How to calculate the power generated by hydroelectric plants

Introduction How to calculate the electricity production of a hydroelectric plant? The electricity production of a hydroelectric plant = 9.8*QHT/n (KJ). In the formula: Q electricity production rate, m^3/s; T electricity production time, s

How to calculate the power generated by hydroelectric plants

Energy production of a hydroelectric plant = 9.8 * QHT/n (KJ) where: energy production rate Q, m^3/s; power generation height H, m; energy production time T, s; The actual calculation is much more complicated than the above, because Q and H are not completely constant, the starting state of the hydropower station generator set also changes, and the power generation efficiency is not not fixed. This requires detailed data on the operation of. the power plant to be calculated.

What are the electricity production and water consumption parameters of the 300 MW unit?

The electricity and water consumption in the Production and operating indicators are calculated based on the unit used. According to the request for relevant public information, water consumption is equal to the water consumption quota multiplied by the actual number of water-using units(also often called: quota multiplied by quantity). Electricity consumption rate: refers to the ratio between the overall electricity consumption of the factory and the electricity production during the statistical period, that is, the overall electricity consumption rate of the factory plant is equal to (generated power divided by overall plant power consumption) multiplied by 100%. The overall electricity consumption of a plant refers to the difference between electricity production and grid energy during the statistical period, reflecting the amount of energy that is not supplied to the grid.

0.6 kg/kWh

The power generation water consumption rate of the unit parameter of 300,000 kilowatts should refer to the rate of water consumption of the unit 300,000 kilowatts of the unit. thermal power plant, excluding hydraulic ash evacuation, cooling water from eqauxiliary equipment, coal yard water, domestic water, etc., but refers to the normal water replenishment of the unit's circulation cooling system and the boiler water replenishment.

Therefore, according to the requirements of 14.1.4 of “Technical Regulation DL 5000-2000 for the design of thermal power plants”, the rate of water consumption for electricity production should not exceed design regulations. However, in the actual production process, based on various production management factors, the water consumption rate for power generation generally evolves towards the first-rate thermal power plant management indicators. According to relevant reports, the water consumption rate of the best water-saving generator per unit of power generation can reach less than 3.6 kg/kWh. Of course, this is related to the unit type.

Detailed Information

Shanghai Heavy Machinery Factory Co., Ltd. and others are responsible for high and medium pressure cylinder trial production, forming fusion, casting, heat treatment, welding repair, etc. Complete production process, the product was used in a 600MW steam turbine.

After many failures in the development of high-voltage rotors, we finally solved the problem of smelting high-alloy low-silicon and aluminum steels, developed under-slag remelting technology Nitrogen protected electric and successfully tested- produces one high voltage rotor, two rotors for the product in production. Austenitic stainless steel pipe is developed by the special steel branch of Baoshan Iron and Steel Co., Ltd. and participated by Shanghai Boiler Works Co., Ltd. The metallurgical quality of the national pipe is equivalent to the material levelx imported, and the durable strength can reach 99 MPa at a high temperature of 650°C.

High temperature and high strength materials for blades and bolts developed by Shanghai Steam Turbine Co., Ltd. and others have been industrialized, with an annual production of around 600 tons. Generators installed with this component in power plants such as Huangdao in Shandong and Suxian in Anhui have been put into normal operation. The high strength threaded screw material for turbine generators developed by Shanghai Xinmin Heavy Forging Co., Ltd. and others has been successfully used in 1,000 MW generators.

According to experts' estimates, once the project is completed, the cost of ultra-supercritical units could be reduced by half. The outline of China's "eleventh five-year plan" proposes "to optimize the development of thermal energy by emphasizingnities, and build large-scale, ultra-supercritical power plants and large-scale air-cooled power plants. The “Medium and Long-Term National Science and Technology Development Plan” clearly lists energy as a priority development area and clearly proposes technologies such as high-parameter ultra-supercritical units under the theme “Clean and Efficient Development and Utilization ". Coal, Liquefaction and Polygeneration".

Baidu Encyclopedia-Ultra-supercritical unit

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