CN112782447A - Intelligent fuse is fused to one secondary - Google Patents
Intelligent fuse is fused to one secondary Download PDFInfo
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- CN112782447A CN112782447A CN202011605869.0A CN202011605869A CN112782447A CN 112782447 A CN112782447 A CN 112782447A CN 202011605869 A CN202011605869 A CN 202011605869A CN 112782447 A CN112782447 A CN 112782447A
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- 238000001514 detection method Methods 0.000 claims abstract description 86
- 230000004927 fusion Effects 0.000 claims abstract description 45
- 238000004891 communication Methods 0.000 claims abstract description 31
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims description 14
- 229910052573 porcelain Inorganic materials 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 5
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 14
- 230000008030 elimination Effects 0.000 abstract description 10
- 238000003379 elimination reaction Methods 0.000 abstract description 10
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009421 internal insulation Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/04—Voltage dividers
- G01R15/06—Voltage dividers having reactive components, e.g. capacitive transformer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
-
- 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
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/027—Integrated apparatus for measuring current or voltage
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention belongs to the technical field of fuses, and particularly relates to a primary-secondary fusion intelligent fuse which comprises a fuse body, a voltage detection unit, a current detection unit, a drop detection unit and a remote communication unit; the voltage detection unit and the current detection unit monitor the voltage and the current of the branch line of the transformer area in real time and transmit the monitored voltage and current data to the remote transmission communication unit in real time; the drop detection unit monitors the state of a fuse tube of the fuse in real time and transmits monitoring data to the remote transmission communication unit in real time; and the remote transmission communication unit analyzes and judges the running conditions of the line and the fuse according to the received data, and sends the analysis and judgment result to the platform area intelligent terminal or the power grid master station system background in real time. The primary and secondary fusion intelligent fuse solves the problems that a 10kV fuse in the prior art is lack of effective monitoring management, voltage and current of a transformer area branch line are lack of effective monitoring, and long-term efficiency of line fault elimination time is low.
Description
Technical Field
The invention belongs to the technical field of fuses, and particularly relates to a primary and secondary fusion intelligent fuse.
Background
The 10kV drop-out fuse is a short-circuit protection switch most commonly used for 10kV distribution line branch lines and distribution transformers, is widely applied to primary sides of the 10kV distribution lines and the distribution transformers for protection and equipment switching and cutting operation, and is important primary equipment for ensuring safe operation of a distribution network. At present, a 10kV drop-out fuse operated in a hanging network only has basic switching operation and short-circuit fault cutting and isolating functions, an effective state monitoring means is lacked, operation and maintenance personnel need to check station areas one by one to confirm fault positions after line faults and power failure, the lack eliminating process is long and inefficient, and the power failure recovery time is long.
Disclosure of Invention
The invention aims to provide a primary-secondary fusion intelligent fuse, which solves the problems that a 10kV fuse at the present stage is lack of effective monitoring management, voltage and current of a transformer area branch line are lack of effective monitoring, and long-term efficiency of line fault elimination time is low.
In order to achieve the purpose, the invention adopts the following technical scheme:
a one-time and two-time fusion intelligent fuse,
the fuse comprises a fuse body, a voltage detection unit, a current detection unit, a drop detection unit and a remote transmission communication unit;
the voltage detection unit and the current detection unit monitor the voltage and the current of the branch line of the transformer area in real time and transmit the monitored voltage and current data to the remote transmission communication unit in real time;
the drop detection unit monitors the state of a fuse tube of the fuse in real time and transmits monitoring data to the remote transmission communication unit in real time;
and the remote transmission communication unit analyzes and judges the running conditions of the line and the fuse according to the received data, and sends the analysis and judgment result to the platform area intelligent terminal or the power grid master station system background in real time.
When the power distribution station line fails and the fuse is in a normal conduction working state, the remote transmission communication unit uploads the received line voltage, current and fuse state to the station intelligent terminal or the power grid master station system background in real time.
When a branch line of a distribution substation has a short-circuit fault and a fuse tube of a fuse drops, the remote communication unit automatically judges the fault type according to data sent by the voltage, current and drop detection unit, and sends fault warning information and fault positioning information to a substation intelligent terminal or a power grid master station system, so that operation and maintenance personnel can conveniently perform on-site fault elimination processing.
The voltage detection unit, the current detection unit, the drop detection unit and the remote communication unit are all arranged on the fuse body.
And the remote transmission communication unit reports the data to the platform area intelligent terminal or the power grid master station background system through a short-distance wireless or narrow-band Internet of things.
Preferably, the drop detection unit is arranged at the upper end of the fusion tube and close to the 10kV side, and a mechanical and electrical dual detection module is arranged in the drop detection unit, so that the position information of the fusion tube can be monitored in real time and converted into the state quantity. A position detection device and a current detection device are arranged in the drop detection device, the position detection device comprises a connecting bus, a travel switch moving contact and a moving contact, a position sensor, a limiting device and a fixed connecting piece, wherein the connecting bus is used for connecting a 10kV side with the fixed connecting piece to ensure that a line is in conductive connection in a normal state; the current measuring module is arranged on the connecting bus and used for measuring the current in real time; the travel switch moving and static contacts and the position sensor are positioned between the fusion tube and the busbar, and whether the travel switch falls is judged through the deformation of different positions of the fusion tube; the limiting device is arranged beside the travel switch and used for protection; the insulating protective cover is arranged above the whole falling detection unit and used for integral protection; the arc extinguishing cover installation reservation device is on insulating protective housing, if need, mountable arc extinguishing cover for the arc extinguishing and protect function when manual deciliter fuse.
The detection principle of the falling detection unit is as follows: through the cooperation of a travel switch and a position sensor which are installed in an upper hardware fitting of a fusion tube, position information with obvious difference can be respectively measured under two states of 'closing' and 'falling' of the fusion tube and converted into analog quantity, a 'displacement' event is considered to occur when the analog quantity exceeds a threshold value, meanwhile, a current measuring module measures the current passing through a fuse in real time, and similarly, if the current falls to exceed the threshold value, the 'current mutation' event is sent, the two events are synchronously reported, and the 'falling' event of the fuse is determined to occur on site.
Preferably, the voltage detection unit adopts a capacitance voltage division measurement method, and the high-voltage capacitor, the low-voltage capacitor and the connecting wire are placed in the insulating porcelain bottle through a customized insulating porcelain bottle and an innovative structural design, wherein the insulating porcelain bottle is hollow, so that the capacitor module can be successfully placed while the insulation and support strength is met; the capacitor voltage division low-voltage part is arranged above the capacitor voltage division low-voltage part, and the ground potential and the 10kV potential position are adjusted, so that the voltage measurement can be successfully carried out under the condition that the requirements of internal insulation strength and safe wiring are met.
Preferably, the current detection unit comprises a current sensor, a fixing device, a connecting wire and the like, is located above the fusion tube and close to the 10kV side, and is installed on the connecting busbar when the device is used, current measurement is carried out through the Rogowski coil, and the current detection unit is collected to the main control unit through the current wire.
The primary and secondary fusion intelligent fuse disclosed by the invention introduces a novel 10kV voltage detection unit, a current detection unit, a drop detection unit and a remote communication unit on the basis of the traditional 10kV drop fuse, and organically combines primary and secondary equipment into a whole. The primary and secondary fusion intelligent fuse can realize the following functions:
(1) monitoring various electrical quantities and state quantities of a 10kV distribution line and a drop-out fuse, and reporting data to a platform area intelligent terminal or a power grid master station background system through a short-distance wireless or NB (NB), so that field equipment is effectively monitored and managed;
(2) the method has the advantages that the voltage and current data of the branch line of the transformer area are collected at high precision and can be used for line loss measurement;
(3) after the short circuit fault occurs to the line, the equipment can automatically judge the fault type and report fault alarm and positioning information, thereby greatly facilitating the fault elimination work of operation and maintenance personnel and reducing the power failure time.
Advantageous effects
The invention discloses a primary-secondary fusion intelligent fuse, which solves the problems that a 10kV fuse at the present stage is lack of effective monitoring management, voltage and current of a transformer area branch line are lack of effective monitoring, and long-term efficiency of line fault elimination time is low. The primary and secondary fusion intelligent fuse has the following beneficial effects:
(1) a novel electronic voltage transformer is designed for a traditional fuse, the fuse has the 10kV voltage and current detection function, and primary and secondary equipment fusion is realized.
(2) The voltage and current detection precision is high, and the method can be directly used for line loss measurement.
(3) The method has a positioning function, directly judges the fault type after the fault and reports the fault position, and facilitates the elimination of the fault of the line.
(4) Possess the fusion tube and fall the detection function, mechanical type falls the detection unit reliable and stable.
(5) The structure and the installation mode of the existing fuse product are not changed, and the installation and the maintenance are convenient.
(6) The system can be directly communicated with the existing platform area intelligent terminal on site, and the deployment cost is low.
Drawings
Fig. 1 is a schematic structural diagram of a primary and secondary fusion intelligent fuse described in embodiment 1 of this patent;
FIG. 2 is a schematic diagram of data exchange of the primary and secondary fuse intelligent fuses described in embodiment 1 of this patent;
FIG. 3 is a schematic structural diagram of a drop detection device in accordance with embodiment 1 of the present invention when a fusion tube is dropped;
in the figure, 1: a fuse body; 2: a voltage detection unit; 3: a current detection unit; 4: a drop detection unit; 5: a remote communication unit; 6: 10KV distribution line load side; 7: the power supply side of the 10KV distribution line; 8: a fusion tube; 9: an insulating porcelain insulator; 10: connecting a busbar; 11: a current sensor; 12: a pressure sensor; 13: a travel switch; 14: a position sensor.
Detailed Description
Hereinafter, the present invention will be described in detail. Before the description is made, it should be understood that the terms used in the present specification and the appended claims should not be construed as limited to general and dictionary meanings, but interpreted based on the meanings and concepts corresponding to technical aspects of the present invention on the basis of the principle that the inventor is allowed to define terms appropriately for the best explanation. Accordingly, the description proposed herein is just a preferable example for the purpose of illustrations only, not intended to limit the scope of the invention, so it should be understood that other equivalents and modifications could be made thereto without departing from the spirit and scope of the invention.
The following examples are given by way of illustration of embodiments of the invention and are not to be construed as limiting the invention, and it will be understood by those skilled in the art that modifications may be made without departing from the spirit and scope of the invention.
Example 1
As shown in fig. 1, a primary and secondary fuse intelligent fuse,
the fuse protector comprises a fuse protector body 1, a voltage detection unit 2, a current detection unit 3, a drop detection unit 4 and a remote transmission communication unit 5;
as shown in fig. 2, the voltage detection unit and the current detection unit monitor the voltage and the current of the branch line in the transformer area in real time, and transmit the monitored voltage and current data to the remote communication unit in real time;
the drop detection unit monitors the state of a fuse tube of the fuse in real time and transmits monitoring data to the remote transmission communication unit in real time;
and the remote transmission communication unit analyzes and judges the running conditions of the line and the fuse according to the received data, and sends the analysis and judgment result to the platform area intelligent terminal or the power grid master station system background in real time.
When the power distribution station line fails and the fuse is in a normal conduction working state, the remote transmission communication unit uploads the received line voltage, current and fuse state to the station intelligent terminal or the power grid master station system background in real time.
When a branch line of a distribution substation has a short-circuit fault and a fuse tube of a fuse drops, the remote communication unit automatically judges the fault type according to data sent by the voltage, current and drop detection unit, and sends fault warning information and fault positioning information to a substation intelligent terminal or a power grid master station system, so that operation and maintenance personnel can conveniently perform on-site fault elimination processing.
The voltage detection unit, the current detection unit, the drop detection unit and the remote communication unit are all arranged on the fuse body.
And the remote transmission communication unit reports the data to the platform area intelligent terminal or the power grid master station background system through a short-distance wireless or narrow-band Internet of things.
The drop detection unit is arranged at the upper end of the fusion tube and close to the 10kV side, and a mechanical and electrical dual detection module is arranged in the drop detection unit, so that the position information of the fusion tube can be monitored in real time and converted into state quantity.
The fall detection unit includes: the device comprises a connecting bus, a current measuring module, moving and static contacts of a travel switch, a position sensor, a limiting device, a fixed connecting piece, an insulating protective cover and an arc extinguishing cover installation reservation device, wherein the connecting bus is used for connecting a 10kV side with the fixed connecting piece to ensure the conduction connection of a line in a normal state; the current measuring module is arranged on the connecting bus and used for measuring the current in real time; the travel switch moving and static contacts and the position sensor are positioned between the fusion tube and the busbar, and whether the travel switch falls is judged through the deformation of different positions of the fusion tube; the limiting device is arranged beside the travel switch and used for protection; the insulating protective cover is arranged above the whole falling detection unit and used for integral protection; the arc extinguishing cover installation reservation device is on insulating protective housing, if need, mountable arc extinguishing cover for the arc extinguishing and protect function when manual deciliter fuse.
The detection principle of the falling detection unit is as follows: through the cooperation of a travel switch and a position sensor which are installed in an upper hardware fitting of a fusion tube, position information with obvious difference can be respectively measured under two states of 'closing' and 'falling' of the fusion tube and converted into analog quantity, a 'displacement' event is considered to occur when the analog quantity exceeds a threshold value, meanwhile, a current measuring module measures the current passing through a fuse in real time, and similarly, if the current falls to exceed the threshold value, the 'current mutation' event is sent, the two events are synchronously reported, and the 'falling' event of the fuse is determined to occur on site.
The voltage detection unit adopts a capacitance voltage division measurement method, and places a high-voltage capacitor, a low-voltage capacitor and a connecting wire in an insulating porcelain bottle through a customized insulating porcelain bottle and an innovative structural design, wherein the insulating porcelain bottle is hollow, so that a capacitor module can be successfully placed in the insulating porcelain bottle while the insulating and supporting strength is met; the capacitor voltage division low-voltage part is arranged above the capacitor voltage division low-voltage part, and the ground potential and the 10kV potential position are adjusted, so that the voltage measurement can be successfully carried out under the condition that the requirements of internal insulation strength and safe wiring are met.
The current detection unit contains current sensor, fixing device, connecting wire etc. and current detection unit is located the fusion tube top, is close to the 10kV side, and during the device used, install on connecting female arranging, carries out current measurement through the luo shi coil, gathers to the main control unit through the electric current line and gathers.
The primary and secondary fusion intelligent fuse disclosed by the invention introduces a novel 10kV voltage detection unit, a current detection unit, a drop detection unit and a remote communication unit on the basis of the traditional 10kV drop fuse, and organically combines primary and secondary equipment into a whole. The primary and secondary fusion intelligent fuse can realize the following functions:
(1) monitoring various electrical quantities and state quantities of a 10kV distribution line and a drop-out fuse, and reporting data to a platform area intelligent terminal or a power grid master station background system through a short-distance wireless or NB (NB), so that field equipment is effectively monitored and managed;
(2) the method has the advantages that the voltage and current data of the branch line of the transformer area are collected at high precision and can be used for line loss measurement;
(3) after the short circuit fault occurs to the line, the equipment can automatically judge the fault type and report fault alarm and positioning information, thereby greatly facilitating the fault elimination work of operation and maintenance personnel and reducing the power failure time.
The primary-secondary fusion intelligent fuse solves the problems that a 10kV fuse at the present stage is lack of effective monitoring management, voltage and current of a transformer area branch line are lack of effective monitoring, and long-term efficiency of line fault elimination time is low. The primary and secondary fusion intelligent fuse has the following beneficial effects:
(1) a novel electronic voltage transformer is designed for a traditional fuse, the fuse has the 10kV voltage and current detection function, and primary and secondary equipment fusion is realized.
(2) The voltage and current detection precision is high, and the method can be directly used for line loss measurement.
(3) The method has a positioning function, directly judges the fault type after the fault and reports the fault position, and facilitates the elimination of the fault of the line.
(4) Possess the fusion tube and fall the detection function, mechanical type falls the detection unit reliable and stable.
(5) The structure and the installation mode of the existing fuse product are not changed, and the installation and the maintenance are convenient.
(6) The system can be directly communicated with the existing platform area intelligent terminal on site, and the deployment cost is low.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011605869.0A CN112782447A (en) | 2020-12-30 | 2020-12-30 | Intelligent fuse is fused to one secondary |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011605869.0A CN112782447A (en) | 2020-12-30 | 2020-12-30 | Intelligent fuse is fused to one secondary |
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| Publication Number | Publication Date |
|---|---|
| CN112782447A true CN112782447A (en) | 2021-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011605869.0A Pending CN112782447A (en) | 2020-12-30 | 2020-12-30 | Intelligent fuse is fused to one secondary |
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| Country | Link |
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| CN (1) | CN112782447A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115693657A (en) * | 2022-11-11 | 2023-02-03 | 国网山东省电力公司东营供电公司 | Intelligent fusing system and method for fault location of distribution automation master station |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969547A (en) * | 2013-11-19 | 2014-08-06 | 上海诚意电气有限公司 | 10kV drop-out fuse online monitoring system |
| CN111077443A (en) * | 2019-12-30 | 2020-04-28 | 江苏紫喻智能科技有限公司 | Drop switch monitoring device |
| CN211086526U (en) * | 2019-11-27 | 2020-07-24 | 国网宁夏电力有限公司电力科学研究院 | A drop-out fuse monitoring system |
| CN214226851U (en) * | 2020-12-30 | 2021-09-17 | 山东梅格彤天电气有限公司 | Multifunctional fuse |
| CN214224480U (en) * | 2020-12-30 | 2021-09-17 | 山东梅格彤天电气有限公司 | Drop detection device for fuse |
-
2020
- 2020-12-30 CN CN202011605869.0A patent/CN112782447A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969547A (en) * | 2013-11-19 | 2014-08-06 | 上海诚意电气有限公司 | 10kV drop-out fuse online monitoring system |
| CN211086526U (en) * | 2019-11-27 | 2020-07-24 | 国网宁夏电力有限公司电力科学研究院 | A drop-out fuse monitoring system |
| CN111077443A (en) * | 2019-12-30 | 2020-04-28 | 江苏紫喻智能科技有限公司 | Drop switch monitoring device |
| CN214226851U (en) * | 2020-12-30 | 2021-09-17 | 山东梅格彤天电气有限公司 | Multifunctional fuse |
| CN214224480U (en) * | 2020-12-30 | 2021-09-17 | 山东梅格彤天电气有限公司 | Drop detection device for fuse |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115693657A (en) * | 2022-11-11 | 2023-02-03 | 国网山东省电力公司东营供电公司 | Intelligent fusing system and method for fault location of distribution automation master station |
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