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    How Power is Delivered to Your Home

    Have you ever considered how handy it is to flip a switch or push a button and have instant conveniences? It seems so simple; you get a

    Central Alabama Electric Cooperative

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    How Power is Delivered to Your Home

    Have you ever considered how handy it is to flip a switch or push a button and have instant conveniences?

    It seems so simple; you get a little cold or hot, you bump your thermostat up or down; your family gets hungry, you grab food from your refrigerator and heat it up in the microwave, or cook a meal on your flat top stove; stressful day at work, you jump into a hot tub of water; need to know what’s going on in the world, you grab the remote and turn on the TV. But how does power get to your home? It’s a complicated process that has many steps, watch the video, The Path of Electricity, or you can learn more in-depth about each step below.

    Distribution System

    Distribution System Transmission System Power Generation: Coal Natural Gas Hydropower Nuclear Renewables Back to Top

    Substation

    CAEC purchases energy from our generation and transmission co-op, PowerSouth, which generates or purchases the electricity and transmits it over long distances on transmission lines to distribution utilities, like CAEC. Our substations are the point at which power grid infrastructure becomes distribution. Distribution substations step down the voltage coming in from the transmission lines in order to begin the process of sending power to your home. A lot of work goes into planning new substations or even substation upgrades. CAEC uses long-term forecasting to plan for new substations, which has a direct impact on reliability. When you sign up for service, no matter what your intentions are for that meter, we have to factor in your current and future needs for power into these forecasts. Siting and building a substation is no simple process; in fact, from the planning phase to implementation, it takes two to three years to complete just one, at a cost of approximately $1.5 million.

    Power Transformer

    The voltage coming to the substation, at 115,000 or 46,000 volts, is too high to go directly into your neighborhoods. Power transformers are used to step the voltage down to an acceptable level to bring into your neighborhoods.

    Distribution Transformer

    We’re not ready to get the power to your house just yet; the voltage coming from the power transformer, at 25,000 or 13,200 volts, is still too high to go directly into your home. From there, power is distributed across miles (depending on how far your home is from the substation) of power lines to reach a distribution transformer, which steps the power down again to the voltage level required by your home, which is 120/240 Volts. In the last five years the cost of transformers has risen 50 percent, partly due to escalating material costs and also to federal regulations requiring higher efficiencies.

    Service Drop and Meter

    From the distribution transformer, a service wire is connected to your house, which is called the service drop. If your service is overhead, CAEC connects the service wire to your weatherhead, which is the point of connection between CAEC’s facilities and the homeowner’s. If your service wire is underground, CAEC connects the service wire to your underground meter box. The tie that is made on the source side of the meter is the point of connection between CAEC and the member. The meter box in both cases allows CAEC to measure the amount of energy used.

    Power to Your Home

    From the meter box, a wire usually connects to the home’s breaker box, which functions as a safety mechanism for your home. At this point your home wiring comes into play and enables energy to be sent to your plug outlets and light switches at the touch of a button or flip of a switch.

    This only covers a few major pieces of equipment we use to keep your power on more than 99.9 percent of the time. Some other vital equipment we use includes highside and lowside breakers, voltage regulators and lightning arrestors. This process also does not cover the maintenance we must perform and personnel it takes to ensure the infrastructure we have put in place stays in top condition. This includes our vegetation management program, line and substation inspections and other critical programs.

    Transmission System

    Back to Top

    As we learned above with our detailed look at the distribution system, it takes many parts working together to make the transmission system possible. It is this grid, owned and maintained by CAEC’s Generation and Transmission provider, PowerSouth, as well as transmission lines owned by Southern Company that makes delivery of electricity possible to our members. And it all starts at the generation plant:

    Generation

    The generation of electricity begins at the power plant— where fuel sources such as coal, natural gas or hydro are used to transform water to steam by a heating process. For example, in most coal fired power plants, chunks of coal are crushed into fine powder and are fed into a combustion unit where it is burned. Heat from the burning coal is used to generate steam which is piped throughout the plant.

    Turbines/Generator

    Since steam is water in a highly pressurized state, it is sent to a turbine where the pressure causes the blades on the turbine to spin at a high rate of speed. A shaft is connected between the turbine and a generator. Inside the generator is a magnetic field which produces voltage—or electricity at approximately 15,000 volts (V). For the power needs of CAEC’s members and the consumers of PowerSouth’s other distribution cooperatives, it takes about 10-12 years and between $700 million and $3 billion to build just one generation plant.

    स्रोत : caec.coop

    Alliant Kids

    It's always there whenever you flip a switch or plug in a cord, but electricity has to travel a long way to get to your house. In fact, the generating station where your electricity is made might be hundreds of miles away!

    How electricity is made and delivered to your home

    Electricity makes an interesting journey from the generating station to your home.

    It's always there whenever you flip a switch or plug in a cord, but electricity has to travel a long way to get to your house. In fact, the generating station where your electricity is made might be hundreds of miles away!

    All the poles and wires you see along the highway and in front of your house are called the electrical transmission and distribution system. Today, generating stations all across the country are connected to each other through the electrical system (sometimes called the "power grid"). If one generating station can't produce enough electricity to run all the air conditioners when it's hot, another generating station can send some where it's needed.

    Here's how electricity gets to your house:

    Electricity is made at a generating station by huge generators. Generating stations can use wind, coal, natural gas, or water.

    The current is sent through transformers to increase the voltage to push the power long distances.

    The electrical charge goes through high-voltage transmission lines that stretch across the country.

    It reaches a substation, where the voltage is lowered so it can be sent on smaller power lines.

    It travels through distribution lines to your neighborhood. Smaller transformers reduce the voltage again to make the power safe to use in our homes. These smaller transformers may be mounted on the poles, or sitting on the ground (they’re the big green boxes, called pad mount transformers).

    It connects to your house and passes through a meter that measures how much your family uses.

    The electricity goes to the service panel in your basement or garage, where breakers or fuses protect the wires inside your house from being overloaded. (Never touch a service panel!  It is only to be operated by your parents or a professional.)

    The electricity travels through wires inside the walls to the outlets and switches all over your house.

    स्रोत : www.alliantenergykids.com

    Q1 From where does the electricity come to our home...

    Free solutions for Selina Solutions CONCISE Physics - Class 8 ICSE Chapter 9 - Electricity Short/Long Answer Questions - I question 1. These explanations are written by Lido teacher so that you easily understand even the most difficult concepts

    Selina Solutions Class 8 Physics Solutions for Exercise Short/Long Answer Questions - I in Chapter 8 - Electricity

    Question 1 Next

    Q1) From where does the electricity come to our home?

    Answer: Solution:

    In our homes, city substation of electricity provides the electricity.

    Video transcript

    "hello students welcome to Lido learning's question and answer videos my name is pallabi and i teach maths and science at lido so here we have a fairly simple question in front of us that is we have to say from where does the electricity come to our home wow this sounds interesting isn't it so in our homes the city substation of electricity provides the electricity now before we go ahead with that and just stop there let's just try to elaborate this a little bit so that this is our home right such a beautiful home we have isn't it okay and over here you see this wire over here so let me label this so this is the distribution line so this is the distribution line so i'm sure all of you must have seen this type of power line in front of you right so from here only the electricity is supplied to the home right so there is a small transformer over here so this there is a small transformer on the pole here so there's a transformer let me just write it down so this transformer on the pole it steps down the voltage and before the voltage enters the house so this transformer it is a step down transformer it just steps down the voltage before it enters the hub okay now from what happens have you all seen this line over here yes so this is the transmission line let me just write it so this is transmission line now we'll come to here come to this but before that so this carries electricity over long distances so this transmission line it carries electricity over long distances okay now let's say the power plant is there let's say this is our power plant where the power is getting generated right this is our power plant what happens after this so from this power plant let me just label it as well so that there is no confusion so we have the power plant here from where pile is generated from this power land power plant the power is going to a transformer again a transformer right so this is a transformer what is this transformer doing it sets up the voltage for transmission so this is a step up voltage so it you will study in your higher classes about transformer which step up as well as step down voltages so this is a step up transformer it steps up the voltage and then the voltage goes to the power line right so this is the transmission line and the transmission line can carry electricity through long distances then from this transmission line we the power goes or the electricity goes to another transformer so there is another transformer over here so this is another transformer and again this one is a step down voltage so this helps to step down the voltage so from the transmission line now the it has gone to the neighborhood transformer let's say this is the neighborhood transformer we don't need so much voltage so it steps down the voltage and from there then the voltage reaches the distribution line which is just for the neighborhood again there is a step down transformer attached in this line before right before it enters the house so this is how the electricity from the plant directly enters our house we may also say that the city substation of electricity it provides electricity to us right but this was the elaborated diagram of how the electricity reaches us i hope you understood this if you have any further questions please post your comments below also if you like this video and want to see more videos please don't forget to subscribe to Lido channel thank you "

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