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First, the commercial…..

Suggested Research Areas University of Illinois Power Affiliates Program May 14, 2004 Jennifer T. Sterling Director, Transmission Planning. First, the commercial…. Exelon Energy Delivery ComEd

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First, the commercial…..

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  1. Suggested Research AreasUniversity of Illinois Power Affiliates ProgramMay 14, 2004Jennifer T. SterlingDirector, Transmission Planning

  2. First, the commercial….. Exelon Energy Delivery • ComEd • ComEd is responsible for the transmission, distribution and sale of electricity to more than 3.4 million wholesale and retail customers in Northern Illinois. ComEd serves 70 percent of the state’s population. • PECO Energy • PECO Energy is responsible for the transmission, distribution and sale of electricity and gas to customers in the five-county Philadelphia region. It provides services to 1.5 million electric customers and more than 430,000 natural gas customers.

  3. Overview of Exelon Transmission Systems • ComEd • 11,300 Square Miles – Northern third of Illinois • All Time Peak – 22,054 MW • 4785 Miles of Transmission / 270 Miles Underground (mostly city) • Transmission Voltages – 765kV, 345kV, 138kV • PECO • 2400 Square Miles – Philadelphia, Delaware, Chester, Montgomery, Bucks Counties in Eastern Pennsylvania • All Time Peak – 8164 MW • 1160 Miles of Transmission / 100 Miles Underground (mostly city) • Transmission Voltages – 500kV, 230kV, 138kV

  4. Topics related to the Blackout • Power System Visualization • Real-time Human Factors Analysis • Alarm filtering and management • Reactive Margin including Locational Requirements • Reactive Power Pricing and Markets • Effects of Industry Restructuring on Reliability • Load Modeling under dynamic conditions

  5. State Estimator Improvements • State Estimator Definition (1) • Computer software that redundant measures of quantities related to system state as input and provides an estimate of the system state. • Used to confirm that the monitored electric power system is operating in a secure state by simulating the system both at the present time and one step ahead, for a particular network topology and loading condition. • Operators use SE data to review critical contingencies to determine whether possible future states are within reliability limits. • (1) Definition from Interim Report: Causes of the August 14th Blackout in the United States and Canada, U.S.-Canada Power System Outage Task Force, November 2003. • Analytic methods to test the State Estimator robustness • How to deal with loss of data or bad telemetry? • Self Healing State Estimators

  6. Other Ideas • Use of probabilistic tools in operations and planning • Need tools that can simulate short periods of time and help system operators preserve reliability with economically responsible decisions • Tools that would account for effects of changing generation and load in different switching scenarios • Right now, planning standards are deterministic • Predefined number of contingencies at defined load levels with static equipment ratings

  7. Even more ideas • Control issues with new types of generation • Distributed Generation • Wind Generation • Maximize protection system reliability through the use of current IT technologies. • Algorithms for monitoring system dynamic parameters to identify emergent stability limitations and oscillatory modes.

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