Load Interconnection Study

Load Interconnection Study

Location: Alberta, Canada

Client: Alberta Electric System Operator

Completion Date: 2010

The Fort McMurray area is the center of oil sands development activity in Alberta. The supply of reliable power is absolutely critical to the operations of these mining projects. Burns & McDonnell assessed the performance of the Fort McMurray 144-kV system to analyze reliability in the area.

  • Steady-state analysis
  • PV/QV analyses
  • Voltage stability analysis

Burns & McDonnell performed voltage stability analysis using the 2011 winter peak scenario to determine the system reactive margin and maximum operating load limits for the existing system. The firm monitored voltages along the Fort McMurray 144-kV transmission system at the Hangingstone, McMillan and Horse River 144-kV buses during the Fort McMurray area load increase. Burns & McDonnell identified critical contingencies and simulated these for the Real Power-Voltage (P-V) and Reactive Power-Voltage (Q-V) analysis. The firm then performed a P-V analysis according to the Western Electricity Coordinating CouncilVoltage Stability Assessment Methodology. The results of the voltage stability analysis showed the existing system load level exceeded the maximum allowed operating load limit and, thus, violated the voltage stability criteria. Under N-1 conditions, the system did not meet the voltage stability criteria. Burns & McDonnell compared teh operating limit for each critical contingency to the existing system load to determine whether the voltage stability criteria were met.

  • 144-kV transmission network
  • 1354-MW load