Characteristic study,its identification and self-tuned approach to control hydro-power plants |
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Authors: | A. S. Raghuvanshi Jesus Fraile-Ardanuy S. P. Singh |
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Affiliation: | 1. Department of Electronics and Communication Engineering, Indian Institute of Information Technology, Allahabad 211004, India;2. Dpto., de Tecnologías Especiales Aplicadas a la Telecomunicación (TEAT), UPM, 28040 Madrid, Spain;3. Department of Electrical Engineering, Indian Institute of Technology, Roorkee, India |
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Abstract: | The water time constant and mechanical time constant greatly influences the power and speed oscillations of hydro-turbine-generator unit. This paper discusses the turbine power transients in response to different nature and changes in the gate position. The work presented here analyses the characteristics of hydraulic system with an emphasis on changes in the above time constants. The simulation study is based on mathematical first-, second-, third- and fourth-order transfer function models. The study is further extended to identify discrete time-domain models and their characteristic representation without noise and with noise content of 10 & 20 dB signal-to-noise ratio (SNR). The use of self-tuned control approach in minimising the speed deviation under plant parameter changes and disturbances is also discussed. |
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Keywords: | hydro plant dynamics identification self-tuned control simulation model reduction |
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