Electrodynamic tests of power transformers with reactive-power compensation
- 作者: Kuvshinov A.A.1, Khrennikov A.Y.2
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隶属关系:
- Tolyatti State University
- Moscow Power Engineering Institute
- 期: 卷 88, 编号 11 (2017)
- 页面: 760-766
- 栏目: Article
- URL: https://journals.rcsi.science/1068-3712/article/view/231078
- DOI: https://doi.org/10.3103/S1068371217110104
- ID: 231078
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详细
It is shown that electrodynamic tests of power transformers are accompanied by the predominant consumption of a reactive power that is many times higher than the active-power consumption. A scheme of electrodynamic tests with longitudinal compensation of the reactive power using a capacitor bank is proposed. It allows a considerable reduction of the power that is consumed from the power-supply system. The parameters of the capacitor bank and the preliminary-charging voltage levels were determined that provide various current regimes for conducting both adjusting and actual short-circuiting experiments. The possibility of performing electrodynamic tests of power transformers with nominal powers of up to 630 MV A under the conditions of factory test centers using a controlled alternating-voltage source with a regulation range of 1.5–7.5 kV and a power of 22 MW was substantiated. Short-circuiting tests have a negative effect on the power-supply system because they are able to initiate a voltage dip with a duration of up to 0.2 s and even a dynamic-stability loss. As a result, the quality and reliability of electric-power supply of other consumers of the power-supply system deteriorate. The above negative consequences can be avoided and the required testing short-circuit current simultaneously provided via reduction of the total power consumed from the powersuppl system. In this study, the problem of the electromagnetic compatibility of an electrodynamic-test bench and a power-supply system is solved by compensating the reactive power during short-circuiting experiments.
作者简介
A. Kuvshinov
Tolyatti State University
编辑信件的主要联系方式.
Email: journal-elektrotechnika@mail.ru
俄罗斯联邦, Tolyatti, Samara oblast, 445667
A. Khrennikov
Moscow Power Engineering Institute
Email: journal-elektrotechnika@mail.ru
俄罗斯联邦, Moscow, 111250
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