CN114937583A - Drop-out fuse capable of being monitored on line based on induction power taking - Google Patents
Drop-out fuse capable of being monitored on line based on induction power taking Download PDFInfo
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- CN114937583A CN114937583A CN202210572133.0A CN202210572133A CN114937583A CN 114937583 A CN114937583 A CN 114937583A CN 202210572133 A CN202210572133 A CN 202210572133A CN 114937583 A CN114937583 A CN 114937583A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/46—Circuit arrangements not adapted to a particular application of the protective device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The invention discloses a drop-out fuse capable of being monitored on line based on induction power taking, which comprises an insulator, wherein a positive wiring piece and a negative wiring piece for connecting a wire are fixedly arranged at two ends of the insulator respectively, and a mounting bar is arranged at one side of the insulator; the parcel in the positive wiring piece outside has the casing, and negative wiring piece outside parcel has lower casing, and the fuse tube is located between positive wiring piece and the negative wiring piece, is equipped with the fuse-element in the fuse tube, and on the negative wiring piece was located to the monitoring module cover, monitoring module included the shell and located current transformer, power module and the monitoring module in the shell, and the casing is equipped with the through-hole that can supply the negative wiring piece to run through. Compared with the prior art, the invention has the following advantages: be equipped with monitoring device in this drop out fuse, monitoring device passes through current transformer and responds to on the fuse and get the electricity, need not external power supply and has improved the stability of product. Meanwhile, the monitoring module is complete in function, and background supervision personnel can find abnormality and judge the type of the abnormality in time, so that the working efficiency of the monitoring personnel is improved.
Description
Technical Field
The invention relates to the technical field of fuses, in particular to a drop-out fuse capable of being monitored on line based on induction power taking.
Background
The drop-out fuse is generally installed on the distribution line branch line, and when the drop-out fuse is dropped and disconnected, an obvious disconnection point has the function of an isolating switch, so that a safe operation environment is created for the line and equipment at the maintenance section, and the safety during fault maintenance is improved. After the drop-out fuse runs for a long time, the drop-out fuse is seriously aged and has numerous problems, and the existing drop-out fuse has no reliable detection means for remotely detecting the opening and closing conditions of the fuse. Because no intelligent equipment or system is used for monitoring the transformer area in real time, information cannot be automatically transmitted to operation and maintenance personnel after the transformer area is in fault, the transformer area can be fixed only by dialing a repair call by a user and patrolling the circuit by a worker, and manpower loss and time loss are huge.
Chinese patent publication No. CN113433487A discloses a method, an apparatus, a device and a medium for monitoring the state of a drop-out fuse, and the monitoring method mainly comprises the following steps: install state acquisition unit additional on drop out fuse and monitor fuse fusion tube inclination and temperature, rethread short distance wireless communication with data message transmission to collecting the unit, collect the unit and utilize edge calculation module to carry out the analysis to data, when the analysis result is fuse fusing or fuse fall, then produce alarm information, the wireless communication module who collects the unit sends alarm information to distribution main website and mobile terminal respectively through the 4G network to fortune dimension personnel in time master failure, and reach the fault point rapidly and overhaul it.
The control processing module in the drop-out fuse in the technical scheme supplies power through the lithium battery and the solar energy, the solar energy power supply is lack of stability, and meanwhile, the installation of the product is more troublesome. On the other hand, the drop-out fuse cannot sense the switch position and current measurement, and the functional module is to be perfected. Therefore, there is a need for a drop-out fuse based on induction power supply, which is independent of an external power supply and has functions of position sensing, current measurement and temperature monitoring, so as to solve the above problems.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides an on-line monitoring drop-out fuse based on induction power taking.
In order to achieve the purpose, the invention adopts the following scheme:
a drop-out fuse based on induction electricity taking and online monitoring comprises:
the insulator is characterized in that a positive wiring piece and a negative wiring piece for connecting a wire are fixedly arranged at two ends of the insulator respectively, and a mounting bar is arranged at one side of the insulator;
the outer side of the positive wiring piece is wrapped by an upper shell, and the positive wiring piece is clamped with one end of the fuse tube;
the outer side of the negative wiring piece is wrapped by a lower shell, and the negative wiring piece is hinged with one end of the fuse tube;
the fuse tube is arranged between the positive wiring piece and the negative wiring piece, a melt is arranged in the fuse tube, and one side of the fuse tube is provided with a pull ring;
the monitoring device is sleeved on the negative wiring piece and comprises a shell, a current transformer, a power supply module and a monitoring module, wherein the current transformer, the power supply module and the monitoring module are arranged in the shell; the current transformer is alternately connected with the power supply module and the monitoring module through the normally open relay unit, the monitoring module induces electricity on the negative wiring piece through the current transformer, and the power supply module comprises an electric energy collecting circuit unit, an energy storage unit, a voltage comparison unit and a voltage stabilizing circuit unit for supplying power to the monitoring module; the monitoring module comprises a central processing unit, a normally open relay unit, a signal conditioning circuit unit and a positioning communication unit. When the voltage comparison unit detects that the voltage of the energy storage capacitor is larger than the upper threshold value, the power supply module supplies power to the monitoring module through the voltage stabilizing circuit unit, and when the voltage comparison unit detects that the voltage of the energy storage capacitor is smaller than the lower threshold value, the power supply module prohibits the voltage stabilizing circuit unit from outputting collection and storage of waiting electric energy.
The electric energy collection circuit unit realizes collection and management of electric power of microwatts (muW) to milliwatts (mW) level through the BQ25570 chip, adopts the super capacitor to realize electric energy storage, and realizes real-time monitoring and abnormity early warning of conducting bar perception, current measurement and fuse temperature through the ARM chip. The device can work with the isolator current as low as 1A and can continue to work for a certain length of time after the outage. Therefore, the induction electricity-taking-based online monitoring device meets the requirements of a transparent power grid and a ubiquitous power internet of things, can better collect and manage power without depending on the work of an external power supply, and improves the stability of products.
Further, burden wiring spare afterbody is equipped with the spacing concave part that is used for installing the pivot, the casing corresponds spacing concave part department down and is equipped with the opening that can supply the pivot to connect burden wiring spare, be equipped with shifting block and rotating member in the pivot, the shifting block passes through bolt and pivot fixed connection, fuse tube lower extreme is equipped with the lower conductive cap that is used for articulated rotating member, the fuse tube is articulated with the rotating member through lower conductive cap, the cladding of the lower conductive cap outside has down the fuse tube housing, be equipped with the lug of conflict rotating member on the fuse tube housing down. The rotating piece can make the fuse tube rotate downwards rapidly under the action of gravity after the solution is broken, so that the circuit is disconnected, and a fault section line or fault equipment is cut off.
Furthermore, an upper fixed contact is arranged on the positive wiring piece, a connecting piece is arranged below the upper fixed contact, a connecting groove into which a fuse tube can be clamped is formed in the connecting piece, a contact spring is arranged between the upper fixed contact and the connecting piece, an upper conductive cap used for being connected with the connecting piece is arranged at the upper end of the fuse tube, an upper fuse tube sleeve is wrapped outside the upper conductive cap, and a limiting strip corresponding to the shape of the connecting piece is arranged on one side of the upper fuse tube sleeve.
The upper and lower moving contacts at two ends of the fuse tube are tied by means of melt, and after the upper moving contact is pushed into the protruding part of the connecting piece, the upper static contact is propped against the upper moving contact, so that the fuse tube is firmly clamped in the connecting groove in the connecting piece. When the short-circuit current is fused through the fuse wire, an electric arc is generated, a steel paper tube lined in the fuse tube generates a large amount of gas under the action of the electric arc, the gas is sealed due to the upper end of the fuse tube, and the gas is sprayed out to the lower end to blow out the electric arc. As the fuse wire is fused, the upper and lower moving contacts of the fuse tube lose the fastening force of the fuse wire, and the fuse tube falls rapidly under the action of the self gravity of the fuse tube and the contact spring, so that a circuit is disconnected, and a fault section line or fault equipment is cut off.
Furthermore, the monitoring module still includes temperature monitoring circuit unit, and temperature monitoring circuit unit is connected with central processing unit, and central processing unit accessible temperature monitoring circuit unit receives the temperature sensor information of locating on the isolator, and temperature sensor is high sensitivity platinum resistance PT 1000.
Furthermore, the monitoring module further comprises a switch monitoring circuit unit, the switch monitoring circuit unit is connected with the central processing unit, and the central processing unit can receive micro-touch switch information arranged on the isolating switch through the switch monitoring circuit unit.
Further, the energy storage unit comprises an energy storage capacitor, the energy storage capacitor comprises at least two 10F3V capacitors connected in series, the voltage of the energy storage capacitor is not lower than 5V, the voltage stabilizing output device of the voltage stabilizing circuit unit is RT8059, and the input voltage range of the voltage stabilizing output device is 2.8V-5.5V. The rectifying circuit unit adopts 4 germanium diodes with low forward voltage drop to form a full-bridge rectifying circuit; the electric energy collection circuit unit takes the BQ25570 as a core and can realize electric energy collection under the condition that the input voltage is as low as 0.1V; the energy storage circuit unit selects two 10 Farad 3V low internal resistance super capacitors to be connected in series; the voltage comparison unit selects LM393, sets an output starting voltage threshold value to be 4.9V, and sets a cut-off output voltage threshold value to be 3.0V; the voltage-stabilizing output unit selects RT8059, the input voltage range is 2.8V-5.5V, the voltage is matched with the voltage of the energy storage unit, and the output voltage is 3.3V.
Furthermore, the power module also comprises a rectifying circuit unit for converting the alternating current signal into the direct current signal, the power module is connected with the current transformer through the rectifying circuit unit, and the rectifying circuit unit is a full-bridge rectifying circuit consisting of 4 diodes.
Furthermore, the normally open relay unit is a double-path solid-state relay G3VM-352C, the normally open relay unit switches the output signals of the current transformer by taking 10s as a period, and the normally open relay unit is closed by 0.2s per period to switch the output signals of the current transformer to the monitoring module. The effect of normally opening the relay unit is periodic switching mutual-inductor output signal, if use 10s as the cycle, every period closure normally opening relay 0.2s, with current transformer's output signal switching to measuring loop, all the other 9.8s normally opening relay unit are opened, and current transformer's output signal gives power module power supply. Therefore, the mutual inductor for power supply and the mutual inductor for measurement are shared, and the equipment cost, the size and the weight are reduced.
Further, the transformation ratio value of the current transformer is not less than 600.
Furthermore, the positioning communication unit comprises a Beidou positioning unit. When the backstage personnel detect the displacement of the fuse through the Beidou positioning unit, the positioning communication unit sends an abnormal signal and position information to the management center. Can help supervisors to find abnormality in time so as to take measures quickly, avoid accidents or disasters and reduce the loss of personnel and property.
Compared with the prior art, the invention has the following advantages: be equipped with monitoring device in this drop out fuse, monitoring device passes through current transformer and responds to on the fuse and get the electricity, need not external power supply and has improved the stability of product, lets the installation of product become more simple. Meanwhile, the monitoring module comprises a temperature monitoring circuit unit, a signal conditioning circuit unit, a positioning communication unit and a switch monitoring circuit unit, background supervision personnel with complete functions can find abnormality and judge the abnormal type in time, and the working efficiency of the supervision personnel is improved.
Drawings
The present application will be described in further detail with reference to the drawings and the following detailed description.
Fig. 1 is a schematic diagram of an overall structure of a drop-out fuse based on induction power taking and capable of being monitored on line.
Fig. 2 is a schematic diagram of an internal structure of a drop-out fuse capable of being monitored on line based on induction power supply of the present invention.
Fig. 3 is a schematic cross-sectional structure diagram of a drop-out fuse capable of being monitored on line based on induction power taking according to the present invention.
Fig. 4 is a structural diagram of a monitoring device in a drop-out fuse capable of on-line monitoring based on induction power taking according to the present invention.
Fig. 5 is a schematic block diagram of a structure of a monitoring device in a drop-out fuse capable of online monitoring based on induction power taking.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1 to 5, an induction power-taking-based drop-out fuse capable of being monitored on line includes:
an insulator 14, as shown in fig. 1 and 3, a positive wiring piece 17 and a negative wiring piece 2 for connecting wires are respectively fixed at two ends of the insulator 14, and a mounting bar 18 is arranged at one side of the insulator 14;
the positive wiring piece 17 is wrapped by an upper shell 19 as shown in fig. 1 and 3, and the positive wiring piece 17 is clamped with one end of a fuse tube 20;
the negative wiring piece 2 is as shown in fig. 1 and 2, the outer side of the negative wiring piece 2 is wrapped by a lower shell 22, and the negative wiring piece 2 is hinged with one end of a fuse tube 20;
a fuse tube 20, as shown in fig. 1 and 2, the fuse tube 20 is arranged between the positive wiring member 17 and the negative wiring member 2, a melt is arranged in the fuse tube 20, and a pull ring 21 is arranged on one side of the fuse tube 20;
the monitoring device 23, as shown in fig. 1-5, is sleeved on the negative wiring member 2, the monitoring device 23 includes a housing 24, and the current transformer 1, the power module 15 and the monitoring module 16 which are arranged in the housing 24, the housing 24 is provided with a through hole 25 for the negative wiring member 2 to pass through; the current transformer 1 is alternately connected with the power supply module 15 and the monitoring module 16 through the normally open relay unit 8, the monitoring module 16 inducts electricity on the negative wiring piece 2 through the current transformer 1, and the power supply module 15 comprises an electric energy collecting circuit unit 4, an energy storage unit 6, a voltage comparison unit 5 and a voltage stabilizing circuit unit 7 for supplying power to the monitoring module 16; the monitoring module 16 comprises a central processing unit 10, a normally open relay unit 8, a signal conditioning circuit unit 9 and a positioning communication unit 13. When the voltage comparison unit 5 detects that the voltage of the energy storage capacitor is greater than the upper threshold, the power supply module 15 supplies power to the monitoring module 16 through the voltage stabilizing circuit unit 7, and when the voltage comparison unit 5 detects that the voltage of the energy storage capacitor is less than the lower threshold, the power supply module 15 prohibits the voltage stabilizing circuit unit 7 from outputting the collection and storage of the waiting power.
The electric energy collection circuit unit 4 realizes collection and management of electric power of microwatts (μ W) to milliwatts (mW) level through a BQ25570 chip, realizes electric energy storage by adopting a super capacitor, and realizes real-time monitoring and abnormity early warning of bus bar sensing, current measurement and fuse temperature through an ARM chip. The device can work with the isolator current as low as 1A and can continue to work for a certain length of time after the outage. Therefore, the induction electricity-taking-based online monitoring device meets the requirements of a transparent power grid and a ubiquitous power internet of things, can better collect and manage power without depending on the work of an external power supply, and improves the stability of products.
Preferably, as shown in fig. 1 to 3, a limiting concave portion 26 for mounting the rotating shaft 27 is provided at the tail of the negative connection member 2, an opening for the rotating shaft 27 to connect with the negative connection member 2 is provided at a position of the lower housing 22 corresponding to the limiting concave portion 26, a shifting block 28 and a rotating member 29 are provided on the rotating shaft 27, the shifting block 28 is fixedly connected with the rotating shaft 27 through a plug, a lower conductive cap 31 for hinging the rotating member 29 is provided at the lower end of the fuse tube 20, the fuse tube 20 is hinged with the rotating member 29 through the lower conductive cap 31, a lower fuse tube sleeve 30 is wrapped outside the lower conductive cap 31, and a protrusion abutting against the rotating member 29 is provided on the lower fuse tube sleeve 30. The rotating member 29 can make the fuse tube 20 rotate downwards rapidly under the action of gravity after the solution is broken, so that the circuit is disconnected, and the fault section line or fault equipment is cut off.
Preferably, as shown in fig. 1 to 3, the positive wiring member 17 is provided with an upper fixed contact 31, a connector 32 is provided below the upper fixed contact 31, the connector 32 is provided with a connection groove 33 into which the fuse tube 20 can be clamped, a contact spring 34 is provided between the upper fixed contact 31 and the connector 32, the upper end of the fuse tube 20 is provided with an upper conductive cap for connecting the connector 32, the outer side of the upper conductive cap is coated with an upper fuse tube sleeve 35, and one side of the upper fuse tube sleeve 35 is provided with a limit strip corresponding to the shape of the connector.
The upper and lower moving contacts at the two ends of the fuse tube 20 are tied by means of melt, and after the upper moving contact is pushed into the protruding part of the connecting piece, the upper fixed contact is propped against the upper moving contact, so that the fuse tube 20 is firmly clamped in the connecting groove in the connecting piece. When the short-circuit current is fused through the fuse wire, an electric arc is generated, a large amount of gas is generated by the steel paper tube lined in the fuse tube 20 under the action of the electric arc, the upper end of the fuse tube 20 is sealed, and the gas is sprayed out towards the lower end to blow out the electric arc. As the fuse wire is fused, the upper and lower moving contacts of the fuse tube 20 lose the fastening force of the fuse wire, and the fuse tube 20 falls rapidly under the action of the self gravity of the fuse tube 20 and the contact spring, so that the circuit is disconnected, and a fault section line or fault equipment is cut off.
Preferably, as shown in fig. 5, the monitoring module 16 further includes a temperature monitoring circuit unit 12, the temperature monitoring circuit unit 12 is connected to the central processing unit 10, the central processing unit 10 can receive information of a temperature sensor disposed on the isolating switch through the temperature monitoring circuit unit 12, and the temperature sensor is a high-sensitivity platinum thermistor PT 1000.
Preferably, as shown in fig. 5, the monitoring module 16 further includes a switch monitoring circuit unit 11, the switch monitoring circuit unit 11 is connected to the central processing unit 10, and the central processing unit 10 can receive information of the micro-touch switch disposed on the isolating switch through the switch monitoring circuit unit 11.
Preferably, as shown in fig. 5, the energy storage unit 6 includes an energy storage capacitor, the energy storage capacitor includes at least two 10F3V capacitors connected in series, the voltage of the energy storage capacitor is not lower than 5V, the voltage stabilizing output device of the voltage stabilizing circuit unit 7 is RT8059, and the input voltage range of the voltage stabilizing output device is 2.8V-5.5V. The rectifying circuit unit 3 adopts 4 germanium diodes with low forward voltage drop to form a full-bridge rectifying circuit; the electric energy collection circuit unit 4 can realize electric energy collection under the condition that the input voltage is as low as 0.1V by taking BQ25570 as a core; the energy storage circuit unit selects two 10 Farad 3V low internal resistance super capacitors to be connected in series; the voltage comparison unit 5 selects the LM393, sets the threshold of the output starting voltage to be 4.9V, and sets the threshold of the turn-off output voltage to be 3.0V; the voltage-stabilizing output unit selects RT8059, the input voltage range is 2.8V-5.5V, the voltage is matched with the voltage of the energy storage unit 6, and the output voltage is 3.3V.
Preferably, as shown in fig. 5, the power module 15 further includes a rectifier circuit unit 3 for converting an ac signal into a dc signal, the power module 15 is connected to the current transformer 1 through the rectifier circuit unit 3, and the rectifier circuit unit 3 is a full-bridge rectifier circuit composed of 4 diodes.
Preferably, as shown in fig. 5, the normally open relay unit 8 is a two-way solid-state relay G3VM-352C, the normally open relay unit 8 switches the output signal of the current transformer 1 in a cycle of 10s, and the normally open relay unit 8 is closed for 0.2s per cycle to switch the output signal of the current transformer 1 to the monitoring module 16. Normally open relay unit 8's effect is periodic switching mutual-inductor 1 output signal, if use 10s as the cycle, every period closure normally open relay 0.2s, switches current transformer 1's output signal to measuring circuit, and remaining 9.8s normally open relay unit 8 is opened, and current transformer 1's output signal gives power module 15 power supply. Therefore, the power supply mutual inductor 1 and the measuring mutual inductor 1 are shared, and the equipment cost, the volume and the weight are reduced.
Preferably, the transformation ratio of the current transformer 1 is not less than 600.
Preferably, the positioning communication unit 13 includes a beidou positioning unit. When the backstage personnel detect the displacement of the fuse through the Beidou positioning unit, the positioning communication unit 13 sends an abnormal signal and position information to the management center. Can help the supervision personnel to find the abnormity in time so as to take measures quickly, avoid the occurrence of accidents or disasters and reduce the loss of personnel and property.
Compared with the prior art, the invention has the following advantages: be equipped with monitoring device 23 in this drop out fuse, monitoring device 23 obtains the electricity through current transformer 1 induction on the fuse, need not external power supply and has improved the stability of product, also lets the installation of product become simpler simultaneously. Meanwhile, the monitoring module 16 comprises a temperature monitoring circuit unit 12, a signal conditioning circuit unit 9, a positioning communication unit 13 and a switch monitoring circuit unit 11, background supervision personnel with complete functions can find abnormality and judge the type of the abnormality in time, and the working efficiency of the supervision personnel is improved.
The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present application, and these modifications and substitutions should also be regarded as the protection scope of the present application.
Claims (10)
1. The utility model provides a but drop out fuse based on induction electricity-taking on-line monitoring which characterized in that includes:
the cable connector comprises an insulator, wherein a positive wiring piece and a negative wiring piece for connecting a wire are fixedly arranged at two ends of the insulator respectively, and a mounting bar is arranged at one side of the insulator;
the outer side of the positive wiring piece is wrapped by an upper shell, and the positive wiring piece is clamped with one end of the fuse tube;
the outer side of the negative wire connecting piece is wrapped by a lower shell, and the negative wire connecting piece is hinged with one end of the fuse tube;
the fuse tube is arranged between the positive wiring piece and the negative wiring piece, a melt is arranged in the fuse tube, and a pull ring is arranged on one side of the fuse tube;
the monitoring device is sleeved on the negative wiring piece and comprises a shell, a current transformer, a power supply module and a monitoring module, wherein the current transformer, the power supply module and the monitoring module are arranged in the shell; the current transformer is alternately connected with the power supply module and the monitoring module through a normally open relay unit, the monitoring module senses electricity on the negative wiring piece through the current transformer, and the power supply module comprises an electric energy collecting circuit unit, an energy storage unit, a voltage comparison unit and a voltage stabilizing circuit unit for supplying power to the monitoring module; the monitoring module comprises a central processing unit, a normally open relay unit, a signal conditioning circuit unit and a positioning communication unit.
2. The drop-out fuse based on induction electricity taking and online monitoring as claimed in claim 1, wherein a limiting concave portion for installing a rotating shaft is arranged at the tail of the negative connection element, an opening for the rotating shaft to be connected with the negative connection element is formed in the position, corresponding to the limiting concave portion, of the lower shell, a shifting block and a rotating element are arranged on the rotating shaft, the shifting block is fixedly connected with the rotating shaft through a bolt, a lower conductive cap for hinging the rotating element is arranged at the lower end of the fuse tube, the fuse tube is hinged with the rotating element through the lower conductive cap, a lower fuse tube sleeve is wrapped on the outer side of the lower conductive cap, and a convex block which abuts against the rotating element is arranged on the lower fuse tube sleeve.
3. The drop-out fuse based on induction power taking and capable of being monitored on line as claimed in claim 2, wherein an upper fixed contact is arranged on the positive wiring member, a connecting member is arranged below the upper fixed contact, a connecting groove for clamping the fuse tube is formed in the connecting member, a contact spring is arranged between the upper fixed contact and the connecting member, an upper conductive cap for connecting the connecting member is arranged at the upper end of the fuse tube, an upper fuse tube sleeve is wrapped outside the upper conductive cap, and a limiting strip corresponding to the shape of the connecting member is arranged on one side of the upper fuse tube sleeve.
4. The drop-out fuse capable of being monitored on line based on induction power taking of claim 2 or 3, wherein the monitoring module further comprises a temperature monitoring circuit unit, the temperature monitoring circuit unit is connected with the central processing unit, the central processing unit can receive information of a temperature sensor arranged on the isolating switch through the temperature monitoring circuit unit, and the temperature sensor is a high-sensitivity platinum thermistor PT 1000.
5. The drop-out fuse based on induction electricity taking and online monitoring is characterized in that the monitoring module further comprises a switch monitoring circuit unit, the switch monitoring circuit unit is connected with the central processing unit, and the central processing unit can receive micro-contact switch information arranged on the isolating switch through the switch monitoring circuit unit.
6. The drop-out fuse capable of being monitored on line based on induction power taking according to claim 2 or 3, wherein the energy storage unit comprises an energy storage capacitor, the energy storage capacitor comprises at least two 10F3V capacitors connected in series, the voltage of the energy storage capacitor is not lower than 5V, a voltage stabilizing output device of the voltage stabilizing circuit unit is RT8059, and the input voltage range of the voltage stabilizing output device is 2.8V-5.5V.
7. The drop-out fuse capable of being monitored on line based on induction power supply according to claim 6, wherein the power module further comprises a rectifying circuit unit for converting an alternating current signal into a direct current signal, the power module is connected with the current transformer through the rectifying circuit unit, and the rectifying circuit unit is a full-bridge rectifying circuit consisting of 4 diodes.
8. The drop-out fuse based on induction power taking and online monitoring as claimed in claim 7, wherein the normally open relay unit is a two-way solid state relay G3VM-352C, the normally open relay unit switches the output signal of the current transformer with a cycle of 10s, and the normally open relay unit switches the output signal of the current transformer to the monitoring module by closing 0.2s per cycle.
9. The drop-out fuse capable of being monitored on line based on induction power taking as claimed in claim 1, wherein a transformation ratio of the current transformer is not less than 600.
10. The drop-out fuse capable of being monitored on line based on induction power taking according to claim 1, wherein the positioning communication unit comprises a Beidou positioning unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210572133.0A CN114937583A (en) | 2022-05-25 | 2022-05-25 | Drop-out fuse capable of being monitored on line based on induction power taking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210572133.0A CN114937583A (en) | 2022-05-25 | 2022-05-25 | Drop-out fuse capable of being monitored on line based on induction power taking |
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| Publication Number | Publication Date |
|---|---|
| CN114937583A true CN114937583A (en) | 2022-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210572133.0A Pending CN114937583A (en) | 2022-05-25 | 2022-05-25 | Drop-out fuse capable of being monitored on line based on induction power taking |
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| CN (1) | CN114937583A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117907815A (en) * | 2023-12-27 | 2024-04-19 | 浙江慈虹电力科技有限公司 | Drop-out fuse on-line monitoring device |
-
2022
- 2022-05-25 CN CN202210572133.0A patent/CN114937583A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117907815A (en) * | 2023-12-27 | 2024-04-19 | 浙江慈虹电力科技有限公司 | Drop-out fuse on-line monitoring device |
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