Method for digital processing of a three-phase signal for extraction symmetric components
https://doi.org/10.37493/2307-907X.2022.3.1
Abstract
The paper proposes to the development of methods for assessing the level of current and voltage asymmetry in three-phase electrical networks. The main direction of research in this work is the creation of a simple hardware-oriented method for extracting symmetrical components from an asymmetric three-phase system of vectors. The paper proposes a new algorithm for digital signal processing of a three-phase system of voltages and/or currents, which makes it possible to implement the function of a digital filter of symmetrical components. The algorithm is based on the results of synchronous measurements of instantaneous voltages and/or currents. There is no need in the algorithm to determine the angular ratios of the three-phase system vectors. In addition, the algorithm is freed from the need to use complex numbers when calculating symmetric components. The result of the algorithm is oscillograms of symmetrical components, presented as sets of discrete samples. The algorithm is based on the simplest arithmetic operations with instantaneous values of synchronously measured parameters of a three-phase system. The proposed algorithm makes it possible to reduce the requirements for the computing power of measuring instruments without losing the accuracy of estimating the vectors of symmetrical components. The algorithm can be used to implement on its basis digital filters of pozitive, negative or zero-sequence voltages and/or currents.
About the Authors
A. М. Petrov
NCFU
Russian Federation
Russian Federation
Petrov Anton, Ph. D. in Technical Sciences, Associate Professor of the Department Automated Electric Power Systems and Power Supply
D. A. Kostyukov
NCFU
Russian Federation
Russian Federation
Kostyukov Dmitry, senior lecturer of the Department Automated Electric Power Systems and Power Supply
References
1. Parsent’ev, O. S. Analiz dopolnitel’nyh poter’ elektroenergii v raspredelitel’nyh elektricheskih setyah, obrazovannyh nesimmetriej raspredeleniya nagruzki (Analysis of Additional Electricity Losses in Distribution Electric Networks, Formed by Unbalance in Load Distribution) / O. S. Parsent’ev // Vestnik Luganskogo nacional’nogo universiteta imeni Vladimira Dalya. – 2019. – № 12(30). – S. 136–151.
2. Gromkov, A. S. Vliyanie kachestva elektroenergii na rabotu elektropriemnikov i sposoby povysheniya pokazatelei kachestva elektroenergii (The influence of power quality on the operation of power receivers and ways to improve power quality indicators)/ A. S. Gromkov // Ekonomika i socium. – 2020. – № 4(71). – S. 253-256.
3. Petrov, A. V. Razrabotka inzhenernyh metodov ocenki nesimmetrii napryazhenij v setyah 10–0,4 kV : spetsial’nost’ 05.14.02 Elektricheskie stancii i elektroenergeticheskie sistemy (Development of engineering methods for assessing voltage unbalance in 10–0.4 kV networks) : dissertatsiya na soiskanie uchenoj stepeni kandidata tehnicheskih nauk / Petrov Anton Vasil’evich. – Stavropol’, 2003. – 200 s.
4. Zhezhelenko, I. V. Ocenka poter’ elektricheskoj energii, vyzvannyh snizheniem ee kachestva (Assessment of electrical energy losses caused by a decrease in its quality) / I. V. Zhezhelenko, V. V. Nesterovich // Vestnik Priazovskogo gosudarstvennogo tehnicheskogo universiteta. Seriya: Tehnicheskie nauki. – 2017. – № 34. – S. 119–126.
5. Bychkov, E. V. Novye vozmozhnosti maloj energetiki na principah SmartGrid (New opportunities for smallscale power generation based on SmartGrid principles) / E. V. Bychkov, A. B. Vasenin, O. V. Kryukov // Avtomatizatsiya i IT v energetike. – 2019. – № 10(123). – S. 40–50.
6. Alinov, M. Sh. Smartgrid – umnaya energetika: perspektivy i bar’ery (Smartgrid – smart energy: prospects and barriers) / M. Sh. Alinov, A. G. Alinov // Rossijskie regiony v fokuse peremen : sbornik dokladov XIII Mezhdunarodnoj konferencii, Ekaterinburg, 15–17 noyabrya 2018 goda. – Ekaterinburg : Izd-vo UMTs UPI, 2019. – S. 111–115.
7. Kononov, Yu. G. Perspektivy primeneniya intellektual’nyh informacionno-izmeritel’nyh sistem v elektricheskih setyah (Prospects for the use of intelligent information-measuring systems in electrical networks) / Yu. G. Kononov, R. N. Lipskii // Elektroenergetika glazami molodezhi. – 2020 : materialy ХI Mezhdunarodnoj NTK, Stavropol’, 15–17 sentyabrya 2020 goda : v 2 t. – Stavropol’ : Severo-Kavkazskij federal’nyj universitet, 2020. – S. 46–57.
8. Chuprova, I. A. Osobennosti vnedreniya smart metering (Features of implementing smart metering) / I. A. Chuprova // Elektroenergetika. Energiya-2019 : materialy konferencii, Ivanovo, 02–04 aprelya 2019 goda : v 7 t. – Ivanovo : Ivanovskij gosudarstvennyj energeticheskij universitet im. V. I. Lenina, 2019. – S. 34.
9. Baranova, K. S. Intellektual’naya sistema smart metering i ASKUE (Intelligent smart metering system and ACEMS) / K. S. Baranova, A. V. Gorban’ // Molodezhnyj vestnik IrGTU. – 2018. – T. 8. – № 1. – S. 7.
10. Troickij, A. I. Obobshchenie ponyatiya nesimmetrichnye nagruzki s cel’yu ih vnutrennego simmetrirovaniya po kriteriyu snizheniya poter’ moshchnosti (Generalization of the concept of asymmetric loads for the purpose of their internal balancing according to the criterion of reducing power losses) / A. I. Troickij, S. S. Kostinskij // Izvestiya vysshikh uchebnykh zavedenii. Elektromekhanika. – 2013. – № 1. – S. 126–131.
11. Kostyukov, D. A. Ocenka dolevogo vklada potrebitelya v nesimmetriyu napryazhenii po obratnoj posledovatel’nosti v setyah s izolirovannoj neitral’yu (Estimation of the share contribution of the consumer to the voltage unbalance in reverse sequence in networks with isolated neutral) / D. A. Kostyukov, A. V. Petrov, A. E. Kushch // Vestnik Severo-Kavkazskogo federal’nogo universiteta. – 2018. – № 5(68). – S. 7-18.
12. Kostyukov, D. A. Ocenka vklada potrebitelya v nesimmetriyu napryazhenii po nulevoi posledovatel’nosti v tochke obshchego prisoedineniya (Estimation of the consumer’s contribution to the voltage asymmetry by zero sequence at the point of common connection) / D. A. Kostyukov // Vestnik Severo-Kavkazskogo federal’nogo universiteta. – 2018. – № 6(69). – S. 24–34.
13. Analiz metodov ocenki dolevogo vklada potrebitelej v uroven’ nesimmetrii napryazhenij v tochke obshchego prisoedineniya (Analysis of methods for assessing the share contribution of consumers to the level of voltage asymmetry at the point of common connection) / D. A. Kostyukov, A. V. Petrov, A. E. Kushch, A. A. Vasil’ev // Aktual’nye problemy inzhenernyh nauk : materialy VII (64) ezhegodnoj NPK prepodavatelej, studentov i molodyh uchenyh Severo-Kavkazskogo federal’nogo universiteta «Universitetskaya naukaregionu», Stavropol’, 03–29 aprelya 2019 goda. – Stavropol’ : Izd. dom «Tesera», 2019. – S. 50–53.
14. Bessonov, L. A. Teoreticheskie osnovy elektrotehniki. Elektricheskie cepi : v 2 ch.: uchebnik (Theoretical foundations of electrical engineering. Electric circuits) / L. A. Bessonov, V. L. Bessonov. – CH. 1 – 12-e izd., ispr. i dop. – Moskva : Yurait, 2016. – 364 s. – (Bakalavr. Akademicheskii kurs). – ISBN 978-5-9916- 9301-1.
15. Kobozev, V. A. Raschet kompleksnyh pokazatelej nesimmetrii napryazhenij v elektricheskih setyah (Calculation of complex indicators of voltage asymmetry in electrical networks) / V. A. Kobozev, P. V. Kovalenko // Izvestiya vysshikh uchebnykh zavedenij. Elektromekhanika. – 2004 – № 4. – S. 50–53.
Review
For citations:
Petrov A.М., Kostyukov D.A. Method for digital processing of a three-phase signal for extraction symmetric components. Newsletter of North-Caucasus Federal University. 2022;(3):7-15. (In Russ.) https://doi.org/10.37493/2307-907X.2022.3.1
Views:
193
Email this article 