| 摘要 |
PROBLEM TO BE SOLVED: To obtain a practical system model optimal to power flow calculation by approximating a reactive power Q in the constant output control of an effective power P, i.e., the output from a power supply model where induction generators are linked with a system as distributed power supplies. SOLUTION: Assuming the primary effective power P1 is constant in constant output control of an induction machine type distributed power supply model, primary reactive power Q1 outputted from the induction machine type distributed power supply model is approximated by the product of a coefficient a2 and the square term of a voltage v at an link node, the product of a coefficient a1 and the linear term of the voltage v, and the product of a coefficient a0 and the 0 power term of the voltage v. According to the method, power flow calculation for determining voltage/current distribution of a system can be carried out at a higher speed with higher efficiency when distributed power supplies are introduced in a power flow calculation method for radial system where a distribution system model is built in the forward calculation. |
