Auto-generation Method of Day-ahead Forecast Power Flow Based on Multiple Data Sources
Shi Yan · Dianli xitong zidonghua · 2012
In view of the problems such as rough calculation,large errors in the results of the traditional security check on power grid dispatching planning,an auto-generation method of the day-ahead forecast power flow based on multiple data sources is proposed,which can generate the day-ahead forecast power flow automatically and improve the precision and accuracy of security check on power grid dispatching planning.First,proceeding from the day-ahead forecast power flow calculation model,an analysis is made of the parameter constitution in the normal operation mode of day-head power grid.Then,by means of parameter acquisition and parameter fitting from multiple data sources,various parameters for use in the day-ahead forecast power flow calculation are automatically generated to preliminarily form the model for the day-ahead forecast power flow calculation.Finally,the model of power flow is adjusted according to the combined dynamic power flow algorithm to automatically generate the convergent day-head forecast power flow.Application of the dispatching planning security check system in Lanzhou power grid has verified the convergence and effectiveness of the proposed method.