Evaluation And Optimization Of Grounding Design For Jixi Pumped Storage Power Station In Anhui

Pumped storage power station is usually located in the region with better rock,The resistance of the soil in the area is very high,so it is difficult to meet the requirements of the target value of grounding design,Good and reliable grounding is the key factor to protect the power equipment reliability and security staff personal safety.So in the high soil resistivity area of pumped storage power station,we must have a set of practical and reliable grounding design.The grounding design evaluation of this paper is mainly aimed at the design of the grounding grid of pumped storage power station in the high resistance area.According to the characteristics of grounding grid of pumped storage power station,the physical model and calculation model of grounding grid of pumped storage power station are established through the field sampling laboratory test and theoretical analysis.Through the various practical grounding grid partition model,considering each partition of grounding grid within and between the shielding coefficient,Calculated Anhui Jixi pumped storage power station grounding grid grounding resistance,analysis of the deep well grounding,water resistivity changes of parameters of power plant meet resistance.Grounding grids into the ground fault current and contact voltage,distribution,the step voltage resistance,grounding grid potential of ground,combined with laboratory corrosion test and p H value test,the grounding material optimization improvement program is proposed.Through pumped storage generating station grounding grid design evaluation and analysis,combined with various network improved technology in practical engineering application,to optimize improve the Jixi pumped storage power station grounding grid technology,guarantee the safety of the normal operation of the power equipment and people,of pumped storage power station grounding grid design provides the design ideas,for pumped storage generating station grounding grid construction to provide the theory guidance.