SU508759A1 - The method of determining the location of a single-phase lock on the aerial lines of xv compensated networks and into the networks of xs with an isolated neutral - Google Patents
The method of determining the location of a single-phase lock on the aerial lines of xv compensated networks and into the networks of xs with an isolated neutralInfo
- Publication number
- SU508759A1 SU508759A1 SU1673800A SU1673800A SU508759A1 SU 508759 A1 SU508759 A1 SU 508759A1 SU 1673800 A SU1673800 A SU 1673800A SU 1673800 A SU1673800 A SU 1673800A SU 508759 A1 SU508759 A1 SU 508759A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- networks
- location
- determining
- currents
- phase
- Prior art date
Links
Landscapes
- Locating Faults (AREA)
Description
Ha поврежденном присоединении имеютс равные уровни гармоник в токах двух неповрежденных фаз, а в токе поврежденной фазы от питающего центра до места однофазного замыкани содержитс сумма высших гармоник трех фаз присоединений, т. е. уровень гармоник в одном из фазных токов поврежденного присоединени суид,ественно выше, чем равные уровни двух других фаз.Damaged connections have equal levels of harmonics in the currents of two intact phases, and the current of the damaged phase from the supply center to the single-phase circuit contains the sum of the higher harmonics of the three phases of connections, i.e. the level of harmonics in one of the phase currents of the damaged connection is naturally higher than equal levels of the other two phases.
Высшие гармоники токов нагрузки присоединений не могут изменить указанных соотношений уровней гармоник емкостных токов поврежденного и неповреладенных присоединений , так как нейтрали трансформаторов нагрузки изолированы и высшие гармоники токов нагрузки содержатс в равных количествах во всех фазных токах, так что их сумма всегда равна нулю.Higher harmonics of the load current of the connections cannot change the indicated ratios of the harmonic levels of the capacitive currents of the damaged and undirected connections, since the neutrals of the load transformers are isolated and the higher harmonics of the load currents are contained in equal quantities in all phase currents, so their sum is always zero.
На чертеже показано распределение напр женности магнитного пол в различных поперечных сечени х линии.The drawing shows the distribution of the intensity of the magnetic field in different cross sections of the line.
Преимущества предлагаемого способа заключаетс в том, что на его основе место повреждени определ етс по качественному признаку независимо от показани на других лини х, вследствие чего применение описываемого способа обуславливает возможность использовани приборов большей чувствительности , увеличивает надежность и уменьшает врем поиска.The advantages of the proposed method lies in the fact that, based on it, the damage site is determined by a qualitative sign regardless of the indication on other lines, as a result of which the use of the described method determines the possibility of using higher sensitivity devices, increases reliability and reduces search time.
Областью применени предложенного способа вл ютс воздушные сети, компенсированные или с изолированной нейтралью. Причем количество линий, их прот женность и соотношение емкостных токов линий не накладывают ограничений на применение способа.The field of application of the proposed method is air networks, compensated or with an isolated neutral. Moreover, the number of lines, their length and the ratio of the capacitive currents of the lines do not impose restrictions on the application of the method.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1673800A SU508759A1 (en) | 1971-06-21 | 1971-06-21 | The method of determining the location of a single-phase lock on the aerial lines of xv compensated networks and into the networks of xs with an isolated neutral |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1673800A SU508759A1 (en) | 1971-06-21 | 1971-06-21 | The method of determining the location of a single-phase lock on the aerial lines of xv compensated networks and into the networks of xs with an isolated neutral |
Publications (1)
Publication Number | Publication Date |
---|---|
SU508759A1 true SU508759A1 (en) | 1976-03-30 |
Family
ID=20480434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1673800A SU508759A1 (en) | 1971-06-21 | 1971-06-21 | The method of determining the location of a single-phase lock on the aerial lines of xv compensated networks and into the networks of xs with an isolated neutral |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU508759A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102064537A (en) * | 2010-12-10 | 2011-05-18 | 天津天大求实电力新技术股份有限公司 | Method for judging and processing single-phase earth faults by using electronic mutual inductor |
-
1971
- 1971-06-21 SU SU1673800A patent/SU508759A1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102064537A (en) * | 2010-12-10 | 2011-05-18 | 天津天大求实电力新技术股份有限公司 | Method for judging and processing single-phase earth faults by using electronic mutual inductor |
CN102064537B (en) * | 2010-12-10 | 2013-10-16 | 天津天大求实电力新技术股份有限公司 | Method for judging and processing single-phase earth faults by using electronic mutual inductor |
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