分析了发电厂仪表信号在采集、传输、接收过程中所受到干扰的种类及产生途径。并根据差模干扰、共模干扰产生的原理，从仪表系统设计、现场施工、设备制造要求等方面提出有效的抗干扰措施。%The paper analyzes the interference's class and path during instrument signal acquisition, transmission and reception in power plant. According as the principle of differential -mode interference and common -mode interference, the article brings forward availability anti-interference measures in instrument design, construction and device manufacture.
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