In distribution systems, the load has been a sudden

increase or decreases and it is like as nonlinear loads so the

load draw non-sinusoidal currents the AC mains and

causes the load harmonics and reactive power, and excessive

neutral currents that give pollution in power systems. Most

pollution problems created in power systems are due to the

nonlinear characteristics and fast switching of power

electronic devices. Shunt active filter based on current

controlled PWM converters are seen as a most viable solution.

This paper presents the harmonics and reactive power

compensation 3P4W micro-grid distribution system by

IP controlled shunt active. The technique which is used for

generate desired compensation current extraction based on

offset command instantaneous currents distorted or voltage

signals in the time domain because compensation time domain

response is quick, easy implementation and lower

computational load compared to the frequency domain.-In distribution systems, the load has been a sudden

increase or decreases and it is like as nonlinear loads so the

load draw non-sinusoidal currents　the AC mains and

causes the load harmonics and reactive power, and excessive

neutral currents that give pollution in power systems. Most

pollution problems created in power systems are due to the

nonlinear characteristics and fast switching of power

electronic devices. Shunt active filter based on current

controlled PWM converters are seen as a most viable solution.

This paper presents the harmonics and reactive power

compensation　3P4W micro-grid distribution system by

IP controlled shunt active. The technique which is used for

generate desired compensation current extraction based on

offset command instantaneous currents distorted or voltage

signals in the time domain because compensation time domain

response is quick, easy implementation and lower

computational load compared to the frequency domain.