CN205643544U - Direct current feeder monitoring devices - Google Patents
Direct current feeder monitoring devices Download PDFInfo
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- CN205643544U CN205643544U CN201620253019.1U CN201620253019U CN205643544U CN 205643544 U CN205643544 U CN 205643544U CN 201620253019 U CN201620253019 U CN 201620253019U CN 205643544 U CN205643544 U CN 205643544U
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Abstract
The utility model provides a direct current feeder monitoring devices has the electron auxiliary contact, the electron is reported an emergency and asked for help or increased vigilance contact, insulation against ground detection and is exchanged A number of functions such as scurrying into the detection. Including the shell, communication interface terminal, direct current feeder input terminal and direct current feeder output terminal on the shell. Be provided with the circuit board in the shell, the circuit board is including input sampling circuit, output sampling circuit, load current sampling circuit, processor circuit, communication interface circuit. Direct current feeder input terminal, output connect the processor circuit are connected to input sampling circuit's input, direct current feeder output terminal, output connect the processor circuit are connected to output sampling circuit's input.
Description
Technical field
This utility model relates to technical field of direct current power, is specifically related to a kind of DC feeder monitoring device.
Background technology
At present; domestic feeder line sensor device function singleness; the switching value information of feeder line can only be monitored; such as information such as tripping operation, open circuit, short circuit, insulation leakagel volume leakages; but the exchange that cannot detect in straight-flow system seals in, the exchange string electric fault in straight-flow system is then Grounding the most serious in straight-flow system, after there is exchange string electric fault in straight-flow system; very likely cause the misoperation of protection, endanger huge.
According to the up-to-date straight-flow system anti-regulation of arranging of safety, after straight-flow system occurs exchange string electric fault, D.C. isolation monitoring device need to send warning signal in time, and records the time that fault occurs.And existing Insulation Inspection Device for Direct-Current System does not provides effective solution to exchange string electric fault, after causing straight-flow system that exchange string electric fault occurs, attendant can not process in time, the safety of harm straight-flow system.
In current straight-flow system, if exchange to be monitored seals in situation, just also need to that independent exchange is installed again and seal in detection sensor, need to additionally set up detection control circuit, increase system cost.
At present, the existing Partial DC power-supply system of state's net have employed feeder line monitoring sensor, and no matter this sensor is the process of the collection of switch state signal, fault-signal, or the transmission etc. of feeder line status signal, all uses analogue signal.Analog signal lines is point-to-point output, and circuit controls single independence, and circuit node increases, and line construction is complicated, and wire rod consumption is huge, is not easy to intensive, networking and intelligentized management.
Utility model content
The purpose of this utility model is for the deficiencies in the prior art, it is provided that a kind of Novel DC feeder line monitoring device, this DC feeder monitoring device can solve the problems referred to above well.
For reaching above-mentioned requirements, this utility model adopts the technical scheme that: provide a kind of DC feeder monitoring device, this DC feeder monitoring device includes that shell, shell are provided with communication interface terminal, DC feeder input terminal and DC feeder lead-out terminal, is provided with circuit board in shell；Circuit board includes input sampling circuit, output sample circuit, load current sample circuit, processor circuit, communication interface circuit, and the input of input sampling circuit connects DC feeder input terminal, and the outfan of input sampling circuit connects processor circuit；The input of output sample circuit connects DC feeder lead-out terminal, and the outfan of output sample circuit connects processor circuit；The input of load current sample circuit connects major loop, and the outfan of load current sample circuit connects processor circuit, and the input of communication interface circuit connects processor circuit, outfan connecting communication Interface Terminal.
This DC feeder monitoring device has the advantage that as follows:
(1) the signal sample circuit mode of this device is unique, sensitivity is the highest, when DC feeder system occur overload, short circuit, under-voltage, leak electricity, exchange scurry into, the abnormal phenomena such as direct current is altered mutually time, monitoring device (can be determined by system capacitance) within the 1-10 second, capture abnormal voltage and current signal in time, and send alarm to system in time, to ensure the properly functioning of straight-flow system.The sensitive fast response time of this device, well below the GB response time requirement of 180 seconds.
(2) RS485 communication structure is used, can be that each this monitoring device distributes an independent address, every 12 these monitoring devices become one group, the communication interface terminal of 12 these monitoring devices in a group use one group of conductor in parallel be connected to main control computer after getting up, main control computer can identify it is which monitoring device have issued fault message by address, which reduce the consumption connecting wire, it is greatly simplified line construction, save the space shared by connection line, reduce substantial amounts of wiring workload, reduce the totle drilling cost of DC System Monitoring.And this communication modes, also it is the intelligentized updating of DC monitoring system, creates condition.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing further understanding of the present application, constitute the part of the application, use identical reference number to represent same or analogous part in the drawings, the schematic description and description of the application is used for explaining the application, is not intended that the improper restriction to the application.In the accompanying drawings:
Fig. 1 is the structural representation of the application；
Fig. 2 is the structural representation of the application circuit board.
Detailed description of the invention
For making the purpose of the application, technical scheme and advantage clearer, below in conjunction with drawings and the specific embodiments, the application is described in further detail.
In the following description, to " embodiment ", " embodiment ", " example ", " example " etc. quote the embodiment showing so to describe or example can include special characteristic, structure, characteristic, character, element or limit, but the most each embodiment or example necessarily include special characteristic, structure, characteristic, character, element or limit.It addition, reuse phrase " according to an embodiment of the application " although it is possible to refer to identical embodiment, but it is not necessarily referring to identical embodiment.
For the sake of simplicity, eliminate in below describing and well known to a person skilled in the art some technical characteristic.
An embodiment according to the application, it is provided that a kind of DC feeder monitoring device, as shown in Figure 1 and Figure 2, including shell 9, shell 9 is provided with communication interface terminal 10, DC feeder input terminal 12 and DC feeder lead-out terminal, is provided with circuit board in shell 9；Circuit board includes input sampling circuit 1, output sample circuit 2, load current sample circuit 3, processor circuit 4, communication interface circuit 5, the input of input sampling circuit 1 connects DC feeder input terminal 12, and the outfan of input sampling circuit 1 connects processor circuit 4；The input of output sample circuit 2 connects DC feeder lead-out terminal, and the outfan of output sample circuit 2 connects processor circuit 4；The input of load current sample circuit 3 connects major loop, and the outfan of load current sample circuit 3 connects processor circuit 4, and the input of communication interface circuit 5 connects processor circuit 4, outfan connecting communication Interface Terminal 10.
An embodiment according to the application, the circuit board of this DC feeder monitoring device also includes that sound and light alarm interface circuit 7, sound and light alarm interface circuit 7 electrically connect with processor circuit 4, and sound and light alarm interface circuit 7 can point out abort situation, facilitates trouble shoot.
An embodiment according to the application, the communication interface circuit 5 of this DC feeder monitoring device uses RS485 communication structure, can be that each this monitoring device distributes an independent address, every 12 these monitoring devices become one group, the communication interface terminal 10 of 12 these monitoring devices in a group uses one group of conductor in parallel be connected to main control computer after getting up, and main control computer can identify it is which monitoring device have issued fault message by address.The mode of communication interface terminal 10 so in parallel decreases the consumption connecting wire, is greatly simplified line construction, saves the space shared by connection line, reduce substantial amounts of wiring workload, reduces the totle drilling cost of DC System Monitoring.
An embodiment according to the application, the processor circuit 4 of this DC feeder monitoring device includes timing module and is prefixed the ampere-time characteristic module of ampere-time characteristic curve.
An embodiment according to the application, the shell 9 of this DC feeder monitoring device is provided with the input attachment screw 11 supporting with DC feeder input terminal 12, and the output attachment screw 8 supporting with DC feeder lead-out terminal, easy to connect.
An embodiment according to the application, is provided with guide rail card 13 bottom the shell 9 of this DC feeder monitoring device, and this guide rail card 13 utilizes the standard rail that normal air switchs, and can install this monitoring device the most quickly.
Input sampling circuit 1 in this utility model is sent to processor circuit 4 after being changed by input voltage U1, output sample circuit 2 is sent to processor circuit 4 after being changed by output voltage U2, load current sample circuit 3 is sent to processor circuit 4 after being changed by load current I, timing module record separating brake t movement time is also sent to processor circuit 4, processor circuit 4 after receiving above real time data with ampere-time characteristic curve ratio relatively, data are comprehensively analyzed, judge DC feeder system state now, and output signal to communication interface circuit 5 and acousto-optic remote alarm interface circuit 7.
Embodiment described above only represents several embodiments of the present utility model, and it describes more concrete and detailed, but can not be interpreted as the restriction to this utility model scope.It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into this utility model protection domain.Protection domain the most of the present utility model should be as the criterion with described claim.
Claims (6)
1. a DC feeder monitoring device, including shell, it is characterised in that described shell is provided with communication interface terminal, DC feeder input terminal and DC feeder lead-out terminal, is provided with circuit board in described shell；Described circuit board includes input sampling circuit, output sample circuit, load current sample circuit, processor circuit, communication interface circuit, the input of described input sampling circuit connects DC feeder input terminal, and the outfan of input sampling circuit connects processor circuit；The input of described output sample circuit connects DC feeder lead-out terminal, and the outfan of output sample circuit connects processor circuit；The input of described load current sample circuit connects major loop, and the outfan of load current sample circuit connects processor circuit, and the input of described communication interface circuit connects processor circuit, outfan connecting communication Interface Terminal.
DC feeder monitoring device the most according to claim 1, it is characterised in that: described circuit board also includes that sound and light alarm interface circuit, described sound and light alarm interface circuit electrically connect with processor circuit.
DC feeder monitoring device the most according to claim 1, it is characterised in that: described communication interface circuit uses RS485 communication structure.
DC feeder monitoring device the most according to claim 1, it is characterised in that: described processor circuit includes timing module and is prefixed the ampere-time characteristic module of ampere-time characteristic curve.
DC feeder monitoring device the most according to claim 1, it is characterised in that: it is provided with the input attachment screw supporting with DC feeder input terminal, and the output attachment screw supporting with DC feeder lead-out terminal on described shell.
DC feeder monitoring device the most according to claim 1, it is characterised in that: described outer casing bottom is provided with guide rail card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620253019.1U CN205643544U (en) | 2016-03-30 | 2016-03-30 | Direct current feeder monitoring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620253019.1U CN205643544U (en) | 2016-03-30 | 2016-03-30 | Direct current feeder monitoring devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205643544U true CN205643544U (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620253019.1U Active CN205643544U (en) | 2016-03-30 | 2016-03-30 | Direct current feeder monitoring devices |
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| CN (1) | CN205643544U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208372A (en) * | 2020-02-05 | 2020-05-29 | 电子科技大学 | Feeder line monitoring device supporting magnetic balance current sensor and switching value input |
-
2016
- 2016-03-30 CN CN201620253019.1U patent/CN205643544U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208372A (en) * | 2020-02-05 | 2020-05-29 | 电子科技大学 | Feeder line monitoring device supporting magnetic balance current sensor and switching value input |
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