Study On Green Generation Dispatch Mode And Model

The development of generation dispatch mode is relevant to the power technology advancement, reforming for power industry, as well as increasing resources and environmental constrains. To meet the demand of energy saving, emission reduction, the optimization of resource distribution and the large-scale renewable power integration, green Generation dispatch mode is proposed in this paper. Focusing on the promotion of green generation dispatch, this paper is intended to provide a comprehensive and in-depth analysis of the evolutional mode and model of green generation dispatch through analyses on the connotation and extension, key elements of and the approach to green generation dispatch.First, the energy-saving generation dispatch mode and model including the Internal and across areas were studied in accordance with the benefits optimization. Comprehensively considering the unit commitment, economical load allocation, spinning reserve scheduling and emission reduction constraints, the two models with the target of energy-saving were established. The practical case study showed that compared to the average allocation dispatch mode, the mode in this paper and the mode according to designed consumption rate were both better. What is more, due to the advanced modeling technology introducing in this paper which accurately considering the coal consumption curve differences between the multi-type power units, the results of the model will be better than the designed consumption rate mode. In another aspects, in order to promote the optimal energy-saving dispatch, the area for implementing this mode would be widened. The hierarchy dispatch coordination operation based on fix-bound iteration was put forward and the area coordination center and sub-areas model were also established based on the quadratic penalty function method of SUMT. IEEE30 case demonstrated the superiority of this coordination mechanism.Second, embedding the new energy power dispatch mode and model were studied and designed. On the basis of analyzing wind power connecting grid strategy and practices and experiences, three possible dispatch mode with wind power were deeply studied and put forward. That is, cooperating with convention thermal units, the energy-store facilities and bringing in the DSM. The simple case showed that it would be the most the direct method under the cooperating with convention thermal units while would be failed after the amount of wind power connecting into the grid in a result of facing the risk of discarding wind power due to lack of negative spinning reserve. Thus, it had better combine with other methods, such as cooperating with the energy-store facilities. Whatever, without rich energy-stores, it will be necessary to take the high-efficient mode into the considerations. Bringing in the user resources dispatch mode to implement the whole the dispatch will be realizing the optimization of resource distribution and promoting the economy.Finally, the quasi marketization mode and model were also studied and designed. Implementing generation dispatch mode according to the market competition results will gain the both targets of energy-saving and reducing the purchasing costs and maximizing social welfare. Based on the theory of short-term marginal cost pricing and inspired by cost-based power pool in South Korea, this paper establishes a quasi marketization model of generation dispatch, taking into consideration the current electricity system in China. Adopting the two-part electricity price, day-ahead exchange scheduling is formed according to energy price checked by government. The quasi marketization model was also established and furthermore embedded the environmental cost into this model. Practical case demonstrates the superiority of quasi marketization model of generation dispatch. The superiority might contains minimizing the uncertainty of power flow and generation scheduling, stable market price, reducing energy consumption and so on.The research results of the dissertation enrich and develop the green generation dispatch mode theory; It is significant to shed light on the future researches on the optimization of generation dispatch.