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Research of Hydraulic Turbine Governor Based on PLC

Author: QuQuanLei
Tutor: XiongZhiYao
School: Hunan University
Course: Electrical Engineering
Keywords: Turbine governor Programmable regulator Frequency Measurement PID regulator Servo motor
CLC: TV734.4
Type: Master's thesis
Year: 2009
Downloads: 340
Quote: 1
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Abstract


The turbine governor is the important equipment in the turbine control system , get a wide range of promotion and application of PLC in this field in recent years . This article discusses the development history , status quo and development trend of the turbine governor based on the structure of the turbine governor system , control algorithms , technical issues such as the application of the curve of the the turbine governor Digital Associated analysis and research . By Japan's Mitsubishi FX 2N -MT series PLC to achieve the design requirements of the turbine governor , and has good static and dynamic characteristics . On the basis of the results of previous studies , this paper focuses on the the turbine governor software and hardware implementations . The turbine governor not only to achieve control of the guide vanes , and the use of digital Associated curve to achieve control of the paddle , and greatly improve the control performance of the machine . New frequency measurement does not require additional outside of the PLC processor , you can achieve the accurate measurement of frequency , and improve the the measuring frequency part of the anti-jamming performance , reduce machine cost . Panasonic servo motor and servo drive electromechanical conversion device , replacing the stepper motor and drive , not only to overcome the instability of the original device , but also improves the stability of the control precision and the links . Classical PID algorithm to achieve the entire core control strategy is proven , the control method can achieve the design purpose , has good static and dynamic characteristics . The governor of the design using mainly FX 2N -MT series PLC internal resources , additional small amount of external expansion module and its external circuit , to achieve the design features of the Micro governor , has a simple structure , volume small, the advantage of high reliability . It has a programming convenience , scalability , high cost , and can be widely used in small and medium-sized turbine generator set speed control , for the design and reconstruction of the small and medium - sized hydropower turbine governor , has a certain reference value .

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CLC: > Industrial Technology > Hydraulic Engineering > Hydropower utilization of hydropower project > Hydropower station construction and equipment > Mechanical and Electrical Equipment > Control devices, speed control agencies
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