蒸汽发生器水位双PI控制的改进研究  

Improved Double PI Control for Nuclear Steam Generator Water Level

作　　者：李凤宇[1] 陆古兵[1] 张龙飞[1] 刘东[2] 

机构地区：[1]海军工程大学船舶与动力学院 [2]海军91404部队装备部

出　　处：《原子能科学技术》2010年第B09期279-282,共4页Atomic Energy Science and Technology

摘　　要：蒸汽发生器(SG)水位的控制问题是压水堆核电站紧急停堆的1个重要原因,尤其在低功率情况下,缩胀效应致使水位控制较难。为了避开水位变化初期的假水位的影响,在控制过程中加入判别器来决定水位信号是否参与控制。采用遗传算法对控制器参数进行整定,采用的SG水位模型是简化的数学模型。对控制器中有无判别器的控制效果进行了对比。对比结果表明:加入判别器后,缩短了调节时间,降低了超调量。Malfunction of steam generator water level control is the main cause of unexpected shutdowns in nuclear power plants. Particularly at low powers, it is a di？cult task due to shrink and swell phenomena. In order to avoid the affect caused by spurious water level, a special discriminator was designed. Parameters of the controller with a simplified steam generator model were tuned offline by the genetic algorithm. Control effect with a discriminator was contrasted to that without a discriminator. The results show that the discriminator shortens control period and reduced overshoot.

关 键 词：蒸汽发生器 遗传算法 水位控制 

分 类 号：TL361[核科学技术—核技术及应用]