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الموضوع: من مراحل تطور توليد الطاقة الكهربائية

  1. #1
    Consultant Engineer الصورة الرمزية أسامة حسن البلخي
    تاريخ التسجيل
    Sep 2014
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    من مراحل تطور توليد الطاقة الكهربائية

    من مراحل تطور توليد الطاقة الكهربائية
    الملفات المرفقة الملفات المرفقة
    لاإله إلا الله محمد رسول الله

  2. #2
    Consultant Engineer الصورة الرمزية أسامة حسن البلخي
    تاريخ التسجيل
    Sep 2014
    الدولة
    مكة المكرمة
    المشاركات
    1,401

    رد: من مراحل تطور توليد الطاقة الكهربائية

    The History of Alternating Current:

    The History of Electrification

    [I]The power grid started with long distance transmission and soon led to interconnected systems, these are some of the landmark early power generation sites.
    1.) Background
    2.) List of important early power sites
    3.) Sites by geography (interactive maps)

    The power grid as we know it began with isolated power generation systems across the world starting in the 1870s. The growth and unification of the systems into an interconnected AC power 'grid' helped raise the quality of life of people from all classes.

    Above:
    Long-Legged Mary Ann type early DC dynamo created and sold by Thomas Edison.

    Electric power first saw commercial use in the 1870s. DC systems dominated from the 1870s-1891. The 1891 Electro-Technical Exposition in Frankfurt marked the end of the DC era.

    Right:
    Illustration of a maiden providing electric power from a distance, International Electrical Exhibition Frankfurt 1891
    Direct Current Beginnings:

    DC power systems dominated in the 1870's and 1880s. "Small" systems were sold to factories around the world, both in urban areas, and remote undeveloped areas for industrial/mining use. Thomas Edison, Charles Brush, and Werner von Siemens lead the industry in DC systems. DC systems powered factories and small downtown areas but did not reach 95% of residents. Electric lighting was a luxury found only in hotels and other businesses as well as in the mansions of people like George Westinghouse and J.P. Morgan.
    The first methods used to power both DC and AC generation plants were coal-fired steam engines and hydroelectric power. Since most industrial cities were already located at waterfall/rapids, utilizing traditional mill power it was natural to convert to hydroelectric power. Learn more about methods of power generation on our page here.
    Since coal was costly, early business people envisioned sending great power over distance from dams to cities not already blessed with reliable hydro power. To send DC power over distance one needed to use high voltage:
    HVDC Power - This was the first method of transmitting electric power over distance. HVDC is the oldest and "newest" method of distance transmission, today it has reemerged in an advanced form to possibly replace major AC high-voltage routes.
    Alternating Current

    AC Power provided the solution to distance transmission. AC also provided a solution to interconnect generation sites. The development of the 3-phase AC power system in the late 1880s proved the effectiveness of the system and electrification of entire cities and regions began in the 1890s.
    More on Alternating Current History >
    More on Three Phase Power >
    2.) List of important early power stations

    Click on the power plants to learn more about them. Some of the pages are Edison Tech Center pages which have photos and videos.
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    لاإله إلا الله محمد رسول الله

  3. #3
    Consultant Engineer الصورة الرمزية أسامة حسن البلخي
    تاريخ التسجيل
    Sep 2014
    الدولة
    مكة المكرمة
    المشاركات
    1,401

    رد: من مراحل تطور توليد الطاقة الكهربائية

    3.) Sites by geography

    Below: Sites of engineering significance, some of which are early electric power stations.



    Connected Pioneers:

    Ernst F.W. Alexanderson
    - pioneer in wireless and TV transmission

    Ernst Julius Berg
    - developed two way wireless audio communication. Worked on AC power.

    Charles F. Brush
    - pioneered Generators, lamps, trolleys and an early profitable industry.

    Mikhail O. Dolivo-Dobrovolsky
    - pioneer of 3 phase AC power systems

    Galileo Ferraris
    - Early AC power pioneer. Inventor of the polyphase AC motor.

    Oskar von Miller
    - early pioneer of AC and HVDC power in Germany

    Edwin W. Rice, Jr
    - AC power systems pioneer. Leader of the electrical industry.

    William Stanley
    - inventor of the first modern transformer, heart of the AC power system.

    Charles P. Steinmetz
    - pioneer of AC power systems, first person to understand AC power mathematically.

    Nikola Tesla
    - improved upon many technologies, most notably AC power.

    Elihu Thomson
    - improved DC and AC power systems, arc lights

    George Westinghouse
    - innovator in many technologies, business leader.

    Related Topics: Sources:
    For a list of sources see each of the individual pages above.
    Click on the sites above and they will take you to a source.
    The Hawkins Electrical Guide. 1915
    The General Electric Story. Hall of History Publications. 2000
    Willamette Falls - Where the Future Began. 2013
    Alternating Current Development in America. by William Stanley. 1912
    For use of Edison Tech Center images and videos see our licensing agreement.



    لاإله إلا الله محمد رسول الله

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