RU2012129403A

RU2012129403A - VOLTAGE REMOVAL METHOD

Info

Publication number: RU2012129403A
Application number: RU2012129403/07A
Authority: RU
Inventors: Владимир Анатольевич Благинин; Илья Евгеньевич Кажекин
Priority date: 2012-07-11
Filing date: 2012-07-11
Publication date: 2014-01-20
Also published as: RU2506675C1

Abstract

Способ устранения перенапряжений, включающий использование соединенных последовательно друг с другом емкостных и резистивного элементов, заземляющих нейтраль с сопротивлением резистора, выбираемым в диапазоне 0,25-30 кОм, отличающийся тем, что емкость конденсаторов выбирается в соответствии с условием,где R- сопротивление заземляющего резистора,L- эквивалентная продольная индуктивность фазы электросистемы,а между фазами электросети включаются дополнительные конденсаторы, емкость которых должна удовлетворять следующему условию,где R- эквивалентное продольное активное сопротивление фазы электросистемы,С- емкость между каждой из фаз и корпусом.A method of overvoltage elimination, including the use of capacitive and resistive elements connected in series, grounding neutral with a resistor resistance selected in the range of 0.25-30 kOhm, characterized in that the capacitance of the capacitors is selected in accordance with the condition where R is the resistance of the grounding resistor , L is the equivalent longitudinal inductance of the phase of the electrical system, and between the phases of the mains additional capacitors are switched on, the capacitance of which must satisfy the following condition, where R- are equivalent longitudinal resistance electrical phase capacitance C between each of the phases and the housing.

Claims

A way to eliminate overvoltage, including the use of capacitive and resistive elements connected in series with each other, grounding the neutral with a resistor resistance selected in the range of 0.25-30 kOhm, characterized in that the capacitance of the capacitors is selected in accordance with the condition

{FROM}_{R} \geq four \frac{L_{n}}{R_{N}^{2}}

,

where R _N is the resistance of the grounding resistor,

L _n is the equivalent longitudinal inductance of the phase of the electrical system,

and between the phases of the mains additional capacitors are switched on, the capacitance of which must satisfy the following condition

C \geq \frac{2}{3} \frac{L_{n}}{R_{n}^{2}} - {FROM}_{f}

,

where R _n is the equivalent longitudinal active resistance of the phase of the electrical system,

With _f is the capacitance between each of the phases and the housing.