摘  要：换热站作为供热网路与热用户之间的连接场所，其供热品质对热网工况的改善和供热质量的好坏起着重要作用。换热站变频调速控制系统主要由PLC控制器、变频器和PID控制器及调节阀组成，本文主要针对换热站循环水泵和补水泵变频控制进行设计。

关键词：循环水泵；补水泵；变频调速；PLC
Abstract: Heat exchanger station as the connection between the heat supply network and heat users, the heating quality and heating on the improvement of the working condition of the heat-supply quality plays an important role. Heat exchanger station frequency control of motor speed control system is mainly composed o