Operation of nuclear industry facilities
| Article Name | Analysis of Boundary Conditions of Sustainable Ferrosontic Process Flow in 24 KW Chains of Generator Voltage of NPP Power Units |
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| Authors | S.А. Baran, V.V. Nechitajlov, V.V. Krasnokutskij |
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| Address | Volgodonsk Engineering Technical Institute the branch of National Research Nuclear University “MEPhI”,
Lenin St., 73/94, Volgodonsk, Rostov region, Russia 347360
1 ORCID: 0000-0002-3232-4072
WoS Researcher ID: I-7933-2018
e-mail: bastr@rambler.ru
2 ORCID: 0000-0002-6795-2458
WoS Researcher ID: J-3646-2018
e-mail: VITIkafAE@mephi.ru
3 ORCID: 0000-0002-4498-2996
WoS Researcher ID: I-4045-2018
e-mail: leronil@mail.ru
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| Abstract | The network generator voltage is operated using with isolated neutral, and line-to-ground fault is not short circuit. Ground-fault protection more often works on signal, but in some cases shutdown network protection occurs. Analysis of the causes of power unit shutdowns by the action of ground-fault protection showed that some of them were false and occurred as a result of the appearance of stable ferroresonance processes in the circuit. Passing of ferroresonance processes is possible at a certain ratio of the parameters of the electrical circuit. The paper deals with the boundary values of the total inductance and capacitance of the circuit, in which a stable ferroresonance process can occur in the circuit, the parameters of the equivalent circuit of the NPP power unit are calculated, the oscillograms of processes in a single-phase ground fault are considered, the resistor is selected for effective grounding of the neutral. |
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| Keywords | ferroresonance, generator voltage, isolated neutral, voltage transformer, overvoltage |
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| Language | Russian |
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| References | [1] Baran S.A., Nechitajlov V.V., Krasnokutskij V.V Vozniknovenie ferrorezonansa v cepyax 24 kV generatornogo napryazheniya e`nergoblokov AE`S [Ferroerezonans Emergency in the 24 kW Generator Voltage Circuits of NPP Units] [Global Nuclear Safety]. 2018. № 2 (27). Р. 56-65 (in Russian).
[2] Kalantarov P.L., Cejtlin L.A. Raschet induktivnostej [Calculation of Inductances]. Leningrad. Pub. Energoatomizdat [Electroatomizdat]. 1986. 488 p. (in Russian).
[3] Alekseev V.G., Ziherman M.H. Ferrorezonans v setyax 6-10 kV [Ferroresonance in 6-10 kW Networks]. [Electric Stations], 1978. №1. P. 63-65. (in Russian).
[4] Jel-Hatib A.I. Ferrorezonansny`e processy` v transformatorax napryazheniya sistem e`lektrosnabzheniya i sposoby` ix predotvrashheniya [Ferroresonance Processes in Voltage Transformers of Power Supply Systems and Ways to Prevent Them]. Dissertacija na soiskanie uchenoj stepeni kandidata tehnicheskih nauk [Theses of PhD in Engineering]. Donetsk. Pub. Donskoj politehnicheskij institute [Don Polytechnic Institute]. 1992. 28 p. (in Russian).
[5] Selivanov V.N. Ispol`zovanie programmy` rascheta e`lektromagnitny`x processov ATR-EMPT v uchebnom processe [Using the Program for Calculating the Electromagnetic Processes ATP-EMPT in the Education Process] [Herald of the Bauman MSTU]. 2009. №.1. P. 107-112.
[6] Ivanickiy V.A. Modelirovanie perenapryazhenij v setyax e`lektrosnabzheniya s izolirovannoj nejtral`yu [Modeling of Overvoltages in Power Supply Systems with Isolated Neutral] [Moscow: "Virage Center" Scientific Technical Enterprise]. 1986. 488 p.
[7] Petrov O.A. Smeshhenie nejtrali pri pofazny`x otklyucheniyax i obry`vax faz v kompensirovannoj seti [The Neutral Bias for Phase-Out Tripping and Phase Failure in Compensated Network]. Elektricheskie stancii [Electric Stations]. 1972. № 9. P. 57-61. (in Russian).
[8] Halilov F.H. Eshhe raz o dugovy`x perenapryazheniyax v raspredelitel`ny`x setyax 6-35 kV [Once Again about Arc Overvoltages in Distribution Networks 6-35 kW.]. Promyshlennaja energetika [Industrial Power Engineering]. 1985. № 11. P. 37-41. (in Russian).
[9] Lihachev F.A. Zamy`kaniya na zemlyu v setyax s izolirovannoj nejtral`yu i s kompensaciej emkostny`x tokov [Ground Faults in Networks with Isolated Neutral and with Compensation of Capacitive Currents]. M. Pub. Energija [Energy]. 1971. 152 p. (in Russian).
[10] Gindullina F.A., Goldshtejn V.G., Duzolzon A.A., Halilov F.H. Perenapryazheniya v seti 6-35 kV [Overvoltages in 6-35 kW Network]. M. Pub. Energoatomizdat [Electroatomizdat]. 1989. 192 p. (in Russian).
[11] Sirota I.M., Bogachenko A.E. Zashhita ot zamy`kanij na zemlyu na storone generatornogo napryazheniya blokov generator-transformator, oxvaty`vayushhaya nejtral` generatora [Earth-Fault Protection on the Generator Voltage Side of Generator-Transformer Blocks Covering the Generator Neutral]. Kiev. Pub. IED AN USSR [IED Academy of Sciences of the Ukrainian SSR]. 1972. 21 p. (in Russian).
[12] Halilov F.H., Evdokunin G.A., Poljakov V.S. etc. Zashhita setej 6-35 kV ot perenaprjazhenij [Protection of 6-35 kW Overvoltage Networks]. Sankt-Peterburg. Pub. Energoatomizdat [Electroatomizdat]. 2002. (in Russian).
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| Papers | 69 - 79 |
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| URL Article | URL Article |
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| | Open Article |
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