CN215772636U - Intelligent drop-out fuse with primary and secondary deep fusion - Google Patents
Intelligent drop-out fuse with primary and secondary deep fusion Download PDFInfo
- Publication number
- CN215772636U CN215772636U CN202121705697.4U CN202121705697U CN215772636U CN 215772636 U CN215772636 U CN 215772636U CN 202121705697 U CN202121705697 U CN 202121705697U CN 215772636 U CN215772636 U CN 215772636U
- Authority
- CN
- China
- Prior art keywords
- power
- drop
- power supply
- taking
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Protection Of Static Devices (AREA)
Abstract
The utility model discloses a primary and secondary depth fusion intelligent drop-out fuse, which comprises a drop-out fuse, a power-taking CT, a measuring CT and a measuring and controlling device, wherein a 10kV line is connected into the drop-out fuse through an incoming terminal, and is sequentially connected with the power-taking CT and the measuring CT, and is connected with an outgoing terminal through a fusion tube; the output ends of the electricity taking CT and the measuring CT are respectively connected to the measurement and control device; the measurement and control device comprises a power module and a controller; the power-taking CT is connected into the power module, the output of the power-taking CT is converted into a controller working power supply through the power module, the measured CT is output to the controller, the line current is obtained through A/D sampling and calculation, and the controller judges whether interphase short circuit occurs or not. This practicality will get electric CT, measure CT, measurement and control device and high-voltage fuse fusion tube and carry out the integrated design, provide the high reliable, low-cost transformation scheme of drop out high-voltage fuse intelligent transformation.
Description
Technical Field
The utility model relates to the field of power distribution internet of things, in particular to an intelligent drop-out fuse.
Background
The power distribution internet of things is an important component of the ubiquitous power internet of things. The power distribution internet of things is an information physical system with deep integration of the traditional industrial technology and the internet of things technology, comprehensive sensing, data integration and intelligent application of a power distribution network are achieved through comprehensive interconnection, intercommunication and interoperation among power distribution network devices, the demand of lean management of the power distribution network is met, the rapid development of the energy internet is supported, and the power distribution network is a power distribution network in a new generation of power system. In an application form, the power distribution internet of things has the characteristics of plug and play of terminals, wide interconnection of equipment, comprehensive state perception, application mode upgrading, quick service iteration, efficient resource utilization and the like.
The market demands promote the access of the Internet of things of mass equipment, the fusion of multi-service data, the precipitation of common data service and service application, and develop the micro-service of the services such as distribution network operation and inspection, marketing service, new energy load and the like based on edge service and regional autonomy. The application of the intelligent drop-out fuse is definitely provided. However, the current situation that the states of drop-out fuses largely applied to the user demarcation points of the existing power distribution network cannot be monitored in real time is solved.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims to provide a primary and secondary deep fusion intelligent drop-out fuse scheme with equipotential design, aiming at overcoming the problem that the states of drop-out fuses widely applied to user demarcation points of the existing power distribution network cannot be monitored in real time.
The technical scheme is as follows: the utility model relates to a primary and secondary depth fusion intelligent drop-out fuse, which comprises a drop-out fuse, a power taking CT, a measuring CT and a measurement and control device, wherein a 10kV line is connected into the drop-out fuse through an incoming terminal, is sequentially connected with the power taking CT and the measuring CT, and is connected with an outgoing terminal through a fusion tube;
the output ends of the electricity taking CT and the measuring CT are respectively connected to the measurement and control device;
the measurement and control device comprises a power module and a controller;
the power-taking CT is connected into the power module, the output of the power-taking CT is converted into a controller working power supply through the power module, the measured CT is output to the controller, the line current is obtained through A/D sampling and calculation, and the controller judges whether interphase short circuit occurs and controls the drop-out fuse to work.
According to a further preferable technical scheme, the power taking CT and the power supply module form a small current starting power taking circuit, the output of the power taking CT is output through a rectifier bridge, filtered by a first electrolytic capacitor and regulated to DC5V by clamping current, then the output of the power taking CT is filtered by the electrolytic capacitor to output a direct current signal DC5V, and the direct current signal DC 5/DC is converted into a DC3.3V working power supply through a first DC/DC chip to supply power to the controller.
Preferably, the power module is connected with a backup power charging and discharging circuit, and the backup power charging and discharging circuit is a super capacitor charging and discharging management circuit;
the super capacitor charge-discharge management circuit comprises a super capacitor, a second DC/DC conversion chip, a third DC/DC conversion chip charge-discharge controller, a super capacitor charge management circuit and a super capacitor discharge management circuit, when the input current meets the requirement of full-speed operation of the measurement and control device, the charge-discharge controller controls the charge of the super capacitor, VCC stabilized by the power supply module is the input power supply of the super capacitor charge-discharge management current, and VSCF converted by the second DC/DC chip into DC2.7V charges the super capacitor;
when the line is in voltage loss or the input current cannot meet the power-taking requirement of the measurement and control device, the charge and discharge controller controls the super capacitor to discharge the VSCF, and the VSCF is converted into DC3.3V single-chip microcomputer working power supply through the third DC/DC chip.
Preferably, the backup power supply charging and discharging circuit further comprises a backup battery management circuit, the backup battery management circuit comprises a backup battery and a fourth DC/DC conversion chip, when the line is in voltage loss or the input current cannot meet the power-taking requirement of the measurement and control device, and when the super capacitor is in voltage loss, the backup battery provides a working power supply for the measurement and control device, and the output of the backup battery is converted into DC3.3V working power supply through the fourth DC/DC chip to supply power for the controller.
Preferably, the measurement and control device further comprises a drop-out fuse position signal detection circuit which comprises a three-axis acceleration sensor, the controller reads angle data of the three-axis acceleration sensor, and the controller judges whether a fusion tube of the drop-out fuse is in a normal working state or a drop-out state according to calculation; the working power supply of the triaxial acceleration sensor is provided by the power supply module, the controller controls the on-off of the working power supply of the triaxial acceleration sensor, the working power supply of the triaxial acceleration sensor is turned on when the data of the triaxial acceleration sensor is read, and the working power supply of the triaxial acceleration sensor is turned off at other times.
Preferably, the controller is a single chip microcomputer STM32L433VCT 6.
Preferably, the drop-out fuse comprises a wire inlet terminal, a fusion tube pull ring, a fusion tube, a fuse wire, a wire outlet terminal, a mounting bracket and an insulator, wherein the wire inlet terminal, the fusion tube pull ring, the electricity taking CT, the measurement CT, the fusion tube, the fuse wire, the wire outlet terminal, the mounting bracket, the insulator and the measurement and control device are integrally designed and are mounted on a telegraph pole through the mounting bracket.
Has the advantages that: the utility model integrates the electricity taking CT, the measurement and control device and the high-voltage fuse fusion tube, thereby realizing the intellectualization of the drop-out high-voltage fuse. The small current satisfies the operation of the measurement and control device, the battery really becomes a backup power supply, the current situation that the medium-voltage user demarcation point on-line monitoring device depends on the battery is thoroughly solved, and the service life of the product is greatly prolonged; the two-remote monitoring function is realized by replacing the fusion tube under the condition that the circuit is not powered off, the installation is simple, the operation and maintenance are simple, and a high-reliability and low-cost transformation scheme for intelligently transforming the drop-out high-voltage fuse is provided.
Drawings
Fig. 1 is a schematic structural diagram of a primary and secondary deep fusion intelligent drop-out fuse of the present invention;
FIG. 2 is a schematic block diagram of a primary and secondary depth fusion intelligent drop-out fuse of the present invention;
FIG. 3 is a circuit diagram of the low current start-up circuit of the present invention;
FIG. 4 is a circuit diagram of the super capacitor charge and discharge management circuit of the present invention;
FIG. 5 is a backup battery management circuit diagram of the present invention;
FIG. 6 is a drop out fuse position signal detection circuit diagram of the present invention;
in the figure, 1-line terminal; 2-a fusion tube pull ring; 3-getting electricity CT; 4-measuring CT; 5-melting the tube; 6-outlet terminal; 7-mounting a bracket; 8, an insulator; 9-a measurement and control device.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example (b): a primary and secondary depth fusion intelligent drop-out fuse comprises a drop-out fuse, a power taking CT3, a measuring CT4 and a measurement and control device 9. The drop-out fuse comprises an incoming line terminal 1, a fusion tube pull ring 2, a fusion tube 5, a fuse wire, an outgoing line terminal 6, a mounting bracket 7 and an insulator 8, wherein the incoming line terminal 1, the fusion tube pull ring 2, a power taking CT3, a measuring CT4, the fusion tube 5, the fuse wire, the outgoing line terminal 6, the mounting bracket 7, the insulator 8 and a measurement and control device 9 are integrally designed and are mounted on a telegraph pole through the mounting bracket 7. The 10kV line is connected to the drop-out fuse through the incoming line terminal 1, and is sequentially connected with the electricity taking CT3 and the measuring CT4, and is connected with the outgoing line terminal 6 through the fusion tube 5.
The output ends of the electricity taking CT3 and the measuring CT4 are respectively connected to the measurement and control device 9, the measurement and control device 9 comprises a power module and a controller, and the controller is a single chip microcomputer STM32L433VCT 6. The power taking CT3 is connected to a power supply module, the output of the power taking CT3 is converted into a controller working power supply through the power supply module, the measured CT3 is output to the controller, the circuit current is obtained through A/D sampling and calculation, and the controller judges whether interphase short circuit occurs. The super capacitor and the battery are backup power sources of the device, and the power module realizes charge and discharge management on the super capacitor and controls the discharge management of the battery.
The power-taking CT4 and the power module form a small-current starting power-taking circuit, the power-taking CT4 outputs a rectified bridge output consisting of D1, D2, D3 and D4, the rectified bridge output is filtered by an electrolytic capacitor E3, clamping current consisting of a resistor DR2, a voltage stabilizing diode Z8, a resistor DR3 and a voltage stabilizing diode Z1 is stabilized to DC5V, the filtered voltage is filtered by the electrolytic capacitor E1 to output a direct-current signal DC5V, and the direct-current signal is converted into a DC3.3V working power supply by a first DC/DC chip U2.
The power supply module is connected with a backup power supply charging and discharging circuit, and the backup power supply charging and discharging circuit is a super capacitor charging and discharging management circuit; the super capacitor charging and discharging management circuit comprises a super capacitor, a second DC/DC conversion chip, a third DC/DC conversion chip charging and discharging controller, a super capacitor charging management circuit and a super capacitor discharging management circuit, the super capacitor is a priority backup power supply of the intelligent fuse, and the battery becomes the backup power supply when the super capacitor is not powered. VCC (DC5V) after being stabilized by the CT electricity-taking power supply module is an input power supply of the charging and discharging management current of the super capacitor, the VCC is converted into VSCF (DC2.7V) by a second DC/DC conversion chip U16 to CHARGE the super capacitor SCF1, CHARGE _ S is charging control, and when the input current meets the requirement of full-speed operation of the measurement and control device 9, the charging of the super capacitor is controlled; VSCF (DC2.7V) is converted into DC3.3V singlechip working power supply through a third DC/DC conversion chip U8, CAP _ CTRL is super capacitor discharge control, and when line voltage loss or input current cannot meet the power-taking requirement of the measurement and control device 9, the super capacitor is controlled to discharge. Therefore, charging and discharging management of the backup power supply of the super capacitor is achieved.
The backup battery management circuit comprises a backup battery and a fourth DC/DC conversion chip, in order to prolong the service life of the battery, the backup battery adopts a non-rechargeable lithium iron phosphate battery, the output of the battery is converted into DC3.3V through the fourth DC/DC chip U9, and when the power supply requirement of the measurement and control device cannot be met due to line voltage loss or input current, and a super capacitor is in voltage loss, the backup battery provides a working power supply for the measurement and control device.
The measuring and controlling device further comprises a drop-out fuse position signal detection circuit, the core of the drop-out fuse position signal detection circuit is a three-axis acceleration sensor U14, a controller reads angle data of the three-axis acceleration sensor U14 through an SPI interface, whether a fuse tube is in a normal working state or a drop-out state is judged according to calculation, in order to reduce power consumption of the device, a working power supply of the U14 is controlled by ACC _ Ctrl through V7 and R15, when data of the three-axis acceleration sensor U14 are read, working voltage is turned on, and the working power supply is turned off at other times.
The measurement and control device adopts the singlechip with ultra-low power consumption, can enter a sleep mode by combining different working conditions during working, and adopts the analog-digital circuit with low power consumption on hardware to realize the aim of low power consumption; the single chip microcomputer can collect current, collect fuse tube position signals, perform interphase short circuit protection alarm, single-phase grounding alarm, RF short-distance wireless communication and other main functions, and realizes the automatic two-remote modification of the intelligent drop-out fuse on the premise of not changing the overall dimension, the installation mode and the operation and maintenance mode of the high-voltage drop-out fuse. As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (7)
1. A kind of one and two times depth fuses the intellectual drop-out fuse, characterized by, including drop-out fuse, get electric CT, measure CT and observe and control the apparatus, 10kV circuit insert drop-out fuse through the incoming line terminal, and connect and get electric CT and measure CT sequentially, connect the outgoing line terminal through the fusion tube;
the output ends of the electricity taking CT and the measuring CT are respectively connected to the measurement and control device;
the measurement and control device comprises a power module and a controller;
the power-taking CT is connected into the power module, the output of the power-taking CT is converted into a controller working power supply through the power module, the measured CT is output to the controller, the line current is obtained through A/D sampling and calculation, and the controller judges whether interphase short circuit occurs or not.
2. The primary and secondary deep fusion intelligent drop-out fuse of claim 1, wherein the power-taking CT and the power module form a low-current start power-taking circuit, the output of the power-taking CT is output through a rectifier bridge, filtered by a first electrolytic capacitor and regulated to DC5V by clamping current, and then the second power-taking CT outputs a DC signal DC5V filtered by the electrolytic capacitor and is converted into a DC3.3V working power supply through a first DC/DC chip to supply power to the controller.
3. The primary and secondary deep fusion intelligent drop-out fuse according to claim 2, wherein the power module is connected with a backup power charging and discharging circuit, and the backup power charging and discharging circuit is a super capacitor charging and discharging management circuit;
the super capacitor charge-discharge management circuit comprises a super capacitor, a second DC/DC conversion chip, a third DC/DC conversion chip charge-discharge controller, a super capacitor charge management circuit and a super capacitor discharge management circuit, when the input current meets the requirement of full-speed operation of the measurement and control device, the charge-discharge controller controls the charge of the super capacitor, VCC stabilized by the power supply module is the input power supply of the super capacitor charge-discharge management current, and VSCF converted by the second DC/DC chip into DC2.7V charges the super capacitor;
when the line is in voltage loss or the input current cannot meet the power-taking requirement of the measurement and control device, the charge and discharge controller controls the super capacitor to discharge the VSCF, and the VSCF is converted into DC3.3V single-chip microcomputer working power supply through the third DC/DC chip.
4. The primary-secondary deep fusion intelligent drop-out fuse as claimed in claim 3, wherein the backup power supply charging and discharging circuit further comprises a backup battery management circuit, the backup battery management circuit comprises a backup battery and a fourth DC/DC conversion chip, when the line voltage is lost or the input current cannot meet the power supply requirement of the measurement and control device, and the super capacitor is in voltage loss, the backup battery provides a working power supply for the measurement and control device, and the output of the backup battery is converted into DC3.3V working power supply through the fourth DC/DC chip to supply power to the controller.
5. The primary-secondary depth fusion intelligent drop-out fuse protector according to claim 1, wherein the measurement and control device further comprises a drop-out fuse position signal detection circuit which comprises a three-axis acceleration sensor, the controller reads angle data of the three-axis acceleration sensor, and the controller judges whether a fusion tube of the drop-out fuse is in a normal working state or a drop-out state according to calculation; the working power supply of the triaxial acceleration sensor is provided by the power supply module, the controller controls the on-off of the working power supply of the triaxial acceleration sensor, the working power supply of the triaxial acceleration sensor is turned on when the data of the triaxial acceleration sensor is read, and the working power supply of the triaxial acceleration sensor is turned off at other times.
6. The primary-secondary deep fusion intelligent drop-out fuse as claimed in claim 1, wherein the controller is a single chip microcomputer STM32L433VCT 6.
7. The primary-secondary depth fusion intelligent drop-out fuse as claimed in claim 1, wherein the drop-out fuse comprises an incoming line terminal, a fusion tube pull ring, a fusion tube, a fuse wire, an outgoing line terminal, a mounting bracket and an insulator, wherein the incoming line terminal, the fusion tube pull ring, the electricity-taking CT, the measurement CT, the fusion tube, the fuse wire, the outgoing line terminal, the mounting bracket, the insulator and the measurement and control device are integrally designed and are mounted on a telegraph pole through the mounting bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121705697.4U CN215772636U (en) | 2021-07-26 | 2021-07-26 | Intelligent drop-out fuse with primary and secondary deep fusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121705697.4U CN215772636U (en) | 2021-07-26 | 2021-07-26 | Intelligent drop-out fuse with primary and secondary deep fusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215772636U true CN215772636U (en) | 2022-02-08 |
Family
ID=80107317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121705697.4U Active CN215772636U (en) | 2021-07-26 | 2021-07-26 | Intelligent drop-out fuse with primary and secondary deep fusion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215772636U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117424185A (en) * | 2023-10-26 | 2024-01-19 | 深圳市汇采技术有限公司 | Intelligent fuse |
-
2021
- 2021-07-26 CN CN202121705697.4U patent/CN215772636U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117424185A (en) * | 2023-10-26 | 2024-01-19 | 深圳市汇采技术有限公司 | Intelligent fuse |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105092977B (en) | Accumulator internal resistance measurement method and circuit, method for detecting health status and system | |
| CN202103478U (en) | Comprehensive intelligent distribution box | |
| CN101873010A (en) | Intelligent monitoring terminal of electric distribution system | |
| CN101667747A (en) | Conversion module for extracting working power from high-voltage power | |
| CN103453998A (en) | Self-energy-taking wireless temperature sensor and achieving method thereof | |
| CN215772636U (en) | Intelligent drop-out fuse with primary and secondary deep fusion | |
| CN104319895A (en) | Intelligent distributing line monitoring terminal | |
| AU2020202736A1 (en) | Battery Test System | |
| CN106707368B (en) | Novel power supply mode's transmission line environment meteorological monitoring device | |
| CN211180059U (en) | Explosion-proof intelligent fault indicator | |
| CN210444055U (en) | Battery pack monitoring device and electric vehicle | |
| CN209709744U (en) | A kind of communication base station power supply system that retired power battery echelon utilizes | |
| CN104167780B (en) | A kind of continuous controlled isolating active active equalization charging module and charge system thereof | |
| CN110763348A (en) | Cable joint temperature monitoring device and system | |
| CN111002861A (en) | Voltage conversion method, device and equipment | |
| CN203984087U (en) | The uninterrupted regulated power supply system of movable type based on PLC | |
| CN106323358A (en) | High-voltage transmission line wireless current temperature monitoring device | |
| CN210833886U (en) | Cable joint temperature monitoring device and system | |
| CN211790935U (en) | Power supply circuit of circuit breaker, equipment and thing networking system | |
| CN209784476U (en) | Zero sequence fault indicator | |
| CN210927110U (en) | Intelligent measurement and control device based on new energy power station | |
| CN114156551A (en) | Battery system and control method of battery system | |
| CN208636369U (en) | A kind of voltage real-time acquisition device for CVT secondary side | |
| CN104880598A (en) | Induced current monitor for cable sheath | |
| CN220692847U (en) | Power supply and battery management system of high-power short-time pulse load |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |