kg of 99.21% at a frequency of 33.8 Hz. While the lowest vibration amplitude reduction percentage occurs in the stockbridge damper variation with a counterweight mass of 1.5 kg and 4 kg of 77.83% at a frequency of 30.8 Hz. The percentage reduction of the vibration amplitude is then compared with the total mass of the same stockbridge damper. The results show that the stockbridge damper with a smaller counterweight mass difference is able to reduce the vibration amplitude greater than the stockbridge damper with a larger counterweight mass difference.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	ANSYS Workbench, Counterweight, Kabel Konduktor(Conductor Cable), Stockbridge Damper.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA355 Vibration. T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Resnanda Pradiptya
Date Deposited:	14 Aug 2023 07:02
Last Modified:	14 Aug 2023 07:02
URI:	http://repository.its.ac.id/id/eprint/102747

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