A generator of aperiodic current pulses of artificial lightning with a rationed temporal form of 10 μs/350 μs with an amplitude of ±(100–200) kA

Баранов, М. И.; Koliushko, G. M.; Кравченко, В. И.; Rudakov, S. V.

doi:10.1134/s0020441215060032

Cited by 11 publications

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“…The modulus of the numerical value of the total electric charge q Σ ≈55.6 C in the considered lightning cloud obtained in accordance with (1) completely corresponds to the normalized charge q L =(50±10) C for a short lightning strike with a pulsed discharge aperiodic current of a temporal shape 10 μs/350 μs to ground technical facilities that satisfy III-IV lightning protection levels according to the requirements of the International Standard IEC 62305-1:2010 [5,6]. In addition, we indicate that the used numerical value of the averaged volume charge density of the lightning cloud under investigation, defined as σ V ≈ q 0 N 0 ≈ −1.39•10 -8 C/m 3 , corresponds to known experimental data for the mean value of the space charge density in a thunderstorm cloud [1 , 2].…”

Section: приведены результаты расчетной оценки основных энергетическиmentioning

confidence: 91%

“…At U 0 ≈ -506 MV and t mL ≈ 11.47 μs, the calculated value of the amplitude of the lightning current for the investigated case according to (10) will be approximately I mL ≈ -262.1 kA. The obtained quantitative values for t mL and the amplitude I mL of the current in the discharge channel of the assumed thunderstorm cloud to earth are well correlated with the ATPs of the pulse current characteristic for short strokes of the linear lightning to ground objects satisfying the I level of their lightning protection according to the stringent requirements of the International Standard IEC 62305-1:2010 [5,6]. As for the duration τ p of the aperiodic lightning current pulse at the level 0.5 I mL , for our case it is approximately equal to τ p ≈ 0,7R k С E ≈ 142.4 μs.…”

Section: приведены результаты расчетной оценки основных энергетическиmentioning

confidence: 93%

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Power Descriptions of a Storm Cloud of Troposphere of Earth: Features of Their Calculation and Applied Utilization

Баранов¹

2018

Elektroteh. elektromeh.

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Purpose. Implementation of calculation estimation of such basic power descriptions of the system is a «storm cloud-earth», as total charge of q Σ , electric potential of φ r , electric energy of W 0 and amplitude-temporal parameters (ATP) of pulse current i L (t) in the channel of a long air spark discharge of cloud on earth. Methodology. Electrophysics bases of technique of high voltages and large currents, theoretical bases of the electrical engineering, theoretical electrophysics, theory of the electromagnetic field and technique of the strong electric and magnetic fields. Results. The results of calculation estimation of basic power descriptions are resulted in the overhigh voltage electrophysics calculation system a «storm cloud-earth». To such descriptions of a storm cloud behave: total electric charge of q Σ , concentrated in a storm cloud of spherical form of the set volume with the shallow dispersible negatively charged including as particulate dielectric matters the set by an middle closeness; electric potential of φ r is in the spherical volume of a storm cloud of the set size; electric energy of W 0 , accumulated in the spherical volume of a storm cloud of the set radius of R 0 ; PTP (amplitude of I mL and duration of τ p at level 0.5I mL) of aperiodic impulse of current i L (t) of linear lightning in the plasma channel of a long air spark digit of a storm cloud on earth. The ground of possibility of the use is given in close practical calculations in place of the real storm cloud of the simplified calculation model of a storm cloud, containing the spherical volume of V 0 by the radius of R 0 is shown that at R 0 ≈985 m and accordingly V 0 ≈4•10 9 m 3 in the examined model of a storm cloud his indicated power descriptions arrive at the followings numeral values: charge of q Σ ≈−55.6 C, potential on the outward surface of cloud of φ R ≈−506 MV, electric energy of W 0 ≈14.1 GJ in a cloud and amplitude of aperiodic impulse of current of I mL ≈−262.1 кА at duration of his flowing τ p ≈142.4 μs in the plasma channel of a long air spark digit of cloud on earth. This calculation information well correlates with the known experimental information, characteristic for the short shots of lightning in surface objects. The receive results will be instrumental in possibility of prognostication of a sticky storm wicket specialists at presence of only minimum initial information about a storm cloud in earthly troposphere. Originality. First at the analysis of a storm situation in troposphere of Earth offered approach, related to bringing the real storm cloud over the volume of V 0 to an equivalent on volume spherical storm cloud by the radius of R 0 , for which will apply the physical and mathematical vehicle of analysis of flowings in him electrophysics processes developed an author. Practical value. Application of the in practice calculation findings will allow to deepen scientific and technical knowledge in area of nature of atmospheric electricity, will be instrumental in further development of physics of linear ...

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Section: приведены результаты расчетной оценки основных энергетическиmentioning

confidence: 91%

Section: приведены результаты расчетной оценки основных энергетическиmentioning

confidence: 93%

Power Descriptions of a Storm Cloud of Troposphere of Earth: Features of Their Calculation and Applied Utilization

Баранов¹

2018

Elektroteh. elektromeh.

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“…In contrast to the high-voltage test installations created in foreign countries in the field of electrical safety, EMC, and the resistance of technical facilities to the action of artificial lightning and PEMIs according to [4][5][6][7][8][9][10][12][13][14][15][16], the high-current high-voltage test electric equipment available in Ukraine is characterized by the originality of constructing its discharge electric circuits with a global priority and made of domestic components, structural and insulating materials [17][18][19][20][21][22][23][24]. For well-known reasons, the acquisition of expensive foreign electrical installations is an unrealistic task for us.…”

Section: -97 на оригинальных отечественных высоковольтных установкахmentioning

confidence: 99%

ANALYSIS OF CHARACTERISTICS AND POSSIBILITIES OF HIGH-VOLTAGE COMPLEX SCIENTIFIC-&-RESEARCH PLANNING-&-DESIGN INSTITUTE «MOLNIYA» OF NTU «KHPI» FOR THE TESTS OF OBJECTS OF ENERGY, ARMAMENT, AVIATION AND SPACE-ROCKET TECHNIQUE ON ELECTRIC SAFETY AND EMC

Баранов¹,

Buriakovskyi²,

Князєв³

et al. 2020

Electrical Engineering &Amp; Electromechanics

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Purpose. Implementation of analysis of basic technical descriptions and new possibilities of separate electric options of unique high-voltage electrical engineering complex Scientific-&-Research Planning-&-Design Institute «Molniya» of NTU «KhPI», intended for testing objects of industrial energy (IE) on electric safety, action on them of standard storm and interconnect pulses of voltage (current), and also objects of armament and military technique (OAMT), aviation (AT) and space-rocket (SRT) technique on electromagnetic compatibility (EMC) and resistibility at direct action on them of the rationed pulses of current of artificial lightning and row of no-spread temporal functions of pulses of current (high-voltage). Methodology. Basis of the applied electrical engineering, electroenergy and electromechanics, electrophysics bases of technique of high-voltage and large pulse currents, bases of the applied instrument-making, high-voltage measuring technique and standardization. Results. Description of basic technical descriptions and new possibilities of component parts of unique high-voltage electrical engineering complex Scientific-&-Research Planning-&-Design Institute «Molniya» of NTU «KhPI», intended for testing different objects of IE on electric safety, their resistibility to direct (indirect) action of standard aperiodic storm and interconnect pulses of voltage (current), and also OAMT, AT and SRT on EMC and resistibility to lightning at a direct action on them of the rationed pulses of current of artificial lightning. It is shown that these tests can be conducted in accordance with the requirements of normative documents of the

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“…Most often, in the practice of testing individual elements of such aircraft as civil and military aircraft for lightning, the following combinations of these lightning current components are used [1][2][3][4]: A-, B-and C-components, A-, B-and C * -components and D-, B-and C*-components. For indicated lightning current components, such an important parameter for the electrothermal loading in the high-current discharge circuit of the powerful GCL of the test objects of aviation and rocket and space technology, in accordance with the requirements of [1,2], as the integral of their action J L , does not numerically exceed 2·10 6 J/ ± 20 %. We note that it is the value of this integral J L that determines the value of the thermal energy released on the test element of an object.…”

mentioning

confidence: 99%

“…In addition, when performing full-scale tests according to the requirements of the international standard IEC 62305-1: 2010 [5] of electric power facilities for the lightning strength of the value of the action integral JL of the aperiodic current pulse of 10 μs/350 μs of artificial lightning generated by the developed and created in 2012 at the Department No. 4 of electromagnetic tests of the Research & Design Institute «Molniya» of the NTU «KhPI» with powerful GCL [6], for the I level of their protection against lightning should be 10·10 6 J/ ± 35 %. With the electrical current loading of the tested objects, it is necessary to register and monitor the ATP of the lightning current component used in the online mode.…”

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confidence: 99%

Coaxial Disk Shunt for Measuring in the Heavy-Current Chain of High-Voltage Generator of Storm Discharges of Impulses of Current of Artificial Lightning With the Integral of Action to 15•106 J/Ohm

Baranov¹,

Kniaziev²,

Rudakov³

2017

Elektroteh. elektromeh.

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A generator of aperiodic current pulses of artificial lightning with a rationed temporal form of 10 μs/350 μs with an amplitude of ±(100–200) kA

Cited by 11 publications

References 1 publication

Power Descriptions of a Storm Cloud of Troposphere of Earth: Features of Their Calculation and Applied Utilization

Power Descriptions of a Storm Cloud of Troposphere of Earth: Features of Their Calculation and Applied Utilization

ANALYSIS OF CHARACTERISTICS AND POSSIBILITIES OF HIGH-VOLTAGE COMPLEX SCIENTIFIC-&-RESEARCH PLANNING-&-DESIGN INSTITUTE «MOLNIYA» OF NTU «KHPI» FOR THE TESTS OF OBJECTS OF ENERGY, ARMAMENT, AVIATION AND SPACE-ROCKET TECHNIQUE ON ELECTRIC SAFETY AND EMC

Coaxial Disk Shunt for Measuring in the Heavy-Current Chain of High-Voltage Generator of Storm Discharges of Impulses of Current of Artificial Lightning With the Integral of Action to 15•106 J/Ohm

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