The reactor in 220kV, 110kV, 35kV, 10kV and [1] 500kV power grid is used to absorb the reactive power of the charging capacity of the cable line. The operating voltage can be adjusted by adjusting the number of shunt reactors. A variety of functions of the high voltage Sutton Si shunt reactor to improve the operation status of the reactive power of the power system are included:

(1) the capacitive effect of light load or light load line to reduce the power frequency transient overvoltage.

(2) improve the voltage distribution of long transmission line.

(3) to make the reactive power in the line of light load as far as possible, to prevent reactive power flow and reduce the power loss on the line.

(4) to reduce the power frequency steady-state voltage on the high voltage bus in parallel with the system, so that it is convenient for the generator to coordinate.

(5) to prevent the self excitation resonance generator with long lines possible.

(6) when the reactor is used for neutral point through small reactance grounding device, it can also be used for small reactor compensation line phase and phase capacitance, in order to speed up the potential for automatic off, easy to use.

Effect

1, reduce the power frequency voltage rise value.

2, reduce operating over voltage.

3, avoid the generator no-load long line appears self excitation overvoltage

4, is conducive to single phase.