Construction of a method to protect a traction electric network against shortcircuit currents, based on the new attribute
DOI:
https://doi.org/10.15587/1729-4061.2019.186485Keywords:
short circuit, feeder voltage, speed of voltage change, relay protection, duration of voltage drop, selective protectionAbstract
All types of relay protection are based on comparing the values for certain attributes under a system's normal and emergency operational modes. A new attribute for defining the emergency mode in a direct current traction electricity supply system has been proposed, namely, the speed of voltage drop in the feeder of a traction substation. It is known that at a short circuit in the traction network, its voltage is reduced. Its sharpest, almost linear, decrease is observed, first, at the first moment of the emergency transition process, and, second, at a short circuit site and at points near it. Therefore, the steepness of the front of such a reduction in a feeder voltage could become an attribute of short circuit. A given attribute makes it possible to determine the type of short circuit based on a distance from the power source. In addition, we have proposed the circuit solutions for implementing a system of protection based on this attribute. Three options for building such protection systems have been considered. A first option implies using a RC filter. A second variant employs a pulse transformer. A third option is to use a bridge scheme. Each scheme has its advantages and disadvantages; however, modern electronics and digital technology make it possible to implement any of them. In the future, this would facilitate the construction of a selective protection (in terms of distance) from short circuit. To this end, one needs to use as many protection kits as how many points along a traction line must be monitored. Such a system is also easily implemented by software using microprocessor equipment.
The practical results from our study at a section of traction power supply of the Dnieper Railroad make it possible to assert that the proposed technique for determining short circuits is rather effective. It could be used as an additional (backup) system in general relay-protective hardware. That would improve the reliability of power supply systems for traction networks. Overall, the considered technique for determining short circuits could be used in any DC power systemReferences
- Yatsko, S., Sytnik, B., Vashchenko, Y., Sidorenko, A., Liubarskyi, B., Veretennikov, I., Glebova, M. (2019). Comprehensive approach to modeling dynamic processes in the system of underground rail electric traction. Eastern-European Journal of Enterprise Technologies, 1 (9 (97)), 48–57. doi: https://doi.org/10.15587/1729-4061.2019.154520
- Wiszniewski, A., Solak, K., Rebizant, W., Schiel, L. (2018). Calculation of the lowest currents caused by turn-to-turn short-circuits in power transformers. International Journal of Electrical Power & Energy Systems, 95, 301–306. doi: https://doi.org/10.1016/j.ijepes.2017.08.028
- Alluhaidan, M., Almutairy, I. (2017). Modeling and Protection for Low-Voltage DC Microgrids Riding Through Short Circuiting. Procedia Computer Science, 114, 457–464. doi: https://doi.org/10.1016/j.procs.2017.09.024
- Zheng, T., Liu, X., Huang, T. (2019). Novel protection scheme against turn-to-turn fault of magnetically controlled shunt reactor based on equivalent leakage inductance. International Journal of Electrical Power & Energy Systems, 112, 442–451. doi: https://doi.org/10.1016/j.ijepes.2019.05.002
- Tartaglia, M., Mitolo, M. (2010). An Analytical Evaluation of the Prospective I(2)t to Assess Short-Circuit Capabilities of Cables and Busways. IEEE Transactions on Power Delivery, 25 (3), 1334–1339. doi: https://doi.org/10.1109/tpwrd.2009.2037505
- Sanchez-Sutil, F., Hernández, J. C., Tobajas, C. (2015). Overview of electrical protection requirements for integration of a smart DC node with bidirectional electric vehicle charging stations into existing AC and DC railway grids. Electric Power Systems Research, 122, 104–118. doi: https://doi.org/10.1016/j.epsr.2015.01.003
- Mahmoudian Esfahani, M., Mohammed, O. (2020). An intelligent protection scheme to deal with extreme fault currents in smart power systems. International Journal of Electrical Power & Energy Systems, 115, 105434. doi: https://doi.org/10.1016/j.ijepes.2019.105434
- Peres, L. M., Silva, K. M. (2019). Power transformer protection using an instantaneous-current-value negative sequence differential element. International Journal of Electrical Power & Energy Systems, 108, 96–106. doi: https://doi.org/10.1016/j.ijepes.2018.12.033
- Abdali, A., Mazlumi, K., Noroozian, R. (2019). High-speed fault detection and location in DC microgrids systems using Multi-Criterion System and neural network. Applied Soft Computing, 79, 341–353. doi: https://doi.org/10.1016/j.asoc.2019.03.051
- Caramel, C., Austin, P., Sanchez, J. L., Imbernon, E., Breil, M. (2006). Integrated IGBT short-circuit protection structure: Design and optimization. Microelectronics Journal, 37 (3), 249–256. doi: https://doi.org/10.1016/j.mejo.2005.09.028
- Jia, Q., Dong, X., Mirsaeidi, S. (2019). A traveling-wave-based line protection strategy against single-line-to-ground faults in active distribution networks. International Journal of Electrical Power & Energy Systems, 107, 403–411. doi: https://doi.org/10.1016/j.ijepes.2018.11.032
- Mikhalichenko, P., Nadtochii, V., Nadtochiy, A. (2019). Defining energy indicators for detecting short circuits in a dc electric traction system. Eastern-European Journal of Enterprise Technologies, 5 (8 (101)), 6–14. doi: https://doi.org/10.15587/1729-4061.2019.180796
- Mykhalichenko, P. Ye. (2012). Results of Experimental Research of the Modes of Short Circuit in a Traction Network. Visnyk DNUZT, 41, 81–85.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2019 Pavel Mikhalichenko, Ivan Biliuk, Olexandr Kyrychenko, Victor Nadtochii, Anatoly Nadtochiy
This work is licensed under a Creative Commons Attribution 4.0 International License.
The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.
A license agreement is a document in which the author warrants that he/she owns all copyright for the work (manuscript, article, etc.).
The authors, signing the License Agreement with TECHNOLOGY CENTER PC, have all rights to the further use of their work, provided that they link to our edition in which the work was published.
According to the terms of the License Agreement, the Publisher TECHNOLOGY CENTER PC does not take away your copyrights and receives permission from the authors to use and dissemination of the publication through the world's scientific resources (own electronic resources, scientometric databases, repositories, libraries, etc.).
In the absence of a signed License Agreement or in the absence of this agreement of identifiers allowing to identify the identity of the author, the editors have no right to work with the manuscript.
It is important to remember that there is another type of agreement between authors and publishers – when copyright is transferred from the authors to the publisher. In this case, the authors lose ownership of their work and may not use it in any way.
