LIANG Hao,XIE Huan,WANG Cong,et al.Characteristic Analysis of Power-type Power System Stabilizer with Improved Rotational Speed Under Condition of Deep Peak Regulation and Leading Phase[J].Automation of Electric Power Systems,2022,46(22):192-199.
LIANG Hao,XIE Huan,WANG Cong,et al.Characteristic Analysis of Power-type Power System Stabilizer with Improved Rotational Speed Under Condition of Deep Peak Regulation and Leading Phase[J].Automation of Electric Power Systems,2022,46(22):192-199. DOI: 10.7500/AEPS20220127001.
Characteristic Analysis of Power-type Power System Stabilizer with Improved Rotational Speed Under Condition of Deep Peak Regulation and Leading Phase
The problem of low-frequency power oscillation is caused by the large rotational speed calculation error of the power-type power system stabilizer (PSS) with improved rotational speed under the condition of deep peak regulation and leading phase of the generator. In this paper
the cause that PSS produces negative damping is analyzed based on the case of field power oscillation. Based on the mainstream method for calculating rotational speed by electrical quantities of excitation device
the sensitivity analysis of reactance parameters in rotational speed calculation is carried out by solving the derivative of rotational speed to active and reactive power. The influence of reactance parameters on rotational speed calculation error under different operation conditions is studied. The accuracy of rotational speed calculation is related to the reactance parameters and the operation conditions of the generator unit. When the reactance parameter setting value is too large
the accuracy of rotational speed calculation becomes worse with the reduction of the active power of the generator unit and the advance of reactive power. Simulation test and field test verify the correctness of the theoretical analysis
and provide guidance and suggestions on the range of reactance parameters used for the rotational speed calculation and the precautions for PSS test.
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