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首页> 外文期刊>American journal of applied sciences >Comparison of UPFC-Based Stabilizer and PSS Performances on Damping of Power System Oscillations | Science Publications
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Comparison of UPFC-Based Stabilizer and PSS Performances on Damping of Power System Oscillations | Science Publications

机译：基于UPFC的稳压器和PSS对电力系统振荡阻尼的性能比较科学出版物

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> This paper establishes the linearized Phillips-Heffron model of a power system equipped with UPFC and demonstrates the application of the model in analyzing the damping effect of the UPFC and designing UPFC based stabilizer to improve power system oscillation stability. A comprehensive approach to the design of UPFC based stabilizer (power flow control, DC-voltage regulator and damping controller) is presented. In this case, the multi-machine power system with UPFC is studied and an example of power system is presented. It is shown that the DC voltage contributes negative damping to power system oscillations, which is confirmed by both eigenvalue computation and nonlinear simulation. To counterattack the negative damping effect due to the DC voltage regulator, UPFC based stabilizer is designed and its effectiveness is demonstrated by both eigenvalue computation and nonlinear simulation. Then the effects of UPFC and PSS on power systems are compared. Simulation results show that the performance of UPFC based stabilizer on damping of power system is better than PSS.
机译： >本文建立了装有UPFC的电力系统的线性Phillips-Heffron模型，并演示了该模型在分析UPFC的阻尼效果和设计基于UPFC的稳定器以提高电力系统振荡稳定性方面的应用。提出了一种基于UPFC的稳定器设计的综合方法（功率流控制，直流电压调节器和阻尼控制器）。在这种情况下，研究了具有UPFC的多机电源系统，并给出了一个电源系统示例。结果表明，直流电压对电力系统的振荡产生负阻尼，这已通过特征值计算和非线性仿真得到了证实。为了反击直流稳压器产生的负阻尼效应，设计了基于UPFC的稳定器，并通过特征值计算和非线性仿真证明了其有效性。然后比较了UPFC和PSS对电力系统的影响。仿真结果表明，基于UPFC的稳定器在电力系统阻尼方面的性能优于PSS。

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