Effect of harmonic distortion on electric energy meters of different metrological principles
Illia DIAHOVCHENKO1(), Vitalii VOLOKHIN1, Victoria KUROCHKINA1, Michal ŠPES2, Michal KOSTEREC2
1. Department of Electrical Power Engineering, Sumy State University, Sumy 40037, Ukraine 2. Department of Electric Power Engineering, Technical University of Košice, Košice 04200, Slovakia
This paper deals with the errors of electric energy metering devices as a result of distortions in the shape of the curves of voltage and current load. It is shown and proved that the errors in energy measurements depend on the design and the algorithms used in electricity meters. There are three main types of metering devises having different principles: inductive (electro-mechanical), electronic static, and digital electronic (microprocessor). Each of these types has its measuring features. Some devices take into account all the harmonic distortions and the constant component which occur in the network while others measure the power and energy values of the fundamental harmonic only. Such traits lead to the discrepancies in the readings of commercial electric energy meters of different types. Hence, the violations in the measurement system unity occur, and a significant error can be observed in the balance of transmitted/consumed electric energy.
DIAHOVCHENKO Illia, VOLOKHIN Vitalii, KUROCHKINA Victoria, ŠPES Michal, KOSTEREC Michal. 谐波畸变对不同计量原理电能表的影响[J]. Frontiers in Energy, 2019, 13(2): 377-385.
Illia DIAHOVCHENKO, Vitalii VOLOKHIN, Victoria KUROCHKINA, Michal ŠPES, Michal KOSTEREC. Effect of harmonic distortion on electric energy meters of different metrological principles. Front. Energy, 2019, 13(2): 377-385.
Digital meters that calculate power on the 1st harmonic using the Fourier transform
(34), (27)
1653.7170
2858.2766
3302.2000
3302.2000
0
(34), (35)
1653.7170
2857.0075
3301.1016
3302.2000
85.1665
Digital meters that calculate power on the first three harmonics using the Fourier transform
(34), (27)
1667.1810
2870.3063
3319.3600
3319.3600
0
(34), (35)
1667.1810
2867.5576
3316.9834
3319.3600
125.5863
Tab.2
Fig.2
Fig.3
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