CT -This paper reports upon the mathematical models and implementation of the Scheduling, Pricing, and Dispatch (SPD) application for the New Zealand Electricity Market (NZEM). SPD analyzes bids for energy offers, reserve offers and energy demands, and recognizes explicitly the effects on bid clearing due to transmission congestion, network losses, reserve requirements, and ramp rate limits. Advanced LP sollution methods are utilized to solve the large-scale constrained optimization problem. Results on a 67-bus test system and the NZEMI are included.

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