Exploitation Criteria for Installed Discharge at SHPP

Abstract

The water management organization, under the leadership of PC “Strezevo”, provides water for irrigation and process water for industrial enterprises, using water from reservoir Lake Strezevo. Water from the reservoir is distributed to consumers through energy use. Two small hydro power plants are installed, one SHPP Strezevo with three identical turbine units installed and second SHPP Exploitation Minimum, with one turbine. The technical parameters of the turbine units are different. In exploitation, all four turbine units are connected to one water supply system. This water supply system is characterized by the specificity that it should always deliver the required discharge to consumers, while managing the turbine units to provide maximum energy efficiency at the flow required, depending on the water level in the reservoir. The required operating conditions of the turbine units deviate from the standard turbine control procedure, which makes the optimization method specific. The optimization model for determining the parameters of exploitation of turbine units takes into account: water level in the accumulation, technical performance of individual turbine units (represented by the hill diagram), limitation of the minimum flow of turbine operation, limitation of turbine opening (openness of the wicket gate), as well as the limitation due to installed power. The optimization criterion is to provide the maximum opportunity for individual or joint operation of turbine units. The output part of the optimization is the setting of the operating mode for each turbine unit. For the time being, correlation calibration settings of the model have been made the base of exploitation period, and the next exploitation period for proving the model is yet to come.