摘要
高压直流输电系统中换流阀的进阀温度是阀外冷控制系统需要控制的最关键的参数,而由变频器驱动的风机是调节冷却水进阀温度的主要设备。文中系统是基于换流站运行的阀冷系统提出的优化控制方法,根据进阀温度实时值和进阀温度给定值采用PID调节方式进行控制,通过调节变频器的输出频率,进而控制风机转速,最终达到控制冷却水进阀温度的目的。优化的风机控制方法有效减少了风机频繁启停现象,延长了风机使用寿命,并且节能效果明显。主要介绍了由PLC控制的风机变频器的控制原理及风机的优化控制方法,并通过某换流站现场试验运行数据得以验证。
The inlet valve temperature of the valve is the most important parameter in the external water cooling control system in the HVDC （High Voltage Direct Current）power transmission system. And the motor which is drived by the transducer is the main equipment to regulate inlet valve temperature of the cooling water. This system controls the speed of the motor by regulating the output frequency of the transducer according to the real time values and the set values to control the inlet valve values with the optimized blower control method. This method reduced the phenomenon of blower frequent starts and stops effectively, extends the life of the blowers with obvious effect of energy saving. This paper presents a design of control principle of the blower and the method of PID control through the debugging in the working field to get the proper parameter.
出处
《信息技术》
2012年第11期1-4,8,共5页
Information Technology
基金
国家高技术研究发展计划(863计划)(2012AA050206)
关键词
进阀温度
变频器
优化风机控制
节能控制
PID温度调节
inlet valve temperature
transducer
optimized blower control
energy saving control
PID temperature control
