To fully understand the application of advanced power system technologies, and techniques such as ultra-high-voltage transmission, FACTS, HVDC and tie-line network interconnection, the Korea Electric Power Research Institute (KEPRI) is developing and installing a large-scale power system simulation and study facility, the KEPS Simulation Center.

Korea Electric Power Co. (KEPCO) is expecting to use the real-time aspects of the KEPS simulation facility to perform detailed digital simulation studies of electromagnetic/electro-mechanical transient phenomena in the power network. Interactions between equipment such as protective relays, controllers and power electronic devices will be studied in detail. KEPCO will also test and investigate the performance and correct operation of protection systems, regulators, stability control devices and various advanced FACTS systems. Additionally, KEPCO expects the KEPS facility to serve as a training and education center for power system researchers and students, as well as KEPRI and KEPCO engineers and operators.

The core of KEPS simulation facility is the Real-Time Digital Simulator (RTDS). The hardware architecture of the RTDS is based on parallel processing. Several digital signal processors (DSP) participate in the simulation of the network solution as well as the individual power and control system components connected within the network.

The simulator has been in commission for more than a year, and KEPRI has conducted research into the development and operation of KEPCO's transmission system with the focus on the following subject areas: field measurement and investigation of fast surge phenomena in electric power systems, including simulations using the EMPT and KEPS; saturation, hysteresis and inrush current associated with transformers; 765-kV KEPCO system studies involving load flow, transient and dynamic stability; and protection and control equipment testing.
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