Studies On The Energy Utilizing Proposal And Multi-energy Supplement System In Ali Area

Situated in the west part of China, even though abundant windy and solar energy exist, All, Tibet is still an area with very harsh natural weather condition due to its high and cold geological attitude, lack of oxygen, coal and oil and construction materials as well as non-exist of railway. Although it is with relatively rich water resources in this area, it is still not practical to resolve power consumption problem in rural area by extending power grids due to its poor water resources development conditions, uneven water resources existence and its scattering population residence for its wide land with little population. At present only very simple resources development modes are used in Ali area, further more a number of disadvantages in these development modes still remain to be difficult to overcome, therefore energy consumption problem in Ali area still remains a problem. Considering the above facts, it will be of great significance for the sustainable development of energy industry in Ali area that a study of regional energy utilizing with multi-energy supplementary development mode is carried out.Based on the detailed analysis of the existing power system in Ali area and its geological conditions, as per the population and economic growth history and future development targets in this area, in this paper, a prediction of powerconsumption volume and power load needed in Ali area in next 15 years made by using index growth model and artificial neural network.Based on an in-depth analysis of various energy existence and present utilizing facts in this area, this paper also raised the major problems in the existing energy system, and thus worked out a comprehensive energy utilizing proposal with water resources as major while windy and solar energy as supplements. By incorporating the power sources location and load prediction results in the energy utilizing proposal, a balance for the power volume needed by 3 counties in the area in three "Five-year Plans" period is also made, the result of which indicates that, it can meet the power demand required by the social-economic development in the region in next three "Five-year Plans" if the water power resources are rationally planned and developed and then a comprehensive energy utilizing proposal by combining solar and winding energy together.Based on the analysis of development features of windy, light and water resources respectively, studies and comparisons of each development mode for multi-energy supplement are made. It is confirmed according to the unique natural condition in Ali area that, a development mode of water pumping energy-store with wind-light supplement has its special advantage, and is feasible both technically and economically.As per the basic systematic analytical theory, an in-depth study of the structure and impact aspects of the wind-light-water supplementary development system is also made. Accordingly systematic analysis and optimizingmathematic models are established. At the same time, according to the geological condition of a project in Gaize county and its power demand, 9 different proposals were worked out for calculation and analysis, therefore a development proposal of pumped storage with wind and light as supplements was finalized as the best through selection and comparison. This paper focuses on the energy utilizing and the systematic analysis for the development mode of wind-light-water resources supplement in the region. The calculation analysis results indicate that, a comprehensive energy utilizing mode with multi-energy supplements is one of effective ways to meet the power consumption requirements for no-water counties and remote countryside, it is also one of a direction towards which the energy industry in All area develops in future.