Title:

Impact of Short Circuit and Phase Locked Loop Parameters on the Small-Signal Behaviour of a VSC-HVdc Converter

Date:

12:00 Noon, Tuesday, May 13, 2014

Location:

Holiday Inn South, 1330 Pembina Highway, Winnipeg

Speaker:

Jenny Zhou

Abstract:

The impact of phase locked loop (PLL) parameters on the dynamic and steady-state behavior of a Voltage Sourced Converter (VSC) in an HVdc transmission system is determined as a function of the system strength (parameterized by the short circuit ratio – SCR).  This is achieved by using a linearized small signal model of the converter system and its controls. The model is validated via electromagnetic transients simulation of the fully detailed large signal model. An interesting result from this study is that the maximum power transfer capability of the VSC-HVdc converter is affected by the PLL gains, and that the theoretical limit (obtained from static voltage stability analysis) is approachable as the PLL gains become very small. This presentation shows that gains of the PLL, particularly at low SCRs greatly affect the operation of the VSC-HVdc converter and that operation at low SCRs approaching 1.3 is very difficult.

Speaker Bio:

Jenny Zhou received the B.Sc. degree in Electrical Engineering from the Southeast University, China in 1988, the M.Sc. degree and the Ph.D. degree in Electrical and Computer Engineering at the University of Manitoba in 2003 and 2013, respectively. After graduation she was with the major power utilities in China for 11 years. In 2009, Jenny joined Teshmont Consultants LP, where she currently holds the position of Senior Supervising Engineer. Prior to that she has been with Manitoba HVDC Research Centre for 7 years where she worked as Senior Simulation Application and Support Engineer. Her interests are system transients in interconnected AC-DC systems. She is a CIGRE WG member of B4.64 “Impact of AC System Characteristics on the Performance of HVDC schemes”, and a registered Professional Engineer in the Province of Manitoba, Alberta and Newfoundland and Labrador.

Cost and Registration:

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

Early Registration

  • IEEE Members – $16.00
  • Non-Members – $20.00

Late Registration

  • IEEE Members – $18.00
  • Non-Members – $22.00

The IEEE PES Winnipeg Chapter must guarantee a minimum attendance to the hotel, so please take a moment to register early by RSVP to Kang Liuby Friday Noon, 9 May 2014, in one of the following ways: