| 摘要 |
An out of phase detecting apparatus according to the present invention includes a measurement unit for measuring an effective power and a current effective value at a tie point of power systems at a predetermined cycle, a power trend detection unit for detecting a trend of the effective powers measured in sequence by the measurement unit, a current trend detection unit for detecting a trend of the current effective values measured in sequence by the measurement unit, a power level determination unit for determining a relationship in strength between each of the measured powers and a steady effective power P0 obtained when the power systems are in a steady state, and an out of phase detection unit for detecting whether an out of phase condition occurs in the power systems based on the trend of the measured effective powers, the trend of the measured current effective values, and the relationship in strength between the steady effective power P0 and each effective power.
|
