Design of integrated synergetic controller for the excitation and governing system of hydraulic generator unit

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• 作者：Wenlong Zhu^a ; ^{z.huw@hotmail.com} ; Yang Zheng^b ; Jisheng Dai^a ; Jianzhong Zhou^b
• 关键词：Hydraulic generator unit ; Hydraulic generator governing system ; Voltage regulation ; Excitation control ; Synergetic control
• 刊名：Engineering Applications of Artificial Intelligence
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：58
• 期：Complete
• 页码：79-87
• 全文大小：1239 K
• 卷排序：58

文摘

Synergetic control theory is introduced into hydraulic generator excitation system (HGES) and hydraulic generator governing system (HGRS) in this paper. Synergetic excitation controller (SEC), synergetic governing controller (SGC) of HGU have been designed. In order to enhance the terminal voltage control and mechanical power tracking performances simultaneously, the integrated synergetic controller (ISC) is also proposed. ISC implements synergetic control of terminal voltage, rotor speed, mechanical input power and guide vane opening. Namely, the ISC is considering both of the excitation system and governing system of hydraulic generator unit (HGU), which can provide control function instead of SEC and SGC. In addition, the control rules of the aforementioned three controllers are deduced from the nonlinear mathematical analytic model of hydroelectric generator unit. At the end of this paper, comparative case studies between the proposed SGC, SEC, ISC and classic PID controller are presented. The results show that the proposed ISC improves the nonlinear HGU system performance with a more accurate precision and shorter settling time in different operating conditions.