LIU Haifeng, XU Jian, HU Weitao, et al. Research on Pressure Forecasting Method of SF6 Density On-line Monitoring Device Based on BP Neural Network[J]. 2021, 40(4): 26-31.
LIU Haifeng, XU Jian, HU Weitao, et al. Research on Pressure Forecasting Method of SF6 Density On-line Monitoring Device Based on BP Neural Network[J]. 2021, 40(4): 26-31.DOI:
pressure value of GIS equipment is easy to fluctuate under the influence of environmental factors
which affects the judgment on equipment operation state.This paper mainly studies the prediction method of SF
6
pressure based on BP neural network.By analyzing the influence of internal and external factors such as ambient temperature
temperature transition rate
relative humidity
wind speed
weather type and conductor current on the change of SF
6
pressure
the prediction model of BP neural network is established to predict the pressure value of SF
6
on-line monitoring device
which provides data reference for the normal operation of mo
nitoring device This paper also puts forward the discrimination strategy for the reason of pressure reduction on GIS equipment.By selecting the gas pressure and the corresponding natural environment and conductor current data of a typical SF
6
on-line monitoring device of GIS equipment in an UHV substation for simulation calculation
the results show that the accuracy of SF
6
pressure prediction results can reach more than 98.5%
therefore the correctness of theoretical analysis has been verified.