CN109655704A - Low-voltage insulation monitors system - Google Patents
Low-voltage insulation monitors system Download PDFInfo
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- CN109655704A CN109655704A CN201910016692.1A CN201910016692A CN109655704A CN 109655704 A CN109655704 A CN 109655704A CN 201910016692 A CN201910016692 A CN 201910016692A CN 109655704 A CN109655704 A CN 109655704A
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- voltage insulation
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- 238000009413 insulation Methods 0.000 title claims abstract description 87
- 238000012544 monitoring process Methods 0.000 claims abstract description 33
- 238000012806 monitoring device Methods 0.000 claims abstract description 31
- 238000004891 communication Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000009885 systemic effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
- H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Locating Faults (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of low-voltage insulations to monitor system, including low-voltage insulation monitoring cabinet, host computer and leakage current acquisition device；It include: insulation monitoring device, fault locator and controller in the low-voltage insulation monitoring cabinet, the insulation monitoring device and the fault locator are connected with the controller respectively；The host computer is connect with the controller by Ethernet；The leakage current acquisition device is set in the distribution loop between low-tension switch cabinet and low voltage equipment, and is connect by cable with the fault locator.The system structure is simple, and high reliablity, O&M cost are low.
Description
Technical field
The present invention relates to circuit detection technique fields, monitor system more particularly to a kind of low-voltage insulation.
Background technique
Currently, in low-voltage distribution system, be widely used disperse to install on the spot on low-tension switch cabinet leak detection relay or
The insulation monitoring device of other patterns, for detecting in low-voltage distribution circuit whether have current leakage.Although this mode can be with
Detect whether there is current leakage, but there are many drawbacks.Such as: insulation monitoring device dispersion is mounted in low-tension switch cabinet,
On the one hand very big inconvenience is brought to production maintenance, while causes low tension switch cabinet many and diverse, fault point is increased, and is reduced reliable
Property, increase O&M cost.
Summary of the invention
One of the technical issues of the present invention is directed to solve in the related technology at least to some extent.
For this purpose, the purpose of the present invention is to provide a kind of low-voltage insulations to monitor system, structure is simple, high reliablity, O&M
It is at low cost.
In order to achieve the above objectives, the present invention provides a kind of low-voltage insulation monitor system, including low-voltage insulation monitoring cabinet, on
Position machine and leakage current acquisition device；
It include: insulation monitoring device, fault locator and controller, the insulation prison in the low-voltage insulation monitoring cabinet
It surveys device and the fault locator is connected with the controller respectively；
The host computer is connect with the controller by Ethernet；
The leakage current acquisition device is set in the distribution loop between low-tension switch cabinet and low voltage equipment, and is passed through
Cable is connect with the fault locator.
According to one embodiment of present invention, the insulation monitoring device passes through cable and the low-tension switch cabinet and described
Cable connection between leakage current acquisition device.
According to one embodiment of present invention, the insulation monitoring device passes through cable and the low-tension switch cabinet and decompression
The cable connection of transformer bay.
According to one embodiment of present invention, the insulation monitoring device and the step-down transformer correspond；
The distribution loop is multiple, each corresponding leakage current acquisition device of the distribution loop；
The fault locator is at least one, and each fault locator corresponds at least one described electric leakage and adopts
Acquisition means.
According to one embodiment of present invention, the status indicator lamp of distribution loop is provided in the fault locator,
The status indicator lamp and the distribution loop correspond.
According to one embodiment of present invention, warning device, the alarm are additionally provided on the low-voltage insulation monitoring cabinet
Device is connect with the controller.
According to one embodiment of present invention, the system also includes temperature sensor, humidity sensor, multi-functional electricity
One of table is a variety of；
Wherein, the temperature sensor, the humidity sensor and the multifunction electric meter are connect with the controller.
According to one embodiment of present invention, 485 are provided on the fault location module and the insulation monitoring device
Communication interface, and the fault location module and the insulation monitoring device pass through 485 communication interface and the control
Device connection.
According to one embodiment of present invention, interchanger, the interchanger are additionally provided on the low-voltage insulation monitoring cabinet
One end connect with the controller, the other end of the interchanger is connect with the host computer.
According to one embodiment of present invention, a low-voltage insulation monitoring cabinet corresponds to more low-tension switch cabinets.
The one or more technical solutions provided in the embodiment of the present invention, have at least the following technical effects or advantages:
1, cabinet is monitored by setting electric leakage acquisition device and individual low-voltage insulation to monitor electric current in low-voltage distribution circuit
Leakage situation, simplify the structure of low-tension switch cabinet.
2, low-voltage insulation monitoring cabinet is connected between host computer by Ethernet, is realized to the long-range of low-voltage distribution circuit
Monitoring, so that staff need not check to scene, just will appreciate that the current leakage situation in current low-voltage distribution circuit.
3, cabinet is monitored by a low-voltage insulation and multiple leakage current acquisition devices is just able to detect that more low tension switches
The leakage current situation of cabinet, system structure is simple, and fault point is few, high reliablity, and O&M cost is low.
4, by electric network data, environmental data, low-voltage insulation monitoring data depth integration, subsystems is realized and are mutually handed over
It pitches, interpenetrate, information is mutually quoted, resource is mutually shared.
Detailed description of the invention
Fig. 1 is the system architecture diagram of the low-voltage insulation monitoring system of one embodiment disclosed by the invention；
Fig. 2 is the system architecture diagram of the low-voltage insulation monitoring system of another embodiment disclosed by the invention.
In figure:
1- low-voltage insulation monitors cabinet；
11- insulation monitoring device；12- fault locator；13- controller；14- warning device；15- temperature sensor；
16- humidity sensor；17- interchanger；18- ammeter；
2- host computer；
3- leakage current acquisition device；
4- low-tension switch cabinet；
5- low voltage equipment；
6- distribution loop；
7- step-down transformer.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the low-voltage insulation monitoring system of the embodiment of the present invention is described.
Fig. 1 is the system architecture diagram of the low-voltage insulation monitoring system of one embodiment disclosed by the invention.As shown in Figure 1,
The low-voltage insulation of the embodiment of the present invention monitors system, including low-voltage insulation monitoring cabinet 1, host computer 2 and leakage current acquisition device 3；
It includes: insulation monitoring device 11, fault locator 12 and controller 13, insulation monitoring device 11 that low-voltage insulation, which monitors in cabinet 1,
It is connected respectively with controller 13 with fault locator 12；Host computer 2 is connect with controller 13 by Ethernet；Leakage current acquisition
Device 3 is set in the distribution loop 6 between low-tension switch cabinet 4 and low voltage equipment 5, and passes through cable and fault locator
12 connections.In addition, being additionally provided with interchanger 17 on low-voltage insulation monitoring cabinet 1, one end of interchanger 17 passes through Ethernet and control
Device 13 processed connects, and the other end of interchanger 17 is connect by Ethernet with host computer 2.
Wherein, insulation monitoring device 11 is used to constantly inject alternating low frequency current signal into distribution loop 6, meanwhile,
The situation of change of its internal insulated mutual inductor monitoring low frequency leakage current, when leakage current exceeds systemic presupposition value, insulation
Malfunction indicator lamp on 11 panel of monitoring device lights, and has insulation fault to remind in staff's low-pressure system.
It is considered that insulation monitoring device 11 is it is possible that therefore the case where reporting by mistake is gone back in the present embodiment while being arranged
There is leakage current acquisition device 3 corresponding with 6 quantity of distribution loop, the leakage current in each distribution loop 6 be acquired,
And the signal of collected leakage current is sent to fault locator 12；Further, fault locator 12 will receive
To leakage current signal compared with systemic presupposition value；If leakage current signal exceeds systemic presupposition value, show that distribution returns
Insulation fault occurs for road 6, at this point, corresponding on 12 panel of fault locator light with short loop malfunction indicator lamp.Pass through this
The method of kind double check, improves the accuracy of detection.It should be noted that leakage current acquisition device 3 should be set to insulation
The downstream of monitoring device 11, so that leakage current acquisition device 3 can receive the current signal of the injection of insulation monitoring device 11.
For 11 Injection Current signal of insulation monitoring device position there are many kinds of, but must assure that its injection signal,
Can circulate each distribution loop 6 for needing to detect；Wherein, in the present embodiment, insulation monitoring device 11 need to be set to decompression
The low-pressure side of transformer 7.
As a kind of mode in the cards, as shown in Fig. 2, insulation monitoring device 11 passes through cable and low-tension switch cabinet 4
Cable connection between leakage current acquisition device 3.That is, separating and matching from the main signal cable of insulation monitoring device 11
The identical supported signal cable of 6 quantity of electrical circuit, the corresponding distribution loop 6 of every supported signal cable.
As the mode of alternatively possible realization, as shown in Figure 1, insulation monitoring device 11 passes through cable and low-tension switch cabinet
Cable connection between 4 and step-down transformer 7.
Further, it continues to refer to figure 1, insulation monitoring device 11 and step-down transformer 7 correspond；Distribution loop 6 is
One or more, the corresponding leakage current acquisition device 3 of each distribution loop 6；Fault locator 12 is at least one, each
At least one the corresponding electric leakage acquisition device of fault locator 12.For example, there are ten distribution loops 6 at present, at this point, each
A leakage current acquisition device 3 is provided in distribution loop 6；And the quantity of fault locator 12 can be one, it can also
Think two, etc.；When fault locator 12 is one, its own corresponds to ten leakage current acquisition devices 3, when failure is fixed
When position device 12 is two, at this moment each fault locator 12 can correspond to five leakage current acquisition devices 3, specifically can basis
Depending on actual conditions.Wherein, in fig. 1 and 2, distribution loop 6 is four, and leakage current acquisition device 3 is also four, and failure is fixed
Position device 12 is one, i.e. the corresponding four leakage current acquisition devices of a fault locator.
In order to accurately know the distribution loop 6 for insulation fault occur, distribution is provided in fault locator 12
The status indicator lamp in circuit 6, status indicator lamp and distribution loop 6 correspond, when insulation event occurs in one of distribution loop 6
When barrier, corresponding status indicator lamp will be lighted.Staff can be enable quickly to learn occurring insulation fault in this way
Distribution loop 6, and respond, improve working efficiency, reduce O&M cost.
In the present embodiment, the signal of itself detection can be all sent to by insulation monitoring device 11 and fault locator 12
Controller 13, and host computer 2 is sent to by controller 13, so that the long-range monitoring to low-voltage distribution circuit 6 is realized, so that work
Making personnel need not check to scene, just will appreciate that the current leakage situation in current low-voltage distribution circuit 6.In addition, insulating monitoring
485 communication interfaces are provided on device 11 and fault location module, and insulation monitoring device 11 and fault location module pass through
485 communication interfaces are connect with controller 13.
It is additionally provided with warning device 14 on low-voltage insulation monitoring cabinet 1, warning device 14 is connect with controller 13.Alarm dress
Setting 14 can be, but not limited to be buzzer, combined aural and visual alarm etc..
In order to get temperature/humidity in environment, low-voltage insulation monitor system further include: temperature sensor 15 and/or
Humidity sensor 16, temperature sensor 15 and humidity sensor 16 are connect with controller 13.Wherein, temperature sensor 15 and/
Or humidity sensor 16 can according to the actual situation, the position of choice arrangement, e.g., can monitor cabinet 1 with low-voltage insulation and be arranged in together
In one room, outdoor, etc. can also be arranged in.
It should be understood that in the present embodiment, a low-voltage insulation monitoring cabinet 1 can correspond to a low-tension switch cabinet 4,
More low-tension switch cabinets 4 can also be corresponded to, specifically can according to the actual situation depending on.It is additionally provided in low-voltage insulation monitoring cabinet 1
Power supply provides power supply for monitoring each device in cabinet 1 for low-voltage insulation.
Further, controller 13 can also be according to user demand, and the multifunction electric meter 18 being connected with low-tension switch cabinet 4 is adopted
It is communicated with serial communication protocol (for example, MODBUS or PROFIBUS) etc., is opened acquiring low pressure by multifunction electric meter 18
While closing 4 energy consumption data of cabinet, the state and reality of panel switches in low-tension switch cabinet 4 can be also acquired by multifunction electric meter 18
Now panel switches are remotely controlled.
It should be understood that can be by signal wire/cable connection between each device in the present embodiment, it specifically can root
It is selected, is not limited thereto according to actual conditions.In addition, controller can be, but not limited to be programmable logic controller (PLC).
In conclusion provided in the embodiment of the present invention low-voltage insulation monitoring system, at least have the following technical effect that or
Advantage:
1, cabinet is monitored by setting electric leakage acquisition device and individual low-voltage insulation to monitor electric current in low-voltage distribution circuit
Leakage situation, simplify the structure of low-tension switch cabinet.
2, low-voltage insulation monitoring cabinet is connected between host computer by Ethernet, is realized to the long-range of low-voltage distribution circuit
Monitoring, so that staff need not check to scene, just will appreciate that the current leakage situation in current low-voltage distribution circuit.
3, cabinet is monitored by a low-voltage insulation and multiple leakage current acquisition devices is just able to detect that more low tension switches
The leakage current situation of cabinet, system structure is simple, and fault point is few, high reliablity, and O&M cost is low.
4, by electric network data, environmental data, low-voltage insulation monitoring data depth integration, subsystems is realized and are mutually handed over
It pitches, interpenetrate, information is mutually quoted, resource is mutually shared.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of low-voltage insulation monitors system, which is characterized in that including low-voltage insulation monitoring cabinet, host computer and leakage current acquisition dress
It sets；
It include: insulation monitoring device, fault locator and controller, the insulating monitoring dress in the low-voltage insulation monitoring cabinet
It sets and is connected respectively with the controller with the fault locator；
The host computer is connect with the controller by Ethernet；
The leakage current acquisition device is set in the distribution loop between low-tension switch cabinet and low voltage equipment, and passes through cable
It is connect with the fault locator.
2. low-voltage insulation according to claim 1 monitors system, which is characterized in that the insulation monitoring device passes through cable
With the cable connection between the low-tension switch cabinet and the leakage current acquisition device.
3. low-voltage insulation according to claim 1 monitors system, which is characterized in that the insulation monitoring device passes through cable
With the cable connection between the low-tension switch cabinet and step-down transformer.
4. low-voltage insulation according to claim 3 monitors system, which is characterized in that the insulation monitoring device and the drop
Pressure transformer corresponds；
The distribution loop is multiple, each corresponding leakage current acquisition device of the distribution loop；
The fault locator is at least one, and each fault locator corresponds at least one described electric leakage acquisition dress
It sets.
5. low-voltage insulation according to claim 4 monitors system, which is characterized in that be provided in the fault locator
The status indicator lamp of distribution loop, the status indicator lamp and the distribution loop correspond.
6. low-voltage insulation according to claim 5 monitors system, which is characterized in that also set on the low-voltage insulation monitoring cabinet
It is equipped with warning device, the warning device is connect with the controller.
7. low-voltage insulation according to claim 1 monitors system, which is characterized in that the system also includes: temperature sensing
One of device, humidity sensor, multifunction electric meter are a variety of；
The temperature sensor, the humidity sensor and the multifunction electric meter are connect with the controller.
8. system according to claim 1-7, which is characterized in that the fault location module and insulation prison
It surveys on device and is provided with 485 communication interfaces, and the fault location module and the insulation monitoring device pass through described 485 and lead to
Communication interface is connect with the controller.
9. system according to claim 8, which is characterized in that it is additionally provided with interchanger on the low-voltage insulation monitoring cabinet,
One end of the interchanger is connect with the controller, and the other end of the interchanger is connect with the host computer.
10. system according to claim 9, which is characterized in that a low-voltage insulation monitoring cabinet corresponds to more low pressure
Switchgear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910016692.1A CN109655704B (en) | 2019-01-08 | 2019-01-08 | Low-voltage insulation monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910016692.1A CN109655704B (en) | 2019-01-08 | 2019-01-08 | Low-voltage insulation monitoring system |
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| CN109655704A true CN109655704A (en) | 2019-04-19 |
| CN109655704B CN109655704B (en) | 2024-07-26 |
Family
ID=66119139
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- 2019-01-08 CN CN201910016692.1A patent/CN109655704B/en active Active
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| CN209764972U (en) * | 2019-01-08 | 2019-12-10 | 中国恩菲工程技术有限公司 | Low-voltage insulation monitoring system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109655704B (en) | 2024-07-26 |
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