通过对同步电动机励磁控制回路的检查、分析，测试发现原励磁回路中的功率因数变送器施工接线和DCS相应配置存在问题。经过原因分析查找，解决了励磁自动控制极为不稳异常现象，满足了设备正常运行需要。%Problems in the wiring of power factor transducer in original excitation circuit and corresponding DCS configuration were found during inspection, analysis and testing of synchronous motor excitation control circuit. Through cause analysis the abnormality of ex-tremely unstable excitation automatic control was solved, meeting the requirement of normal e-quipment operation.
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