【摘要】 时间同步装置作为变电站内唯一的时钟源，其自身运行状态和输出的时间同步信号是否存在异常，是关乎变电站内安全运行的前提。但由于其自身运行状态和输出信号的不可见性，如何对其进行检测是个难题，因此通过研究时间同步信号电力相关标准、现场变电站内时间同步装置授时的拓扑架构和实际应用方式，提出变电站对时异常信号辅助检测装置。通过MMS报文监测其运行状态和采集其输出的时间信号，并实现自动识别同步信号类型，进行差值比对、分析解码其携带的时间编码是否满足标准，从而对时间同步装置输出信号是否存在异常进行检测。更多还原

【Abstract】 The time synchronization device is the only clock source in the substation, and its own operating status and whether the output time synchronization signal are abnormal are the prerequisites for safe operation in the substation. However, due to its own operating state and the invisibility of the output signal, how to detect it is a difficult problem. Therefore, by studying the relevant standards of time synchronization signal power, the topology structure and practical application mode of time synchronization device timing in the field substation, the auxiliary detection device of the time abnormal signal in the substation is proposed. Its operating status is monitored by MMS messages, and its output time signal is collected. The synchronization signal type is automatically identified, the difference is compared, and whether the time code carried by the decoding is analyzed to meet the standard, so as to detect whether the output signal of the time synchronization device is abnormal.更多还原