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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。 |
| 关键词: 数据形成,精度,数据后处理,工程量,系数,误差 |
| DOI： |
| 分类号:TP873 |
| 基金项目: |
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| Factors affecting telemetry accuracy |
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LI Zhi-yong
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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. |
| Key words: data formation,accuracy,data post-processing,engineering unit,coefficient,error, |
