Title:

Dynamic Phasors for Small Signal Stability Analysis

Date:

Tuesday, May 17, 2011 at 12:00 noon.

Location:

Holiday Inn South, 1330 Pembina Highway, Winnipeg

Speaker:

U.D. Annakkage, PhD, P. Eng, CEng.

Abstract:

The advantage of small signal stability study over the EMT type or Transient Stability type time domain simulation is that more insight into the mechanism of instability is gained by analyzing the modes, damping, participations and mode shapes. In a typical small signal stability study, the oscillation frequencies of interest are much lower than the system frequency of 60 Hz. This allows simplified models to be used for the synchronous machine and the AC network.

These simplified models are not accurate for sub-synchronous frequencies above 5 Hz. Therefore, for oscillations in the frequency range of 5-60 Hz, it is important to model the dynamics of both the AC network and the generator stator winding flux. The network dynamics can be modeled using Dynamic Phasors to make the small signal stability model valid for the sub-synchronous frequency range.

This presentation will explore the concept of dynamic phasor and how it is used to model the AC network dynamics. The application of this technique is demonstrated for analyzing the interactions between (a) two nearby HVDC converters and (b) torsional interactions between the generator-turbine unit and the AC network.

Speaker Bio:

Udaya D. Annakkage (M’95-SM’04) received the B.Sc. degree in electrical engineering from the University of Moratuwa, Sri Lanka, in 1982, and M.Sc. and Ph.D. degrees from the University of Manchester, U.K., in 1984 and 1987 respectively. He is a Professor at the University of Manitoba, Winnipeg, Manitoba, Canada. His research interests are power system stability and control, security assessment and control, operation of restructured power systems, and power system simulation. He is an editor of IEEE Transactions on Power Systems and a Registered Professional Engineer in the Province of Manitoba, Canada.

Cost and Registration:

  • Cash bar available at Noon.
  • Lunch served at 12:15 PM.
  • Meeting concluded at 1:30 PM.
  • Cost of the meal (payable at the door).

Early Registration (On or before May 13, 2011)

  • IEEE Members – $13.00
  • Non-Members – $17.00

Late Registration (After May 13, 2011)

  • IEEE Members – $15.00
  • Non-Members – $19.00

The IEEE PES Winnipeg Chapter must guarantee a minimum attendance to the hotel, so please take a moment to register early by RSVP to Shao Jieping by Friday Noon, 13 May 2011, in one of the following ways:

Documents:

Gallery: