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- Step 1: Making Electricity Power plants — coal, natural gas, petroleum or nuclear — work on the same general principle. Energy-dense stuff is burned to release heat, which boils water into steam, which spins a turbine, which generates...
- So we somehow have to get electricity to our homes. This sounds like a job for powerlines. Transmission First, electricity travels on long-distance, high-voltage transmission lines, often miles and miles across country. The voltage in these lines...
- With the exception of Idaho, the states with the lowest losses are all rural, and the states with the highest losses are all densely populated. Fun fact: Transmission and distribution losses tend to be lower in rural states like Wyoming and North Dakota. Less densely populated states have more high-voltage, low-loss transmission lines and fewer lower-voltage, high-loss distribution lines.
- Explore the transmission and distribution losses in your state on our interactive graphic. Transmission and distribution losses vary country to country as well. Some countries, like India , have losses pushing 30 percent. Often, this is due to electricity thieves. Step 3: Using Electricity Inside Your Home Utility companies meticulously measure losses from the power plant to your meter. They have to, because every bit they lose eats into their bottom line. Are you an energy wonk attempting this? It could be negligible, or it could be another few percent. The Future Of Transmission and Distribution Losses Grid engineers are working on technologies like superconducting materials that could essentially reduce electricity transmission and distribution losses to zero.
Are Underground Power Lines Really The Solution To Power Outages In South Florida?
But for now, the cost of these technologies is much higher than the money lost by utility companies through their existing hot, leaky power lines. A more economical solution to reduce transmission and distribution losses is to change how and when we use power. They change every instant based on things like the weather and power consumption. When demand is low, like in the middle of the night, losses are lower. Utilities are experimenting with ways to spread out electricity use more evenly to minimize losses. The same principle applies to your house, which is basically your own personal grid. You can reduce losses in your home by spreading out your electricity use evenly throughout the day, instead of running all your appliances at once. Adding Up The Losses Generating electricity, we lost 22 quadrillion Btu from coal, natural gas, nuclear and petroleum power plants in in the U. Have an idea for an energy topic that could be fun in the classroom?- Follow the links below to find similar items on the Digital Library. Many people also want to know whether the EMF electric and magnetic fields produced by power lines and other electrical devices affect our health. Although no adverse health effects of electric power EMF have been confirmed, there is continued scientific uncertainty about this issue. Research on EMF is ongoing throughout the world.
- The purpose of this booklet is to answer some common questions that the BPA Bonneville Power Administration receives about the possible effects of power lines on health. First, some basic electrical terms are defined, and electric and magnetic fields are debed. Next, answers are given to several questions about recent scientific studies. Some important information about electrical safety follows. We then describe how BPA is addressing public concerns about potential health effects of power lines. The last section tells you how to obtain more detailed information about the health and safety issues summarized in this booklet. Physical Description.
U.S. Energy Information Administration - EIA - Independent Statistics And Analysis
Favorite Answer 1. Zero, a magnetic field cannot be sustained inside of a closed conductive surface 2. Yes, in order to establish a potential, there must be a point of reference, since everything on earth can contact earth, it makes a convenient point of reference for everything on earth. Same as the answer to 1. The car is a continuous conductive surface except for the windows. Therefor, you are safe inside the car. Leaving the car exposes you to the electricity. In order for current to flow, there must be a current loop, since any one bird is on only one wire at a time, there is no current flow and the bird is safe. Now, if one bird on one wire stretches it's wings and a bird on another wire stretches it's winds, the two birds can be in trouble. In fact, if birds fly up in a group, they can be close enough to each other to create an arc between them. It's the nature of electricity at work. Electricity is always trying to reach the ground, and if an electrical conductor like a wire or cable provides a path, electricity will follow it.Lost In Transmission: How Much Electricity Disappears Between A Power Plant And Your Plug?
Birds aren't grounded -- no part of them touches the ground -- so they don't act as conductors. But imagine a young pigeon with very, very long legs. If it sat with one foot on a power line and touched the ground with the other, it would experience a shock, and you'd most likely end up with roasted squab. Be warned -- you don't have to be standing on the ground to get a serious shock from power lines.- If you stand on a ladder or roof and touch a high-voltage wire, you'll get a serious, maybe even fatal, blow. Electrical workers who work on power lines are protected by insulated clothing and gloves, and use insulated tools to prevent shock. The birds don t like the feel of the electromagnetic field. If you see them on the top conductors of the high tension metal tower lines, that is because on those lines, the top wire is not for conducting electricity, it is grounded and is used for lightning protection and equalizing potential of the towers.
- Or the power line is off. I am not a scientist or engineer. I am a high voltage lineman and have made this observation over the 35 years in the field. Get your answers by asking now. Ask Question Join Yahoo Answers and get points today.
Electric Power Lines : Questions And Answers On Research Into Health Effects.
This page has no sub-navigation. Skip to page content. Does EIA publish the location of electric power plants, transmission lines, and substations? The U. Energy Altas has an electricity map application and a data catalog , which include locations and data for Power plants with a combined electric generation nameplate capacity of at least 1 megawatt MW that are operating, on standby, or on short-term or long-term out of service. The attribute data for the power plant layer includes street address, zip code, city, county, state, latitude, and longitude for each power plant, as well as other data about the plant. Electric transmission lines with voltages varying from 69 kilovolts kV to kV alternate current AC and direct current DC lines. Electric substations that are primarily associated with electric power transmission. In this layer, substations are considered facilities and equipment that switch, transform, or regulate electric power at voltages equal to, or greater than, 69 kV.- EIA is not the source for the transmission line and substations data. EIA provides the data to give users a better understanding of electric infrastructure. Users should review the metadata information to find the source of the data. Users can access the data from the data catalog to explore and download data in shapefiles, spreadsheets, KML files, and geodatabase formats, or link to Application Programming Interface API. Much of the data for power plants that are included in the Energy Atlas data files are also in the "PlantYyyyy" file of the annual survey Form EIA database. The county, state, latitude, and longitude of U. EIA does not publish similar maps or geographic information on the location of electric power plants, transmission lines, or substations in any other countries.
Proximity To Overhead Power Lines And Childhood Leukaemia: An International Pooled Analysis
Do you know enough about electrical safety to pass an electrical safety quiz? Take the Networx Electrical Safety Quiz and find out! Answers at the bottom of the page 1 How does electricity move from one place to another? Electricity travels through the air. Electricity travels through conductors. Electricity only travels through electrical wires. High fever b. Blacking out c. Electrical burns 3 True or false: You are more likely to experience an electric shock if you touch an electrical object with wet hands. True 5 Which of these is required in wet areas like kitchens, bathrooms, basements and outdoors? Ground-fault circuit interrupter. Rotating electric outlet. Tamper-resistant receptacle. Yes 7 What is the proper way to unplug your electrical appliances from a power strip?Could Someone Show A Picture Of The Solution For Powerlines 3 Game?
Simply pull the cord gently until the plug comes out. Put your foot on the power strip to hold it steady while you pull the cord loose. Use your hand to remove the plug, being careful not to pull on the cord. Metal b. Porcelain c. Dry clean wood 9 If a friend receives a severe electric shock from an electrical appliance in your home, what should your first response be? Grab the appliance and throw it aside so that you can tend to your friend. Run to the circuit breaker and turn off the main switch. Use a wooden broomstick to push the appliance away safely.- You, your tools and ladders should be at least 10 feet away from the power lines. You, your tools and ladders should be at least 20 feet away from the power lines. Answers 1 B: Electricity travels through conductors such as metal, concrete, water, wet wood, and even people. If the current is large enough, the heat will cause an electrical burn, which can lead to serious tissue damage and other internal injuries. If you ever incur an electrical burn, seek immediate medical attention. Use extreme caution when doing electrical work around water or in wet conditions. A low-voltage electrocution for a mere 3 seconds can do the same amount of damage as a high-voltage electrocution does in 0.
- Either way, human bodies are damaged by electric voltage - high or low - so please be careful. These safety devices are normally required in wet areas of your home according to electric code. For information about rotating electric outlets and tamper-resistant receptacles, check this out. An extension cord that is covered by carpeting can overheat and cause a fire. Running an extension cord along a baseboard is better than underneath a rug, but you should only use extension cords for temporary work situations. For long-term needs, hire a qualified electrician to install a new permanent outlet. Always disconnect appliances from the power source by grasping and removing the plug.
- You should therefore be very careful with any metal appliances that are exhibiting electrical malfunctions. Touching your friend is not a good idea because he or she may conduct electricity into your body and then you will both be shocked. You should call your utility company to see what safety measures can be taken if you're working near power lines. And remember, power lines may have a weather coating on them for protection against the elements, but this will not protect you from shock. We hope that you passed this electrical safety quiz with flying colors. Now send the electrical safety quiz to your friends and children to make sure that everyone is well informed about electrical safety. Quiz each other for fun! Updated January 2,
Why Not Bury California's Fire-prone Power Lines Underground? The Reason Is Sky High
Sarcone Solutions for your logic and mechanical puzzles "Dear Archimedes Lab, if you have 3 houses and each need to have water, gas and electricity connected, is it possible to do so without crossing any lines? Can you please post the solution? Thank you very much! Material: Pencil, piece of paper. Configuration: There are three houses or squares drawn on paper and below them three smaller squares representing gas, water, and electricity suppliers. Aim of the game: Draw lines to get each utility into every house, without crossing over any line. Origin of the puzzle: Unknown. Sam Loyd claimed that he invented this recreational math problem about But this puzzle is MUCH older than electric lighting or even gas, Loyd most probably modified a previously existing puzzle.Are Underground Power Lines Really The Solution To Power Outages In South Florida? | WLRN
Editor's notice: This is a pure abstract mathematical puzzle that imposes constraints that would not be issues in a practical engineering scenario Since the puzzle is very famous, we have chosen to present it in a new light. We have laid on water, internet connection and electricity from the utility suppliers W, O, L to each of the 3 houses A, B and C without any pipe crossing another see fig. Take a pencil and check if the work has been done properly! See the solution Once and for all If we differentiate with colors the relative connections which start from the utility suppliers W, O and L, we can see on the image that some houses A and C, see image below are connected twice to the same utility supplier! Simple explanation Why is it impossible to solve this puzzle in 2 dimensions? Have a look at the diagram in fig. Alternative solution 1 Nevertheless, this puzzle is possible to solve by using subterfuge The only way this can be done without the lines crossing is by allowing one of the lines it doesn't matter which one to enter a house or a utility company and then emerge from the building on the other side.Frequently Asked Questions (FAQs) - U.S. Energy Information Administration (EIA)
In fact, the wording of the puzzle is a bit imprecise and doesn't forbid lines to go through the houses or to use the third dimension! Alternative solution 2 Here is another neat way to solve it: reproduce the puzzle on a paper sheet, then roll it up to form a cylinder and add a paper strip to it as shown in fig. The final image c shows how the puzzle should appear and how the houses A, B and C are finally connected to the utility suppliers.- Alternative solution 3 There is another neat and elegant way to topologically solve the puzzle! To get a hint or to suggest a solution, please, contact us. But if you are impatient visit our FB page to see the solution and click like if you liked it! Maths behind the puzzle: Graph theory and examples A planar graph is a collection of points connected by lines, that can be drawn on the plane in such a way that its lines called edges intersect only at their vertices endpoints. In other words, a planar graph, unlike the other complete graphs , can be represented with no intersecting edges. For instance, the graph in the example below with 4 vertices K4 is planar because if we move the vertex 4 through and beyond the triangle , we can see that there are no more edge intersections. If we perform the same transformation to this graph, we notice that there are always at least two edges that intersect, as shown in the fig. In our puzzle, the houses and utility suppliers together represent the Vertices, and the Faces are the areas inside a closed loop of Edges this formula counts the area outside the graph as one of the Faces.
- Important: there can't be any Vertices in the middle of a Face. We know that the boundary of every Face is a closed loop of Edges, and we know that every Edge goes between a house and a utility supplier there is no reason to go from a house to a utility and back to the same house. That means the boundary of a Face is made by at least 4 Edges see fig.
Electromagnetic Fields And Cancer - National Cancer Institute
This counts each Edge twice, as every Edge is a boundary for 2 Faces. We know, however, that there are only 9 Edges! This is a contradiction Since nothing can have 9 edges and 10 edges at the same time, drawing a solution to the three utilities puzzle must be impossible.- Three-phase power can be defined as the common method of alternating current power generation, transmission, and distribution. It is a type of polyphase system, and is the most common method used by electric grids worldwide to transfer power. Watch the Video More Raritan Resources Transcript: Welcome to this animated video that will quickly explain 3 phase power. The power that enters a data center is usually 3 phase AC power, which means 3 phase alternating current power. This example is different from what I would use to describe how a three phase motor uses power. In the alternating current video, we showed how spinning a magnet past one wire caused the current to flow back and forth. In this three phase example, the north positive end of the magnet is pointing straight up at line one. To help explain the concept easier, let's use a clock face and say that line one is at the twelve o'clock position. The electrons in line 1 are going to be flowing towards the north pole of the magnet.
Could Someone Show A Picture Of The Solution For Powerlines 3 Game? | Yahoo Answers
What happens when the magnet now swings 90 degrees? As we saw in the alternating current video, because the magnet is perpendicular to line 1, the electrons in line one will stop moving. Then as the magnet swings more than 90 degrees and the south pole of the magnet comes closer to line one, and the electrons will reverse which means the direction of the current will reverse.- That was described in detail in the alternating current video. If you clicked on this video without a thorough understanding of alternating current, please view that video first. Looking at the chart, you can see why I picked an analog clock face. A circle is degrees and the clock divides the circle into 12 sections so that each hour covers 30 degrees of the circle. Going from 12 to 3 is 90 degrees and going from 12 to 4 is degrees. When generating 3 phase power, the copper lines are located degrees apart.
- So when you're at the four o'clock position in our example here, that's degrees away from line one. The 3 lines are equally spaced around the circle. If the north pole is closer to one of the 3 wires, then the electrons move in that direction. The closer the south pole gets to each wire, the more the electrons move away from the south pole. In each three of these lines, as the electrons are moving back and forth, they are not always moving in the same direction or speed as the other two lines. But they are still moving in line 1 attracted by the closer north pole and they are moving in line 3 repelled by the south pole. Hopefully this example shows you how at any time current is always flowing in at least 2 lines. It also shows the relationship between the 3 lines as the magnet spins in a circle. As the magnet goes around the clock face, each of the 3 lines will be affected by either the north or south poles, except when the magnet is perpendicular to a line.
Oregon Occupational Safety And Health : Electrical Overhead Powerline Clearance : State Of Oregon
Only 1 of the 3 lines is ever at peak, but because there are 3 lines, there are 3 peak positive and 3 peak negative positions for every cycle. At 6 different positions on the clock face, one of the lines is at peak. If you look at the wave form example you can see the first line in blue, and it starts at zero. Which means the magnet is perpendicular to that line. As the magnet moves, you can see the current go to its peak. Then as the positive pole spins past that wire, the current starts to weaken until the magnet is perpendicular again which results in zero current. As the negative pole starts to come closer, the current reverses and moves in the other direction towards another peak before returning to zero current.Trees, Power Lines & Right-of-Way Safety | Victory Electric Cooperative
This completes 1 full cycle for that line. In order for the 2 dimensional chart to show the relationship between the lines, it now shows a gap that signifies the length of time it takes the magnet to spin degrees. This is when the red line is at zero current. As the magnet keeps spinning, the red line will move towards its peak positive current, then come back to zero after which the current will change direction. The chart also shows that the third line will start at zero current degrees after the 2nd line. So as the electrons flow from a positive to a negative peak, the current is displayed as flowing from positive to negative values.
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