Research On Optimization Model And Method For Economizing Energy Resources Of Generation Industry In China

Generation industry is one of the most important compositions in energy industry, the effect of energy-saving and consumption-reducing in generation industry play a key role on the achievement of energy-saving goal in national Eleventh Five Plan layout. The problems of energy-saving and consumption-reducing in generation industry were studied from different perspectives, such as composing of power supply, dispatch considering the energy-saving, generation rights trades, peak-valley time-of-use power price in generation-side, generation reserve capacity, direct-supplying electricity trade by generation enterprises.The problem of how to optimize the composing of power supply was studied from the view of harmony development among energy, economy and environment, aiming at the improper composing of power supply in China. The restriction of energy and environment that we faced in electric power industry development was analyzed, then the relation between power and energy, economy, environment were discussed in detail; after that an optimization model was proposed based on the harmony development among the energy, economy and environment, in which the energy-saving and consumption-reducing task of power industry were considered, as well as the effect of electricity price rising on economy. Finally the model was checked in different scenes under given targets.Aiming take full advantage of hydropower resources, the coordinated optimal dispatch of hydropower and thermal power units and hydropower station economic operation were studied. In china, thermal power units are predominant, hydropower units take second place. Considering the running features of hydropower and thermal power units, an optimal model of coordinated dispatch of hydropower and thermal power units and the other model for economizing hydropower station operation were proposed for taking full advantage of hydropower resources and saving fossil energy, applying the theory of large system decomposition-coordination.In order to reduce the wastage of coal effectively, the generation rights trades among hydropower enterprises and thermal power enterprises were studied. The trade mode of generation rights was analyzed. Optimization models of pricing hydro-thermal trade in contract market, day-ahead market and timely market were presented respectively based on the biding functions of hydropower enterprises and thermal power enterprises. Then the algorithm of the models was given.Guiding by energy conservation dispatch, the peak-valley time-of-use power price of generation side and the associated peak-valley time-of-use power price of generation side and sale side were designed. The problems of units'electricity quantity to grid and distribution in different periods were considered. And value parameters were given to units with the optimization model being set up according to economic loss made by environmental contamination of generator emission. The expressions of these parameters were settled. At last, optimization models for designing peak-valley time-of-use power price of generation side and the associated peak-valley time-of-use power price of generation side and sale side were presented. The models'objective is to minimize the average generation cost of consumed energy.Aim to promoting energy-saving and consumption-reducing of generation enterprises, the problems of optimal generation reserve capacity considering consumers'participation and direct-supplying electricity trade between generation enterprises and larger consumers were studied. A model based on interruptible load of consumers for optimizing generation reserve capacity was set up with considering reliability of units, randomly increasing of power demand and reserve function of interruptible load of consumers. Trade subjects of participating in direct-supplying electricity were marked. The biding action of generation enterprises and the purchasing strategy of larger consumer were analyzed on the base of auction mechanism. And applying auction theory, an optimal model of direct-supplying electricity trade between generation enterprises and larger consumers was put forward. At last, an example was provided, which indicated that direct-supplying electricity trade can promote generation enterprises to improve production efficiency and reduce energy consumption.