Here we will study the combination of Hydro and Thermal plants. Hydro Thermal plant supply excess hydro-power during periods of high water run-off to other states and can receive thermal power during periods of low water runoff from other states. At low hydro potential and large coal reserves this makes the thermal stations to operate at high load factors. Hydro-Thermal Scheduling. There is a need for the development of hydro-power plants due to the following reasons. Due to the increment of power in the load demand from all sides such as industrial, agricultural, commercial, and domestic. Due to the high cost of fuel coal. Due to the limited range of fuel. Comparision between thermal and Hydel power plants Thermal Power Plant Hydel Power Plant It is non-renewable source It is renewable source of of energy energy Initial cost is low Initial cost is high But operational cost is high But operational cost is low It produces air pollution It is a clean source of Energy Requires several hours to make the Can be started easily and can boilers, super heater ready to take assigned a load in very short time the load. Slow in response. Suitable to operate as base load Sutible to operate as peak load plants. Optimal scheduling of hydrothermal System. Long range problem Hydrothermal scheduling. Short Term range problem Hydrothermal scheduling. Fixed head hydro thermal scheduling 2. Constant hydro-generation method: a scheduled amount of water at a constant head is used such that the hydro- power generation is kept constant throughout the operating period. Maximum hydro-efficiency method: during peak load periods, the hydropower plants are operated at their maximum efficiency; during off-peak load periods they operate at an efficiency nearer to their maximum—efficiency 4. Learn more about Scribd Membership Home. Read free for days Sign In. Much more than documents. Discover everything Scribd has to offer, including books and audiobooks from major publishers. Start Free Trial Cancel anytime. Uploaded by harshini. Document Information click to expand document information Date uploaded Aug 14, Original Title unit 1 HydroThermal. Did you find this document useful? Is this content inappropriate? Report this Document. Flag for Inappropriate Content. Download now. Save Save unit 1 HydroThermal.

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