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YZGGBC Series High-Voltage Automatic Reactive Power Compensation Device

The high-voltage automatic reactive power compensation device, based on the grid and load conditions of the 10 kV supply busbar, uses a control system to automatically switch capacitor banks in response to changes in reactive power demand, thereby achieving automatic reactive power compensation. This device provides automatic reactive power compensation, continuously tracks variations in reactive load, switches capacitor banks as needed, improves the power factor, and enhances power quality; it also features harmonic suppression, with series reactors that can be configured according to site-specific harmonic conditions to form LC resonant circuits for harmonic filtering; furthermore, it offers comprehensive protection for the capacitor bank, including overvoltage protection, undervoltage protection, overcurrent protection, zero-sequence voltage protection, and protection against unbalanced voltages in individual capacitor branches.

Category:

Complete sets of high- and low-voltage electrical equipment

Ordering phone number:

0551-6552 2999

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Case Description

Structural Features

1. The device shall be capable of long-term operation under a steady-state overvoltage of 1.1 times the rated operating voltage;

2. The device shall be capable of continuous operation under overcurrent conditions where the root-mean-square value does not exceed 1.3 times the rated current of the capacitor bank.

3. The device employs vacuum contactors for switching, enabling frequent operation;

4. Each capacitor bank is equipped with a discharge coil that reduces the residual voltage to below 50 V within 5 seconds.

5. Each capacitor bank may be protected by a relay or a microprocessor-based protection and control unit, providing overcurrent protection, voltage imbalance protection, undervoltage protection, and overvoltage protection for the bank. When a fault occurs in a particular capacitor bank, that bank can be disconnected without affecting the operation of the other banks.

6. Each individual capacitor is protected by a rupture-type fuse and a surge arrester for overvoltage protection;

7. Each group can be equipped with reactors to suppress inrush currents during switching or to mitigate harmonic amplification.

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