| 影响遥测精度的因素分析 |
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| 引用本文： | 李智勇. 影响遥测精度的因素分析[J]. 电力自动化设备, 2006, 26(9): 94-97 |
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| 作者姓名： | 李智勇 |
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| 作者单位： | 云南电网公司,德宏分公司调度中心,云南,德宏,678400 |
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| 摘 要： | 影响遥测精度的因素有很多,如电压互感器、电流互感器的精度,采样频率,模数转换位数等。在变电站自动化系统中,各种型号的测控装置对遥测系数的处理方法不尽相同,以SL300监控系统为例,就其在系数处理上的问题,用数学的方法分析了系数精度不够及满码值设置不当对遥测精度的影响。提出只有系数小数位数足够,且满码值选择恰当,才能最大限度地减小换算误差。
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| 关 键 词： | 数据形成 精度 数据后处理 工程量 系数 误差 |
| 文章编号： | 1006-6047（2006）09-0094-04 |
| 收稿时间： | 2006-03-08 |
| 修稿时间： | 2006-03-08 |
Factors affecting telemetry accuracy |
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| LI Zhi-yong. Factors affecting telemetry accuracy[J]. Electric Power Automation Equipment, 2006, 26(9): 94-97 |
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| Authors: | LI Zhi-yong |
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| Affiliation: | Yunnan Power Grid Co.,Dehong Sub-company Dispatch Center,Dehong 678400,China |
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| Abstract: | There are many factors affecting telemetry accuracy,such as accuracy of voltage /current transformer,sampling frequency,analog-digital conversion bits and so on.In substation automation system,different monitoring and control equipment has its own processing method of telemetry coefficient.Taking SL 300 supervisory system as an example,the influence of the coefficient processing on telemetry accuracy is analyzed with mathematics.The coefficient accuracy is inadequate and the full code value is set improperly.Only when the decimal fraction digit of the coefficient is enough and the full code value is selected properly,the conversion error can be reduced furthestly. |
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| Keywords: | data formation accuracy data post-processing engineering unit coefficient error |
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