CN105162085A - Low voltage network protective device - Google Patents
Low voltage network protective device Download PDFInfo
- Publication number
- CN105162085A CN105162085A CN201510659884.6A CN201510659884A CN105162085A CN 105162085 A CN105162085 A CN 105162085A CN 201510659884 A CN201510659884 A CN 201510659884A CN 105162085 A CN105162085 A CN 105162085A
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- CN
- China
- Prior art keywords
- breaker
- low voltage
- switchgear house
- circuit breaker
- distribution
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- Legal status (The legal status 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 status listed.)
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to the low voltage network protection technical field, and provides a low voltage network protective device. The low voltage network protective device comprises a low voltage distribution network body, a breaker module and a set of fault monitoring modules. The breaker module comprises a distribution room total breaker (5), at least one node breaker (6) and a user unit breaker (7); the distribution room total breaker (5) is in series connection with the inlet wire circuit of a distribution room (1); the distribution line (2) of the low voltage distribution network body is provided with a set of distribution nodes which employ an electric pole (3) as a concrete node position; the at least one node breaker (6) is installed at the distribution nodes in series; the user unit breaker (7) is installed in the inlet wire circuit of a user unit (4) in series. The low voltage network protective device has the characteristics of simple structure, low cost and convenient installation, and can protect rural low voltage networks, and rapidly detect a fault area in case of faults.
Description
Technical field
The present invention relates to low voltage electric network resist technology field, be specifically related to protective device for low voltage electric network.
Background technology
For many years, due to rural power grids rectification shortage of funding, the not high reason of rural economy level, the construction of rural low voltage network lags far behind the development of other side, equipment when many rural power grids are still for 60 ~ seventies and circuit, cause rural area and there is many urgent problems in electricity consumption.
Because the awareness of safety of peasant is poor, private is drawn and is disorderly connect phenomenon and still exist in some places.Such as, in busy farming season, peasant adopts mode such as hook line, middle wire etc., for son of thrashing, the son that threshes wheat, draws water; The peasant also had privately install electrical network for fishing, kill rats, antitheft etc.Also there are some bad habits in peasant's electricity consumption, such as, builds a house, piles faggot under power circuit, the electric equipments such as band electric moveable water pump, threshing machine, electric fan.From experience in the past, private is drawn and disorderly connect with bad consumption habit is the major reason causing electric shock accidents.
Because the phenomenon disorderly connect is drawn in these privates, cause rural power grids often can occur the phenomenon of tripping operation, and when staff can not find that short circuit or the drain conditions of random contact is drawn in private very soon, do not close total lock, and through repeatedly closing operation, damage other power distribution network parts possibly, or draw random contact to occur electric leakage accident in private.
Summary of the invention
Object of the present invention mainly in order to solve the problems of the technologies described above, and provides protective device for low voltage electric network.
The present invention includes low-voltage network body, described low-voltage network body is primarily of switchgear house, distribution wire, electric pole and subscriber unit composition, described subscriber unit is electrically connected with power output end of switchgear house by distribution wire, distribution wire is arranged in the customer group of subscriber unit composition by electric pole, described low-voltage network body also has protective device for low voltage electric network, described protective device for low voltage electric network comprises breaker module and one group of malfunction monitoring module, described breaker module comprises switchgear house main breaker, at least one node circuit breaker and subscriber unit circuit breaker, switchgear house main breaker is connected on the input circuit of switchgear house, the distribution wire of described low-voltage network body is provided with an assembly electrical nodes, described distribution node is concrete node location with electric pole, described node circuit breaker is installed in series at distribution Nodes, described subscriber unit circuit breaker is installed in series and enters in cable circuit at subscriber unit, described malfunction monitoring module comprises miniature malfunction counter, current sensor, microchip, circuit information storage element and query display unit, described miniature malfunction counter is arranged on the electric pole of distribution Nodes, current sensor, microchip, the surface-mounted integrated circuit of circuit information storage element and query display unit composition is arranged in miniature malfunction counter, current sensor is for monitoring the real-time current value of distribution wire, and by being stored in circuit information storage element after microchip process, query display unit and microchip are connected by communication, and for the current value of the corresponding timing node of query display.
Described low-voltage network body also has switchgear house monitoring module, described malfunction monitoring module also has wireless sending module, described wireless sending module and microchip are connected by communication, described switchgear house monitoring module is positioned at switchgear house, switchgear house monitoring module is made up of wireless receiving module and display large-screen, and described display large-screen is connected with wireless sending module wireless telecommunications by wireless receiving module.
Described node circuit breaker and subscriber unit circuit breaker are remote control of circuit breaker respectively, and the controller of described remote control of circuit breaker is positioned at switchgear house.
Operation is positioned at the controller difference Controlling vertex circuit breaker of switchgear house and the switching of subscriber unit circuit breaker.
Advantage of the present invention is: protective device for low voltage electric network of the present invention; apparatus structure is simple, and cost is low and install additional conveniently, can protect rural low voltage network; and in energy detection failure region rapidly of breaking down, there is good practicality and market popularization value.
Accompanying drawing explanation
Fig. 1 is principle of the invention schematic diagram.
In figure: 1, switchgear house; 2, distribution wire; 3, electric pole; 4, subscriber unit; 5, switchgear house main breaker; 6, node circuit breaker; 7, subscriber unit circuit breaker; 8, miniature malfunction counter; 9, current sensor; 10, microchip; 11, circuit information storage element; 12, query display unit; 13, wireless sending module; 14, wireless receiving module; 15, large-screen is shown; 16, the controller of remote control of circuit breaker.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, the present invention includes low-voltage network body, described low-voltage network body is primarily of switchgear house 1, distribution wire 2, electric pole 3 and subscriber unit 4 form, described subscriber unit 4 is electrically connected with power output end of switchgear house 1 by distribution wire 2, distribution wire 2 is arranged in the customer group of subscriber unit 4 composition by electric pole 3, described low-voltage network body also has protective device for low voltage electric network, described protective device for low voltage electric network comprises breaker module and one group of malfunction monitoring module, described breaker module comprises switchgear house main breaker 5, at least one node circuit breaker 6 and subscriber unit circuit breaker 7, switchgear house main breaker 5 is connected on the input circuit of switchgear house 1, the distribution wire 2 of described low-voltage network body is provided with an assembly electrical nodes, described distribution node is concrete node location with electric pole 3, described node circuit breaker 6 is installed in series at distribution Nodes, described subscriber unit circuit breaker 7 is installed in series and enters in cable circuit at subscriber unit 4, described malfunction monitoring module comprises miniature malfunction counter 8, current sensor 9, microchip 10, circuit information storage element 11 and query display unit 12, described miniature malfunction counter 8 is arranged on the electric pole 3 of distribution Nodes, current sensor 9, microchip 10, the surface-mounted integrated circuit that circuit information storage element 11 and query display unit 12 form is arranged in miniature malfunction counter 8, current sensor 9 is for monitoring the real-time current value of distribution wire 2, and be stored in circuit information storage element 11 after being processed by microchip 10, query display unit 12 and microchip 10 are connected by communication, and for the current value of the corresponding timing node of query display.
Described low-voltage network body also has switchgear house monitoring module, described malfunction monitoring module also has wireless sending module 13, described wireless sending module 13 is connected by communication with microchip 10, described switchgear house monitoring module is positioned at switchgear house 1, switchgear house monitoring module is made up of wireless receiving module 14 and display large-screen 15, and described display large-screen 15 is connected with wireless sending module 13 wireless telecommunications by wireless receiving module 14.
Described node circuit breaker 6 and subscriber unit circuit breaker 7 are remote control of circuit breaker respectively, and the controller 16 of described remote control of circuit breaker is positioned at switchgear house 1.
Operation is positioned at the controller 16 difference Controlling vertex circuit breaker 6 of switchgear house 1 and the switching of subscriber unit circuit breaker 7.
Working method and principle: disorderly connect phenomenon when power distribution network body occurs that private is drawn, and when causing electric leakage or short circuit thus, the node circuit breaker 6 being now positioned at this upstream, fault point detects short circuit current, trigger the tripping operation of its overload protection arrangement, if node circuit breaker 6 breaks down, switchgear house main breaker 5 plays a protective role as the second back-up breaker, after staff finds tripping operation power-off, need to make diagnosis to fault, the current levels of each distribution node of remote inquiry power-off time point now can be carried out by the display large-screen 15 being positioned at switchgear house 1, which region is positioned at by the recorded information failure judgement point of abnormal current value, after the node circuit breaker 6 of corresponding region being disconnected by the controller 16 of operating remote control circuit breaker again, close this all circuit breaker in circuit breaker front end again, recover supply of electric power, and send maintenance personal to go this node to carry out site examining and repairing, fix a breakdown, after can restore electricity completely.
Claims (4)
1. a protective device for low voltage electric network, comprise low-voltage network body, described low-voltage network body is primarily of switchgear house (1), distribution wire (2), electric pole (3) and subscriber unit (4) composition, described subscriber unit (4) is electrically connected with power output end of switchgear house (1) by distribution wire (2), distribution wire (2) is arranged in by electric pole (3) customer group that subscriber unit (4) forms, it is characterized in that described low-voltage network body also has protective device for low voltage electric network, described protective device for low voltage electric network comprises breaker module and one group of malfunction monitoring module, described breaker module comprises switchgear house main breaker (5), at least one node circuit breaker (6) and subscriber unit circuit breaker (7), switchgear house main breaker (5) is connected on the input circuit of switchgear house (1), the distribution wire (2) of described low-voltage network body is provided with an assembly electrical nodes, described distribution node with electric pole (3) for concrete node location, described node circuit breaker (6) is installed in series at distribution Nodes, described subscriber unit circuit breaker (7) is installed in series and enters in cable circuit at subscriber unit (4), described malfunction monitoring module comprises miniature malfunction counter (8), current sensor (9), microchip (10), circuit information storage element (11) and query display unit (12), described miniature malfunction counter (8) is arranged on the electric pole (3) of distribution Nodes, current sensor (9), microchip (10), the surface-mounted integrated circuit that circuit information storage element (11) and query display unit (12) form is arranged in miniature malfunction counter (8), current sensor (9) is for monitoring the real-time current value of distribution wire (2), and by being stored in circuit information storage element (11) after microchip (10) process, query display unit (12) and microchip (10) are connected by communication, and for the current value of the corresponding timing node of query display.
2. a kind of protective device for low voltage electric network according to claim 1, it is characterized in that described low-voltage network body also has switchgear house monitoring module, described malfunction monitoring module also has wireless sending module (13), described wireless sending module (13) and microchip (10) are connected by communication, described switchgear house monitoring module is positioned at switchgear house (1), switchgear house monitoring module is made up of wireless receiving module (14) and display large-screen (15), described display large-screen (15) is connected with wireless sending module (13) wireless telecommunications by wireless receiving module (14).
3. a kind of protective device for low voltage electric network according to claim 1; it is characterized in that described node circuit breaker (6) and subscriber unit circuit breaker (7) are remote control of circuit breaker respectively, and the controller of described remote control of circuit breaker (16) is positioned at switchgear house (1).
4. a kind of protective device for low voltage electric network according to claim 1 or 3, is characterized in that operating the switching of controller (16) difference Controlling vertex circuit breaker (6) and the subscriber unit circuit breaker (7) being positioned at switchgear house 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510659884.6A CN105162085A (en) | 2015-10-14 | 2015-10-14 | Low voltage network protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510659884.6A CN105162085A (en) | 2015-10-14 | 2015-10-14 | Low voltage network protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105162085A true CN105162085A (en) | 2015-12-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510659884.6A Pending CN105162085A (en) | 2015-10-14 | 2015-10-14 | Low voltage network protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105162085A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155620A (en) * | 2018-02-09 | 2018-06-12 | 王国裕 | A kind of informationization operation and maintenance equipment |
| CN111736507A (en) * | 2020-07-07 | 2020-10-02 | 广东电网有限责任公司梅州供电局 | Switching-on and switching-off control device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237024A (en) * | 1998-03-05 | 1999-12-01 | 东芝株式会社 | Controlling system, protection controlling system for power system and storage medium for storing program |
| CN101425672A (en) * | 2007-10-30 | 2009-05-06 | 通用电气公司 | System and method for control of power distribution networks |
| CN102142667A (en) * | 2010-01-22 | 2011-08-03 | 索尼公司 | Breaker and power monitoring system |
| CN102306930A (en) * | 2011-09-14 | 2012-01-04 | 渭南供电局 | Trip system of total residual current operated protector of distribution area and application method thereof |
| CN102570455A (en) * | 2012-01-12 | 2012-07-11 | 天津市电力公司 | Intelligent microgrid power-supply system |
-
2015
- 2015-10-14 CN CN201510659884.6A patent/CN105162085A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237024A (en) * | 1998-03-05 | 1999-12-01 | 东芝株式会社 | Controlling system, protection controlling system for power system and storage medium for storing program |
| CN101425672A (en) * | 2007-10-30 | 2009-05-06 | 通用电气公司 | System and method for control of power distribution networks |
| CN102142667A (en) * | 2010-01-22 | 2011-08-03 | 索尼公司 | Breaker and power monitoring system |
| CN102306930A (en) * | 2011-09-14 | 2012-01-04 | 渭南供电局 | Trip system of total residual current operated protector of distribution area and application method thereof |
| CN102570455A (en) * | 2012-01-12 | 2012-07-11 | 天津市电力公司 | Intelligent microgrid power-supply system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155620A (en) * | 2018-02-09 | 2018-06-12 | 王国裕 | A kind of informationization operation and maintenance equipment |
| CN111736507A (en) * | 2020-07-07 | 2020-10-02 | 广东电网有限责任公司梅州供电局 | Switching-on and switching-off control device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151216 |
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| WD01 | Invention patent application deemed withdrawn after publication |