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|Title:||Fryze Reactive Power of Trams inEeffective StochasticRrecuperation Processes|
|Authors:||Bondar, Oleh I.|
Sheikina, Olha H.
Levytska, Svitlana І.
|Publisher:||Dnipro National University of Railway Transport named after Academician V. Lazaryan|
|Citation:||Fryze Reactive Power of Trams inEeffective StochasticRrecuperation Processes [Electronic resource] / Oleh Bondar, Mikola Kostin, Andrei Mukha, Olha Sheikina, Svitlana Levytska // MATEC Web of Conferences. – 2019. – Vol. 294 : 2nd International Scientific and Practical Conference “Energy-Optimal Technologies, Logistic and Safety on Transport” (EOT-2019). – P. 1–6. – Access Mode: https://www.matec-conferences.org/articles/matecconf/pdf/2019/43/matecconf_eot18_01006.pdf (21.10.2019). – DOI: 10.1051/matecconf/201929401006.|
|Abstract:||EN: Abstract. Urban electric transport system, particularly tram systems, is not a direct current system not only in traction mode but in regenerative modes as both voltage on a collector and regenerative current are stochastic abruptly variable processes. The above- mentioned facts determine availability of Fryze’s reactive power in this system that flows from a railway substation to trams, leads to incidental losses of energy and significantly reduces its quality. So evaluation of power effectiveness of the system in electrical trams operation is impossible without determining the level of reactive power in this system. We have analytical expression of reactive power by Fryze. Numerical calculations for trams type T3D and T4D in regenerative braking modes are done. Probabilistic statistical data processing operation of reactive power expressions is done. It is determined that reactive power changes in the limit of 10…100 kilo-volt ampere reactive with mathematical expectation – 37,0 kilo-volt ampere reactive. Statistical allocation of random power values are different. Numerical calculations of incidental losses, energy of recuperation are done and they range supplementary – 20% from total losses. It is stated that coefficient of reactive power of system route of trams is exceeding permissible value 0,25.|
|Description:||O. Bondar: ORCID 0000-0003-3884-5589, М. Kostin: ORCID 0000-0002-0856-6397, A. Mukha: ORCID 0000-0002-5629-4058, O. Sheikina: ORCID 0000-0002-5367-2674|
|Other Identifiers:||DOI: 10.1051/matecconf/201929401006|
|Appears in Collections:||Статті КТЕМ|
2nd International Scientific and Practical Conference “Energy-Optimal Technologies, Logistic and Safety on Transport” (EOT-2019)
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