CN217360252U - Feeder leakage current online monitoring device of open type direct current power supply system - Google Patents
Feeder leakage current online monitoring device of open type direct current power supply system Download PDFInfo
- Publication number
- CN217360252U CN217360252U CN202123084756.3U CN202123084756U CN217360252U CN 217360252 U CN217360252 U CN 217360252U CN 202123084756 U CN202123084756 U CN 202123084756U CN 217360252 U CN217360252 U CN 217360252U
- Authority
- CN
- China
- Prior art keywords
- power supply
- channel structure
- supply system
- leakage current
- monitoring device
- 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
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses an open-type direct current power supply system feeder leakage current on-line monitoring device, include: a feed detection module having a housing; the channel structure is arranged on a path where the primary wire passes through the shell and used for allowing the primary wire to pass through. Because the design has a channel structure during module installation, directly contain the primary line in the arched passageway, just so can conveniently dismantle and maintain, the line footpath of the primary line that connects has fully been considered to the height and the width of arched passageway to and the module installation after stretch out the high scheduling problem of panel.
Description
Technical Field
The utility model relates to a transformer substation technical field, in particular to open-type DC power supply system feeder leakage current on-line monitoring device.
Background
No matter the direct current power supply system for the transformer substation or the direct current power supply system in other application fields, the direct current feeder screen has the function of performing direct current voltage distribution on a direct current bus. Some sensing devices and monitoring equipment can be added to a conventional direct-current feeder screen to monitor the earth leakage current of each feeder branch so as to prevent the imbalance of bus voltage caused by the insulation reduction of a certain branch and influence the normal use of other direct-current equipment. Except for some commercial applications, substantially all dc power systems require leakage current monitoring of each branch. The existing feeder line modularization detection scheme still has some defects, a primary power line is integrated in the module, 4 breakpoints appear, and fault points are increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides an open-type direct current electrical power generating system feeder leaks current on-line monitoring device, can effectively solve the problem in the background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an open-type direct current power supply system feeder leak current on-line monitoring device which characterized in that includes:
a circuit breaker connected to a power source, the circuit breaker having an interface to a load;
the feeding detection module is connected with the circuit breaker and is provided with a channel structure, and the channel structure is used for providing space for a primary line of the circuit breaker to penetrate through the feeding detection module and be connected with a load;
the bottom plate, the bottom plate has the leakage current sensor, the bottom plate with the feed detects the module connection.
Further, the feed detection module includes:
the main board is provided with a CPU, and the CPU is connected with a switch state judging circuit, a main board indicator light, a key, a branch indicator light, a high-voltage power supply circuit, an EERPOM storage module, a power supply circuit and a display screen;
the detection board is provided with a leakage current sensor exciting circuit, a leakage current sampling circuit and a power supply circuit;
the side plate is provided with a signal path, a data exchange center communication circuit and a power circuit.
Further, the base plate includes:
the golden finger socket is used for connecting the feeder line detection module and a transmission line for providing power and signals;
the sensor component consists of a sensor magnetic core, a coil and an electronic device, is an induction component of the sensor and is connected with a leakage current sampling circuit of the feeder line detection module through the golden finger socket;
the power supply terminal is used for accessing an interface of a plus or minus 12V power supply and providing power for all the feeder line detection modules and the data exchange unit;
the communication terminal is an RS485 interface, is connected with the data exchange unit and is connected with the insulation monitoring host through the port to perform data interaction;
the SD/OFF acquisition port is an interface for acquiring the SD and OFF state quantity of each branch, is connected with an auxiliary contact of a switch, is connected with the feeder line detection module through a golden finger socket, and is acquired by the feeder line detection module.
Further, the feed detection module includes the casing, access structure is both ends and below open-ended arch, the casing has and forms the parcel the inferior valve on access structure's both sides limit, golden finger socket locates the bottom of inferior valve, access structure's side is the vertically plane, access structure's top surface is the semicircle face.
Further, the main board indicating lamp or the branch indicating lamp includes:
a resistor R1, wherein a second end of the resistor R1 is connected with a first end of a resistor R3, a second end of the resistor R3 is connected with an anode of an LED, a cathode of the LED is connected with a second end of a resistor R2, and first ends of the resistor R1 and the resistor R2 are connected with a power supply;
a first end of the resistor R4, a second end of the resistor R4 is connected to a second end of the resistor R1 and a first end of the resistor R3, and a second end of the resistor R4 is connected to a cathode of the LED and a second end of the resistor R2 through a primary side of an optocoupler ISO 1.
Further, mainboard pilot lamp or branch road pilot lamp still include:
the second end of the resistor R3 is connected with the anode of the diode D1, and the cathode of the diode D1 is connected with the anode of the LED 1.
Further, the main board indicator light or the branch indicator light further comprises:
the resistance R5, the first end and the power VCC of resistance R5 are connected, the second end of resistance R5 passes through the vice limit ground connection of opto-coupler ISO1, opto-coupler ISO 1's 4 pins are connected with CPU electricity.
Further, still include bullet needle formula electricity mechanism and casing of getting, bullet needle formula electricity mechanism does the feed detects the module with the bottom plate power supply, bullet needle formula electricity mechanism of getting includes bullet needle and extension, the casing has the epitheca, the epitheca has to the circuit breaker extension, the extension has bottom surface down, bottom surface is higher than down when the installation the screw hole of the interface of being qualified for the next round of competitions of circuit breaker, the bullet needle is located the lower bottom surface of extension, when using, two bullet needle structures are located the screw hole top entering of circuit breaker and contact the electricity of getting, initial length has when the bullet needle atress not, when using at different circuit breakers, according to the difference of screw hole degree of depth the bullet needle passes through elastic adjustment length.
Furthermore, the detection plate and the side plate are connected with the base through a golden finger socket.
Further, the sensor component is arranged at the side opening of the channel structure.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the modular design is realized, and the problems of more secondary lines and complex wiring of a direct-current feeder screen are solved;
2. the problem that the direct-current Hall sensor is difficult to replace is solved, the part which is easy to damage is designed on the pluggable module, and the part which is difficult to damage is designed on the bottom plate, so that the maintenance and the replacement are greatly facilitated, the feeder line detection device can be replaced without power failure, and the pain point problems of false alarm and the like caused by the problems of the field sensor are solved;
3. the spring type elastic pin is adopted to supply electricity, the circuit breakers with different depths can be compatible, the problem that secondary wires are adopted for driving the on-off indicator lamp of the circuit breaker to supply electricity, and a plurality of secondary wires are arranged in a screen cabinet is solved, the problems of large workload and low efficiency of secondary wire connection are solved, and the contact electricity supply mode is adopted, so that the secondary wires are not needed, and the contact electricity supply is quick and convenient;
4. the indicating lamp is driven by collecting direct current voltage (220VDC or 110VDC) at the lower end of the switch, and for direct current power supply systems (110V/220V) with different voltage levels, the module can drive the indicating lamp without changing any software and hardware, and meanwhile, the on-off state of the switch is judged in a voltage mode. The system is applicable to two voltage levels, and on-off judgment of the switch can be realized;
5. because the design has a channel structure during module installation, directly contain the primary line in the arched passageway, just so can conveniently dismantle and maintain, the line footpath of the primary line that connects has fully been considered to the height and the width of arched passageway to and the module installation after stretch out the high scheduling problem of panel.
Drawings
Fig. 1 is the utility model discloses an open-type dc power supply system feeder leak current on-line monitoring device's schematic structure.
Fig. 2 is the schematic circuit structure diagram of the feed detection module of the open type dc power supply system feeder leakage current on-line monitoring device of the present invention.
Fig. 3 is the structural schematic diagram of the bottom plate of the feeder leakage current on-line monitoring device of the open-type dc power supply system of the present invention.
Fig. 4 is the structural schematic diagram of the indicator circuit of the open type dc power supply system feeder leakage current on-line monitoring device of the present invention.
Fig. 5 is the circuit structure schematic diagram of the feeder leakage current on-line monitoring device of the open-type dc power supply system of the present invention.
Fig. 6 is a schematic structural diagram of a feed detection module of the open type dc power supply system feeder leakage current on-line monitoring device.
In the figure: 100. a circuit breaker; 200. a feed detection module; 300. a base plate; 210. a main board; 220. detecting a plate; 230. a side plate; 240. a housing; 250. a channel structure; 260. A needle is flicked; 270. an extension portion; 310. a gold finger socket; 320. a sensor component; 330. A power supply terminal; 340. a communication terminal; 350. SD/OFF acquisition port.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
The device for online monitoring the leakage current of the feeder line of the open type direct current power supply system according to fig. 2, 3 and 5 comprises:
a circuit breaker 100, the circuit breaker 100 being connected to a power source, the circuit breaker 100 having an interface for connection to a load;
the feed detection module 200 is used for collecting primary voltage, namely voltage of a feeder branch; calculating the ground resistance of the feeder line branch; detecting the leakage current of the branch circuit; locally displaying branch related information; indicating the on-off state of the branch switch; the insulation information of the branch circuit is uploaded, the modular design is realized, the problems of more secondary lines of a direct-current feeder screen and complex wiring are reduced, the feed detection module 200 is connected with the circuit breaker 100, the feed detection module 200 is provided with a channel structure 250, and the channel structure 250 is used for providing a space for the primary line of the circuit breaker 100 to pass through the feed detection module 200 to be connected with a load;
Further, the feeding detection module 200 includes:
the main board 210, the main board 210 has a CPU, the CPU is connected with a switch state judgment circuit, a main board 210 indicator light, a key, a branch indicator light, a high voltage power circuit, an eercom storage module, a power circuit and a display screen, and the display screen is used for displaying data. The data can be insulation information, voltage information and insulation resistance obtained through calculation, and can be selectively displayed through keys, the keys can be touch keys or mechanical keys, when the branch where the branch is located has an insulation abnormal condition, the branch can be controlled to give an optical alarm in a screen flashing mode, and the display screen is an OLED (organic light emitting diode) or a liquid crystal display screen;
a detection board 220, said detection board 220 having a leakage current sensor excitation circuit, a leakage current sampling circuit and a power supply circuit;
a side board 230, the side board 230 having a signal path, a data switching center communication circuit and a power circuit.
Further, the base plate 300 includes:
the golden finger socket 310 is used for connecting a feeder line detection module and providing a power supply and a signal transmission line;
the sensor component 320 is composed of a sensor magnetic core, a coil and an electronic device, is an induction component of the sensor, and is connected with a leakage current sampling circuit of the feeder line detection module through the golden finger socket 310;
the power supply terminal 330 is used for accessing an interface of a +/-12V power supply and providing power for all the feeder line detection modules and the data exchange unit;
the communication terminal 340 is an RS485 interface, is connected with the data exchange unit, and is connected with the insulation monitoring host through the RS485 interface to perform data interaction;
and the SD/OFF acquisition port 350 is an interface for acquiring SD and OFF state quantities of a switch of each branch, is connected with an auxiliary contact of the switch, is connected with the feeder line detection module through the golden finger socket 310, and is acquired by the feeder line detection module.
Referring to fig. 1, the feeding detection module 200 includes a housing 240, the channel structure 250 is an arch with openings at both ends and a lower portion, the housing 240 has a lower case forming two side edges wrapping the channel structure 250, the gold finger socket 310 is disposed at a bottom end of the lower case, a side surface of the channel structure 250 is a vertical plane, a top surface of the channel structure 250 is a semi-circular arc surface, and when the module is installed, because the channel structure 250 is designed, a primary cable is directly contained in the arch channel, so that the module is convenient to detach and maintain, and the height and width of the arch channel fully consider the cable diameter of the connected primary cable, the height of the module extending out of the panel after installation, and other problems.
Referring to fig. 4, the main board 210 or the branch indicator includes:
a resistor R1, wherein a second end of the resistor R1 is connected with a first end of a resistor R3, a second end of the resistor R3 is connected with an anode of an LED, a cathode of the LED is connected with a second end of a resistor R2, and first ends of the resistor R1 and the resistor R2 are connected with a power supply;
a first end of the resistor R4, a second end of the resistor R4 is connected to a second end of the resistor R1 and a first end of the resistor R3, and a second end of the resistor R4 is connected to a cathode of the LED and a second end of the resistor R2 through a primary side of an optocoupler ISO 1.
Further, the main board 210 indicator light or the branch indicator light further includes:
the second end of the resistor R3 is connected with the anode of the diode D1, and the cathode of the diode D1 is connected with the anode of the LED 1.
Further, the main board 210 indicator light or the branch indicator light further includes:
the circuit comprises a resistor R5, wherein the first end of the resistor R5 is connected with a power supply VCC, the second end of the resistor R5 is grounded through the secondary side of the optocoupler ISO1, a 4 pin of the optocoupler ISO1 is electrically connected with a CPU, an indicator lamp is driven by collecting direct current voltage (220VDC or 110VDC) at the lower end of the switch, and for direct current power supply systems (110V/220V) with different voltage levels, a module can drive the indicator lamp without changing any software and hardware, and meanwhile the on-off state of the switch is judged in a voltage mode. The system is applicable to two voltage levels, and on-off judgment of the switch can be realized.
Wherein, the LED is an indicator lamp which needs to be driven. ISO1 is the opto-coupler device, is used for keeping apart the detection switch on-off state. KM +, KM-represents the two contacts where the circuit takes voltage, which in the actual product are pogo pins 260. When the switch on the system is closed, the switch is turned on up and down, and the elastic pin 260 at the lower end contacts the metal screw at the lower end, so that the voltage is transmitted to KM + KM-in the upper figure. The KM + and KM-terminals of the circuit of the above figure develop a dc voltage of 110VDC or 220 VDC. The voltage forms a loop through the R1, the R3, the D1, the LED and the R2, and a current for driving the LED to reflect light is generated, so that the LED is lightened. The other path forms a loop through the primary sides of R1, R4, ISO1 and R2, and generates current for driving the primary side of ISO1, so that the secondary side of ISO1 is driven to be conducted, signals of the TOCPU are changed, the controller can detect the change of the state, and the judgment of the on-off state of the switch is achieved. In circuit design, by designing the resistance values of R1, R2, R3 and R4, the application of voltages of 110VDC and 220VDC is realized; in designing the resistance value, the influence of the primary side of ISO1 on the circuit is taken into account. In the figure, D1 realizes the protection of the circuit and prevents the input reverse circuit from being damaged.
Referring to fig. 1, the power supply device further includes a latch 260 type power supply mechanism and a housing 240, the latch 260 type power supply mechanism supplies power to the feed detection module 200 and the bottom plate 300, the latch 260 type power supply mechanism includes a latch 260 and an extension portion 270, the housing 240 has an upper case, the upper case has the extension portion 270 extending to the circuit breaker 100, the extension portion 270 has a lower bottom surface, the lower bottom surface is higher than a screw hole of an outlet interface of the circuit breaker 100 when installed, the latch 260 is disposed on the lower bottom surface of the extension portion 270, when in use, two latch 260 structures are located above the screw hole of the circuit breaker 100 to enter and contact for power supply, the latch 260 has an initial length when not being subjected to power supply, when in use in different circuit breakers 100, the latch 260 adjusts the length through elasticity according to different screw hole depths, a spring type latch 260 is adopted for power supply, the circuit breaker 100 with different depths can be compatible, the problem that the secondary line is adopted for driving the on-off indicating lamp of the circuit breaker 100 to take power and the screen cabinet has more secondary lines is solved, the problems of large workload of secondary line wiring and low efficiency are solved, and the contact power taking mode is adopted, so that the secondary line is not needed, and the circuit breaker is fast and convenient.
Further, the detection plate 220 and the side plate 230 are connected to the base through a gold finger socket 310.
Referring to fig. 6, the sensor member 320 is disposed at the side opening of the channel structure 250. The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides an open-type direct current power supply system feeder leak current on-line monitoring device which characterized in that includes:
a feed detection module having a housing;
the channel structure is arranged on a path through which the primary wire passes in the shell and is used for the primary wire to pass;
a circuit breaker connected to a power source, the circuit breaker having an interface to connect to a load;
the feed detection module is connected with the circuit breaker and is provided with a channel structure, and the channel structure is used for providing a space for a primary line of the circuit breaker to penetrate through the feed detection module and be connected with a load;
the bottom plate, the bottom plate has the leakage current sensor, the bottom plate with the feed detects the module connection.
2. An open type direct current power supply system feeder leakage current on-line monitoring device according to claim 1, wherein the channel structure is an arch with openings at two ends and below.
3. The on-line feeder leakage current monitoring device for the open type direct current power supply system according to claim 1, further comprising a gold finger socket, wherein the shell has a lower shell which forms two side edges wrapping the channel structure, and the gold finger socket is arranged at the bottom end of the lower shell.
4. The open type direct current power supply system feeder leakage current on-line monitoring device of claim 1, wherein the side surface of the channel structure is a vertical plane, and the top surface of the channel structure is a semicircular arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123084756.3U CN217360252U (en) | 2021-12-09 | 2021-12-09 | Feeder leakage current online monitoring device of open type direct current power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123084756.3U CN217360252U (en) | 2021-12-09 | 2021-12-09 | Feeder leakage current online monitoring device of open type direct current power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217360252U true CN217360252U (en) | 2022-09-02 |
Family
ID=83041003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123084756.3U Active CN217360252U (en) | 2021-12-09 | 2021-12-09 | Feeder leakage current online monitoring device of open type direct current power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217360252U (en) |
-
2021
- 2021-12-09 CN CN202123084756.3U patent/CN217360252U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109560616A (en) | A kind of feeder means and DC feeder screen | |
| CN217360252U (en) | Feeder leakage current online monitoring device of open type direct current power supply system | |
| CN217034081U (en) | Pluggable distributed type direct-current power supply system feeder leakage current online monitoring device | |
| CN217034206U (en) | Indicator lamp of feeder leakage current on-line monitoring device of direct current power supply system | |
| CN217034207U (en) | Direct current power supply system feeder leakage current on-line monitoring device capable of achieving electricity taking through elastic pins | |
| CN114047373A (en) | Pluggable distributed direct-current power supply system feeder leakage current on-line monitoring device | |
| CN101975885B (en) | Comprehensive electric energy detector for direct-current power supplies | |
| CN209044027U (en) | NEW ADAPTIVE tripping outlet logic tester | |
| CN106019061A (en) | Electrical equipment grounding line grounding state monitoring device | |
| CN201311699Y (en) | Alarming probe line failure prompt device | |
| CN201307766Y (en) | Power lightning protection box | |
| CN104682248A (en) | Intelligent power distribution monitoring device with telecommand function | |
| CN201804043U (en) | Synthetic electric energy detection instrument for DC electric power | |
| CN211043642U (en) | Socket test circuit and socket tester | |
| CN203025277U (en) | Domestic power energy quality monitoring device | |
| CN209448505U (en) | A kind of feeder means and DC feeder screen | |
| CN209183084U (en) | A kind of comprehensive microcomputer protecting device of the route with anti-bouncing function of miniaturization microcomputer | |
| CN209486496U (en) | A kind of control device of firefighting fan control cabinet | |
| CN201852949U (en) | Detecting device | |
| CN206627588U (en) | A kind of failure detector and screen test device | |
| CN110223888A (en) | A kind of modularization hot plug integrated switch box | |
| CN217112465U (en) | Mutual inductance type three-phase uninterrupted meter-changing short-circuit tool | |
| CN208818783U (en) | A kind of multicore fine coaxial lines cable looks for a jig circuit | |
| CN218824453U (en) | Simple detector for electric meter on site | |
| CN217587379U (en) | Double-display intelligent nuclear phase electrified display device for high-voltage switch cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |