The Measuring Principle and Method of Telemetering Module of the Remote Terminal Unit

Author

Shang, Liqun

Author_Institution

Sch. of Electr. & Control Eng., Xi´´an Univ. of Sci. & Technol., Xian, China

fYear

2010

fDate

25-27 June 2010

Firstpage

4433

Lastpage

4435

Abstract

In electric power system, remote terminal unit (RTU) are widely used as a very important part of supervision control and data acquisition system (SCADA). One important function of RTU is telemetering. There are two methods to measure AC quantity in telemetering module of RTU: DC sampling method and AC sampling method. In this paper, the principle and method of AC sampling, the hardware and software design of RTU telemetering module are introduced, the error of AC sampling method is analyzed, and a method of reducing the error is given.

Keywords

SCADA systems; measurement errors; power system measurement; sampling methods; telemetry; AC sampling method; DC sampling method; RTU telemetering module; SCADA; electric power system; measurement error; measurement principle; remote terminal unit; supervision control and data acquisition system; Computers; Current measurement; Frequency measurement; Phase measurement; Power measurement; Sampling methods; Voltage measurement; AC sampling method; remote terminal unit; synchro-error; telemetering module; truncation error;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Control Engineering (ICECE), 2010 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-6880-5

Type

conf

DOI

10.1109/iCECE.2010.1078

Filename

5630882