RU2012100951A - METHOD FOR MEASURING RESISTANCE OF DC ISOLATION OF DC CIRCUITS UNDER OPERATING VOLTAGE, AND A DEVICE FOR ITS IMPLEMENTATION - Google Patents
METHOD FOR MEASURING RESISTANCE OF DC ISOLATION OF DC CIRCUITS UNDER OPERATING VOLTAGE, AND A DEVICE FOR ITS IMPLEMENTATION Download PDFInfo
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- RU2012100951A RU2012100951A RU2012100951/28A RU2012100951A RU2012100951A RU 2012100951 A RU2012100951 A RU 2012100951A RU 2012100951/28 A RU2012100951/28 A RU 2012100951/28A RU 2012100951 A RU2012100951 A RU 2012100951A RU 2012100951 A RU2012100951 A RU 2012100951A
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- voltage
- insulation resistance
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Abstract
1. Способ измерения сопротивления изоляции двухпроводных цепей постоянного тока, находящихся под напряжением, в соответствии с которым первым измерительным каналом с известным входным сопротивлением производят поочередное измерение напряжений между каждым полюсом контролируемой цепи и шиной заземления, вторым измерительным каналом одновременно измеряют напряжение контролируемой цепи, при этом после каждого подключения делают определенную выдержку времени для завершения переходных коммутационных процессов, в интервале, кратном периоду наиболее вероятной помехи, производят по “n” измерений с вычислением отношения напряжения на полюсе к напряжению контролируемой цепи, а общее сопротивление изоляции вычисляют по формуле:где- напряжение контролируемой цепи при i-м измерении и подключении к первому полюсу;- напряжение контролируемой цепи при j-м измерении и подключении к второму полюсу;- соответствующие напряжения на первом и втором полюсах относительно цепи заземления;- входное сопротивление коммутируемого измерительного канала;дополнительно может быть вычислено сопротивление изоляции каждого из полюсов контролируемой цепи по формулам, приведенным в описании.2. Способ измерения сопротивления изоляции двухпроводных цепей постоянного тока, находящихся под напряжением, по п.1, отличающийся тем, что в интервалах между измерениями сопротивления изоляции по п.1 производят контроль измерительных каналов путем подключения входов первого измерительного канала к одной точке (шине заземления) и определения среднего значения «нуля» после “n” измерений для учета в расчете напряжения, а затем подключения э1. The method of measuring the insulation resistance of two-wire DC circuits under voltage, in accordance with which the first measuring channel with a known input resistance alternately measure the voltage between each pole of the controlled circuit and the ground bus, the second measuring channel simultaneously measure the voltage of the controlled circuit, while after each connection make a certain delay for the completion of transient switching processes, in the interval multiple of to the most probable interference period, take “n” measurements to calculate the ratio of the voltage at the pole to the voltage of the controlled circuit, and the total insulation resistance is calculated by the formula: where is the voltage of the controlled circuit at the ith measurement and connected to the first pole; is the voltage of the controlled circuit at the jth measurement and connection to the second pole; - the corresponding voltages at the first and second poles relative to the ground circuit; - the input impedance of the switched measuring channel; can be additionally calculated insulation resistance of each of the poles of the controlled circuit according to the formulas given in the description. 2. The method of measuring the insulation resistance of two-wire DC circuits under voltage according to claim 1, characterized in that in the intervals between the measurements of insulation resistance according to claim 1, the measurement channels are monitored by connecting the inputs of the first measuring channel to one point (ground bus) and determining the average value of "zero" after the "n" measurements to take into account the calculation of voltage, and then connect e
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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RU2012100951/28A RU2503964C2 (en) | 2012-01-11 | 2012-01-11 | Method to measure insulation resistance of dc circuits under operating voltage and device for its realisation |
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RU2012100951/28A RU2503964C2 (en) | 2012-01-11 | 2012-01-11 | Method to measure insulation resistance of dc circuits under operating voltage and device for its realisation |
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RU2012100951A true RU2012100951A (en) | 2013-07-20 |
RU2503964C2 RU2503964C2 (en) | 2014-01-10 |
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RU2012100951/28A RU2503964C2 (en) | 2012-01-11 | 2012-01-11 | Method to measure insulation resistance of dc circuits under operating voltage and device for its realisation |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112083299A (en) * | 2020-09-11 | 2020-12-15 | 国网重庆市电力公司北碚供电分公司 | Direct current system insulation fault prediction method based on Kalman filtering |
CN117405975A (en) * | 2023-12-14 | 2024-01-16 | 深圳鹏城新能科技有限公司 | Method, system and medium for detecting insulation resistance of PV panel |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU828117A1 (en) * | 1979-03-05 | 1981-05-07 | Предприятие П/Я В-2156 | Device for measuring dc electric network insulation resistance |
SU1041958A1 (en) * | 1981-04-30 | 1983-09-15 | Винницкий политехнический институт | Two-wire dc network insulation resistant measuring device |
RU2044324C1 (en) * | 1992-06-24 | 1995-09-20 | Центральный научно-исследовательский институт "Гранит" | Power network insulation resistance measurement technique |
US6211513B1 (en) * | 1998-10-30 | 2001-04-03 | Avaya Technology Corp. | Automated test system and method for device having circuit and ground connections |
RU2384855C1 (en) * | 2008-12-17 | 2010-03-20 | Сергей Валентинович Романов | Measuring method of insulation resistance in direct current circuits |
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2012
- 2012-01-11 RU RU2012100951/28A patent/RU2503964C2/en active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112083299A (en) * | 2020-09-11 | 2020-12-15 | 国网重庆市电力公司北碚供电分公司 | Direct current system insulation fault prediction method based on Kalman filtering |
CN117405975A (en) * | 2023-12-14 | 2024-01-16 | 深圳鹏城新能科技有限公司 | Method, system and medium for detecting insulation resistance of PV panel |
CN117405975B (en) * | 2023-12-14 | 2024-03-22 | 深圳鹏城新能科技有限公司 | Method, system and medium for detecting insulation resistance of PV panel |
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RU2503964C2 (en) | 2014-01-10 |
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