Sensitivity Analysis Work on Load Modeling

Project: Research project

Project Details

Description

Sensitivity Analysis Work on Load Modeling Sensitivity Analysis Work on Load Modeling Statement of Work for Sensitivity Analysis Work on Load Modeling: One of the key challenges to load modeling and the assessment of system performance in response to load dynamic behavior is incorporation of the uncertainty and variation in the load characteristics in the planning studies. One approach is to use Trajectory Sensitivity Analysis (TSA) to perform sensitivity analyses on the changes to the system response trajectory, for given severe disturbances, for variations in the load model parameters. This could enable utility planners to gain a greater understanding of the impact of variations in load-model compositions and other critical parameters to the expected response of the power system and improving reliability. In addition, it will identify how effective, adequate, and flexible the trajectory sensitivity approach is for accomplishing this task. Scope of Work: 1. Start with a heavy summer peak WECC system model. 2. Import the model into a MATLAB environment such as PSAT, and develop the new WECC cmpldw load model in that environment 3. Apply the cmpldw model to all major loads (>5 MW) in the WECC model 4. Perform simulations for four (4) key contingencies using trajectory sensitivity analysis to indentify the possible (i) voltage trajectory, (ii) electrical power trajectory, (iii) rotor speed trajectory, and (iv) system frequency trajectory at major system nodes and generators for variations in the load model parameters. 5. The disturbances to be simulated are (examples, may be refined during the course of the work): a. Loss of two Paloverde Nuclear Units b. Loss of Paloverde to Devers 500 kV path c. Loss of Springerville Vail 345 kV path d. Loss of PDCI 6. The simulations results, simulation tool and models and instructions on how to run the tool are also deliverable at the end of the project. 7. EPRI will be engaged during the course of the work to guide the simulation work and presentation of the results and also assumptions made on load model parameter variations. 8. For the results frequency, voltage and generator electrical power and speed should be monitored at major EHV locations (e.g. Paloverde, Springerville, Devers, Valley, Vincent, Midway, etc.)
StatusFinished
Effective start/end date4/1/137/31/14

Funding

  • Electric Power Research Institute: $107,402.00

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