1. Power supply cabinet: main power supply cabinet (main power cabinet) equipped with main circuit breaker
2. Outgoing cabinet: Outgoing switch cabinet of distribution system with lower level electrical equipment
3. Measuring cabinet: The meter used to collect money is used to measure and record the power supply. (It has PT, CT and watt-hour meter)
4. Bus-connection cabinet: When the system has two power supply lines and the two lines are standby to each other, it is necessary to connect the main buses of the two power sources. The switch cabinet connecting two buses is called bus-connection cabinet. Note: Bus-connection cabinet and two-way access cabinet are generally prohibited from closing at the same time.
5. PT cabinet: installation of metering device and transformer
6. Capacitor cabinet: generally connected to the main bus of the system, capacitor cabinet for centralized reactive power compensation, generally installed side by side with the incoming cabinet (system has PT cabinet, which should be a high-voltage system, low-voltage system does not have PT cabinet - PT cabinet is equivalent to a step-down transformer, only low-voltage current transformer; but capacitor cabinet is rarely used in high-voltage system, high-voltage capacitor is difficult to do, commonly in low-voltage side. Do centralized compensation.
7. Contact cabinet: the function of contact cabinet:
7.1. The contact cabinet is used to connect several rows of low-voltage cabinets with several transformers, that is, when one transformer fails, another can be used to bring other rows of low-voltage cabinets.
7.2. In terms of operation mode, under normal condition, the connection is disconnected and the two transformers operate independently. When one of them fails, the main switch is disconnected and the contact switch is closed. The load supply is guaranteed by the other.
8. Ring network cabinet (switch cabinet): Ring network cabinet is a conventional term, which originally refers to the use of load switch cabinet for ring network power supply. Now it is often used as a synonym for load switch cabinet, regardless of whether it is used for ring network power supply or not.
9. Battery cabinet: equivalent to battery, storage power supply. Battery cabinet has two functions: one is backup operation power supply; the other is main power supply for closing power supply. When the switch closes, it needs a very large current. The rectifier circuit can not meet the need of the closing coil. The battery has the characteristics of allowing short-term high current discharge, which just makes up for the shortcomings of the rectifier circuit and enables the closing circuit to operate reliably.
10. DC screen (charging screen): converting AC power into DC power. Components: Charging cabinet - Charging module - Monitoring module - Battery pack
11. Frequency conversion cabinet: The common power cabinet or control cabinet is changed from the traditional drive mode to the frequency conversion drive mode. In short: the application of frequency converter to drive the control cabinet of power plant.
12. High Voltage Switchgear:
13. Mid-cabinet: All called armored removable metal-enclosed switchgear, which has three layers of upper structure: busbar and instrument room middle layer: circuit breaker room lower layer: cable room because of the breaker in the middle layer, so called armored removal metal-enclosed switchgear, referred to as mid-cabinet.
14. Power cabinet: As far as the function is concerned, it provides power for the rotating machines such as pumps and generators.
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