CN215375633U - Distribution network fault positioning isolation device - Google Patents
Distribution network fault positioning isolation device Download PDFInfo
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- CN215375633U CN215375633U CN202120084882.XU CN202120084882U CN215375633U CN 215375633 U CN215375633 U CN 215375633U CN 202120084882 U CN202120084882 U CN 202120084882U CN 215375633 U CN215375633 U CN 215375633U
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- 238000002955 isolation Methods 0.000 title claims abstract description 54
- 230000005540 biological transmission Effects 0.000 claims description 18
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002091 elastography Methods 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
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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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- 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
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Abstract
The utility model relates to the technical field of fault location and isolation, and discloses a power distribution network fault location and isolation device which comprises a location and isolation device which is matched with each other and is arranged on each branch circuit and each main circuit, wherein each location and isolation device comprises a fault addresser, a voltage transformer, an intelligent switch box, a fuse and a cable circuit, the fault addresser, the voltage transformer, the intelligent switch box and the fuse are connected with each other through cables, the intelligent switch box comprises a feeder terminal and a circuit breaker, and one end of the intelligent switch box is electrically connected with a main station system. This distribution network fault location isolating device when 10kV distribution lines short-circuit fault, but the disconnection trouble short-circuit current, realizes that the trouble district section keeps apart and to the non-trouble district section commentaries on classics supply load, realizes the quick location and the accurate isolation of fault equipment by main website system, and non-fault equipment resumes the power supply fast to reduce the power failure scope, improve the power supply reliability of joining in marriage the net.
Description
Technical Field
The utility model relates to the technical field of fault location and isolation, in particular to a fault location and isolation device for a power distribution network.
Background
The electric network of China basically attacks the architecture of the original Soviet Union, and generally the voltage system of 66KV and below is called a distribution network. With the development of urban power grids and the continuous expansion of the scale of a power distribution network, faults of the power distribution network frequently occur, the power distribution network extends to all corners, the network is dense, the number of branches is large, the fault finding and removing are difficult, and therefore the economic loss is huge. At present, scientific research personnel in China also carry out some researches on a fault positioning method and a fault positioning device for a distribution line.
Some distribution network fault location isolating device on the existing market:
(1) in the safe use process, along with the continuous deep of urban and rural integrated construction, an outdoor 10kV power distribution network is rapidly developed and developed, in the past, the 10kV power distribution network mainly adopts a tree-shaped structure and is characterized by long lines, more branch lines, more connected distribution transformers, simple structure and poor reliability, so that the problem of poor use effect of the conventional power distribution network fault positioning and isolating device is caused;
(2) when the distribution network is in fault, due to the fact that a perfect positioning isolation system is not arranged, the quick positioning and accurate isolation of fault equipment cannot be achieved by a regulation and control center, and power supply cannot be quickly restored by non-fault equipment, so that the power failure range cannot be reduced, and the problem that the existing distribution network fault positioning isolation device is low in practical performance is caused.
We therefore propose a fault location isolation device for a power distribution network in order to solve the problems set out above.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In view of the defects in the prior art in the background art, the present invention aims to provide a power distribution network fault location and isolation device to solve the problems of simple structure, poor reliability and no perfect location and isolation system in some power distribution network fault location and isolation devices in the current market proposed in the background art.
(II) technical scheme
In order to achieve the purpose, the utility model is realized by the following technical scheme:
a power distribution network fault positioning and isolating device comprises positioning and isolating devices, a fault addresser, a voltage transformer, an intelligent switch box, a fuse, a feeder terminal, a circuit breaker and a cable line, wherein two ends of each positioning and isolating device are connected with cables, one end of one positioning and isolating device is connected with a transformer substation through the cable, the other end of the other positioning and isolating device is connected with a trunk line, two sides of one end of the trunk line are connected with branch lines, the positioning and isolating devices are mounted on the branch lines, and one ends of the branch lines are connected with power consumption units;
each branch line and the main line are respectively provided with a positioning isolation device which is matched with each other, each positioning isolation device comprises a fault addresser, a voltage transformer, an intelligent switch box and a fuse, and the fault addresser, the voltage transformer, the intelligent switch box and the fuse are connected with each other through cables;
the intelligent switch box comprises a feeder terminal and a circuit breaker, one end of the intelligent switch box is electrically connected with a main station system, and the output end of the main station system is electrically connected with a communication module in a bidirectional mode.
Preferably, the spacing distance between every two positioning isolation devices is twenty kilometers, the branch line, the trunk line, the power consumption unit and the transformer substation are all connected with the positioning isolation devices through cables, one end of each fault addresser is connected with the cables, and the other end of each fault addresser is connected with the voltage transformer through the cables.
Preferably, each upper end of the fault addresser is detachably connected with a cable, a fuse is installed between the voltage transformer and the fault addresser, the fuse is a drop-out fuse, the voltage transformer is integrally composed of an iron core, a primary winding and a secondary winding, and the other end of the voltage transformer is connected with the intelligent switch box through the cable.
Preferably, a feeder terminal and a circuit breaker are installed inside the intelligent switch box, the resolution of a remote signaling SOE of the feeder terminal is within 1ms, the storage space of the feeder terminal is 50 Mbytes, the feeder terminal is provided with two Ethernet interfaces, the hardware of the feeder terminal conforms to the standard DL/T721-2000 distribution network automation system remote terminal, and the software of the feeder terminal conforms to the transmission protocol of IEC 60870-5-104: 2009.
Further, feeder terminal fixed mounting is in the inside upper end of intelligent switch box, circuit breaker fixed mounting is at the inside lower extreme of intelligent switch box, one side of intelligent switch box is fixed with the pivot, one side of pivot is connected with the guard gate, the guard gate is connected with the cavity looks adaptation of intelligent switch box, the guard gate rotates with intelligent switch box through the pivot and is connected.
Furthermore, the fault addresser comprises a remote transmission fault addresser and a transformer station drop-out addresser, the trunk line adopts a matching mode of a section breaker terminal with a feeder line terminal and the remote transmission fault addresser, the branch line adopts a matching mode of installing the remote transmission fault addresser and the transformer station drop-out addresser, and the remote transmission fault addressers are installed at the joints of the cable line and the overhead line.
Further, install remote switch on the circuit breaker, remote switch's the output and the two-way electric connection of feeder terminal, the output and the two-way electric connection of master station system at feeder terminal, master station system and drop out fuse's output electric connection, drop out fuse's internally mounted has state acquisition module.
(III) advantageous effects
Compared with the prior art, the utility model has the beneficial effects that: this distribution network fault location isolating device:
(1) the fault addresser, the voltage transformer, the intelligent switch box and the fuse are mutually connected on the positioning isolation device through cables, a feeder terminal and a circuit breaker are installed inside the intelligent switch box, and when a 10kV distribution line has a short-circuit fault through the matching use of the intelligent switch box and a master station system, the fault short-circuit current can be cut off, so that the isolation of a fault section is realized, and a load is supplied to a non-fault section; simultaneously monitoring all electric quantity remote measurement values such as voltage, current and the like when the circuit normally operates; the fault addresser can display the characteristics of short circuit and power failure of a line and give an alarm through an indicator lamp to a line patrol worker to indicate the outgoing line, branch and section where the fault is located; the voltage transformer is used for measuring the voltage, power and electric energy of the line in cooperation with a feeder terminal, and meanwhile, valuable equipment, a motor and a transformer in the line can be protected when the line fails; the power failure range can be reduced through the fuse, the overall structure is compact, when the distribution network fails, the main station system is facilitated to realize quick positioning and accurate isolation of fault equipment, and non-fault equipment recovers power supply quickly, so that the power failure range is reduced, and the power supply reliability of the distribution network is improved.
(2) When the fault locator-isolator is used, a perfect locator-isolator system is formed by the feeder terminals, the fault addressers, the drop-out fuses and the master station system, when fault information is collected by the fault addressers, the feeder terminals configured for all intelligent switch boxes in a circuit upload state information and telemetering quantity to the master station system, the master station system determines the position of a fault point through the summary analysis of various information, sends out sound alarm and elastogram prompt in the system, sends short message prompt to relevant personnel, and sends the short message prompt to the relevant personnel to rush to the relevant sites for power maintenance and recovery work; the distribution network fault locating and isolating device has the advantages that the finding speed of the fault point of the distribution line is improved, the working intensity of accident treatment of distribution network operation and maintenance personnel is reduced, and the power supply reliability of the distribution network fault locating and isolating device is improved.
Drawings
FIG. 1 is a schematic diagram of a power supply line structure of a fault location and isolation device for a power distribution network according to the present invention;
FIG. 2 is a schematic overall structure diagram of the fault location and isolation device for the power distribution network according to the present invention;
FIG. 3 is a schematic structural diagram of a voltage transformer of the fault location and isolation device for a power distribution network according to the present invention;
FIG. 4 is a schematic structural diagram of an intelligent switch box of the fault location and isolation device for the power distribution network according to the utility model;
FIG. 5 is a schematic diagram of a fault addressor of the fault location and isolation device for the power distribution network according to the present invention;
FIG. 6 is a schematic structural diagram of the working principle of the feeder terminal of the fault location and isolation device for the power distribution network according to the present invention;
fig. 7 is a schematic structural diagram of a control principle of the fault location isolation device for the power distribution network.
In the figure: the intelligent power distribution system comprises a positioning isolation device 1, a branch line 2, a trunk line 3, an electricity consumption unit 4, a transformer substation 5, a fault addresser 6, a voltage transformer 7, an intelligent switch box 8, a fuse 9, a feeder terminal 10 and a circuit breaker 11.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a fault location and isolation device for a power distribution network; the intelligent power distribution system comprises positioning isolation devices 1, a fault addresser 6, voltage transformers 7, an intelligent switch box 8, a fuse 9, a feeder terminal 10, a circuit breaker 11 and a cable line, wherein cables are connected to two ends of each positioning isolation device 1, one end of one positioning isolation device 1 is connected with a transformer substation 5 through a cable, the other end of one positioning isolation device 1 is connected with a trunk line 3, branch lines 2 are connected to two sides of one end of the trunk line 3, the positioning isolation devices 1 are mounted on the branch lines 2, and one ends of the branch lines 2 are connected with power utilization units 4;
each branch line 2 and the trunk line 3 are respectively provided with a positioning isolation device 1 which is matched with each other, each positioning isolation device 1 comprises a fault addresser 6, a voltage transformer 7, an intelligent switch box 8 and a fuse 9, and the fault addresser 6, the voltage transformer 7, the intelligent switch box 8 and the fuse 9 are connected with each other through cables;
the intelligent switch boxes 8 respectively comprise feeder terminals 10 and circuit breakers 11, one ends of the intelligent switch boxes 8 are electrically connected with a master station system, and the output ends of the master station system are electrically connected with a communication module in a bidirectional mode;
as a preferred technical scheme of the utility model: the spacing distance between every two positioning isolation devices 1 is twenty kilometers, the branch line 2, the trunk line 3, the electricity consumption unit 4 and the transformer substation 5 are connected with the positioning isolation devices 1 through cables, one end of each fault addresser 6 is connected with the cables, the other end of each fault addresser 6 is connected with the voltage transformer 7 through the cables, the positioning isolation devices 1 are installed at the outlet of the transformer substation, faults inside or outside the substation can be known, when a 10kV distribution line has a short-circuit fault, the short-circuit current of the fault can be cut off, the isolation of a fault section is realized, and loads are supplied to a non-fault section; simultaneously monitoring all electric quantity remote measurement values such as voltage, current and the like when the circuit normally operates;
as a preferred technical scheme of the utility model: the upper end of each fault addresser 6 is detachably connected with a cable, a fuse 9 is installed between the voltage transformer 7 and the fault addresser 6, the fuse 9 is a drop-out fuse, the voltage transformer 7 is integrally composed of an iron core, a primary winding and a secondary winding, the other end of the voltage transformer 7 is connected with the intelligent switch box 8 through the cable, and the drop-out fuse has the characteristics of economy, convenience in operation, strong adaptability to outdoor environment and the like, and is widely applied to primary sides of 10kV distribution lines and distribution transformers for protection and equipment switching and switching. The power failure range can be reduced, and the power failure range has an obvious disconnection point, so that the power failure range has the function of an isolating switch, a safe operation environment is created for a line and equipment at a maintenance section, the safety of maintenance personnel is improved, and the safety performance of the power distribution network fault positioning isolating device is improved;
as a preferred technical scheme of the utility model: the intelligent switch box 8 is internally provided with a feeder terminal 10 and a circuit breaker 11, the resolution of a remote signaling SOE of the feeder terminal 10 is within 1ms, the storage space of the feeder terminal 10 is 50 Mbytes, the feeder terminal 10 is provided with two Ethernet interfaces, the hardware of the feeder terminal 10 conforms to the standard DL/T721-2000 remote terminal of a distribution network automation system, the software of the feeder terminal 10 conforms to the transmission protocol IEC 60870-5-104:2009, and the feeder terminal is an important monitoring device in the distribution automation system. As shown in fig. 6, the current and voltage signals of each branch line are amplified by a preamplifier for processing, the a/D converter is composed of a dedicated AD/a conversion module, and can transmit the amplified current and voltage signals to the feeder terminal 10, and execute a command issued by the distribution master station to adjust and control the distribution equipment, so as to achieve functions of fault location, fault isolation, and fast recovery of power supply in a non-fault area;
as a preferred technical scheme of the utility model: the feeder terminal 10 is fixedly installed at the upper end inside the intelligent switch box 8, the circuit breaker 11 is fixedly installed at the lower end inside the intelligent switch box 8, a rotating shaft is fixed at one side of the intelligent switch box 8, a protective door is connected to one side of the rotating shaft and is matched with a cavity of the intelligent switch box 8, and the protective door is rotatably connected with the intelligent switch box 8 through the rotating shaft, so that the feeder terminal 10 and the circuit breaker 11 can be well protected, and the feeder terminal 10 and the circuit breaker 11 can perform fault detection and information transmission more safely and reliably;
as a preferred technical scheme of the utility model: the fault addresser 6 comprises a remote transmission fault addresser and a transformer station drop-out addresser, the trunk line 3 adopts a matching mode of a section breaker 11 terminal with a feeder line terminal 10 and the remote transmission fault addresser, the branch line 2 adopts a matching mode of installing the remote transmission fault addresser and the transformer station drop-out addresser, the remote transmission fault addressers are installed at the joints of a cable line and an overhead line, and the trunk line adopts a matching mode of the section breaker terminal with the feeder line terminal and a fault indicator, so that the range of a fault section can be quickly reduced; the main branch line is provided with a matching mode of a feeder terminal intelligent circuit breaker terminal and a remote transmission fault addresser to quickly isolate faults; the requirement of rapidly searching fault points is realized by adopting a matching mode of installing a remote fault addressor and a transformer station drop-out addressor for a secondary branch line;
as a preferred technical scheme of the utility model: the remote control switch is installed on the circuit breaker 11, the output end of the remote control switch is electrically connected with the feeder terminal 10 in a bidirectional mode, the output end of the feeder terminal 10 is electrically connected with the master station system in a bidirectional mode, the master station system is electrically connected with the output end of the drop-out fuse, and the state acquisition module is installed inside the drop-out fuse, so that the master station system is composed of a central station, a server, background software and the like, the position of a fault point is determined through the summary analysis of various information, a sound alarm and a popup prompt are sent out in the system, and a short message prompt is sent to related personnel; the front-section circuit breaker of the fault point is pulled open by a regulation and control attendant in a remote control manner, the fault point isolation is completed, the non-fault section in front of the fault point is recovered for power transmission, and the using effect of the power distribution network fault positioning isolation device is improved.
The working principle of the embodiment is as follows: when the power distribution network fault positioning and isolating device is used, as shown in fig. 1, the whole device is composed of the positioning and isolating device 1, as shown in fig. 1 and 7, when a 10kV line has an interphase short-circuit fault, the positioning and isolating device 1 at the outlet of a transformer substation is tripped by a quick-break protection action, feeder terminals 9 configured in all intelligent switch boxes 8 in the line upload state information and telemetering quantity to a master station system, the master station system determines the position of a fault point through the summary analysis of various information, sends out sound alarm and elastography prompt in the system, sends short message prompt to related personnel, and sends the short message prompt to the related personnel to reach the related sites for power maintenance and recovery work;
as shown in fig. 2-5 and fig. 7, when the power distribution network fault positioning and isolating device is used, the distance between every two positioning and isolating devices 1 is twenty kilometers, the positioning and isolating devices 1 are connected with a fault addresser 6, a voltage transformer 7, an intelligent switch box 8 and a fuse 9 through cables, and then the positioning and isolating device is used in cooperation with a master station system, when a 10kV power distribution line has a short-circuit fault, a breaker 11 of the intelligent switch box 8 can cut off the fault short-circuit current, and simultaneously, a feeder terminal 10 monitors the voltage, current and other full electric quantity remote measurement values of the normal operation of the line, and when the fault addresser 6 gives an alarm to line patrol personnel through an indicator lamp to indicate the outgoing line, branch and section where the fault is located, so as to reduce the power outage range, and the personnel rush to the relevant places to perform power maintenance and recovery work;
as shown in fig. 6, the current and voltage signals of each branch line are amplified by the preamplifier, the amplified current and voltage signals are transmitted to the feeder terminal 10, and a command issued by the distribution master station is executed to adjust and control the distribution equipment, thereby implementing functions such as fault location, fault isolation, and fast recovery of power supply in a non-fault area. The above is the working process of the whole device, the above modules and electronic elements are all completed by adopting the existing mature commercial technology through simple modular construction and wireless network assembly, and the contents not described in detail in the specification all belong to the existing technologies known by professionals in the field.
Although the present invention has been described in detail with reference to the foregoing embodiments, it should be noted that, in the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, may be fixedly connected or detachably connected; or indirectly through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations; it will be apparent to those skilled in the art that modifications and equivalents may be made in the embodiments and/or portions thereof without departing from the spirit and scope of the present invention.
Claims (7)
1. A power distribution network fault positioning and isolating device comprises a positioning and isolating device (1), a fault addresser (6), a voltage transformer (7), an intelligent switch box (8), a fuse (9), a feeder terminal (10), a circuit breaker (11) and a cable line, and is characterized in that two ends of the positioning and isolating device (1) are connected with cables, one end of one of the positioning and isolating device (1) is connected with a transformer substation (5) through a cable, the other end of one of the positioning and isolating device (1) is connected with a trunk line (3), two sides of one end of the trunk line (3) are connected with branch lines (2), the positioning and isolating device (1) is mounted on each branch line (2), and one end of each branch line (2) is connected with an electricity consumption unit (4);
each branch line (2) and each trunk line (3) are respectively provided with a positioning isolation device (1) which is matched with each other, each positioning isolation device (1) comprises a fault addresser (6), a voltage transformer (7), an intelligent switch box (8) and a fuse (9), and the fault addresser (6), the voltage transformer (7), the intelligent switch box (8) and the fuse (9) are connected with each other through cables;
the intelligent switch box (8) comprises a feeder terminal (10) and a circuit breaker (11), one end of the intelligent switch box (8) is electrically connected with a master station system, and the output end of the master station system is electrically connected with a communication module in a two-way mode.
2. The distribution network fault location and isolation device according to claim 1, wherein the distance between every two location and isolation devices (1) is twenty kilometers, the branch line (2), the trunk line (3), the power consumption unit (4) and the substation (5) are all connected with the location and isolation devices (1) through cables, one end of each fault addressor (6) is connected with the cables, and the other end of each fault addressor (6) is connected with the voltage transformer (7) through the cables.
3. The distribution network fault locating and isolating device according to claim 1, characterized in that the upper end of each fault addresser (6) is detachably connected with a cable, a fuse (9) is installed between the voltage transformer (7) and the fault addresser (6), the fuse (9) is a drop-out fuse, the voltage transformer (7) is integrally composed of an iron core, a primary winding and a secondary winding, and the other end of the voltage transformer (7) is connected with the intelligent switch box (8) through a cable.
4. The distribution network fault locating and isolating device according to claim 1, characterized in that a feeder terminal (10) and a circuit breaker (11) are installed inside the intelligent switch box (8), the resolution of a remote signaling SOE of the feeder terminal (10) is within 1ms, the storage space of the feeder terminal (10) is 50 Mbytes, the feeder terminal (10) has two Ethernet interfaces, the hardware of the feeder terminal (10) conforms to the DL/T721-2000 distribution network automation system remote terminal standard, and the software of the feeder terminal (10) conforms to the IEC 60870-5-104:2009 transmission protocol.
5. The distribution network fault location and isolation device according to claim 1, wherein the feeder terminal (10) is fixedly installed at an upper end inside the intelligent switch box (8), the circuit breaker (11) is fixedly installed at a lower end inside the intelligent switch box (8), a rotating shaft is fixed at one side of the intelligent switch box (8), a protective door is connected at one side of the rotating shaft, the protective door is matched with a cavity of the intelligent switch box (8), and the protective door is rotatably connected with the intelligent switch box (8) through the rotating shaft.
6. The distribution network fault locating and isolating device according to claim 1, characterized in that the fault addresser (6) comprises a remote transmission fault addresser and a platform-changing drop-out addresser, the trunk line (3) adopts a matching mode of a section breaker (11) terminal with a feeder terminal (10) and the remote transmission fault addresser, the branch line (2) adopts a matching mode of installing the remote transmission fault addresser and the platform-changing drop-out addresser, and the remote transmission fault addressers are installed at the joints of the cable line and the overhead line.
7. The distribution network fault location and isolation device of claim 1, wherein a remote control switch is installed on the circuit breaker (11), an output end of the remote control switch is electrically connected with the feeder terminal (10) in a bidirectional mode, an output end of the feeder terminal (10) is electrically connected with a main station system in a bidirectional mode, the main station system is electrically connected with an output end of the drop-out fuse, and a state acquisition module is installed inside the drop-out fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120084882.XU CN215375633U (en) | 2021-01-13 | 2021-01-13 | Distribution network fault positioning isolation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120084882.XU CN215375633U (en) | 2021-01-13 | 2021-01-13 | Distribution network fault positioning isolation device |
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| Publication Number | Publication Date |
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| CN215375633U true CN215375633U (en) | 2021-12-31 |
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| CN202120084882.XU Expired - Fee Related CN215375633U (en) | 2021-01-13 | 2021-01-13 | Distribution network fault positioning isolation device |
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| CN (1) | CN215375633U (en) |
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2021
- 2021-01-13 CN CN202120084882.XU patent/CN215375633U/en not_active Expired - Fee Related
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