Capacitive reactive power (current vector leads voltage, such as capacitors, cable transmission and distribution lines, and power electronics leading control)
Release time:
2023-05-15 14:42
Source:
Total current and load current detection, used for reactive power calculation and display.
The reactive power calculation and control unit completes reactive current calculation, sending on/off commands, and parameter settings.
The compensation control unit (power unit), including thyristors and triggering, unit management board, internal current detection, completes the switching board commands, switching on or off the compensation path, and parameter settings.
Capacitors, complete compensation.
Fan and relay section.
Multi-channel detection control board, completes multi-channel current detection and protection. This board is an optional component depending on the device configuration.
Depending on the device capacity and compensation requirements, it can be divided into a basic cabinet and an expansion cabinet. The expansion cabinet supplements the capacity of the basic cabinet. The basic cabinet can perform compensation independently, while the expansion cabinet must be used in conjunction with the basic cabinet.
Functions: Improve power factor to above 0.9 to avoid reactive power penalties; stabilize grid voltage to meet national standards or user requirements; reduce transformer power supply capacity; reduce power supply system losses, saving energy.
Basic principle: After the load is running, reactive current will reciprocate between the load and the power grid. At this time, the single-chip microcomputer of the compensation device detects the magnitude of the current inductive reactive current and immediately issues a command to switch in the corresponding capacitive current to offset the inductive reactive power, improving the power grid's power supply capacity and ensuring the reliable operation of electrical equipment.
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