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直流输电换流阀外冷系统中风机的PLC控制研究 被引量:3
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作者 易映萍 黄松 +1 位作者 景兆杰 王晓丽 《信息技术》 2012年第11期1-4,8,共5页
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... 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。 展开更多
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
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On Advanced Control Methods toward Power Capture and Load Mitigation in Wind Turbines 被引量:2
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作者 Yuan Yuan Jiong Tang 《Engineering》 SCIE EI 2017年第4期494-503,共10页
This article provides a survey of recently emerged methods for wind turbine control. Multivariate control approaches to the optimization of power capture and the reduction of loads in components under time-varying tur... This article provides a survey of recently emerged methods for wind turbine control. Multivariate control approaches to the optimization of power capture and the reduction of loads in components under time-varying turbulent wind fields have been under extensive investigation in recent years. We divide the related research activities into three categories: modeling and dynamics of wind turbines, active control of wind turbines, and passive control of wind turbines. Regarding turbine dynamics, we discuss the physical fundamentals and present the aeroelastic analysis tools. Regarding active control, we review pitch control, torque control, and yaw control strategies encompassing mathematical formulations as well as their applications toward different objectives. Our survey mostly focuses on blade pitch control, which is considered one of the key elements in facilitating load reduction while maintaining power capture performance. Regarding passive control, we review techniques such as tuned mass dampers, smart rotors, and microtabs. Possible future directions are suggested. 展开更多
关键词 Wind turbine Control approach Power optimization Load mitigation
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