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Creators/Authors contains: "Kohansal, Mahdi"

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  1. ; ; (, IEEE Transactions on Power Systems)
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  2. ; ; ; (, IEEE Transactions on Power Systems)
    null (Ed.)
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  3. ; ; (, IEEE International Conference on Smart Grid Communications)
    One month of supply bids in the California ISO day-ahead energy market are analyzed in this paper. A total of 1.5 million records of bid data are studied. The bids are studied based on their types and their distribution at different hours. The relationship between the market price and the offered supply capacity are investigated. A data-driven estimate is provided for the aggregated supply curve and accordingly the price elasticity of supply is identified for hours that price is highly inelastic. Importantly, this analysis shows the impact of the recent high capacity installations of renewable generation in the state of California on electricity price and price inelasticity. Finally, the undesirable consequences of price inelasticity, such as on creating price spikes and exercising market power, are discussed. 
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  4. ; (, IEEE PES North American Power System Symposium)
    Recent reports from Independent System Operators (ISOs) have raised some concerns about the impact of convergence bids (CBs) on nodal electricity markets. In particular, in some cases, there are concerns about cases where CBs are profitable for some market participants without increasing market efficiency significantly or even decreasing market efficiency. The latter occurs when CBs create price divergence instead of price convergence across the day-ahead and real-time markets. Accordingly, in this paper, we investigate the sensitivity of nodal electricity market price to CBs and seek to build an analytical foundation to explain under what conditions placing a CB at a bus in a nodal electricity market can create price divergence at that bus. Illustrative test cases are discussed to provide intuitions and engineering implications of the results on sensitivity analysis. 
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