Instantaneous Value Sampling AC-DC Converter and its Application in Power Quantity Detection

In order to speed up the response of the power quantity detection, to adopt instantaneous value sampling method make up the AC-DC converter that use in power quantity detection system is researched. There, the DC voltage is obtained by fixed-point sampling each cycle of the power quantity. The feasibility is proved by the simulation analysis. Composing the power quantity transducer with it, the response time may reduce a number magnitude compared to the traditional power quantity transducer, composing the power data acquisition system with it, the software architecture can be simplified effectively. The power quantity transducer and the power data acquisition system composed in this way are promising to be used in the power system control and protection where demanding the response is rapid.