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由于DCS的可靠性不断提高,UPS冗余配置是保证控制系统平稳运行的一个必要条件。结合我公司各控制室UPS配置的实际情况和DCS冗余结构,在没有配置冗余UPS的情况下,采用两台独立的UPS双重供电或单台UPS与直接旁路双重供电的改造方案,达到了为DCS可靠供电的目的。并且,采用旁路隔离变压器与UPS一起组成隔离电源系统,有效地抑制共模干扰,改善了电源质量。
Due to the continuous improvement of DCS reliability, UPS redundant configuration is a necessary condition to ensure the smooth operation of the control system. Combined with the actual situation of our company’s control room UPS configuration and DCS redundant structure, in the absence of redundant UPS configuration, the use of two independent UPS dual power supply or single UPS and direct bypass dual power supply transformation program to achieve The purpose of reliable power supply for the DCS. And, the use of bypass isolation transformers and UPS together form an isolated power system, effectively suppress common mode interference and improve power quality.