基于5G边缘计算的组网传输分散采样值光纤差动保护同步测试分析  

Analysis of Synchronous Test of Distributed Sampling Value Optical Fiber Differential Protection Based on 5G Edge Computing

作　　者：曹玉文 CAO Yuwen(Hebei Radio and Television Network Group Qinhuangdao Co.,Ltd.,Hebei 066001,China.)

机构地区：[1]河北广电网络集团秦皇岛有限公司,河北066001

出　　处：《电子技术（上海）》2023年第6期42-45,共4页Electronic Technology

摘　　要：阐述光纤差动保护中,当同步误差超过一定限值时,会引起误动与拒动,为此设计一个组网传输分散采样值光纤差动保护同步测试方法。直接对各组网两侧传输分散采样,标记数据的序列号,分析差动最佳角度;基于第五代移动通信技术5G边缘计算,利用同步电流法处理同步电流统一向量,信息同步传输,为两个距离较近的变电站同时发射出信号样本给予相同的电流;构建信号通过的时间的表达式,计算网络速度变化与采样数量带来的时间差,利用时间差的取值范围判断故障的部位,实现光纤差动保护同步测试。实验结果表明,该方法在稳态幅值、稳态相位、静态幅值、静态相位、本侧电流幅值与对侧电流幅值六个指标对比上,测试准确性都较高,满足方法的设计需求。This paper explains misoperation and rejection in optical fiber differential protection,when the synchronization error exceeds a certain limit.Therefore,a synchronization test method for optical fiber differential protection with network transmission and distributed sampling value is designed.Distribute sampling directly on both sides of the transmission network,mark the serial number of the data,and analyze the best differential angle.Based on 5th Generation Mobile Communication Technology 5G edge computing,the synchronous current method is used to process the unified vector of synchronous current,and the information is transmitted synchronously to give the same current to the signal samples sent by two substations that are close to each other at the same time.The expression of signal passing time is constructed to calculate the time difference caused by the change of network speed and the number of samples.The value range of the time difference is used to determine the fault location and realize the synchronous test of optical fiber differential protection.The experimental results show that the test accuracy of the method is high in comparison with the six indicators of steady state amplitude,steady state phase,static amplitude,static phase,local current amplitude and opposite current amplitude,meeting the design requirements of the method.

关 键 词：5G边缘计算 组网传输 分散 采样值 光纤 同步 

分 类 号：TM773[电气工程—电力系统及自动化]