Research On Ice And Snow Disaster Weather Influence On Beijing Power Grid And The Countermeasures

Ice storm is one of the largest electric power system accident hazard degree.The project first collected the Beijing region in recent years grid icing conditions and fault conditions,on-site environmental and weather conditions,focusing analysis of the "11.4" Icing reason disconnection fault,and carry out icing tests for OPGW overhead ground wire characteristics,transmission lines drawn over the actual thickness of the design ice thickness cause the load is too heavy,leading to the overhead ground wire drawn discharge.Then analyzes the impact of Beijing area temperature,humidity,wind speed,line parameters,alignments and other factors on the line icing conditions give advice grid icing weather warning threshold value;and analyzes the time and space in Beijing fog glaze distribution and meteorology day feature gives rime fog weather warning threshold proposal,but on the basis of meteorological icing data,historical experience and on the run,based on regression analysis,given the thickness of the wire icing meteorological factors meteorological regression equation,and further draw improve the ice map.provide theoretical guidance for similar research and practical solutions icing line failure.