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Rolling Blackouts

February 2, 2011 by · Comments Off on Rolling Blackouts 

Rolling Blackouts, Bearing failure, also called load shedding, power outage intentionally designed electric. Power outages are a measure of last resort used by a power company to avoid a total failure of the electrical system. They are usually in response to a situation where demand for electricity exceeds the capacity of the power network. Power outages can be traced to a specific part of the electricity grid or perhaps more widespread and affect entire countries and continents. Power outages usually the result of two causes: insufficient production capacity or poor transport infrastructure to provide sufficient power to the area where it is needed.

In many African countries, South Asian and Latin American countries (eg Bangladesh, India, Yemen, Nepal, Pakistan, Cameroon, Democratic Republic of the Congo Republic, Nigeria, South Africa, Egypt, Zimbabwe and Dominican) blackouts is a staple of everyday life. Sometimes, these cuts are planned at specific times of day and week, allowing people to circumvent the time of interruption known. In most other cases, power outages can occur without warning, usually when the transmission frequency is less than the “safety” limit.

Power generation and transport systems can not always meet the requirements of peak demand-the highest amount of electricity required by all utility customers in a given region. In order to reduce electricity demand on power systems at critical times, researchers have developed a prototype ballast that quickly and reliably sheds the electric charge in the lighting system of a building. Ballast unloader ballast is dimming instant start bi-level and high-power line receiver signal (PLC) for automatic dimming response.

By light intensity by an electronic signal, the ballast reduces the supply current of the lamps. Injector signal lighting circuits building ballast control, eliminating the need for additional wiring. Ballasts respond to a signal sent by the service or the customer’s system power management, reducing the lighting power by one third. Field studies have shown that building owners might dim the lights by as much as 40% for short periods of time without affecting 70% of building occupants or impede productivity. Ninety percent of the occupants of the building have agreed to reduce levels of light when they were told it was done to save energy.

The ballast system of new work on individual fixtures, and not on the main electricity grid. The system is recommended for new construction and renovation and promises good returns on investment in energy savings. Markets in the U.S., the system has duration of three years or less payback period for new construction. The use of ballast has the potential to reduce U.S. demand for 20,000 megawatts peak power. If used widely, it has the potential to help avoid breakdowns.

In April 2006, parts of Texas experienced rolling blackouts due to excessive use of air conditioning due to unusually high temperatures. The outage lasted the longest power for five hours, affecting areas in the Middle East to South Texas. [Citation needed]

In February 2011, North and Central Texas experienced rolling blackouts due to 50 power plants tripping offline.

Temperatures ranged between 8 ° C and 19 ° F. The timing of the blackout range from 20 minutes to over five hours. Affected areas included Bell, Bexar, Brazos, Collin, El Paso, Dallas, Delta, Harris, Hill, Hidalgo, Hunt, McLennan, Montgomery, Navarro, Smith, Tarrant, Travis, Webb and Williamson counties. [via wikipedia and various sources]

ERCOT

February 2, 2011 by · Comments Off on ERCOT 

ERCOT, Two men from Odessa 20 years spend more than 2 years behind bars on charges of cocaine. Juan Vargas and Edgar Lujan were convicted in federal court Tuesday to 30 months for possession with intent to distribute. Both admitted being involved in a high-speed chase in August, when Vargas struck a police vehicle lae in an escape attempt before being caught.
The Electric Reliability Council of Texas, ordered the power brownouts rolling Wednesday in San Marcos and throughout Texas, as part of a statewide response to the large power demand caused by winter cold.

Brownouts are a response to load pre-planned triggered by heavy power use. Rolling brownouts are controlled, temporary interruptions of electricity service, which lasts from 10 to 45 minutes per quarter.

“These voltage drops are made to avoid uncontrolled, widespread power outages across the state,” said Tom Taggart, director of public services.

Circuits feeding different sections of the city from three positions in San Marcos have been subjected to rolling brownouts. Traffic signals will be affected by brownouts and will be restored to normal function when reaction.

Residents are also reports of water service freezes their home systems, which may require the assistance of thaw or plumbers. The city has suspended meter reading to avoid freezing feet, Taggart said.

If people lose power, it should be restored in about 45 minutes. If the power is more than an hour, customers can call 512-393-8313 for assistance.

Electric Reliability Council of Texas has ordered utilities to begin rotating power cuts to offset a shortage of electricity due to the extremely cold weather.

The order took effect Wednesday morning, a day after an ice storm and snow-blanketed parts of Texas.

Consumers and businesses are encouraged to reduce their electricity use. ERCOT had no timetable for when rotating blackouts would end.

TheERCOT region includes Houston, Dallas, Fort Worth, San Antonio, Austin, Corpus Christi, Abilene, and the Rio Grande Valley.ERCOT manages the flow of electricity to approximately 22 million customers in Texas.

Rotating blackouts are defined as “controlled, temporary interruptions of electricity service and usually last from 10 to 45 minutes per quarter.”

Customers need critics, such as hospitals and nursing homes, are generally excluded from failures. http://www.ercot.com/ for online ERCOT, which operates the power grid in much of Texas, imposed on power outages due to the loss of several power plants during the night during an ice storm Wednesday, a spokesman said ERCOT.

She could not say when the blackouts would end. The network operator urged consumers to reduce their energy consumption.
Electricity traders said that prices were ERCOT Hourly $ 2,000 per megawatt-hour, 50 cons and where he usually negotiated. (Reporting by Scott DiSavino, edited by John Picinich)

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