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  2. Per-unit system - Wikipedia

    en.wikipedia.org/wiki/Per-unit_system

    In the power systems analysis field of electrical engineering, a per-unit system is the expression of system quantities as fractions of a defined base unit quantity. Calculations are simplified because quantities expressed as per-unit do not change when they are referred from one side of a transformer to the other.

  3. List of automation protocols - Wikipedia

    en.wikipedia.org/wiki/List_of_automation_protocols

    EnOcean – Low Power Wireless protocol for energy harvesting and very lower power devices. European Home Systems Protocol (EHS) - merged to KNX; European Installation Bus (EIB) named also Instabus - merged to KNX; INSTEON - SmartHome Labs Pro New 2-way Protocol based on Power-BUS. KNX – Standard for building control. Previously Batibus/EHS/EIB

  4. Electric power system - Wikipedia

    en.wikipedia.org/wiki/Electric_power_system

    A steam turbine used to provide electric power. An electric power system is a network of electrical components deployed to supply, transfer, and use electric power. An example of a power system is the electrical grid that provides power to homes and industries within an extended area.

  5. Power system operations and control - Wikipedia

    en.wikipedia.org/wiki/Power_system_operations...

    The graph on the right describes an extremely simplified system, with three committed generator units (fully dispatchable, with constant per-MWh cost): [7] unit A can deliver up to 120 MW at the cost of $30 per MWh (from 0 to 120 MW of system power); unit B can deliver up to 80 MW at $60/MWh (from 120 to 200 MW of system power);

  6. Power-system automation - Wikipedia

    en.wikipedia.org/wiki/Power-system_automation

    The term “power system” describes the collection of devices that make up the physical systems that generate, transmit, and distribute power. The term “instrumentation and control (I&C) system” refers to the collection of devices that monitor, control, and protect the power system. Many power-system automation are monitored by SCADA.

  7. List of IEC standards - Wikipedia

    en.wikipedia.org/wiki/List_of_IEC_standards

    IEC 60871 Shunt capacitors for a.c. power systems having a rated voltage above 1 000 V; IEC 60873 Electrical and pneumatic analogue chart recorders for use in industrial-process systems; IEC 60874 Fibre optic interconnecting devices and passive components – Connectors for optical fibres and cables

  8. Prospective short-circuit current - Wikipedia

    en.wikipedia.org/wiki/Prospective_short-circuit...

    In power transmission systems and industrial power systems, often the short-circuit current is calculated from the nameplate impedances of connected equipment and the impedance of interconnecting wiring. For simple radial distribution systems with only a few elements, hand calculation is feasible, but computer software is generally used for ...

  9. Electric power industry - Wikipedia

    en.wikipedia.org/wiki/Electric_power_industry

    Electric power distribution is the final stage in the delivery of electric power; it carries electricity from the transmission system to individual consumers. Distribution substations connect to the transmission system and lower the transmission voltage to medium voltage ranging between 2 kV and 35 kV with the use of transformers . [ 12 ]