中文摘要：

为比较磁饱和式可控电抗器（MSCR）和变压器式可控电抗器（CRT）的电压控制性能，根据电力系统电压控制原理，建立了可控电抗器电压控制系统传递函数框图，并采用工程设计方法，给出了比例积分控制器参数计算公式。建立了基于MATLAB／SimPowersystems的可控电抗器电压控制系统的仿真模型，并分别对由MSCR和CRT构成的电压控制系统进行了实例仿真与对比分析。其主要结果表明：在负荷发生突变后，分别由MSCR和CRT所构成的电压控制系统都能使线路稳态电压保持为额定电压不变；CRT电压控制系统动态性能优于MSCR电压控制系统；提出的可控电抗器比例积分电压控制方法能够满足系统电压控制的需要，而且易于工程实现。

英文摘要：

To compare the voltage control performances of a magnetic saturation controlled reactor （MSCR） and a controllable reactor of transformer type （CRT）, employing the theory of reactive power compensating of electrical power systems, we constructed transfer function block diagrams of the voltage control systems. Utilizing the engineering design method, we derived the formulae for calculating the parameters of proportional integral （PI） controller. Consequently, a voltage controlling system for controllable reactors was established in the MATLAB/ SimPower system, and by instance simulation, the voltage-controlling systems constructed respectively by a MSCR and a CRT were comparatively analyzed. Results are drawn from the analysis as follows： under load changes, both of the voltage control systems can keep the steady line voltage stable on the rated voltage; the dynamic performance of the CRT voltage controlling system is superior to that of the CRT voltage controlling system; and the presented PI control method for a controllable reactor meets the needs of voltage control in power systems while its implementation in projects is easy.