高频保护专用收发信机的电磁兼容问题

EMC PROBLEM OF THE TRANSCEIVERS SPECIALLY USED FOR HF PROTECTION

随着微机型保护应用的推广和普及，电磁兼容问题引起人们更多的关注，由于环境干扰信号的突发性，传播途径的多重性，给问题的认识解决带来一定的困难。本文依据干扰信号的传播特点，从工作环境分析入手，将影响收发信机正常工作的诸多因素综合归类，以期对收发信机的干扰问题有清楚的认识。最后，提出改进收发信机抗干扰性能的两点措施。

Along with the extensive application of microprocessor-based protections,more people show interest in the EMC(electrc-magnetic compatibility problem.Due to the sudden of disturbance signal and the multiplicity of propagation path,to understand and solve the problem is difficult.This paper bases the propagation feature of the disturbance signal and the analysis of working environment to sort the factors which have impact on normal operation of th transceivers,so as to have a clear understanding of the problem.Finally two measures to improve the anti-interference performance of the transceiver are presented.