The EMC design of electromagnetic environment monitor with three-dimensional high accuracy

摘要

With the rapid development of power transmission engineering, the measurement demands of electromagnetic environment are increasing. Since the electromagnetic environment measurement signal changes in a wide range, it has high measurement accuracy requirements for monitor. Therefore the EMC design of electromagnetic environment monitor is of great significant. At present, this kind of instrument mostly depends on foreign imports. The price is expensive and it has strong dependence on foreign technology. In this paper, a design of power frequency electromagnetic environment monitor is presented and it focus on suppressing the internal electrical magnetic interference generated by monitor itself with electromagnetic compatibility technology. Specifically, the structure designing, selection of cables and components as well as PCB layout are considered. The experimental results show that the design of electromagnetic environment monitor meets the demand of monitoring on power transmission engineering electromagnetic environment. It can provide data support for environmental assessment and completion acceptance of transformation project.