Many people think that annual hours of use = annual electricity production/installed capacity. The formula is correct, but it is not rigorous and it is easy to calculate that the usage hours are too small.
The precise method is: the number of operating hours calculated by dividing the electricity production by the capacity of the electricity generation equipment during the reference period. There is another indicator with the same concept: equipment utilization, which is the ratio between the number of hours of use of electricity generation equipment during the reference period and the number of calendar hours during this period. It should be noted here that the reporting period is used. When using these two indicators, one must pay attention to the timing of the reporting period.
For example: If a 3 MW wind turbine is commissioned le January 1 and has a cumulative electricity production of 6,000 kWh at the end of the year, and that another 2 MW wind turbine is commissioned on July 1 and has a cumulative electricity production of 3,000 kWh by the end of the year, then they will. The usage hours are 2,000 hours and 1,500 hours, respectively, and the utilization rates are 2,000/8,760 and 1,500/4,416, respectively, or 22.8% and 34.0%. It is obvious that the utilization degree of the second wind turbine is higher. (8760 and 4416 are respectively the number of hours of the whole year and the second half of the year, 8760=24×365, 4416=24×184)
If converted to a year , the number of hours usage hours are 2000 and 3000 hours respectively. It can also be seen that the second fan is used to a greater degree. Considering two wind turbines as a single wind farm, the entire wind farm can produce 12,000 kWh of electricity throughoutof the year and the installed capacity is 5 MW. The annual operating hours of the wind farm are 2,400 hours. If you don't pay attention to the reporting period and add it up directly, the electricity production is only 9,000 hours. If you divide it directly, you will get an incorrect result of 1800 hours. For renewable energy power plants such as wind farms and photovoltaic plants, many wind turbines or photovoltaic panels are often connected to the grid in batches to produce electricity. When calculating the number of hours of use, pay attention to the reporting period of each batch.
The concepts of hours of use and utilization rate do not only apply to power generation equipment. Whether it is production or life objects, there are problems of usage hours and utilization rate. We can useUse this method to calculate usage hours and utilization rates for various equipment, such as televisions, microwave ovens, washing machines, etc. at home. It's best to buy fewer things that won't be used several times a year and rent them when you use them. However, you should buy items that are good quality and frequently used.
How much does a 2000W solar panel + 2000W wind power generation + power supply equipment cost? How many kilowatt hours of electricity can be produced each day?
When building a wind farm, weather, social and natural conditions should first be taken into account.
1. Weather conditions?
1.1. The quality of wind energy must be high. The primary condition for a wind farm site must be abundant resources en wind energy. The annual average wind speed is more than 5 m/s, the effective wind hours at a height of 30 m are more than 6,000 hours, and the effective wind power density is more than 240 W/m^2.
In fact, the factors that affect the quality of wind power include the average annual wind speed, average wind power density, wind frequency distribution, available hours of effective wind speed, stability of wind direction, etc. ?
1.2. The prevailing wind direction at the wind farm site is stable. Stable wind direction can not only increase the utilization of wind energy, but also extend the lifespan of wind turbines. ?
1.3. The degree of turbulence in wind farms must be low. The wind is random and affected by the roughness of the site surface and nearby obstacles. The formation of turbulence in the field of vent is usually caused by a wind channel that is too rough or by sudden changes in wind speed and direction caused by obstacles. This will not only affect the efficiency of the wind turbine, but also cause vibration and uneven loading of the wind turbine, shorten the life of the wind turbine, and in severe cases cause accidents in which the blades become damaged. will fly away. ?
1.4. There should be fewer natural disasters at wind energy production sites. Strong winds, hail, thunderstorms, earthquakes, etc. will affect all wind turbines. ?
2. Social and natural conditions?
2.1. The terrain of the wind site must be relatively flat and the geological conditions must be good to facilitate civil construction. ?
2.2. Convenient transportation. It is necessary to determine whether the supply of equipment and the transport of the main construction materials of the parkproposed wind turbines are practical. Is it suitable for building and transporting large cranes and flatbed trucks? ?
2.3. The wind farm should be as close as possible to the grid access point. For example: near existing 10 KV and 66 KV substations and lines to reduce power loss and delivery project costs. Occupy as little cultivated land as possible to reduce ecological damage. ?
2.4. Surrounding environment. The construction of wind farms generally affects the normal life and migration of birds and birds. In order to protect the ecology, the site should try to avoid bird flight routes, migratory birds and animal habitats, etc., and stay away from nature reserves. military installations and densely populated areas, etc.
There is no 2000W single-chip solar panel. It seems that the 2kW wind turbine needs to add two things because the equipment used dyears the two are different. The solar panel needs an inverter and the wind turbine needs. a transformer. Daily electricity production should be calculated based on different lighting and wind conditions in your area. I can only say that if the electricity is at full charge, it can generate 4 degrees per hour per day.