The invention discloses an on-line calculation
system and method for the theoretical
line loss of a
power grid, and the method comprises the steps: reading topological structure data from a GIS
information system in a mode of interface service, and storing the topological structure data in a
line loss calculation
database; reading the parameters of operation equipment from a PMS
system in a mode of interface service, and storing the parameters in the
line loss calculation
database; reading operation data from a Open3000
system and a power utilization information
collection system in a mode of interface service, and storing the operation data in the line loss calculation
database; achieving the querying, reading and verifying of a graphic structure, equipment parameters and operation data stored in the line loss calculation database; employing the Newton-Raphson
power flow algorithm to calculate the theoretical line loss, and displaying calculation results in a mode of
graphics. The system and method effectively improve the accuracy of line loss calculation results and work efficiency, and alleviates the labor of a calculation worker in searching and
processing data. The calculation results are in real time, are accurate and comprehensive, and correctly reflect the condition of
power loss in a transmission process of power.