System for Calibrating Analogue Merging Units in Absence of Synchronization Signals

• Autorzy: Cheng H.-M. , Huang Q.-F. , Ji F. , Xu Q. , Liu J. , Tian Z.

Identyfikatory

DOI

10.24425/118169

• Języki publikacji: EN

Abstrakty

EN

Synchronization signals are requisite for calibrating electrical measurement devices with digital output when using conventional calibration methods. However, since the signal sampling process of the analogue merging units (MUs) operating in an intelligent substation does not rely on external synchronization signals, accuracy calibration without the use of synchronization signals is of particular importance in order to guarantee the measurement accuracy in practical situations. So far, very little research on calibration systems independent of synchronization signals has been performed. This paper presents a design of the calibration system without dependence on synchronization signals. To verify the feasibility of the proposed design, the designed system and a conventional calibration system have been employed in testing the accuracy of the same analogue MU of a 0.2 accuracy class. The comparison of the test results shows that the differences of ratio errors are below 0.02%, and the maximum difference of phase errors is about 4′. This paper also provides a new efficient and significant calibration method which does not require any external synchronization signals.

Słowa kluczowe

EN

intelligent substation; analogue merging unit; peer-to-peer communication; calibration system; synchronization signal

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2018
• Tom: Vol. 25, nr 1
• Strony: 129--138
• Opis fizyczny: Bibliogr. 25 poz., rys., tab., wykr., wzory

Twórcy

autor

Cheng H.-M.

• State Grid Jiangsu Electric Power Company Research Institute, NO. 9, Aoti Street, Nanjing, China
• State Grid Key Laboratory of Electrical Power Metering, NO. 9, Aoti Street, Nanjing, China

autor

Huang Q.-F.

• State Grid Jiangsu Electric Power Company Research Institute, NO. 9, Aoti Street, Nanjing, China
• State Grid Key Laboratory of Electrical Power Metering, NO. 9, Aoti Street, Nanjing, China

autor

Ji F.

• State Grid Jiangsu Electric Power Company Research Institute, NO. 9, Aoti Street, Nanjing, China
• State Grid Key Laboratory of Electrical Power Metering, NO. 9, Aoti Street, Nanjing, China

autor

Xu Q.

• State Grid Jiangsu Electric Power Company Research Institute, NO. 9, Aoti Street, Nanjing, China
• State Grid Key Laboratory of Electrical Power Metering, NO. 9, Aoti Street, Nanjing, China

autor

Liu J.

• State Grid Jiangsu Electric Power Company Research Institute, NO. 9, Aoti Street, Nanjing, China
• State Grid Key Laboratory of Electrical Power Metering, NO. 9, Aoti Street, Nanjing, China

autor

Tian Z.

• State Grid Jiangsu Electric Power Company Research Institute, NO. 9, Aoti Street, Nanjing, China
• State Grid Key Laboratory of Electrical Power Metering, NO. 9, Aoti Street, Nanjing, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).