Abstract
A non-linear model based feed forward flatness control approach to speed governor systems of hydropower plants
Highlights
The balance between the generation and the consumption of the power is a critical issue in a power system and HEPPs, similar to other generation plants, which has an important role in providing the active and reactive power balance by participating to load frequency control of the power system
The gas power plants give the best responses to the deviation in the load demands and meet the peak demands, due to not being prevalent in the system cannot participate to the load frequency control of the system
The conventional PI controller is compared with a two degree controller structure which consists of a flatness-based feed forward part and a PI feedback loop
Summary
The balance between the generation and the consumption of the power is a critical issue in a power system and HEPPs, similar to other generation plants, which has an important role in providing the active and reactive power balance by participating to load frequency control of the power system. The nuclear plants are loaded at their base levels to get the maximum efficiency and are not included in the load frequency control Because of these reasons the automatic generation control (AGC), which controls the power transmissions between the areas of the interconnected system, is implemented over thermal and hydro power plants. To determine in which cases the surge tank should be included to the model, simulations for the transient conditions are implemented Beside these investigations a hydroelectric power plant with more than one unit sharing a common penstock is modelled and the effects of the turbines to each other are investigated. Flatness based control of the trajectory of a voltage source converter is compared with the traditional PI feedback controller in study [8] By this approach the non-linear model is directly implemented instead of a linear approximation.
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