CN209086369U - A kind of distribution low-voltage cable junction box state monitoring apparatus - Google Patents

A kind of distribution low-voltage cable junction box state monitoring apparatus Download PDF

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Publication number
CN209086369U
CN209086369U CN201821889884.0U CN201821889884U CN209086369U CN 209086369 U CN209086369 U CN 209086369U CN 201821889884 U CN201821889884 U CN 201821889884U CN 209086369 U CN209086369 U CN 209086369U
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module
power
junction box
monitoring apparatus
state monitoring
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CN201821889884.0U
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汪泓
刘剑
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WUHAN TEST TECHNOLOGY CO LTD
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WUHAN TEST TECHNOLOGY CO LTD
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Abstract

The utility model discloses a kind of distribution low-voltage cable junction box state monitoring apparatus, the state monitoring apparatus includes main control module, communication module, position of the switch monitoring modular, invade monitoring modular, temperature and humidity measurement module, indicating module, electrical parameter measuring module, temperature-measuring module and power module, the main control module uses low-power consumption MCU, for being still able to maintain the alert notice of a period of time after route power loss, the communication module uses physical layer for the communication modes of LoRa, avoidance is done on this basis, distance, anti-interference and power consumption optimization simultaneously encapsulates upper-layer protocol, the electrical parameter measuring module includes CT, PT and electrical parameter metering unit module, the power module includes power supply and backup power source.The utility model is by being equipped with state monitoring apparatus, switch motion, the monitoring and combinatory analysis of busbar excess temperature, cabinet door event, environmental abnormality state are protected for low-voltage cable junction box power loss, overcurrent, leakage, realize the long-range active forewarning of feeder pillar, discovery in time and investigation problem, improve the working efficiency and power supply reliability of operation maintenance personnel.

Description

A kind of distribution low-voltage cable junction box state monitoring apparatus
Technical field
The utility model relates to smart grid distribution technique field, in particular to a kind of distribution low-voltage cable junction box state Monitoring device.
Background technique
Distribution at present has covered the monitoring to 10kV route and the acquisition of user side electrical parameter data, and distribution platform The monitoring relative absence always of the low-pressure side fortune inspection data in area.The monitoring system of distribution low-voltage platform area is mounted under distribution transformer It holds in total outlet, can be with the total load situation of monitor station area transformer, but the daily monitoring of each low pressure branch outlet is lacked, and it is low Voltage cable feeder pillar is electrical equipment particularly important in low pressure branched line, and the stability of work directly affects subscribers' line Reliability service.
Authorized announcement date is on 04 29th, 2015, and Authorization Notice No. is that the Chinese invention patent of CN104578429A discloses A kind of " cable branch box on-line operation monitors system ", for the high-voltage cable end box of 6kV, 10kV and the above voltage proposes one Kind on-line monitoring system, including measurement analysis module, voltage acquisition module, current acquisition module, temperature collecting module, communication mould Block, power module, display module, sound and light alarm module, corona flashover detection module, long-range portable terminal, central site network service Device etc..
The deficiency of this technical solution lies in that 1, battery bring potential risk: being wrapped in the system power supply module Containing battery, to guarantee that system can also work normally when cable run powers off, but since cable branch box is installed on open air, High temperature season, the temperature inside the box after exposure can be higher, is easy to cause the secondary disasters such as accumulator explosion, and in low temperature season Section, and will lead to the problems such as charging is difficult, battery vigor is inadequate;2, include communication module in the system, but do not refer to tool The communication modes of body, in such monitoring system, communication modes are directly related to stability, data safety, efficiency, the fortune of system Cost etc. is sought, it is particularly important in the entire system.
Authorized announcement date is on 03 14th, 2012, and Authorization Notice No. is the Chinese utility model patent of CN202167821U Disclose " a kind of monitor controller of cable branch box ", which is characterized in that including chief inspector's observing and controlling unit module, power supply mould Block, memory module, GPRS module, display apparatus module, door sensor detection module, each monitoring mould being distributed in inside cable branch box Block, chief inspector's observing and controlling unit module are examined with power module, memory module, GPRS module, display apparatus module, door sensor respectively Module, the connection of each monitoring modular are surveyed, the power module is connect with each monitoring modular respectively.
The deficiency of this technical solution lies in that 1, described device is communicated using GPRS module, third party's operation need to be relied on Quotient's network communicates, and Information Security is unreliable, and the later period, there is also operation costs;2, described device is only completed to cable point The measurement of temperature and humidity, a cable loop tie point temperature and built-in electrical insulation component dielectric strength inside branch case is far not enough to anti- Reflect the working condition of cable branch box;3, described device power module uses " suspension takes electricity " mode, does not refer to when cable power loss Processing mode afterwards.
Therefore, it invents a kind of distribution low-voltage cable junction box state monitoring apparatus and carrys out the monitoring of distribution low-voltage platform area branched line The problem of data relative absence.
Utility model content
The purpose of this utility model is to provide a kind of distribution low-voltage cable junction box state monitoring apparatus, by being equipped with shape State monitoring device, it is different for low-voltage cable junction box power loss, overcurrent, the position of the switch, busbar excess temperature, cabinet door event, environment The monitoring and combinatory analysis of normal state, realize the long-range active forewarning of feeder pillar, and discovery in time and investigation problem improve O&M people The working efficiency and power supply reliability of member can be assisted in conjunction with the information that electrical parameter measuring module and position of the switch monitoring modular acquire With discriminatory analysis failure cause, fault point is locked for operation maintenance personnel, analysis foundation is provided, shorten the repair time, promote power supply service Level, to solve the problems, such as to come distribution low-voltage platform area branched line monitoring data relative absence.
To achieve the above object, the utility model provides the following technical solutions: a kind of distribution low-voltage cable junction box state Monitoring device, including state monitoring apparatus, the state monitoring apparatus include main control module, communication module, position of the switch monitoring Module, intrusion monitoring modular, temperature and humidity measurement module, indicating module, electrical parameter measuring module, temperature-measuring module and power supply mould Block, the main control module uses low-power consumption MCU, described for being still able to maintain the alert notice of a period of time after route power loss Electrical parameter measuring module includes CT, PT and electrical parameter metering unit module, and the power module includes power supply and standby electricity Source, the state monitoring apparatus connecting pin are equipped with location status inductor, and the location status inductor is mounted on earth leakage protective On device, the earth leakage protective device is connected with inlet wire cable, and the state monitoring apparatus connects limit switches inductor, and electric leakage is protected Shield device, earth leakage circuit-breaker, location status inductor, state monitoring apparatus and limit switch inductor are all set in low-voltage cable Feeder pillar box house, the low-voltage cable junction box cabinet outside are equipped with antenna.
Preferably, the state monitoring apparatus transmits data based on the communication mode that physical layer is LoRa, on this basis It does avoidance, distance, anti-interference and power consumption optimization and encapsulates upper-layer protocol.
Preferably, the main control module connecting pin is respectively equipped with communication module, position of the switch monitoring modular, intrusion monitoring mould Block, temperature and humidity measurement module, indicating module, electrical parameter measuring module, temperature-measuring module and power module and pass through transmission line Cable connection.
Preferably, the power module uses AC/DC module to take voltage for other function module normal power supply from lead-in wire terminal, The backup power source uses super capacitor, and when route has electricity, power supply cuts its lasting charging automatically after route power loss Change backup power source super capacitor supply access.
Preferably, the electrical parameter measuring module acquires earth leakage protective device leading-out terminal three-phase voltage, three-phase current, wattful power Rate, the electrical parameter information of reactive power, the position of the switch monitoring modular are connected to position detecting switch, believe by isolation input Number detection circuit is connected to main control module, obtains the operating position of earth leakage circuit-breaker, and the position of the switch monitoring modular and electricity are joined Number measurement module may make up collaboration breakdown judge.
Preferably, the temperature-measuring module acquires three-phase bus bar temperature, actively issues busbar when being more than given threshold Warning information is overheated, the intrusion monitoring modular is connected to and is used with door status switch disconnecting switch amount input signal detection, is used for Detection record cabinet door switch events;The temperature and humidity measurement module is for detecting working environment temperature in low-voltage cable junction box cabinet Humidity actively issues environment abnormity early warning information in case when being more than given threshold, and the temperature and humidity measurement module is using instruction Lamp display device power supply, working condition, communication state, alert status information.
The technical effect and advantage of the utility model:
1, by be equipped with state monitoring apparatus, for low-voltage cable junction box power loss, overcurrent, the position of the switch, busbar excess temperature, The long-range active forewarning of feeder pillar is realized in the monitoring and combinatory analysis of cabinet door event, environmental abnormality state, in time discovery and Investigation problem improves the working efficiency and power supply reliability of operation maintenance personnel, monitors in conjunction with electrical parameter measuring module and the position of the switch The information of module acquisition, can cooperate with discriminatory analysis failure cause, lock fault point for operation maintenance personnel and provide analysis foundation, shorten inspection It repairs the time, it is horizontal to promote power supply service;
2, the state monitoring apparatus is communicated based on the communication modes and host computer concentrator that physical layer is LoRa, due to Low-voltage platform area scene is complicated, and being easy to be blocked by intensive building causes signal decaying to cause loss of data, the utility model dress Set itself have routing relay function, between device can mutually forwarding number factually show wireless signal effective avoidance;
3, it by using the communication modes based on LoRa, not only ensure that the distance of data communication, and evaded walking third Square network channel bring Information Security problem, the characteristic of low-power consumption, which additionally aids, under power failure state ensures continuing for communication Property;
4, by being equipped with using wide temperature range type super capacitor as back-up power source, the information under solving device power failure state While resuming problem, and potential security hidden trouble brought by battery will not be introduced.
Detailed description of the invention
Fig. 1 is arrangement and connection schematic diagram of the utility model in low-voltage cable junction box;
Fig. 2 is the condition checkout gear schematic diagram of internal structure of the utility model;
Fig. 3 is the work flow diagram of the utility model;
Fig. 4 is without data communication method under the conditions of obvious shelter;
Fig. 5 is to have data communication method under the conditions of obvious shelter;
In figure: 1 low-voltage cable junction box cabinet, 2 inlet wire cables, 3 earth leakage protective devices, 31 connection sockets, 4 earth leakage protectives are opened Pass, 5 position detecting switch, 6 state monitoring apparatus, 61 main control modules, 62 communication modules, 63 position of the switch monitoring modulars, 64 are invaded Enter monitoring modular, 65 temperature and humidity measurement modules, 66 indicating modules, 67 electrical parameter measuring modules, 68 temperature-measuring modules, 69 power supplys Module, 7 door status switch, 8 outlet cables, 9 antennas.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment one:
The utility model provides a kind of distribution low-voltage cable junction box state monitoring apparatus as shown in Figs. 1-2, including State monitoring apparatus 6, the state monitoring apparatus 6 include main control module 61, communication module 62, position of the switch monitoring modular 63, Invade monitoring modular 64, temperature and humidity measurement module 65, indicating module 66, electrical parameter measuring module 67,68 and of temperature-measuring module Power module 69, the main control module 61 uses low-power consumption MCU, for being still able to maintain the alarm of a period of time after route power loss Notice, the electrical parameter measuring module 67 include CT, PT and electrical parameter metering unit module, and the power module 69 includes power supply Power supply and backup power source, 6 connecting pin of state monitoring apparatus are equipped with location status inductor 5, the location status inductor 5 To detect the position of the switch of earth leakage circuit-breaker 4, the location status inductor 5 is mounted on earth leakage protective device 3, the leakage Non-electricity protector 3 is connected with inlet wire cable 2, and the state monitoring apparatus 6 connects limit switches inductor 7, earth leakage protective device 3, Earth leakage circuit-breaker 4, location status inductor 5, state monitoring apparatus 6 and limit switch inductor 7 are all set in low-voltage cable Inside branch's box body 1, antenna 9 is equipped on the outside of the low-voltage cable junction box cabinet 1.
The state monitoring apparatus based on physical layer be LoRa communication mode transmit data, do on this basis avoidance, Distance, anti-interference and power consumption optimization simultaneously encapsulate upper-layer protocol, have remote communication distance, low-power consumption, are not necessarily to third party's net Network fully ensures that the advantages of Information Security.
The present embodiment leads under the dispersion of low-voltage cable junction box installation site, route power failure state the utility model has the advantages that comprehensively considering News are uninterrupted, data upload these factors of safety, and utility model device uses physical layer for the communication mode of LoRa, together When do avoidance, distance, anti-interference and power consumption optimization, encapsulate upper-layer protocol, remote, low-power consumption, nothing with communication distance The advantages that needing third party's network to fully ensure that Information Security, the concentrator apparatus for receiving data is mountable at platform area, by platform The limitation of area's radius of electricity supply, the low-voltage cable junction box of destage area farthest can also communicate within coverage area, thus communication away from From being sufficient for application demand.
Embodiment two:
61 connecting pin of main control module is respectively equipped with communication module 62, position of the switch monitoring modular 63, intrusion monitoring mould Block 64, temperature and humidity measurement module 65, indicating module 66, electrical parameter measuring module 67, temperature-measuring module 68 and power module 69 And it is connected to by transmission cable.
The power module 69 uses AC/DC module to take voltage for other function module normal power supply from lead-in wire terminal, described Backup power source uses super capacitor, and when route has electricity, power supply automatically switches standby its lasting charging after route power loss With power supply super capacitor supply access.
The electrical parameter measuring module 67 acquires earth leakage protective device leading-out terminal three-phase voltage, three-phase current, active power, nothing The electrical parameters information such as function power, the position of the switch monitoring modular 63 are connected to location status inductor 5, examine by input signal Slowdown monitoring circuit is connected to main control module 61, obtains the operating position of earth leakage circuit-breaker, and the position of the switch monitoring modular 63 is joined with electricity Number measurement module 67 may make up collaboration breakdown judge.
The temperature-measuring module 68 acquires three-phase bus bar temperature, and it is pre- that busbar overheat is actively issued when being more than given threshold Alert information, the intrusion monitoring modular 64 are connected to and are used with limit switch inductor 7 disconnecting switch amount input signal detection, use Cabinet door switch events are recorded in detection;The temperature and humidity measurement module 65 is for detecting work in low-voltage cable junction box cabinet 1 Ambient temperature and humidity actively issues environment abnormity early warning information in case, the temperature and humidity measurement module 65 when being more than given threshold Using indicator light display device power supply, working condition, communication state, alert status information.
The present embodiment is the utility model has the advantages that be directed to low-voltage cable junction box power loss, overcurrent, the position of the switch, busbar excess temperature, switchgear The monitoring and combinatory analysis of door event, the state of environmental abnormality, realize the long-range active forewarning of feeder pillar, discovery in time and investigation Problem improves the working efficiency and power supply reliability of operation maintenance personnel, monitors mould in conjunction with electrical parameter measuring module 67 and the position of the switch The information that block 63 acquires, can cooperate with discriminatory analysis failure cause, lock fault point for operation maintenance personnel and provide analysis foundation, shorten inspection It repairs the time, power supply service level is promoted, by being equipped with using super capacitor as back-up power source, in solving device power loss shape While information resumes problem under state, and potential security hidden trouble brought by battery will not be introduced, while status monitoring fills Setting 6 is to be communicated based on LoRa communication modes and host computer concentrator, and its own has routing relay function, can phase between device Mutual forwarding number factually shows useful signal avoidance.
Embodiment three:
Referring to Figure of description 4 and Fig. 5, Figure of description 4 is without data communication method under the conditions of obvious shelter, explanation Book attached drawing 5 is to have data communication method under the conditions of obvious shelter;
Wherein state monitoring apparatus 6 is logical based on LoRa in low-voltage cable junction box cabinet 1 under the conditions of without obvious shelter News mode is directly communicated with concentrator, realizes that the remote of data stablizes transmission and monitoring;It is multiple low in the case where there is obvious shelter 1 internal state monitoring device 6 of voltage cable branch box body its own have routing relay function, can mutually forwarding number factually now believe Number effective avoidance, and mutually convert data by multiple state monitoring apparatus 6 and be transmitted to concentrator, passed using multi-stage relay The defeated reliable guarantee for realizing communication.
This practical working principle:
Referring to Figure of description 3: the specific steps being monitored by the present apparatus are as follows:
S10 step: apparatus for initializing, startup self-detection, each hardware module and software initialization work;
S20 step: periodically reporting, and checks whether poll time reaches, if calling time on not up to, continues standby;
S30 step: monitoring data acquisition notifies each measurement module, the corresponding each monitoring data of acquisition by main control module 61;
S40 step: doing decision analysis on the spot to collected every monitoring data, check whether occur power loss, overcurrent, The state of environmental abnormality enters early warning mechanism if there is at least one abnormal state in busbar overheat, cabinet;
S50 step: each measurement module active upload monitors main control module 61, and S20 step is returned to after having executed;
S60 step: survey order is called together by the sending of main control module 61, is immediately performed S30 step;
S70 step: at any time, intrusion monitoring modular 64 once detects door opening action, issues enabling thing immediately Part order enters interruption, executes early warning mechanism immediately;
S80 step: at any time, position of the switch monitoring modular 63 once detects that the position of the switch changes, and stands It issues the order of position of the switch change events and enters interruption, execute early warning mechanism immediately;
S90 step: early warning mechanism is executed according to anomalous event and the monitoring data of acquisition and determines early warning code, simultaneously Upload monitoring data;
S100 step: executing early warning mechanism, completes sound-light alarm movement by indicating module 66;
S110 step: check whether that receiving alarm condition eliminates order, if not receiving, is immediately performed S30 step again Detecting state executes S20 step and exits early warning mechanism and return to standby mode if having been received by.
Referring to Figure of description 1 and Fig. 2: for low-voltage cable junction box power loss, overcurrent, the position of the switch, busbar excess temperature, opening The monitoring and combinatory analysis for closing cabinet door event, environmental abnormality state, realize the long-range active forewarning of feeder pillar, discovery in time and row Topic is interrogated, the working efficiency and power supply reliability of operation maintenance personnel are improved, monitors mould in conjunction with electrical parameter measuring module and the position of the switch The information of block acquisition, can cooperate with discriminatory analysis failure cause, lock fault point for operation maintenance personnel and provide analysis foundation, shorten maintenance Time promotes power supply service level, and using super capacitor as back-up power source, information is continuous under solving device power failure state While arraign is inscribed, and potential security hidden trouble brought by battery will not be introduced.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic It is equivalently replaced, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should should be included within the scope of protection of this utility model.

Claims (6)

1. a kind of distribution low-voltage cable junction box state monitoring apparatus, including state monitoring apparatus (6), it is characterised in that: described State monitoring apparatus (6) includes main control module (61), communication module (62), position of the switch monitoring modular (63), intrusion monitoring mould Block (64), temperature and humidity measurement module (65), indicating module (66), electrical parameter measuring module (67), temperature-measuring module (68) and Power module (69), the main control module (61) uses low-power consumption MCU, for being still able to maintain a period of time after route power loss Alert notice, the electrical parameter measuring module (67) include CT, PT and electrical parameter metering unit module, the power module (69) Including power supply and backup power source, state monitoring apparatus (6) connecting pin is equipped with location status inductor (5), institute's rheme The position of the switch of the state sensor (5) to detect earth leakage circuit-breaker (4) is set, the location status inductor (5) is mounted on On earth leakage protective device (3), the earth leakage protective device (3) is connected with inlet wire cable (2), and the state monitoring apparatus (6) is connected with Limit switch inductor (7), earth leakage protective device (3), earth leakage circuit-breaker (4), location status inductor (5), status monitoring dress It sets (6) and limit switch inductor (7) is all set in low-voltage cable junction box cabinet (1) inside, the low-voltage cable junction box Antenna (9) are equipped on the outside of cabinet (1).
2. a kind of distribution low-voltage cable junction box state monitoring apparatus according to claim 1, it is characterised in that: the shape State monitoring device (6) transmits data based on the communication mode that physical layer is LoRa, does avoidance, distance, anti-interference on this basis And power consumption optimization and encapsulate upper-layer protocol.
3. a kind of distribution low-voltage cable junction box state monitoring apparatus according to claim 1, it is characterised in that: the master Control module (61) connecting pin is respectively equipped with communication module (62), position of the switch monitoring modular (63), intrusion monitoring modular (64), temperature Humidity measurement module (65), indicating module (66), electrical parameter measuring module (67), temperature-measuring module (68) and power module (69) and by transmission cable it is connected to.
4. a kind of distribution low-voltage cable junction box state monitoring apparatus according to claim 1, it is characterised in that: the electricity Source module (69) uses AC/DC module to take voltage for other function module normal power supply from lead-in wire terminal, and the backup power source uses Super capacitor, when route has electricity, power supply automatically switches backup power source super electricity to its lasting charging after route power loss Hold supply access.
5. a kind of distribution low-voltage cable junction box state monitoring apparatus according to claim 1, it is characterised in that: the electricity Parameters measurement module (67) acquires the electricity ginseng such as earth leakage protective device leading-out terminal three-phase voltage, three-phase current, active power, reactive power Number information, the position of the switch monitoring modular (63) are connected to location status inductor (5), connect by circuit for checking input signals To main control module (61), the operating position of earth leakage circuit-breaker is obtained, the position of the switch monitoring modular (63) and electrical parameter are surveyed Amount module (67) may make up collaboration breakdown judge.
6. a kind of distribution low-voltage cable junction box state monitoring apparatus according to claim 1, it is characterised in that: the temperature It spends measurement module (68) and acquires three-phase bus bar temperature, busbar overheat warning information is actively issued when being more than given threshold, it is described It invades monitoring modular (64) to be connected to limit switch inductor (7) and use disconnecting switch amount input signal detection, for detecting Record cabinet door switch events;The temperature and humidity measurement module (65) is for detecting low-voltage cable junction box cabinet (1) interior building ring Border temperature and humidity actively issues environment abnormity early warning information in case, the temperature and humidity measurement module (65) when being more than given threshold Using indicator light display device power supply, working condition, communication state, alert status information.
CN201821889884.0U 2018-11-16 2018-11-16 A kind of distribution low-voltage cable junction box state monitoring apparatus Active CN209086369U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114256971A (en) * 2021-11-30 2022-03-29 宁海县雁苍山电力建设有限公司 Remote control type cable branch box monitoring terminal device
EP4010889A4 (en) * 2019-08-08 2023-08-16 CommScope Technologies LLC Alarm verification system for electronics cabinet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4010889A4 (en) * 2019-08-08 2023-08-16 CommScope Technologies LLC Alarm verification system for electronics cabinet
CN114256971A (en) * 2021-11-30 2022-03-29 宁海县雁苍山电力建设有限公司 Remote control type cable branch box monitoring terminal device

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