混合时钟同步技术在船舶电力系统同步相量测量中的应用研究  

Research on Hybrid Clock Synchronization Technology Used in Phasor Measurement of Ship Power System

作　　者：王黎明[1] 闫晓玲[1] 卜乐平[1] 

机构地区：[1]海军工程大学电气与信息学院,湖北武汉430033

出　　处：《计算技术与自动化》2014年第2期52-56,共5页Computing Technology and Automation

基　　金：国家自然科学基金项目(61101206)

摘　　要：针对船舶电力系统相对于陆地广域电力系统的不同特性,分析传统时钟同步方法对于船舶同步向量测量单元(SPMU)的局限性,采用一种基于IEEE1588协议的卫星时钟同步与局域网时钟同步相结合的混合时钟同步技术实现SPMU的时钟同步,通过实验对同步偏差性能进行测试,结果表明时钟同步偏差维持在±500ns以内,可以满足电力系统对电力参数测量的同步精度要求。Contrast to terrestrial wide-area power system,the ship has many different characteristic; as a result,traditional clock synchronization method is not fit for ship＇ s power system.According to the problem,the article proposed a method based on IEEE1588 protocol for the clock synchronization scheme of SPMU,this method mixes satellite clock synchronization and local-area network clock synchronization.By synchronization offset capability experiment using the new method,it has been confirmed that its offset is less than ＋ 500n,which could meet the accuracy requirement of power system synchronization parameter measurement.

关 键 词：电力系统 时钟同步 SPMU 

分 类 号：U665[交通运输工程—船舶及航道工程]