Minimized Financial Losses Due to Interruptions and Voltage Sags with Consideration of Investment Cost

This paper presents an analysis of minimized financial losses due to interruptions and voltage sags with consideration of investment cost. The Modified RBTS Bus 2 test system was used for simulations and Information Technology Industry Council (ITIC) curve was assumed to be a voltage tolerance curve for sensitive industrial customers. Two types of lines were considered: overhead lines and underground cables. Monte-Carlo simulations were used to simulate faults on lines in the Modified RBTS Bus 2 test system. Numbers of unacceptable interruptions and voltage sags were estimated from fault simulations. Results showed that changing certain overhead lines to underground cables can yield minimized financial losses due to interruptions and voltage sags with consideration of investment cost.

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