CN205608133U - Phase to earth fault auxiliary detection device - Google Patents
Phase to earth fault auxiliary detection device Download PDFInfo
- Publication number
- CN205608133U CN205608133U CN201620373250.4U CN201620373250U CN205608133U CN 205608133 U CN205608133 U CN 205608133U CN 201620373250 U CN201620373250 U CN 201620373250U CN 205608133 U CN205608133 U CN 205608133U
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- phase
- controller
- earth fault
- voltage
- fault
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The utility model discloses a phase to earth fault auxiliary detection device is applicable to the supplementary detection of 10kV distribution network isolated neutral system phase to earth fault, including device body and device control ware, they are connected through circular connector. During normal operating state, the controller is real -time monitoring system voltage electric current on line, in case take place phase to earth fault, the controller can drop into according to the pulse train who sets for by control contactor, loops in between non - trouble congruence trouble is looked at and appraised. Under fault indicator detects the condition of pulse current and loss of voltage, the fault indicator board turning to upload main website and the appointed cell -phone of staff with trouble information. The utility model discloses cooperation fault indicator system can realize that phase to earth fault effectively fixes a position, to reducing the frequency of power cut, shortens the power off time, enhancing power supply reliability, and the steady operation of guarantee circuit has positive meaning.
Description
Technical field
This utility model relates to field of power, particularly relates to power network neutral point isolated neutral system singlephase earth fault location and asks
Topic.
Background technology
The medium voltage distribution network isolated neutral method of operation, can not make owing to short circuit current is less when there is singlephase earth fault
The effective board turning of fault detector of respective lines, brings the biggest impact to line walking and the transformer station timely handling failure of operations staff on duty.
In the past, improve distribution network reliability and generally can change 10kV connections mode to use, strengthen the insulation of circuit
Change level, changes aging equipment in time, strengthens the professional training to 10kV circuit operations staff, specification subscriber equipment type selecting,
Comprehensively arrange to have a power failure, turn powered operation, carry out the measures such as distribution network live line work.These measures decrease power failure to a certain extent
Number of times, improves power supply reliability.But, along with China's economy and society development, improving constantly of living standards of the people,
Power consumer it is also proposed higher requirement to power supply reliability.
Now with hyundai electronics, computer, communication and network technology, by power distribution network online data and off-line data, distribution
It is integrated that network data and user data, electric network composition and geographical graphic carry out information, constitutes complete automated system, realizes power distribution network
And equipment is properly functioning and monitoring under accident condition, protects, control, with the modernization of electric charge distribution management.
A critical function therein be exactly one-phase earthing failure in electric distribution network location, utilize singlephase earth fault auxiliary detection device and
The cooperation of malfunction indicator system, it is possible to achieve the singlephase earth fault of power distribution network the most quickly positions, and quickly isolates, non-faulting
The functions such as district's fast recovery of power supply, improve power supply reliability, ensure the stable operation of circuit.
Summary of the invention
The utility model discloses a kind of single-phase earthing auxiliary detection device, device is based on injection method detection singlephase earth fault
Principle.Coordinate malfunction indicator system can realize what 10kV distribution isolated neutral system singlephase earth fault quickly positioned
Function.
The technical solution of the utility model is:
A kind of singlephase earth fault auxiliary detection device, this utility model is characterised by: include body 2 and by aviation plug with
The controller 8 of connection；Wherein, body 2 includes high voltage connector 3 and the high-voltage connection being connected respectively with high voltage connector 3
Terminal 1, grounding resistor 4, grounding resistor 4 is connected with grounding device 6 by CT5；Be provided with PT7 respectively with high-voltage connecting
Line terminals 1 and controller 8 connect；CT5 is also connected with controller 8.
This utility model high voltage connector 3 is divided into A C biphase；High voltage connector 3 is respectively provided with electric blocking and machinery
Locking, prevents the biphase contact simultaneously of A C to be short-circuited.
The voltage that this utility model controller is monitored when system normal operating condition by PT7 is 57.7V；Single-phase when occurring
During earth fault, monitoring control devices to faulted phase voltage reduces, and healthy phases voltage raises.
This utility model controller 8 is double is provided with manual switching and automatic switching function.
Device of the present utility model is applicable to 10kV power network neutral point isolated neutral system singlephase earth fault location.The most once
It is biphase that binding post 1 accesses 10kV power distribution network A C；During normal operating condition, controller can on-line real time monitoring system electricity
, once there is singlephase earth fault in current voltage, controller can detect voltage when reaching controller voltage starting definite value, controls height
Crimping tentaculum 3, puts into according to the pulse train set, and forms loop between healthy phases and fault phase earth point.Work as fault
In the case of pointer detection reduces to pulse current and voltage, fault detector board turning, and fault message is uploaded main website and refers to
Determine mobile phone.Device cooperation fault detector can realize singlephase earth fault and effectively position, and for reducing frequency of power cut, shortening stops
The electricity time, improve power supply reliability, ensure that the stable operation of circuit has positive meaning.
Accompanying drawing explanation
Fig. 1 is this utility model schematic diagram of device.
Detailed description of the invention
Seeing Fig. 1, a kind of singlephase earth fault auxiliary detection device, this utility model is characterised by: include body 2 and by boat
The controller 8 that blind plug is attached thereto；Wherein, body 2 includes high voltage connector 3 and is connected with high voltage connector 3 respectively
High-voltage connection terminal 1, grounding resistor 4, grounding resistor 4 is connected with grounding device 6 by CT5；It is provided with PT7 respectively
It is connected with high-voltage connection terminal 1 and controller 8；CT5 is also connected with controller 8.
This utility model high voltage connector 3 is divided into A C biphase；High voltage connector 3 is respectively provided with electric blocking and machinery
Locking, prevents the biphase contact simultaneously of A C to be short-circuited.
The voltage that this utility model controller is monitored when system normal operating condition by PT7 is 57.7V；Single-phase when occurring
During earth fault, monitoring control devices to faulted phase voltage reduces, and healthy phases voltage raises.
This utility model controller 8 is double is provided with manual switching and automatic switching function.
Wherein to access 10kV power distribution network A C biphase for primary side binding post 1；Controller 8 connects body 2 by aviation plug,
During normal operating condition, controller 8 monitors system voltage electric current by PT7 and CT5；Power distribution network primary side is if it occur that single-phase
Earth fault (instantaneity or permanent fault), controller detects the voltage x current change of fault phase and healthy phases, works as control
When the voltage that device 8 processed detects reaches controller voltage starting definite value, starting logic judging function, controller is signaled to this
Body, after certain time-delay, body puts into high voltage connector 3, and the folding of catalyst is controlled by the pulse train of program setting,
Put into A phase contact or put into the phase contact in C phase contact, by healthy phases voltage higher than faulted phase voltage,
Loop is formed between healthy phases and fault phase earth point.When fault detector detects the situation that pulse current and voltage reduce
Under, fault detector board turning, and fault message is uploaded main website and designated mobile phone.
Operator on duty can rush to repair fault according to the timely establishment officer of fault location information, for rapidly removing faults, restores electricity
There is positive effect.
Claims (4)
1. a singlephase earth fault auxiliary detection device, it is characterised in that: include body 2 and be attached thereto by aviation plug
Controller 8；Wherein, body 2 include high voltage connector 3 and the high-voltage connection terminal 1 being connected with high voltage connector 3 respectively,
Grounding resistor 4, grounding resistor 4 is connected with grounding device 6 by CT5；Be provided with PT7 respectively with high-voltage connection terminal 1
Connect with controller 8；CT5 is also connected with controller 8.
A kind of phase-to-ground fault detection auxiliary device the most according to claim 1, it is characterised in that: high voltage connector 3
It is divided into AC biphase；High voltage connector 3 is respectively provided with electric blocking and mechanical latching, prevents that AC is biphase to be contacted simultaneously
It is short-circuited.
A kind of phase-to-ground fault detection auxiliary device the most according to claim 1, it is characterised in that: controller passes through PT7
The voltage monitored when system normal operating condition is 57.7V；When there is singlephase earth fault, monitoring control devices is to fault
Phase voltage reduces, and healthy phases voltage raises.
A kind of phase-to-ground fault detection auxiliary device the most according to claim 1, it is characterised in that: controller 8 is double to be set
There are manual switching and automatic switching function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620373250.4U CN205608133U (en) | 2016-04-28 | 2016-04-28 | Phase to earth fault auxiliary detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620373250.4U CN205608133U (en) | 2016-04-28 | 2016-04-28 | Phase to earth fault auxiliary detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205608133U true CN205608133U (en) | 2016-09-28 |
Family
ID=56971807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620373250.4U Active CN205608133U (en) | 2016-04-28 | 2016-04-28 | Phase to earth fault auxiliary detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205608133U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807187A (en) * | 2016-04-28 | 2016-07-27 | 云南电力试验研究院(集团)有限公司 | Single-phase ground-fault assist detection device |
| RU2666169C1 (en) * | 2017-12-29 | 2018-09-06 | федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") | METHOD OF TOPOGRAPHIC SEARCHING OF GROUND FAULT LOCATION IN 10 kV AIR NETWORKS WITH INSULATED NEUTRAL |
-
2016
- 2016-04-28 CN CN201620373250.4U patent/CN205608133U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807187A (en) * | 2016-04-28 | 2016-07-27 | 云南电力试验研究院(集团)有限公司 | Single-phase ground-fault assist detection device |
| RU2666169C1 (en) * | 2017-12-29 | 2018-09-06 | федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") | METHOD OF TOPOGRAPHIC SEARCHING OF GROUND FAULT LOCATION IN 10 kV AIR NETWORKS WITH INSULATED NEUTRAL |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210203 Address after: 650217 No. 105 Yunda West Road, Kunming Economic and Technological Development Zone, Yunnan Province Patentee after: YUNNAN POWER GRID CO., LTD. ELECTRIC POWER Research Institute Address before: 650217 yundian science and Technology Park, No.105, Yunda West Road, economic development zone, Kunming City, Yunnan Province Patentee before: YUNNAN ELECTRIC POWER TEST & RESEARCH INSTITUTE (Group) Co.,Ltd. Patentee before: YUNNAN POWER GRID CO., LTD. ELECTRIC POWER Research Institute Patentee before: NORTH CHINA ELECTRIC POWER University (BAODING) Patentee before: YUNNAN ELECTRIC POWER TECHNOLOGY Co.,Ltd. |