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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. Isolated-phase bus - Wikipedia

    en.wikipedia.org/wiki/Isolated-phase_bus

    In electrical engineering, isolated-phase bus (IPB), also known as phase-isolated bus (PIB) in some countries, is a method of construction for circuits carrying very large currents, typically between a generator and its step-up transformer in a steam or large hydroelectric power plant. Isolated phase bus during installation at the Bui Dam Ghana ...

  5. Power engineering - Wikipedia

    en.wikipedia.org/wiki/Power_engineering

    Power engineering, also called power systems engineering, is a subfield of electrical engineering that deals with the generation, transmission, distribution, and utilization of electric power, and the electrical apparatus connected to such systems.

  6. 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);

  7. Motor control center - Wikipedia

    en.wikipedia.org/wiki/Motor_control_center

    Motor control centers are usually used for low voltage three-phase alternating current motors from 208 V to 600 V. Medium-voltage motor control centers are made for large motors running at 2300 V to around 15000 V, using vacuum contactors for switching and with separate compartments for power switching and control.

  8. 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.

  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 ]