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Most electricity for the power grid is generated as 3-phase because this can be most economically sent long distances on high voltage power transmission lines. While the additional wire and equipment is more expensive than 1-phase, resistive losses are minimized by using high voltage and radiative losses are minimized because the different phases partially cancel each other. Most power transmission lines use 3-phase-delta as it requires no separate return/neutral line (as required by 3-phase-wye, 2-phase, and 1-phase) thus saving some money on these very long lines.
Using more than 3 phases would be uneconomical as the costs for additional wire, insulators, poles in switches, Transformers, and other equipment would increase without any additional savings beyond the use of 3-phase.
By use of transformers the electricity generated, transmitted, and distributed as 3-phase can be converted to whatever must be delivered to the customer according to their needs: 3-phase-delta, 3-phase-wye, 2-phase, or 1-phase.
Most industries have 3-phase delivered as either delta or wye because large motors start and run easier and more efficiently on 3-phase than on 2-phase or 1-phase. Also if the industry needs DC, 3-phase is easier to rectify (using a 3-phase bridge rectifier) and filter to get DC with less ripple than using 2-phase or 1-phase.
Most homes have 2-phase delivered and use both phases for appliances, and one or the other phase for devices needing only 1-phase power.
Most small generators/alternators generate only 1-phase to keep them simpler and less expensive.
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How can hydroelectric energy be used efficiently and or conserved?
Power generated by hydroelectric means is no different than power produced by any other means. The only way to demonstrate efficiency and conservation of energy is by keeping the lakes above the dams full of water.
Is hydrothermal energy the same as hydroelectric energy?
No. Hydroelectric power is any power coming from water, usually from its movement, but also from its heat (thermal). Hydrothermal power is power generated only from the temperature of the water (hot springs, ocean thermal, geothermal).
How measure 3phase power without wattmeter?
Take the current average of the three lines.Ex.Phase A = 10AmpsPhase B = 9 AmpsPhase C = 11 AmpsAverage = 10AmpsTake the voltage average of the three lines to ground,Phase A = 460VPhase B = 450VPhase C = 470VAverage 460VPower = V*I (Voltage times Current)Since we have a AC circuit,Power = V*I*1.732CommentUnfortunately, the above equation for power only works if you use line voltage; your explanation describes phase voltages. And, of course, it doesn't take power factor into account.
What are the reasons for generating energy as alternating current?
ENERGY CAN BE GENERATED ONLY AS A ALTERNATIG CURRENT.THERE IS NO WAYS OF GENERATING ENERGY AS A DC DIRECTY.IN CASE OF DC GENERATION ,AC IS GENERATED FIRST AND THEN RECTIFIED INTO DC. TO UNDERSTAND THIS CLEARLY YOU NEED TO KNOW THE WORKING OF GENERATORS. THE REASONS FOR GENERATING ENERGY AS AC IS ENERGY CANNOT BE GENERATED AS DC.
How do you convert 220 3phase ac to 125 vlt dc power or can you run dc motor on ac power just to test it for a minute or to without damaging the motor?
You can't. A three-phase motor works on a completely different principle from a d.c. motor (e.g. there's no electrical connection to the rotor). As well as this, with a d.c. supply, you will only be able to connect one phase of the field windings, and the resistance of that field winding will be low compared with its reactance, and may well burn out if you connected it to a d.c. supply.
Does solar power include coal and oil?
No, Solar Power is generated from Sunlight only.
What percentage of Americans power is generated by the wind?
Only 2.9%, right now.
Is there a tv that uses water?
Only if the electricity used to power it is generated by hydroelectricity
Does all electricity generate from nuclear technology?
No. electric power has been in common use for over one hundred years, but nuclear technology has been in use for only about fifty or sixty years. Hydroelectric power is generated by flowing water as at a dam. Solar electric power is electricity generated by sunlight. Geothermal electricity is generated by the heat from inside the Earth used to convert water into steam in a generator. Windmills driven by the wind generate electric power; and there are many other sources of electric power.
Why is power generated in 3 phase only?
Because it's a very good compromise between complexity and efficiency.
What is a resource that can not be made again by nature or people?
Oil is one. Other examples are coal, natural gas and uranium.Answer:Fossil fuels are generated by nature, but these can be duplicated by chemical processes.All metals and other ore can only be generated by nature.Bio-fuels and plant and animal resources are generated by nature, but people can enhance the process to increase yieldsSolar energy and gravity are resources that are only generated by nature.
A resource that can be made again by people or by nature is?
Oil is one. Other examples are coal, natural gas and uranium.Answer:Fossil fuels are generated by nature, but these can be duplicated by chemical processes.All metals and other ore can only be generated by nature.Bio-fuels and plant and animal resources are generated by nature, but people can enhance the process to increase yieldsSolar energy and gravity are resources that are only generated by nature.
How can hydroelectric energy be used efficiently and or conserved?
Power generated by hydroelectric means is no different than power produced by any other means. The only way to demonstrate efficiency and conservation of energy is by keeping the lakes above the dams full of water.
Do you have a substitute for nuclear energy?
Burning fossil fuels or creating hydro electric power systems are currently the only viable alternatives to nuclear power in terms of the amount of power generated.
What is water electricity?
hydro power is little turbines underwater that works only with strong flowing water so the steeper hill the better power generated for renewable energy for homes
Is a home solar generator a good investment?
A solar home generator would be a good investment if you also invested in a battery system that would allow you to store the power generated for later use. Otherwise you could only use the power while it was being generated, and that's not the most efficient.
Is hydrothermal energy the same as hydroelectric energy?
No. Hydroelectric power is any power coming from water, usually from its movement, but also from its heat (thermal). Hydrothermal power is power generated only from the temperature of the water (hot springs, ocean thermal, geothermal).
