PMU-Aided Voltage Security Assessment for a Wind Power Plant: Preprint

Huaiguang Jiang, Yingchen Zhang, Eduard Muljadi, Jun Zhang

Research output: Contribution to conferencePaper


Because wind power penetration levels in electric power systems are continuously increasing, voltage stability is a critical issue for maintaining power system security and operation. The traditional methods to analyze voltage stability can be classified into two categories: dynamic and steady-state. Dynamic analysis relies on time-domain simulations of faults at different locations; however, this method needs to exhaust faults at all locations to find the security region for voltage at a single bus. With the widely located phasor measurement units (PMUs), the Thevenin equivalent matrix can be calculated by the voltage and current information collected by the PMUs. This paper proposes a method based on a Thevenin equivalent matrix to identify system locations that will have the greatest impact on the voltage at the wind power plant's point of interconnection. The number of dynamic voltage stability analysis runs is greatly reduced by using the proposed method. The numerical results demonstrate the feasibility, effectiveness, and robustness of the proposed approach for voltage security assessment for a wind power plant.
Original languageAmerican English
Number of pages7
StatePublished - 2015
Event2015 IEEE Power and Energy Society General Meeting - Denver, Colorado
Duration: 26 Jul 201530 Jul 2015


Conference2015 IEEE Power and Energy Society General Meeting
CityDenver, Colorado

NREL Publication Number

  • NREL/CP-5D00-63846


  • fault disturbance recorder
  • National Renewable Energy Laboratory (NREL)
  • NREL
  • phasor measurement unit
  • power systems
  • voltage security
  • wind power plants


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