CAJ | 학술논문

传统的对时方式已经不能满足目前变电站对于对时精度的要求。本文通过对脉冲对时、编码对时和网络对时等几种同步对时技术进行研究，对其对时精度、组网方式等进行了比较，同时根据数字变电站站控层、间隔层和过程层的对时可靠性及精度的要求差异，综合考虑建设成本、日常维护等因素，提出了 SNTP +IEEE1588网络同步方案，并指出了变电站同步对时技术的发展趋势。
전통적대시방식이경불능만족목전변전참대우대시정도적요구。본문통과대맥충대시、편마대시화망락대시등궤충동보대시기술진행연구，대기대시정도、조망방식등진행료비교，동시근거수자변전참참공층、간격층화과정층적대시가고성급정도적요구차이，종합고필건설성본、일상유호등인소，제출료 SNTP +IEEE1588망락동보방안，병지출료변전참동보대시기술적발전추세。
At present, the traditional synchronization technology can ’t meet the substation’s requirement for synchro-nization precision.This paper studied the time synchronization technology such as pulse synchronization , coding time and network time synchronization , and compared their time precision and network mode.And meanwhile according to the different requirements for the synchronization reliability and precision of station level , bay level and process level of the digital substation and considering the construction cost , daily maintenance and other factors , this paper pro-posed the SNTP +IEEE1588 network synchronization scheme , and pointed out the development trend of the substation time synchronization technology.