非线性励磁控制对发电机进相运行稳定性的改善

总结了非线性励磁控制对改善发电机进相运行稳定性的实验结果，验证了非线性控制理论中微分几何设计方法的正确性。在实验研究中，着重比较了比例－积分－微分控制器（ＰＩＤ）、电力系统镇定器（ＰＳＳ）、线性最优励磁控制器（ＬＯＥＣ）和非线性励磁控制器（ＮＥＣ）等四种不同的励磁控制方式对发电机进相运行的影响。实验结果表明，在改善发电机进相运行稳定性方面，非线性励磁控制较其它几种控制方式具有明显的优越性。在电网低谷进相运行中它是有较大潜力的技术措施。

Experimental study on phase lead stability of a generator for a nonlinear excitation control system

This paper summarizes the results of experimental study on phase lead stabilityof a generator for a nonlinear excitation control system, which verifies the validity of the design method based on differential geometry of nonlinear control theory. In the experimentalresearch, four different excitation control approaches are emphatically compared in their control effectiveness to phase lead stability of a generator, which are proportional-integral differential controller(PID), power system stabilizer(PSS), linear optimal excitation controller(LOEC) and nonlinear excitation controller (NEC). The experimental results indicate thatthe nonlinear excitation control approach has obvious advantages over the other three controlones, which will be a potential technical measure during phase lead operation of a power net.