Power capacitor plays an important role in the aspects of improving power factor

voltage quality

transmission capacity of power line and stability etc. and

at the same time

is an important equipment of HV DC converter station

therefore the test of power capacitor is of particularly important. In the study of power capacitor test

bridge type harmonic current injection is a kind of method with most attention. In this paper

programmable harmonic power monitoring system based on PLC and touch screen is designed for monitoring harmonic power in the bridge type whole harmonic current injection method. The experiment shows that the system operation is simple

practical and can achieve data monitoring effectively.