Graduate Seminar – Lina Ramirez

When

April 15, 2015    
1:10 pm - 2:00 pm

Where

3043 ECpE Building Addition
Coover Hall, Ames, Iowa, 50011

Event Type

Title: Monitoring voltage stability on-line across several transmission lines using phasor measurements

Speaker: Lina Ramirez , ECpE Graduate Student

Advisor: Ian Dobson, Sandbulte Professor

Abstract: Frequently power systems are exposed to large transfers of power between areas, which can produce voltage stability problems and blackout.  There is then a need for a fast online tool for monitoring voltage stability, giving awareness to the operators before a voltage collapse event. We use synchrophasor measurements of the complex voltage and current at both ends of multiple transmission lines that connect areas of a power system to monitor the online voltage collapse margin. A new reduction is used to reduce the multiple transmission lines to a single line equivalent and determine how to combine the synchrophasor measurements. Generator reactive power limits can be accommodated. The results show that this methodology can capture the effect of multiple contingencies inside the transmission corridors, giving awareness to the operators about the severity of contingencies with respect to voltage stability.

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