Power capacitor branch structure with harmonic protection function

The utility model discloses a power capacitor branch structure with a harmonic protection function. The power capacitor branch structure comprises an isolating switch, a circuit breaker, a current transformer, a reactive power compensation device, a series reactor and a harmonic analysis control module, and the isolating switch is used for switching on and switching off a circuit, and acts on the circuit breaker to trip after the harmonic analysis control module detects that the harmonic index of the capacitor branch is greater than a set value, and the series reactor is connected to the capacitor branch, so that the influence of harmonic waves on the capacitor is solved. Through reasonable composition and connection, the reactive compensation device can be used for solving the problem of harmonic waves generated when reactive compensation is carried out on a circuit, ensures safe and reliable operation of a power capacitor and a power grid, and is beneficial to enhancing the stability of a power system, impr