Design Of Pumped Storage Power Station Based On Abandoned Mines

In recent years,the problem of overcapacity in coal power has become more serious.The huge pits and subsidence areas left after coal mining have brought great challenges to the restoration of the environment.Although the development of renewable energy such as wind and light can reduce the proportion of coal-fired power in the total installed capacity of power generation,it will have higher and higher requirements for flexibility and coordination of power grids.Compared with thermal power stations,hydropower units have start-stop.The rapid characteristics are more suitable for peak shaving,but after a large-scale site selection by the state,there are fewer and fewer sites with the conditions for constructing hydropower stations(especially sites with high head conditions),and discarded.The coal mine has a natural topological structure for constructing a high-head pumped-storage power station.The existing engineering structure of the abandoned coal mine is used to convert it into a pumped-storage power station,which not only can effectively solve environmental problems,but also achieve the effect of balancing the power grid.In this paper,we use the water resources design of the pumping and storage power station in the natural height difference and subsidence area of the Huainan Panyi Mine.Firstly,according to the site selection of the pumped storage power station,we compare the site characteristics of some high head power stations and summarize the site selection basis.Influencing factors,such as geographical environment,water source,water head,height ratio,etc.,combined with these factors to determine whether the Huainan Panyi Mine has the conditions for constructing a pumped storage power station.Secondly,the main parameters such as water level,head,storage capacity and installed capacity of the pumped storage power station and the relationship between each parameter are analyzed,and the model,rated head and rated speed are determined by comparing different technical schemes and parameters.,suction height and group removal method.Finally,the module structure of the pumped storage unit is introduced,and the simulation model of the pumped storage unit is built.The load tracking capability of the system under the condition of turbine and pump is verified by simulation,and the frequency response of the system during load surge and sudden drop.This article has broadened the scope of the location of pumped storage power stations.Providing new ideas for the lack of water resources,the abundance of abandoned coal mines,and the utilization of resources and environmental management in areas with rich renewable energy.It provides a reference for the design of super high head pumped storage units.Fig [65] Table [9] Reference [60]...