Study of Bidding Mechanism of Demand Response for Generation Company

• Main Authors: Chang, Wen-Chi, 張文奇
• Other Authors: Lu, Tai-Ken
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/pqw236

博士 === 國立臺灣海洋大學 === 電機工程學系 === 103 === With the fast development of economy, the demand for energy has increased drastically in the peak period. As the result, the Generation Company has faced with challenges of high fuel price, supply and demand imbalance in some areas and so on. In order to mitigate those problems, Demand Response (DR) provides an advanced way of demand controls. Generation companies design each plan for reducing load according to their cost. It solves high cost of generators working, especially in the emergency condition, line congestion areas, peak time, and system needle loads. With the generation capacity of cogeneration systems and independent power producers growing year by year, some issues of cogeneration systems and standby generators will be discussed in this dissertation, such as the installed capacity, the generation capacities and prices that attend the demand response programs in Taiwan. This study investigated the power purchase cost calculation methods applied by power companies to establish demand response programs. Three calculation methods (economy, reliability, and emergency) yielded dissimilar power purchase costs, enabling power companies to determine the costs of implementing various demand response programs and formulate flexible bidding strategies in the free electricity market. To participate in market bidding, power companies must establish various types of demand response programs. From a supply-and-demand perspective, these programs can be categorized as programs in which user demand exceeds program demand or programs in which program demand exceeds user demand. This study applied the Nash equilibrium model and the difference priority theory to establish a matching mechanism in order to implement the program in which user demand exceeds program demand and program demand exceeds user demand, respectively. The results of the case simulation indicated that the Nash equilibrium model and the difference priority theory, which were used to determine the matching mechanism for multiple demand response programs, can enable power companies to acquire various types of electricity (generation load and user load) at low costs. Therefore, supply-and-demand balance can be achieved. Keywords：Generation Company, Demand Response, Nash Equilibrium, Difference Priority Theory.