Patent ID: 9653920
Date: 2017-05-16
CPC Classifications: H02J

Claim:
1. A computer-implemented method for calculating a continuation power flow of an electric power system, comprising: establishing by a computer a first power flow equation for each of a plurality of PQ buses to obtain a plurality of first power flow equations, and establishing by the computer a second power flow equation for each of a plurality of PV buses to obtain a plurality of second power flow equations, wherein a PV bus is a bus having an known injected active power and a known voltage magnitude, a PQ bus is a bus having a known injected active power and a known injected reactive power; establishing by the computer a group of power flow equations according to the plurality of first power flow equations, the plurality of second power flow equations, a voltage magnitude of a balance bus and a voltage phase of the balance bus; choosing by the computer a bus having a fastest voltage drop as a parameterization bus, and defining a parameterization variable according to a voltage magnitude of the parameterization bus and a load growth factor; defining by the computer an equality constraint equation according to the parameterization variable, and generating by the computer a collection of extended power flow equations according to the equality constraint equation and the group of power flow equations; solving by the computer the collection of extended power flow equations by a plurality of iterations to obtain a plurality of load summations; and generating by the computer a Power-Voltage (P-V) curve according to the plurality of load summations, wherein the first power flow equation is: wherein the second power flow equation is: where, P where, P