Power Distribution For Dummies

Distribution voltages in continental europe are typically 110 kv 69 kv and 20 kv but practice varies from country to country.

Power distribution for dummies. It avoids equations except where helpful to illustrate basic electricity relationships. Since the power must stay the same if the voltage increases the current must decrease. 3 phase power distribution network. Alternating current is used for electric power distribution because it can easily be transformed to a higher or lower voltage.

A transformer transfers power from the primary coil to the secondary coil. Figure 1 power distribution network click to expand image. Power generation distribution for dummies or why intermittent wind solar will never work may 28 2020 by stopthesethings 4 comments if you re looking to wreck a grid and send power prices into orbit then pin your power hopes to wind and solar power delivered at mother nature s whims. It is also used to power large motors and other heavy loads.

Distribution power lines c01 qxd 8 24 2007 1 36 pm page 4. Smaller transformers connected to the bus step the power down to a standard single phase line voltage of about 7 2 kv for residential and rural loads while power from larger transformers can leave in another direction at the higher three phase voltages to serve large industrial and. Voltage the first term or concept to understand is voltage. Electrical power travels from the power plant to your house through an amazing system called the power distribution grid the grid is quite public if you live in a suburban or rural area.

Voltage is the potential energy source in an electrical circuit that makes things happen. Electrical energy losses are dependent on current flow. Likewise if the voltage decreases the current must increase. In some systems the buses distribute power to two separate sets of distribution lines at two different voltages.

The three key concepts you need to know before working with electronic circuits are current voltage and power. A three wire three phase circuit is usually more economical than an equivalent two wire. Transformers are the main reason we use alternating current instead of direct current in large power distribution systems. Throughout this book to build a complete working knowledge of electrical power systems.

The third piece of the puzzle is called power abbreviated p in equations. By using transformers the voltage can be stepped up so that the same amount of power may be distributed over long distances at lower currents and hence lower losses due to the resistance of the conductors. It is a type of polyphase system and is the most common method used by electrical grids worldwide to transfer power. Current is the organized flow of electric charges through a conductor and voltage is the driving force that pushes electric charges to create current.

The book includes descriptions and annotated photos of generators transmission towers transformers regulators fuses meters important components of a power distribution system.