CAJ | 학술논문

现阶段，北斗卫星接收机输出的1 PPS 信号通常作为智能变电站时钟同步装置的主要时钟源，但是卫星时钟源通常存在短期稳定性较差的特点，伴随有较大的随机误差。为克服这种影响，文章针对北斗信号对北斗卫星接收机的输出信号进行二次处理，利用卫星时间信号和高精度本地晶振在时间稳定性上的互补，确立了一种采用本地晶振进行替代授时的本地时钟源方案，其中利用锁相环技术对相位误差进行了测量和校正，仿真结果验证了该方案的可行性。
현계단，북두위성접수궤수출적1 PPS 신호통상작위지능변전참시종동보장치적주요시종원，단시위성시종원통상존재단기은정성교차적특점，반수유교대적수궤오차。위극복저충영향，문장침대북두신호대북두위성접수궤적수출신호진행이차처리，이용위성시간신호화고정도본지정진재시간은정성상적호보，학립료일충채용본지정진진행체대수시적본지시종원방안，기중이용쇄상배기술대상위오차진행료측량화교정，방진결과험증료해방안적가행성。
At present,the signal 1 PPS which output through Beidou satellite receiver usually work as the main clock source in smart substation.But the short-term stability of satellite clock source is usually poor and follows with a large ran-dom error.In order to overcome this effect,this paper carries on secondary design with 1 PPS signal in the Beidou satellite receiver,using the fact that satellite clock time signal and local oscillator that has high precision time stability can compen-sate each other.Finally the scheme that local clock source is replaced by a local oscillator to time is established,which uses the technology of the phase-locked loop to measure and correct the phase error ,and simulation results verify the feasibility of the scheme.