Sumatra-Java HVDC transmission system modelling and system impact analysis

Indonesia is an archipelago country consisting of five major islands and scattered of approximately 17,000 smaller islands. It is also the fourth most populous country in the world and has relatively high energy demand, especially for electricity. The Java-Bali system is the largest electricity system and the highest electricity demand in Indonesia but with a scarce energy resource. Meanwhile, the Sumatra system has a lower electricity demand but an abundant of available energy resources. Thus, in order to increase the national electrification ratio and the power supply in Java-Bali system, a ± 500 kV high voltage direct current (HVDC) system will be operated in 2018 to transfer 3000 MW from Sumatra island to Java Island through 504 km dc transmission line (including 40 km sea-cable) by a conventional type, i.e. Line Commutated Converter (LCC). This 3000 MW is produced from 6×600 MW coal power plant located in South Sumatra. The rest of this power will be transmitted to the Sumatra System.