Case Study: One Nevada Transmission Line - Teshmont: Leaders in Power Delivery Engineering

Case Study

One Nevada Transmission Line


Nevada Energy is planning to build 500 kV and 345 kV transmission infrastructure to meet the growing demand in the Las Vegas area. The proposed facilities include:

  •  The Robinson Summit 500/345 kV switching station to facilitate transmission interconnections
  • A total of three 500 kV transmission lines, including series compensation, shunt reactors, and phase shifting transformers, to deliver isolated renewable energy from parts of northern and eastern Nevada to the Las Vegas area
  • Folding the Falcon-Gonder 345 kV line into the Robinson Summit switching station, resulting in two 345 kV lines from Robinson Summit to the existing Falcon and Gonder stations

Teshmont performed system planning and design studies for Nevada Energy for this project, called the One Nevada Transmission Line or ON Line project, which will link the northern and southern transmission systems in Nevada.


Teshmont carried out electromagnetic transient (EMT) and sub-synchronous resonance (SSR) studies for the proposed ON Line project, which includes series and shunt compensated transmission lines having voltage ratings of 345 kV and 500 kV. Teshmont performed the following studies for this project:

  • Dynamic stability studies using PSS/E
  • Electromagnetic transient studies using PSCAD/EMTDC
  • SSR studies using the frequency scan method
  • SSR - turbine shaft transient torque calculations
  • Equipment requirement and design studies
Case Study Category: Power System Studies
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