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首页> 外文期刊>Electric power systems research >Semi-physical piecewise affine representation for governors in hydropower system generation
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Semi-physical piecewise affine representation for governors in hydropower system generation

机译：水电系统调节器的半物理分段仿射表示

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This paper presents a nonlinear model for a hydraulic amplifier, a component of the governor in the speed control loop of hydroelectric power plants. The amplifier transforms the electrical signal of the controller into mechanical movement of the turbine components, including the switching characteristics. This model is used to propose, on the one hand, a Piecewise Affine (PWA) representation for the hydraulic amplifier, and, on the other hand, a methodology for estimating the model parameters using field measurements, which facilitates its practical implementation. This representation is referred to as semi-physical because the model parameters are closely related with the physical" construction of the hydraulic amplifier components. Among the advantages of this PWA representation are the appropriate structuring for use in system identification methods, for estimating its parameters, and the existence of advanced control techniques that use this structure in controller design, thereby improving the load frequency control performance. The paper concludes with a description of the results, including the parameters that were estimated by using the hydraulic amplifier model with PWA structure. (C) 2016 Elsevier B.V. All rights reserved.
机译：本文提出了液压放大器的非线性模型，液压放大器是水力发电厂速度控制回路中调速器的组成部分。放大器将控制器的电信号转换为涡轮部件的机械运动，包括开关特性。该模型一方面用于为液压放大器提出分段仿射（PWA）表示，另一方面用于使用现场测量来估计模型参数的方法，这有助于其实际实施。由于模型参数与液压放大器组件的物理“结构”密切相关，因此该表示法称为“半物理的”表示法。这种PWA表示法的优点包括用于系统识别方法的适当结构，用于估计其参数，以及在控制器设计中使用这种结构的先进控制技术的存在，从而提高了负载频率控制性能。本文最后对结果进行了描述，包括通过使用具有PWA结构的液压放大器模型估算的参数。（ C）2016 Elsevier BV保留所有权利。

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