摘要
讨论了基于全球卫星定位系统（ＧＰＳ）高精度定时技术的电力系统全网同步测量的实时数据通信问题。分析、比较了电力系统五种数据传输方式的通信质量、速率和时延等指标；给出了以安全监视和稳定控制为目的的同步测量系统结构、子站功能框图以及通信速率和时延的计算公式，并举例说明一条三相线路（三个电压、三个电流、一个频率）在单周波处理时，其通信速率分别为２７５ｂｓ－１（用于稳态监视）和７８２１ｂｓ－１（用于稳定预测和控制）；文中最后讨论了主站局域网（ＬＡＮ）与远方数据通信的三种实现方式：①远程异步路由器，②异步通信服务器。
? This paper discusses the real time data communication problems in the GPS based power systems synchronization measurements. First, the present power system data transmission situation is analyzed, and comparisons are made among the five communication ways with respect to the quality, data rate and time delay index. The synchronization measurement system configuration, sub station functional diagram, and two formulae are then given and described in detail, with an example of a transmission line( U a , U b , U c ; I a , I b , I c ′; f r) single cycle sampling and pocessing, resulting in the data rate of 275 b·s -1 for the steady state surpervision and 7.821 b·s -1 for the stability prediction and control. Finally discussed are the three ways for the center master station and remote sub stations communication: netware asynchronous remote router(NARR), asynchronous communication server (ACS), netware access server(NAS).
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1997年第7期82-85,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金
关键词
同步测量
数据通信
GPS
电力系统
监测系统
synchronization measurement
data communication
global positioning system timing
