CN204241111U - A kind of switch cubicle accident intelligent early-warning device - Google Patents
A kind of switch cubicle accident intelligent early-warning device Download PDFInfo
- Publication number
- CN204241111U CN204241111U CN201420558211.2U CN201420558211U CN204241111U CN 204241111 U CN204241111 U CN 204241111U CN 201420558211 U CN201420558211 U CN 201420558211U CN 204241111 U CN204241111 U CN 204241111U
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- switch cubicle
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Abstract
The utility model discloses a kind of switch cubicle accident intelligent early-warning device, comprise multi way temperature current collection circuit, one road temperature current Acquisition Circuit is set in each switch cubicle, every road temperature current Acquisition Circuit comprises temperature sensor, current transformer, analog-to-digital conversion module and computing module, temperature sensor connects computing module by the analog-to-digital conversion module of coupling, current transformer connects computing module by the analog-to-digital conversion module of coupling, the signal output part of every road computing module connects a Gather and input end of contrast circuit, multiple signal output parts of contrast circuit connect central processing module respectively by I/O mouth, the signal output part of central processing module connects corresponding alarm display module.
Description
Technical field
The utility model relates to power safety technique field, particularly relates to a kind of switch cubicle accident intelligent early-warning device.
Background technology
Switch cubicle is electrical equipment complete equipment conventional in electric system, is widely used in 35kV and following electric system.Generally, switch cabinet equipment is installed intensive, and electrical distance is less, but in order to ensure safety, the switch cubicle of charging operation all needs to be in full closeding state.Totally-enclosed pattern is that the routine safety inspection of switch cubicle brings very large difficulty, even cannot carry out routine and list and index, so, defect in switch cubicle is difficult to be found in advance, until these defects further develop formation accident, cause device damage and have a power failure suddenly, could be found by staff.In addition, because in switch cubicle, space is less, equipment is installed intensive, when accident produces, be attended by the generation of electric arc, the source accident point causing accident to occur and the extensive damage district burnt out by electric arc, burst mix, and are difficult to confirm the true cause caused the accident, also for taking measure targetedly to bring difficulty.
The observation long-term through staff finds with fastidious, and the main cause that accident occurs is that equipment is burned because of overheated.By Q=I
2rt is known, and electric current flows through conductor and produces heat, and when the electric current flowing through conductor is the same, the resistance of conductor is larger, and the heat of generation is also more.In electrical part junction due to the impact by initial manufacture technique, material, joint area can be oxidized gradually, and resistance can increase gradually, when onesize electric current flows through joint, the heat that joint produces can increase greatly, and the amount of heat of gathering causes electric equipment to be burned, and causes serious accident.
Utility model content
The purpose of this utility model is to provide a kind of switch cubicle prior-warning device, effectively reduces because switch in-cabinet temperature raises the damage of facilities degree caused, effectively reminds before switch cubicle accident occurs.
The technical solution adopted in the utility model is:
A kind of switch cubicle accident intelligent early-warning device, comprise multi way temperature current collection circuit, one road temperature current Acquisition Circuit is set in each switch cubicle, every road temperature current Acquisition Circuit comprises temperature sensor, current transformer, analog-to-digital conversion module and computing module, temperature sensor connects computing module by the analog-to-digital conversion module of coupling, current transformer connects computing module by the analog-to-digital conversion module of coupling, the signal output part of every road computing module connects a Gather and input end of contrast circuit, multiple signal output parts of contrast circuit connect central processing module respectively by I/O mouth, the signal output part of central processing module connects corresponding alarm display module.
Described alarm display module adopts audible-visual alarm lamp.
The utility model gathers the change of switch in-cabinet temperature and electric current by temperature sensor summation current transformer, be digital quantity signal by the analog-signal transitions of collection again, send to computing module, after the ratio calculation of computing module, the ratio of calculating and normal range value are compared entering contrast circuit, determine that whether switch in-cabinet temperature is normal, effectively improve the accuracy rate of accident potential in prediction switch cubicle; Further, send alarm command by central processing module to corresponding alarm display module, the dangerous information of corresponding switch cubicle can be predicted, certain power failure check processing of staff of waking up of reporting to the police in advance, prevent accidental power failure, even have an accident and cause economic loss or casualties.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises multi way temperature current collection circuit, one road temperature current Acquisition Circuit is set in each switch cubicle, every road temperature current Acquisition Circuit comprises temperature sensor, current transformer, analog-to-digital conversion module and computing module, temperature sensor connects computing module by the analog-to-digital conversion module of coupling, current transformer connects computing module by the analog-to-digital conversion module of coupling, the signal output part of every road computing module connects a Gather and input end of contrast circuit, multiple signal output parts of contrast circuit connect central processing module respectively by I/O mouth, the signal output part of central processing module connects corresponding alarm display module.
The utility model adopts comparison expression determination methods to judge that whether switch in-cabinet temperature is normal.Due to the temperature in switch cubicle not only with conductor resistance, constantly change current related, be also subject to the impact of environment temperature, ventilation situation, therefore may set the temperature value of a standard hardly to judge that whether switch in-cabinet temperature normal.But, for the independently switch cubicle of each in same environment, by environment temperature, the impact of ventilation situation is identical, namely suffered ectocine is identical, and, switch cubicle material is also identical, so, can independently switch cubicle be overall as an electrical conductor resistance using one, think that conductor resistance is identical, therefore the change of its internal temperature is only relevant with size of current comparatively speaking, (error range can be set) when the change of temperature is consistent with curent change, namely the numerical value of temperature value compared with current value (T/I) is within the scope of certain error, then think normal, otherwise there is the accident potential of apparatus overheat scaling loss in explanation switch cubicle, alarm can be sent.
Principle of work of the present utility model:
The current value recorded is passed to computing module by analog-to-digital conversion module by the current transformer be serially connected in switch cubicle, the temperature value recorded is passed to computing module by analog-to-digital conversion module by the temperature sensor be arranged in switch cubicle, the temperature value of computing module according to input and the ratio of current value accounting temperature and electric current, the ratio calculated is passed to contrast circuit, result after is relatively passed to central processing module by contrast circuit, when the maximal value of ratio of the temperature in certain switch cubicle and electric current or the error of minimum value exceed certain limit, the accident potential that there is apparatus overheat scaling loss in this switch cubicle is described, central processing module by the switch cubicle signal transmission of correspondence to pilot lamp corresponding to alarm display module, corresponding pilot lamp flicker early warning, staff has a power failure according to the indicator lamp signal of flicker and checks corresponding switch cubicle internal fault.
Claims (2)
1. a switch cubicle accident intelligent early-warning device, it is characterized in that: comprise multi way temperature current collection circuit, one road temperature current Acquisition Circuit is set in each switch cubicle, every road temperature current Acquisition Circuit comprises temperature sensor, current transformer, analog-to-digital conversion module and computing module, temperature sensor connects computing module by the analog-to-digital conversion module of coupling, current transformer connects computing module by the analog-to-digital conversion module of coupling, the signal output part of every road computing module connects a Gather and input end of contrast circuit, multiple signal output parts of contrast circuit connect central processing module respectively by I/O mouth, the signal output part of central processing module connects corresponding alarm display module.
2. switch cubicle accident intelligent early-warning device according to claim 1, is characterized in that: described alarm display module adopts audible-visual alarm lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420558211.2U CN204241111U (en) | 2014-09-26 | 2014-09-26 | A kind of switch cubicle accident intelligent early-warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420558211.2U CN204241111U (en) | 2014-09-26 | 2014-09-26 | A kind of switch cubicle accident intelligent early-warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204241111U true CN204241111U (en) | 2015-04-01 |
Family
ID=52770592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420558211.2U Expired - Fee Related CN204241111U (en) | 2014-09-26 | 2014-09-26 | A kind of switch cubicle accident intelligent early-warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204241111U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054763A (en) * | 2016-05-19 | 2016-10-26 | 杭州施厚能源科技有限公司 | Intelligent switch cabinet online measurement and control device |
| CN108760083A (en) * | 2018-07-03 | 2018-11-06 | 汉能移动能源控股集团有限公司 | Working temperature detection method and system and abnormity early warning and system of solar module |
-
2014
- 2014-09-26 CN CN201420558211.2U patent/CN204241111U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054763A (en) * | 2016-05-19 | 2016-10-26 | 杭州施厚能源科技有限公司 | Intelligent switch cabinet online measurement and control device |
| CN106054763B (en) * | 2016-05-19 | 2018-12-21 | 杭州施厚能源科技有限公司 | Intelligent switchboard online monitoring method device |
| CN108760083A (en) * | 2018-07-03 | 2018-11-06 | 汉能移动能源控股集团有限公司 | Working temperature detection method and system and abnormity early warning and system of solar module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20180926 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |