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Indonesia is a big country which has many isolated power system networks. Sumatera power system is one of the main power system networks in Indonesia that supplies electricity for more than 45 million inhabitants in Sumatera Island. For the transmission topology and load characteristic, there are some dynamic stability problems in Sumatera power system such as voltage and small signal stability. To...
Java Bali Grid has now reached the highest peak load ever at 25,325 MW on 15th September 2017, and the trend is going higher in the future. The fuel mix is dominated by fossil fuel such as coal and gas, and about 8.8% comes from dispatchable renewable energy of hydro and geothermal. Government has set a progressive target of 23% renewable energy in 2025 which may come from dispatchable and intermittent...
Indonesia consists of many isolated electrical power system networks. Sumatera power system is one of the power system networks in Indonesia. It consists of 2 major networks, which are Northern Sumatera system and Central-Southern Sumatera system. Northern Sumatera system supplies two provinces, which are North Sumatera province and Aceh province. North Sumatera province has a loop topology while...
Switching study conducted to support the operation plan of 275 kV transmission line between Padang Sidempuan 275 kV Substation to Payakumbuh 275 kV Substation at the end of 2012. This transmission line will be the system backbone for North System and Middle-South system interconnection. When the interconnection is done, the operation flexibility in Sumatera will be better, in terms of plant load planning...
High Voltage / Extra High Voltage (HV/EHV) performance calculation of lightning stroke used to use thunder days method. With the technology improvement where it can be known the ground flash density, the Lightning Performance of HV/EHV transmission lines can be accurately done by using the ground flash density in the region that are passed by the transmission lines.
High Voltage / Extra High Voltage over-head lines performance to the lightning strikes can be determined by using lightning strike to ground density level. Thus, an evaluation of the High Voltage / Extra High Voltage over-head lines performance calculation can be accurately done using the density of lightning strike to ground on regions that are passed through the transmission lines. Based on the...
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