The simulation demonstrates that even though K value is same, the power grid impedance angle and wind farm power factor may also affect the voltage variation which is caused by wind farm.

指出在K值相同时，风电场引起的电压变化还与电网阻抗角和风电场功率因数有关。

youdao

Energy to power machinery, both on the farm and in the storage and processing facilities, adds to the energy total, which currently represents about 3.1% of annual global energy consumption.

无论是农场，还是进行储存和处理的设施，其用于驱动机器的能源都增加了能源总量。这一能源总量目前占全球年能源消耗的3.1%左右。

youdao

We need it to farm, to wash, to provide power, to control fires and—most importantly—to drink.

我们需要它来耕种、洗涤、提供电力、控制火灾，最重要的是——供我们饮用。

youdao

This so-called 'bio-gas' is burned like natural gas in a small electric power plant right on Vander Haak's farm.

VOA: standard.2010.02.23

Guanting Wind Farm security supervisor Zong Minqiang says all the power produced on the farm makes up one-tenth of Beijing's electricity needs.

VOA: standard.2010.08.03

especially right now,he says. In Germany, the above market price paid to wind and solar farm owners adds about two to five Euros to the average household's monthly power bill.

VOA: standard.2010.03.23

The facility, run by renewable energy firm Farm Power, will be among the last to qualify for higher rate government subsidies for generating power.

BBC: Dorset solar farm 'will power 100 homes'

Finally, once the biofuel crops have been planted, grown and harvested -- often with the direct involvement of fossil fuels in the form of fertilizers, pesticides and petrol to power farm equipment -- they then have to go through a distillation and fermentation process to actually turn them into fuel.

CNN: Biofuel: Green savior or red herring?

The company has also announced plans to build two "clean coal" power plants last week just as it announced the completion of a wind farm that will provide power to 24, 000 homes.

FORBES: Greener Days Ahead?