Working principle of power equipment

Power transmission and distribution: Power complete equipment converts electrical energy into magnetic field energy through high-voltage switchgear, and then makes the current flow along a predetermined path through the action of electromagnetic field. At the receiving end, the transformer converts magnetic field energy into electrical energy and distributes it to various electrical equipment through low-voltage switchgear.
Voltage regulation and power distribution: High-voltage complete equipment regulates and controls electrical energy through distribution transformers and high-voltage switchgear to ensure voltage stability. Low-voltage complete equipment distributes electrical energy to electrical equipment through switchgear, circuit breakers and other equipment.
Protection function: Power complete equipment protects electrical equipment through protective relays, fuses and other devices to prevent damage to the equipment due to overvoltage, overload, short circuit and other conditions.
Control and monitoring: The complete equipment also includes a control system, which monitors, controls and protects the power system through an automated control system composed of electromechanical equipment, electrical components and control software.

‌Functions of specific equipment‌:

‌Switchgear‌: used to connect and disconnect circuits, including circuit breakers, disconnectors, load switches, etc. Circuit breakers are used to connect and disconnect normal load currents, and automatically trip in case of short circuit faults; disconnectors are used to isolate power supplies; load switches are used to connect and disconnect load currents. ‌Instruments‌: used to monitor and control circuit parameters, such as ammeters, voltmeters, power meters, etc., and to display parameters such as current, voltage, and power in the circuit in real time. ‌Protective devices‌: including fuses, relays, lightning arresters, etc. Fuses quickly cut off current in case of short circuit faults, relays automatically trip or send out alarm signals when the circuit is abnormal, and lightning arresters absorb lightning energy to prevent lightning damage. ‌Other auxiliary equipment‌: such as power supplies, signal lights, connectors, etc., which provide power, indicate status, connect wires, etc. to ensure the normal operation of the power system.