SU917127A1 - Method of determination of insulation parameters of three-phase electric circuits with isolated neutral voltage above 1000 v - Google Patents
Method of determination of insulation parameters of three-phase electric circuits with isolated neutral voltage above 1000 v Download PDFInfo
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- SU917127A1 SU917127A1 SU802922082A SU2922082A SU917127A1 SU 917127 A1 SU917127 A1 SU 917127A1 SU 802922082 A SU802922082 A SU 802922082A SU 2922082 A SU2922082 A SU 2922082A SU 917127 A1 SU917127 A1 SU 917127A1
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- voltage
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- voltmeter
- additional conductivity
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Description
Изобретение относится к электроизмерительной технике и предназначено ДЛЯ применения в электрических сетях с изолированной нейтралью напряжением выше . 1ООО В.The invention relates to electrical engineering and is intended for use in electrical networks with an isolated neutral voltage above. 1OOO V.
Наиболее близким к предлагаемому является способ измерения полной проводимости изоляции и ее активной и емкости ной составляющих электрических сетей с изолированной нейтралью, основанный на измерении модулей и углов сдвига фаз напряжения нулевой последовательности относительно фазного напряжения, и до и после подключения дополнительной, проводимости [11.Closest to the proposed one is a method for measuring the total conductivity of insulation and its active and capacitive components of electric networks with isolated neutral, based on measuring the modules and phase angle of the zero-voltage voltage relative to the phase voltage, and before and after connecting additional conductivity [11.
Недостатком известного способа Является то, что величины измеряемых напряжений и углов, по которым определяются параметры их измерений до и после вве— . дедия дополнительной проводимости, содержат значительную погрешность. Кроме того, по известному способу требуется применение сложных измерительных прибо2 ров и дополнительные связи между элементами схем измерения.The disadvantage of this method is that the magnitude of the measured voltages and angles, which determine the parameters of their measurements before and after injection. Dedia additional conductivity, contain a significant error. In addition, the known method requires the use of complex measuring devices and additional connections between the elements of the measuring circuits.
Цепь изобретения - повышение точное— j ти и быстродействия определения параметров изоляции.The chain of the invention is to increase the exact - j ty and speed of determining the insulation parameters.
Поставленная цепь достигается тем, что в способе определения параметров изоляции трехфазных электрических сетей с изолированной нейтралью напряжением выше 1000 В, заключающемся в измерении величин напряжением нулевой последовательности и напряжения фазы электросети с дополнительной проводимостью относительно земли, измеряют величину линейного напряжения двух других фаз электросети и вычисляют полную, активную и емкостную проводимости изоляции электросети по формуламThe circuit is achieved in that in the method for determining the insulation parameters of three-phase electrical networks with an isolated neutral voltage above 1000 V, which consists in measuring the values of the zero sequence voltage and the phase voltage of the mains with additional conductivity relative to the ground, measure the linear voltage of the other two phases of the mains and calculate the total , active and capacitive conductivity of the insulation of the power grid according to the formulas
1,73-Vcpo1.73-Vcpo
-3·ν4ο-3 · ν4ο
917127 4 рые необходимы, установлены на подстанциях стационарно.917127 4th required, installed at substations permanently.
= Vy2-?2 .= Vy 2 -? 2 .
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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SU802922082A SU917127A1 (en) | 1980-05-14 | 1980-05-14 | Method of determination of insulation parameters of three-phase electric circuits with isolated neutral voltage above 1000 v |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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SU802922082A SU917127A1 (en) | 1980-05-14 | 1980-05-14 | Method of determination of insulation parameters of three-phase electric circuits with isolated neutral voltage above 1000 v |
Publications (1)
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SU917127A1 true SU917127A1 (en) | 1982-03-30 |
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Application Number | Title | Priority Date | Filing Date |
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SU802922082A SU917127A1 (en) | 1980-05-14 | 1980-05-14 | Method of determination of insulation parameters of three-phase electric circuits with isolated neutral voltage above 1000 v |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2768524C2 (en) * | 2020-02-28 | 2022-03-24 | Федеральное государственное казенное военное образовательное учреждение высшего образования "Военный учебно-научный центр Военно-Морского Флота "Военно-морская академия им. Адмирала Флота Советского Союза Н.Г. Кузнецова" | Method of determining the initial stage of insulation breakdown and monitoring its development of an existing three-phase electrical network with an isolated neutral |
-
1980
- 1980-05-14 SU SU802922082A patent/SU917127A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2768524C2 (en) * | 2020-02-28 | 2022-03-24 | Федеральное государственное казенное военное образовательное учреждение высшего образования "Военный учебно-научный центр Военно-Морского Флота "Военно-морская академия им. Адмирала Флота Советского Союза Н.Г. Кузнецова" | Method of determining the initial stage of insulation breakdown and monitoring its development of an existing three-phase electrical network with an isolated neutral |
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