Frequency Bias Coefficient Allocation of Multi-Area AGC System Considering Frequency Regulation Capability and Responsibility

As the proportion of new energy gradually increases, frequency control of power system faces greater challenges. The frequency bias coefficient, often denoted as B, is an important parameter of AGC (automatic generation control) system and greatly affects the control performance. Traditional allocation method of B aims at fair division of frequency regulation responsibility among control areas, but not frequency control performance of the system. An allocation method of B considering both the capability and the responsibility of frequency regulation of control areas is proposed. The method can make the control area with strong regulation capability and low regulation responsibility play a greater role and improves the frequency control performance of the whole system. The validity of the method is verified by long-time simulation results.