Analisis Partial Discharge Pada Saluran Kabel Tegangan Menengah 20 kV (Studi Assesmen SKTM di PT. PLN (Persero) UP3 Menteng)

Abstract

This study aims to determine the status of the cable condition to the emergence voltage of Partial Discharge, as well as the status of the cable to discharge the Partial Discharge. Measurements were made at PT PLN (Persero) UP3 Menteng on TD 09-PM 4A Segment Goat Feeders. This research uses a descriptive method. This study carried out measurements of the release of charge and voltage at each phase in the segment. After measuring the discharge of a single segment, data analysis is then performed to determine the value of Partial Discharge, then the value is accumulated to conclude the condition of cable failure risk that refers to standards set by PLN.The results showed that the status of the cable to the voltage appears Partial Discharge. PDIV value of 17.3 kV can be interpreted PDIV> Uo. PDEV value of 8 kV, can be interpreted PDEV <U0. So that PDIV> U0 and PDEV <U0 fall into the category of cable status quite poorly with Point 2. Cable Status Against Load Discharge. PD max and PD Level values ​​range below 500 pC. So that the load can be interpreted as below or equal to 500 pC, Y <500 pC or Y = 500 pC in the cable status category either with point 1. If pont 2 and point 1 are added up then the result is point 3. Point 3 can be concluded with dark green . The risk of cable failure in the TD 09 to PM 4A segment is low and the cable status is quite good. The follow up is that within a period of 12 months, this segment must be re-measured to determine the condition of the risk of cable failure.
 
 ABSTRAK
 Penelitian ini bertujuan untuk untuk mengetahui status kondisi kabel terhadap tegangan munculnya Partial Discharge, serta status kabel terhadap pelepasan muatan Partial Discharge. Pengukuran dilakukan di PT PLN (Persero) UP3 Menteng pada Penyulang Kambing Segmen TD 09-PM 4A. Penelitian ini menggunakan metode deskriptif. Penelitian ini dilakukan pengukuran pelepasan muatan dan tegangan pada setiap fasa pada segmen tersebut. Setelah dilakukan pengukuran pelepasan muatan satu segmen maka selanjutnya dilakukan analisis data untuk mengetahui nilai Partial Discharge kemudian nilai tersebut diakumulasikan hingga menjadi kesimpulan kondisi resiko kegagalan kabel yang mengacu pada standar yang telah ditentukan oleh PLN. Hasil penelitian menunjukkan bahwa status kabel terhadap tegangan muncul Partial Discharge. Nilai PDIV sebesar 17,3 kV perfasa dapat diartikan PDIV > Uo. Nilai PDEV sebesar 8 kV perfasa, dapat diartikan PDEV < U0. Sehingga PDIV > U0 dan PDEV < U0 masuk kategori status kabel cukup buruk dengan Point 2. Status Kabel Terhadap Besar Pelepasan Muatan. Nilai PD max dan PD Level berkisar dibawah 500 pC. Sehingga dapat diartikan besar muatan dibawah atau sama dengan 500 pC, Y < 500 pC atau Y = 500 pC masuk kategori status kabel baik dengan point 1. Jika pont 2 dan point 1 dijumlahkan maka hasilnya poin 3. Poin 3 dapat disimpulkan dengan warna hijau tua. Resiko kegagalan kabel pada segmen TD 09 to PM 4A adalah rendah dan status kabel tersebut cukup baik. Tindak lanjutnya yaitu dalam jangka waktu 12 bulan, segmen ini harus kembali diukur untuk mengetahui kondisi resiko kegagalan kabel.

Characteristic Testing of the Ground Cable Using Tan Delta (Td) Test Method on Two Segments of the Medium Voltage Cable Menteng Area

“…Testing of ground cables (SKTM) is one way to see how the condition of the cables is considering the difficulty of detecting interference points so that preventive maintenance must be carried out to prevent SKTM interference [3]. The test guidelines on ground cables based on research journals [5] refer to IEC 60502 -2 in which one of the tests on ground cables (SKTM) is Tan Delta (TD). Tan Delta (TD) testing on cables serves to measure the magnitude of dielectric losses by looking at the extent of the delta angle shift, because the more the value of Tan Delta, the greater the dielectric losses on the cable and the faster the insulation of the cable undergoes aging [6,7].…”