Calculation And Analysis In Power Network Line Loss Based On Parameter Estimation

Combine of a actual power grid, we select the line loss calculation on behalf of the day.Take the entire load measurement data of 24 points and collect grid structure parameters.First of all, loss of electricity can be approximately calculated according to the preliminary theory Approximation. To 35kV voltage transmission main network,use the law of power trend.To distribution network using equivalent resistance approximate calculation method to do to get the initial value.35kV transmission network is introduced state estimation to calculat the value making use of rapid decomposition of PQ state estimation of Algorithms for processing raw data.To distribution network, due to the relative lack of measured data, using data interpolation or data least squares fitting way for suspicious data points and bad points.If the first data analysis of the data interpolation can not achieve the requirement,then again the least-squares fitting data.This topic selected a actual power grid to illustrate the effectiveness of this approach. Finally, the overall programming of parameter identification based on theory of power grid line loss calculation is given.In the last the design of a specific line loss calculation and analysis software system is introduced.