Thermal power generation has the advantages of low cost, mature technology, disadvantages of polluting the environment, advantages of consuming primary energy, advantages of nuclear power generation without consuming primary energy, disadvantages of nuclear radiation caused by nuclear leakage, higher cost than thermal power, advantages of green and environmental protection, disadvantages of saving primary energy, disadvantages of water source, and higher cost than thermal power generation; The basic principle of hydropower generation is to use the water level drop to cooperate with the hydraulic turbine generator to generate electricity, that is, to use the water level energy to turn into the mechanical energy of the hydraulic turbine, and then use the mechanical energy to drive the generator, so that the electric power scientists can obtain the natural conditions of this water level drop, effectively use the hydraulic engineering and mechanical physics, and carefully match to achieve the highest.
Disadvantages: large pollution, dim prospects for sustainable development, large energy consumption, low efficiency, long history of hydraulic advantages, low late cost, pollution-free, renewable water energy, large total hydropower reserves, large defects, large investment in fixed assets, and high requirements for geographical environment. For example, southwest China is extremely rich in water resources, but the natural environment is bad; 1. The hydraulic power generation system uses the water flow with potential energy at high places such as rivers and lakes to reach low places, converts the potential energy contained therein into the kinetic energy of the hydraulic turbine, and then uses the hydraulic turbine as the prime mover to drive the generator to generate electricity.
Advantages: 1. High efficiency of hydropower generation, low power generation cost, fast unit startup, easy regulation. Due to the use of natural water flow, hydropower generation is often an important part of comprehensive utilization of water resources. It forms a comprehensive utilization system of water resources with shipping, aquaculture, irrigation, flood control and tourism. 2. Hydropower generation; 1 Damless water intake When the water level and flow of the river channel in the dry season can meet the requirements of irrigation or urban water supply, appropriate locations can be selected on the bank, water intake structures can be set up, and water can be diverted or supplied by gravity. This kind of water intake is called damless water intake damless water intake project, which has simple characteristics, but it does not regulate the river water level and flow
Characteristics of hydropower (what are the characteristics of hydropower)
The power source is mainly generated by generators. At present, the power generation methods in the world mainly include thermal power generation, hydroelectric power generation and nuclear power thermal power generation. The advantages are low early construction cost, stable power generation, and even production throughout the year. Therefore, it plays a major role in the power production of all countries in the world, accounting for more than 70% of the total power generation.
Characteristics of hydropower (what are the characteristics of hydropower)
Features of hydropower include
Therefore, the cost of hydropower generation is relatively low, and it can provide cheap electricity. 3. The water turbine generator unit, which is the main power equipment for hydropower generation, is not only efficient but also flexible in startup operation. It can be quickly started from a static state and put into operation in a few minutes to complete the task of increasing or decreasing load in a few seconds, to adapt to the power load.
1. According to the nature of water source, it can be divided into conventional hydropower stations, that is, generating power from natural rivers and lakes.
2. According to the means of development head of hydropower stations, it can be divided into three basic types: dam type hydropower stations, diversion type hydropower stations and hybrid hydropower stations.
3. According to the size of the utilization head of hydropower stations, it can be divided into high head of 70 meters.
The advantages of thermal power generation are mature technology, low cost, and low requirements for geographical environment. The disadvantages are large pollution, sustainable development, gloomy prospects, large energy consumption, and low efficiency. The advantages of hydropower generation are long history, low cost in the later period, pollution-free, renewable water energy, and large amount of water energy reserves. The disadvantages are large investment in fixed assets, and large investment in geography.
1. The principle of hydraulic power generation: hydraulic power generation is to use the water flow with potential energy at high places such as rivers and lakes to reach low places, convert the potential energy contained therein into the kinetic energy of the hydraulic turbine, and then use the hydraulic turbine as the prime mover to drive the generator to generate electrical energy. Use water power to drive the hydraulic turbine to rotate, and convert the water energy into mechanical energy.
First, from the economic perspective, hydropower is the most direct benefit, which can also derive many indirect economic benefits. For example, the economic benefits of tourism and entertainment, aquaculture, shipping or water supply can be quantified. In addition, it also includes agricultural irrigation, regulation of power grids and other unquantifiable values.
Principle and characteristics of hydropower generation
1. If the wind speed reaches 15 meters per second, the power generation can be increased to 60000 kilowatts. You see, how much cheap power can the waves provide for lighthouses, navigation aids and civil lighting? In addition to maintaining a certain drop, hydropower and power plants must also have a considerable flow. Therefore, in the upstream of each hydropower station.
Characteristics of hydropower (what are the characteristics of hydropower)
2. The basic principle of hydropower is to use the water level drop to cooperate with the hydro generator to generate electricity, that is, to use the potential energy of water to turn into the mechanical energy of the water wheel, and then use the mechanical energy to drive the generator, so that the electric power scientists can obtain the natural conditions of this water level drop, effectively use the fluid engineering and mechanical physics, etc.
3. 1. Use the high water volume to hold the potential energy to convert kinetic energy to drive the prime mover
2. Use the guiding waterway and penstock to convert the potential energy of water volume into kinetic energy
3. The favorable hydraulic location is far away from the load center, long from the electricity, and high transmission cost
4. The hydraulic power generation efficiency is up to more than 90%
Post time: Dec-16-2022
