SU1188672A1 - Method of determining conductivity of separate phase insulation with respect to earth - Google Patents

Method of determining conductivity of separate phase insulation with respect to earth Download PDF

Info

Publication number
SU1188672A1
SU1188672A1 SU843724356A SU3724356A SU1188672A1 SU 1188672 A1 SU1188672 A1 SU 1188672A1 SU 843724356 A SU843724356 A SU 843724356A SU 3724356 A SU3724356 A SU 3724356A SU 1188672 A1 SU1188672 A1 SU 1188672A1
Authority
SU
USSR - Soviet Union
Prior art keywords
phase
earth
conductivity
insulation
voltage
Prior art date
Application number
SU843724356A
Other languages
Russian (ru)
Inventor
Эдуард Соломонович Шурин
Original Assignee
Государственный Макеевский Ордена Октябрьской Революции Научно-Исследовательский Институт По Безопасности Работ В Горной Промышленности
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Государственный Макеевский Ордена Октябрьской Революции Научно-Исследовательский Институт По Безопасности Работ В Горной Промышленности filed Critical Государственный Макеевский Ордена Октябрьской Революции Научно-Исследовательский Институт По Безопасности Работ В Горной Промышленности
Priority to SU843724356A priority Critical patent/SU1188672A1/en
Application granted granted Critical
Publication of SU1188672A1 publication Critical patent/SU1188672A1/en

Links

Landscapes

  • Measurement Of Resistance Or Impedance (AREA)

Abstract

СПОСОБ ОПРЕДЕЛЕНИЯ ПРОВОДИМОСТИ ИЗОЛЯЦИИ ОТДЕЛЬНЫХ ФАЗ ОТНОСИТЕЛЬНО ЗЕМЛИ, заключающийс  в измерении общей проводимости изол ции токоведущих частей относительно земли, а также модул  фазного напр жени  и последующем переключении двух отход щих фаз одна относительно другой, отличающийс  тем, что, с целью упрощени , до и после переключени  фаз измер ют напр жение смещени  нейтрали, а искомые проводимости YA, YB, YC определ ют по формулам V . иф. V Y - Д|+ фУ - зУф Y vfai H + аи + Цф) - зи; где иф - модуль фазного напр жени ; i Y - обща  проводимость изол ции токоведущих частей относительно (Л земли; 7д и t/ -напр жение смещени  нейтрали до переключени  фаз и после; а --|-4-; -фазный множитель; / - единичный вектор.A METHOD FOR DETERMINING THE CONDUCTIVITY OF ISOLATION OF INDIVIDUAL PHASES RELATING TO THE EARTH, which consists in measuring the total conductivity of the insulation of current-carrying parts relative to the ground, as well as the phase voltage module and the subsequent switching of the two outgoing phases relative to each other, characterized by the the phase switch measures the displacement voltage of the neutral, and the desired conductivities YA, YB, YC are determined by formulas V. if V Y - D | + FU - ZUf Y vfai H + Ai + ZF) - Z; where if is the phase voltage module; i Y is the total conductivity of the insulation of current-carrying parts relative to (L of the earth; 7d and t / is the voltage displacement of the neutral before and after phase switching; a - | -4-; - phase multiplier; / - unit vector.

Description

00 00 О500 00 O5

| ьо| yo

Claims (1)

СПОСОБ ОПРЕДЕЛЕНИЯ ПРОВОДИМОСТИ ИЗОЛЯЦИИ ОТДЕЛЬНЫХ ФАЗ ОТНОСИТЕЛЬНО ЗЕМЛИ, заключающийся в измерении общей проводимости изоляции токоведущих частей относительно земли, а также модуля фазного напряжения и последующем переключении двух от ходящих фаз одна относительно другой, отличающийся тем, что, с целью упрощения, до и после переключения фаз измеряют напряжение смещения нейтрали, а искомые проводимости Уд, Yr. Yc определяют по формулам у = у^ п ~Ь Н~ Уф) · где Utp — модуль фазного напряжения;METHOD FOR DETERMINING THE CONDUCTIVITY OF INSULATION OF INDIVIDUAL PHASES REGARDING THE GROUND, which consists in measuring the total conductivity of the insulation of live parts relative to earth, as well as the phase voltage module and the subsequent switching of two from the outgoing phases, one relative to the other, characterized in that, in order to simplify, before and after phase switching measure the neutral bias voltage, and the desired conductivity Ud, Yr. Yc is determined by the formulas y = y ^ n ~ bH ~ ~ Vp) · where Utp is the phase voltage modulus; У — общая проводимость изоляции токоведущих частей относительно земли;Y is the total conductivity of insulation of live parts relative to earth; ΰ-ц и Urf—напряжение смещения нейтрали до переключения фаз и после; а =—£-+/^-фазный множитель;ΰ-c and Urf — neutral bias voltage before and after phase switching; a = - £ - + / ^ - phase factor; / — единичный вектор./ Is the unit vector.
SU843724356A 1984-04-10 1984-04-10 Method of determining conductivity of separate phase insulation with respect to earth SU1188672A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU843724356A SU1188672A1 (en) 1984-04-10 1984-04-10 Method of determining conductivity of separate phase insulation with respect to earth

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU843724356A SU1188672A1 (en) 1984-04-10 1984-04-10 Method of determining conductivity of separate phase insulation with respect to earth

Publications (1)

Publication Number Publication Date
SU1188672A1 true SU1188672A1 (en) 1985-10-30

Family

ID=21112728

Family Applications (1)

Application Number Title Priority Date Filing Date
SU843724356A SU1188672A1 (en) 1984-04-10 1984-04-10 Method of determining conductivity of separate phase insulation with respect to earth

Country Status (1)

Country Link
SU (1) SU1188672A1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Цапенко Е. Ф., Кораблев В. П. Измерительна техника. 1975, № II, с. 67-68. Цапенко Е. Ф., Случевский Ю. Н. Определение параметров изол ции отдельных фаз относительно земли в сети с изолированной нейтралью.«Метрологи , 1981, № 9, с. 44-50. *

Similar Documents

Publication Publication Date Title
SU1188672A1 (en) Method of determining conductivity of separate phase insulation with respect to earth
IE842112L (en) Power semiconductor device with main current section and¹emulation current section
JPS5577220A (en) Crystal vibrator
EP0055203A3 (en) Selective commutation circuit for an inverter
JPS566578A (en) Video switch circuit
SU1215057A1 (en) Method of determining parameters of insulation of three-phase electric networks with insulated neutral up to 1000 v
SU1700495A1 (en) Method of phase-to-ground insulation conductivity measurement in multiphase networks
JPS54121177A (en) Transducer
RU94039229A (en) Phase-to-ground fault locator for insulated- or compensated-neutral supply mains
JPS5694811A (en) Electric charge detecting circuit
SU1377774A1 (en) Device for checking phase alternation
Moorthy et al. Improved phase-coordinate Gauss-Seidel load flow algorithm
SU1746466A1 (en) Device for regulation and balancing of voltage on three- phase network with neutral wire
SU1275643A1 (en) Device for symmetrizing voltages in electric power supply system with one-phase load
SU1394157A1 (en) Device for measuring corona losses of power in electric power line
SU1347038A1 (en) Method of determining insulation parameters of three-phase electric mains with insulated neutral and voltage exceeding 1000 v
JPS55149061A (en) Ground resistance measuring method of long ground electrode by deep embedement
SU1742928A1 (en) Device for directional protection against one-phase short- circuit to ground in three-phase network with insulated neutral
SU1499282A1 (en) Method of determining the distance to the place of single-phase short-circuit to the ground of electric power line
RU2020500C1 (en) Method for measuring insulation parameters
SU1030744A1 (en) Device for measuring electric network insulation resistance
RU1780044C (en) Method for determining parameters of network phase insulation with insulated neutral
RU95102709A (en) Method to determine direction of fault to earth in aerial distribution networks
SU1576874A1 (en) Method of determining full conductance of insulation of three-phase network with insulated neutral
SU853570A1 (en) Device for locating grounding in networks with isolated neutral