40-500kHz Line Traps for Serial Connection

Up to 750kV, 500KHz

Description：

Line Traps are connected in series in high-voltage and ultra-highvoltage AC power lines to prevent excessive loss of carrier signals with frequencies generally in the 40-500KHz range under various conditions in the power system and to minimize interference from adjacent carriers.

Electrical schematic：

Parameters：

What is the principle of shunt reactor voltage stabilization？

Voltage Stabilization Role:

• The voltage in a power grid can fluctuate due to various factors, such as changes in load and line impedance. When the load is light, especially at the end of long transmission lines, the capacitive effect can cause the line to generate capacitive charging currents, leading to an increase in voltage.

• A shunt reactor can absorb this excess capacitive reactive power, thereby reducing the magnitude of the voltage rise and stabilizing the grid voltage. It dynamically adjusts its reactive power output to regulate the grid voltage, keeping it within specified limits and ensuring the safe and stable operation of the power system.

Example:

• In a high-voltage transmission line, without the regulation provided by a shunt reactor, the voltage at the end of the line might rise beyond the allowable range for equipment when the load is light, potentially damaging electrical devices. By installing a shunt reactor, the voltage rise can be effectively suppressed, ensuring the normal operation of the transmission line and user equipment.