1, obtain the resistance R of the 4 km long line.
2. Calculate the power generated by the wind farm. P=20 million/(30*24)KW
3, calculate the line current. I=P/110KV
4, power loss. I*R
5, power loss. I*R*30*24*3600
Annual income of 300,000 kilowatts of wind energy
Wind and photovoltaic energy are new energy sources on which China is focusing on. the electricity network must fully absorb them and prioritize their use. Hydroelectricity also requires priority use of the electricity network during periods of flooding. This is a comprehensive consideration of a series of factors such as environmental protection and the reduction of carbon emissions by the State. The electricity network can therefore do nothing! Why is it called “junk electricity”? There are mainly two aspects.
First, photovoltaic andWind turbines have low installed capacity and are scattered, making it difficult to meet the peak load regulation needs of the power grid! To put it simply, when the weather is sunny and the wind is blowing, the insufficient thermal power will be supplemented. When short-term electricity demand increases rapidly, photovoltaic and wind power cannot meet it. On cloudy days and when there is no wind, the power plant is dead. In the event of a power outage, thermal energy is used! And the price of new electricity on the network is relatively high! This means that when the sun rises, the heat load is reduced and when the sun sets, the heat load increases. For the power grid, constant adjustments are required, which is not conducive to the safety and economical operation of the power grid. Second, wind and photovoltaic energyïque are not stable enough, resulting in harmonics being transmitted to the power grid system, which will increase power losses and affect motor efficiency, which will affect high-precision manufacturing! These two reasons should be the reason why photovoltaic and wind energy are called "garbage energy".
Both are new energy production, which are currently encouraged and vigorously developed by the state, and there are huge state subsidies. , the grid settlement price for thermal power is about 0.3 yuan per kilowatt hour, and the price of wind and photovoltaic power generation ranges from 0.3 to 0.8 yuan.
Both types of electricity generation had a fatal flaw at the time, namely their intermittency. Solar power produced electricity during the day and could not produce electricity at night. Wind energy forwould produce electricity when there was wind. but could not produce electricity when there was no wind. These two types of power generation are actually not well received by the power grid, but due to state support for new energy and requirements for energy saving and emission reduction, the electricity network company must accept them unconditionally.
There are more and more of these two types of electricity production, which lead to instability in the electricity network. At present, we mainly rely on thermal energy peak shaving, pumped energy storage, wind energy heating and wind energy heating. building energy storage power plants to solve intermittent problems. At the same time, forecasts for wind and solar power are becoming increasinglyaccurate, which also reduces pressure on electricity grid regulation.
168,000. According to the official website of the people's government of Chengbu County, Hunan Province, in 2022, Chengbu Wind Power will produce 250 million kilowatt hours of electricity and achieve a figure of business of 140 million yuan. With 300,000 kilowatts of wind power, the annual income. is 168,000 yuan. The calculation formula is 1.4 divided by 2.5 equals 0.56 and 0.56 times 30 equals 16.8.