PEMODELAN SHEATH VOLTAGE LIMITER PADA METALLIC SHEATH UNDERGROUND CABLE 150 KV TERHADAP TRANSIENT SWITCHING CAPACITOR BANK PLTU FTP 2 LOMBOK
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Koerniawan, Tony
Subject
Teknik Elektro
Datestamp
2022-11-02 07:46:51
Abstract :
Cables are manufactured with metallic sheath which is a metallic sheath for resistance to mechanical damage. When the cable is electrified, a voltage is induced from the core conductor to the grounded metal sheath. This case study was carried out at PLTU FTP 2 Lombok, where when the switching capacitor bank operates, a fast voltage transient occurs and can result in temperature increases and long-term failure of the transmission. To prevent the induced voltage in the cable sheath from increasing, a sheath voltage limiter needs to be added to one end of the cable by installing a single point bonding technique. The sheath voltage limiter is a protective device against finding the voltage connected between the metal casing and earth. The simulation of ATP-EMTP (Alternative Transients Program ? Electromagnetic Transients Program) was used to determine the effectiveness of the sheath voltage limiter in reducing the induced voltage value in the metal sheath cable. The results obtained from the simulation show that the installation of SVL on the generation side can reduce the value of the induced voltage under normal conditions by 87.2% and when transients occur by 89.58% - 94.53%.
Cables are manufactured with metallic sheath which is a metallic sheath for resistance to mechanical damage. When the cable is electrified, a voltage is induced from the core conductor to the grounded metal sheath. This case study was carried out at PLTU FTP 2 Lombok, where when the switching capacitor bank operates, a fast voltage transient occurs and can result in temperature increases and long-term failure of the transmission. To prevent the induced voltage in the cable sheath from increasing, a sheath voltage limiter needs to be added to one end of the cable by installing a single point bonding technique. The sheath voltage limiter is a protective device against finding the voltage connected between the metal casing and earth. The simulation of ATP-EMTP (Alternative Transients Program ? Electromagnetic Transients Program) was used to determine the effectiveness of the sheath voltage limiter in reducing the induced voltage value in the metal sheath cable. The results obtained from the simulation show that the installation of SVL on the generation side can reduce the value of the induced voltage under normal conditions by 87.2% and when transients occur by 89.58% - 94.53%.
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