In this paper

an intelligent monitoring and record system for the complete sets equipment operation of capacitor is designed. TI’ s OMAP L138 processor with ARM and a DSP core is adopted in the system. 4 pieces of 8-Channel

16-Bit from Maxim is externally connected. At the same time

ADC chip MAX11046 is sampled to achieve simultaneous and high precision data collection of 32 communication channels. The sampling sequence is re-located by the use of linear synchronization algorithm and the result is obtained through fast Fourier Transform Algorithm（ FFT）. The present capacitance can be calculated in accordance with fundamental voltage and current passing through the capacitor. This capacitance is compared with standard capacitance and operation status of capacitor is judged based on magnitude of relative variation. In case of the capacitor exit the runtime

the residual voltage on the capacitor can also be measured. This system can guarantee the safe operation of the complete equipment of capacitor and

at the same time

locate and analyze fault of equipment. Above advantages keeps the system have wide application prospect in the electric power area.