Abstract
Badak LNG is a company that operates the largest LNG Plant in Indonesia with maximum production capacity of 22.5 MTPA. The company operates twelve (12) steam turbine generators and one gas turbine generator and one diesel engine generator to supply electricity for process, utility, storage, loading and plant support facility areas, which constitutes the criticality of power generator equipment to keep the reliability of production process. Generator protection relay is one of the equipment that monitors and protects the generator from fault resulting from either internal or external disturbance, preventing the generator from serious damages. Before 2015, Badak LNG used single function relays to protect the generators. The generators are protected by stator differential protection (87), current unbalance (46), loss of excitation (40), reverse power (32), time overcurrent with voltage restraint (51V), and time overcurrent ground (51G). These single function relays wield more disadvantages compared to the newer technology held by the digital relays. Since 2015, Badak LNG have started to replace the single function generator protection relays with the digital type ones.
Highlights
Badak LNG (PTB) is a natural gas liquefaction plant situated in Bontang, East Kalimantan, Indonesia
Badak LNG is comprised of three main areas which are: Process Trains, Storage and Loading, and Utilities
Upgrading protection technology was the best solution to increase the reliability of generators in Badak LNG plant
Summary
Badak LNG (PTB) is a natural gas liquefaction plant situated in Bontang, East Kalimantan, Indonesia. In terms of electricity supply as can be viewed, Badak LNG has fourteen (14) generators to supply power electricity to its system. The vast majority of the generator protections in Badak LNG still utilizes electromechanical relay which only has single purposive function. Over times, these electromechanical relays suffer from problems due to reliability and obsolescence issues. These electromechanical relays suffer from problems due to reliability and obsolescence issues Facing this issue, Badak LNG had an intention to start replacing the existing technology (electromechanical relays) with the latest technology which possesses several advantages, some of which are more complete protection, diagnostic capabilities for optimization, and other operational advantages e.g. sequence of events, present values, and communication capabilities. Upgrading protection technology was the best solution to increase the reliability of generators in Badak LNG plant
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