電力系統の需給制御の性能評価と改良

—その2：過制御の抑制による平常時特性の改善—

抄録

This paper proposes a method to improve the performance of the automatic generation control (AGC) in a steady state of a power system. As the penetration of solar and wind power generation increases, the frequency control of a power system faces a challenge because the increase causes more fluctuations and forecasting errors in generation output to be dealt with the control. The improvement of AGC systems is thus indispensable in the future power systems. The authors have shown that excessive control in AGC deteriorates its performance through simulation studies on the standard AGC model of IEE, Japan (AGC30). This paper proposes methods to improve the performance of the control by adding phase-lead compensation in load frequency control as well as modifying the target frequency of economic load dispatching control. The effectiveness of the methods is examined through simulation on AGC30. The studies show that the proposed methods improve the performance by mitigating the excessive control observed in the original AGC.