Research On New Power Grid Planning Model Considering Demand-side Resources

Grid companies shoulder the social responsibility of providing quality electricity service, ensuring to increase the state-owned assets value, meeting the rapidly growing electricity demand and so on. However, when fulfilling these responsibilities, grid companies will face more severe challenges under the new situation. On the one hand, with the rapid development of economy and society, the future electricity demand will grow further, which puts forward new requirements for electricity supply side expansion. On the other hand, grid expansion is facing land, capital and several other constraints, leading to the grid planning difficult to implement.If we cannot solve these problems, not only the grid companies’ power grid service levels will be affected, but also the development of China’s economy and society will be restricted. Thereby it will affect the overall competitiveness of the national economy. Summarizing the above analysis, energy resources in China are relative shortage, and there exist differences in environmental carrying capacity of different regions. So facing serious challenges, grid companies need to change the traditional grid planning model, taking the demand-side resources into the grid development plan. Thus it can ease the problems that current grid planning is difficult to land, grid investment cost is too high and power equipment utilization is low.Specific studies are as follows. First, this paper reviews the research dynamics of demand side resources and the application status of demand-side resources in power system in domestic and external. Relevant experience and inspiration are summarized, providing a comprehensive reference for the new grid planning model considering demand-side resources. Second, this paper comprehensive discusses the status quo of grid planning and future planning work environment. On this basis optimization requirements of grid planning work are proposed. Third, under the premise of defining Demand Side Resources classification, this paper studies the applications of demand-side resources in power scheduling and planning in China. And based on the reality condition of our country, the feasibility to introduce demand-side resources into network planning is demonstrated. Fourth, new grid planning model considering demand-side resources is proposed. The main idea is to take various demand-side energy-saving equipment, energy-saving measures, incentive-based load management projects and so on as planning resources equivalent to the supply side of the substation and the line incorporating grid planning. Fifth, study the power load forecasting method considering diverse demand side resources, and build operational, replicable, scalable calculation model. Finally, this paper evaluates the constructed new grid planning model, and quantitatively and qualitatively comparative analysis the application of new model and traditional model.Through the research, the paper has achieved the following innovative achievements The first is to put forward the new grid planning mode considering demand-side resources, which mainly includes planning principles, involved participators, planning processes. The second is to give the power load forecasting method considering diverse demand side resources, and build operational, replicable, scalable calculation model. The third is to evaluate the new grid planning model considering demand-side resources, which includes internal and external benefit evaluation. This paper provides a new idea for grid planning work, and helps alleviate various contradictions faced by grid planning. Through full using existing resources and scientific excavating potential resources, it can also better to play the role of grid planning in resource allocation optimization, achieving the goal to build a strong, green and efficient grid.