作　　者： ; ; ; ;

机构地区： 广西大学电气工程学院

出　　处： 《中国电机工程学报》 2012年第22期79-85,共7页

摘　　要： 为解决互联水电系统负荷频率控制（load frequencycontrol,LFC）问题,及保持互联电网系统频率、联络线功率及区域控制误差（area control error,ACE）的稳定,根据闭环系统谐振峰值与系统响应最大峰值之间的关系,构建一个与系统参数及控制器参数都相关的优化问题,通过该问题的求解获得控制器参数与系统参数之间的数学关系,针对水轮发电系统非最小相位特性,通过串加比例–微分（proportional-derivative,PD）控制方式降低系统阶次,设计尼科尔斯（Nichols）曲线的比例–积分–微分（proportional-integral-derivative,PID）控制器。基于模型参数扰动和负荷干扰的仿真结果表明：尼科尔斯PID控制器能快速调整系统频率偏差、联络线功率偏差及ACE为0,具有良好的鲁棒性能和抗负荷干扰性能,系统过渡过程性能明显优于传统PID调节器结果。 In order to effectively manage the problem of load frequency control （LFC）, preserve stability of frequency, tie-line power and area control error （ACE） for inter-connection hydro power system, the optimal problem between system parameters and controller parameters was constructed in this paper according to the relation between the maximum peak resonance and the maximum peak overshoot. The mathematic expression between the two kinds of parameter was obtained by deduced the optimal problem. Aimed at the non-minimum phase character of hydro generator system, in order to reduce system order, the Nichols proportional-integral-derivative （PID） controller was designed by augmenting a proportional-derivative （PD） controller in series. The simulation results of model parameter perturbation and power system load disturbance demonstrate that the designed Nichols PID controller can swiftly settle the system frequency error, the tie-line power error and ACE to zero and have strong robust performance and anti-interference for load disturbances. System performance indexes of transient process are evidently better than those of traditional PID regulator.

关 键 词： 水轮发电系统 负荷频率控制 尼科尔斯曲线 比例 积分 微分控制器

分 类 号： [TM76]

领　　域： [电气工程]