CN207528355U - A kind of switchgear passive and wireless high-voltage contact on-line temperature monitoring device - Google Patents

A kind of switchgear passive and wireless high-voltage contact on-line temperature monitoring device Download PDF

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Publication number
CN207528355U
CN207528355U CN201721662965.2U CN201721662965U CN207528355U CN 207528355 U CN207528355 U CN 207528355U CN 201721662965 U CN201721662965 U CN 201721662965U CN 207528355 U CN207528355 U CN 207528355U
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China
Prior art keywords
switchgear
temperature
primary processor
equipment
wireless
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CN201721662965.2U
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Inventor
何思阳
甘卫华
周澜
王宁
彭星贵
张堂松
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Guizhou Power Grid Co Ltd
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Guizhou Power Grid Co Ltd
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Abstract

The utility model discloses a kind of switchgear passive and wireless high-voltage contact on-line temperature monitoring devices, primary processor and temperature sensor including being arranged in switchgear temperature measuring point, temperature sensor is connected to the signal receiving end of primary processor, primary processor is connected with equipment power supply, equipment power supply is connected to CT sensing electricity getting devices, and wireless transmitter module is also associated on primary processor.The utility model carries out taking electricity by CT sensing electricity getting devices, it is powered for primary processor, primary processor carries out temperature signal reception and transmitted wirelessly, and makes patrol personnel far between electrification, it guarantees personal safety, it finds that switchgear is abnormal in time, ensures equipment operational safety, wireless signal is completely isolated by primary electricity and secondary electricity, it avoids climbing electric danger, it realizes the work of equipment self-powered, reaches equipment once mounting, the effect of permanent maintenance-free.

Description

A kind of switchgear passive and wireless high-voltage contact on-line temperature monitoring device
Technical field
The utility model belongs to high-voltage contact temperature monitoring equipment technical field, and in particular to a kind of switchgear passive and wireless High-voltage contact on-line temperature monitoring device.
Background technology
The important equipment such as switchgear, busbar joint, the outdoor chopper switch of substation.In During Process of Long-term Operation, open The contact of pass is connected with busbar to generate heat when positions due to aging causes contact resistance excessive, and the temperature of these heating positions is difficult Monitoring, thus eventually leads to accident.
Closed cabinet cannot be opened in operation, and therefore, it is difficult to measure cabinet in operation to be inscribed(It touches)The actual temperature of head, As found and handling to connect not in time(It touches)The excessively hot defect of head, serious threat electricity safety production.Fixed switching cabinet each into Outgoing line interval shares 33 or 39 that load current flows through and connects(Contact), each inlet-outlet line interval of trolley movable switch cubicle shares Flow through 24 of load current(Or more)It connects(Contact).These connect(It touches)Head directly flows through load current, when load is larger There are connecing for hidden danger(It touches)Head will seriously generate heat.Since heat generating spot is in sealed cabinet, running cabinet door forbids opening, on duty Personnel can not be by normally monitoring that means find heating defect.The generation once contact fever seriously necessarily causes the accident, influences System safety operation.
A lot of switch overheat accidents have occurred in substation, have caused fire and the power outage of large area, solution switched Heat problem is the key that prevent such accident to occur, and it is the important hand for ensureing high-tension apparatus safe operation to realize on-line temperature monitoring Section.Current many middle high-low pressure power equipments are because of long-term continuous use, it may appear that situations such as high temperature, short circuit, excess load operate, very Easily cause the safety accidents such as large-area power-cuts, fire.
Traditional temp measuring method is to use infrared temperature measurement gun personal monitoring, but this method there are problems that:
1. infrared temperature measurement gun can only rectilinear point detection, and often blocked and can not measure needs artificial periodical inspection, work It is big to make intensity, monitoring is not in time;Closely thermometric, safety coefficient are low for need;Infrared radiation thermometer price is high;
2. it is unable to temperature measurement on-line, it is impossible to automatic interpretation of records data;
3. it is unable to teletransmission data;
4. manual site is needed to test, dangerous, synthesis is of high cost.
5. the warm wax disk(-sc) method of examination, temperature indicating record labeling acts is easy to aging and come off;Temperature indicating range is narrow;Accuracy is low;Manually Operation, can not realize automatic management.
Invention content
The utility model solve the technical issues of be:A kind of switchgear passive and wireless high-voltage contact on-line temperature monitoring is provided Device, to solve above-mentioned problems of the prior art.
The technical solution that the utility model is taken is:A kind of switchgear passive and wireless high-voltage contact on-line temperature monitoring dress It puts, primary processor and temperature sensor including being arranged in switchgear temperature measuring point, temperature sensor are connected to the letter of primary processor Number receiving terminal, primary processor are connected with equipment power supply, and equipment power supply is connected to CT sensing electricity getting devices, is also connected on primary processor There is wireless transmitter module.
Wireless transmitter module is connected to switchgear temperature measuring equipment, and switchgear temperature measuring equipment is connected to string by RS485 interfaces Mouth server, serial server are connected to main station system by network module.
The setting of switchgear temperature measuring point is multiple.
The beneficial effects of the utility model:Compared with prior art, the effect of the utility model is as follows:
(1)The utility model carries out taking electricity by CT sensing electricity getting devices, is powered for primary processor, primary processor into Trip temperature signal is received and is transmitted wirelessly, and patrol personnel is made to guarantee personal safety far between electrification, find switchgear in time It is abnormal, ensure equipment operational safety, wireless signal is completely isolated by once electricity and secondary electricity, avoids climbing electric dangerous, realization equipment Self-powered works, and reaches equipment once mounting, the effect of permanent maintenance-free;
(2)The utility model is easy to implement Centralized Monitoring, reduces artificial patrol, cost-effective;It is accurate to find switchgear hair Heat anomaly, timely processing anomalous event are reduced because overheat leads to ignition of cable, switchgear explosion, and the direct economy brought damages It becomes estranged casualties;It was found that hiding exception, notify at once, reduce economic loss.
Description of the drawings
Fig. 1 is the control principle structure diagram of the utility model;
Fig. 2 is the system connection diagram of the utility model.
Specific embodiment
Below in conjunction with the accompanying drawings and the utility model is described further in specific embodiment.
Embodiment 1:As shown in Figs. 1-2, a kind of switchgear passive and wireless high-voltage contact on-line temperature monitoring device, including cloth The primary processor and temperature sensor in switchgear temperature measuring point are put, temperature sensor is connected to the signal receiving end of primary processor, Primary processor is connected with equipment power supply, and equipment power supply is connected to CT sensing electricity getting devices, is also associated with wirelessly sending out on primary processor Penetrate module.
Wireless transmitter module is connected to switchgear temperature measuring equipment, and switchgear temperature measuring equipment is connected to string by RS485 interfaces Mouth server, serial server are connected to main station system by network module.
The setting of switchgear temperature measuring point is multiple.
Passive wireless temperature measuring device is made of temperature sensor and temperature temperature measuring equipment two parts, and temperature sensor is passive Wireless temperature measurement transmitting module is mountable on heat generating spot any in cabinet, is carried out data transmission using wireless module, can telemetering it is every The heating problem of one significant points including the non-visual position such as middle-placed switch cabinet Mume flower contact, and can in real time emit detection data It goes out, by the temperature temperature measuring equipment displays temperature being mounted on instrument door and receives record.The power supply that the temperature sensor uses Mode takes electricity for CT, and operation principle generates induced electromotive force for electric current across magnetic field(Induced voltage), it is internal emission module Circuit provides working power, and schematic diagram is as shown in Figure 1.
Entire monitoring system includes following several parts, as shown in Figure 2:
(1)CT sensing electricity getting device watchband type radio temperature sensors
As the most terminal of entire monitoring system, a sensor, Timing measurement temperature are installed on each temperature monitoring point Afterwards, temperature data is wirelessly passed to thermometric communicating terminal, radio temperature sensor is mostly installed at easy fever Cable connection at, transformer with switch etc. surface.
Each radio temperature sensor is numbered with unique 32bits, needs to record each sensing when actual installation uses The infield of device, and be stored in temperature monitoring workstation computer database together with numbering.
(2)Electric terminal temperature measuring equipment
According to application scenario and demand difference, the electric terminal temperature measuring equipment of different installation and purposes can be selected. The present apparatus is responsible for receiving temperature data and sensor number that radio temperature sensor is sent, these data are by buffer-stored at it In internal storage.The number and temperature data of each sensor after communication interface receives the communications command of temperature monitoring main website It sends.
Device can establish a communications link with wireless sensor automatically, and it is only that the general equipment can receive entire transformer and distribution power station The temperature data that all wireless sensors in vertical spatial dimension are sent out, typical case is receives in switchgear corresponding with device 3 ~ 15 temperature measuring point temperature datas.
(3)Serial server
Each transformer and distribution station needs to set up a serial server, in realizing that interface conversion, multi-protocols compatibility, data preserve The effect turned, the equipment one end are connected through RS485 communication lines with the RS485 interfaces of wireless temperature measuring device, and the other end passes through Ethernet line is connected with main station system computer.
Serial server acquires the running temperature data of each monitoring point from wireless temperature measuring device, makees long-term protect in the database It deposits, data information library is established for monitoring center main website, allow the temperature change that backstage temperature detection monitoring system shows monitoring point bent Line, and analyzed, once find that temperature overheating or steep temperature rise are alarmed immediately.
(4)Main station system temperature monitoring center
Main station system temperature monitoring management computer is established at automatically-monitored center or control centre, online temperature is installed Monitoring system by the communication line being laid with, receives the gathered data or real by communication server that communication manager preserves When collecting temperature data, entire temp measuring system is the core of temperature automatic management, can realize that real time data is adopted in systems Collection, data sheet classified inquiry, printing, data and curves function, temperature anomaly alarm, switchgear running state real-time monitoring etc. are complete The intelligentized management in orientation.
The functional characteristics of monitoring system:
(1)Each temp probe has unique ID number
While wireless sensor sends point being monitored temperature, the number of its own(ID number)Also transmission comes out, this When a little data are ultimately transmitted to computer, computer is according to the sensor number and infield preserved in the database in advance Relationship automatically determines the temperature of each monitoring point.
This feature, which is very suitable for substation, has the application of a large amount of monitoring points, improves the degree of automation of system, subtracts Cumbersome hand-kept work during light artificial thermometric.
(2)Wireless temperature data transmission
Using wireless connection between sensor and temperature measurement terminal, do not need to increase additional line under complicated power grid environment Road, had not only facilitated the installation and maintenance of system, but also reduced the influence to electric power netting safe running, make system safety, flexibly Property is greatly improved.
Wireless communication selection works in ISM working frequencies, to human body fanout free region, to surrounding devices without electromagnetic interference, meets FCC standards and national radio management provide.
(3)Daily 24 hours continuous on-line monitorings
Sensor only needs have the relatively Smaller load more than 30A just can be at regular intervals in the circuit monitored(It can be with thing First set)Continue to emit automatically the temperature data of a monitoring point, avoid asking of needing replacing after battery powered scheme out of power In addition topic, non-maintaining, long-life computer real-time collecting and record the temperature datas of all monitoring points, note abnormalities and report immediately It is alert.Solve the temp measuring methods such as the warm piece of examination, infrared need manually to on-the-spot make an inspection tour, scan occasion a delay caused by failure.
(4)System has the function of trend analysis
The temperature data that each monitoring point measures is made to keep records of, and analyzed in real time for a long time.To temperature change The monitoring point being stepped up is presented, before temperature does not reach upper limit value, early warning is carried out in advance, Failure elimination in rudiment shape State.
Monitoring system has following features:
(1)Real-time:Temperature acquisition time interval can be set by second grade, ensured the record of data, analyzed promptly and accurately, Reliable basis is provided for overhaul of the equipments, production scheduling etc..
(2)Long-life:Inside without power supply components such as batteries, can reliable continuous service, service life is more than 5 years.
(3)Accuracy:Reachable ± 1 DEG C of measurement accuracy.
(4)Systematicness:It can combine together with comprehensive automation of electric power system system, expand existing system function, realize number According to shared, convenient management.
(5)Safety:Equipotential, single-point, insulating mounting do not have any connection conducting wire, facilitate installation maintenance, and system has There is high security reliability.
(6)Low-cost high-efficiency benefit:After the system, the temperature measurer of purchasing expensive can be saved(Such as infrared thermoviewer, point Formula surveys steady instrument etc.);Personnel can be saved, improve working efficiency;Carry out maintenance of equipment with a definite target in view, reduce maintenance workload; Reduction accident.
The above, only specific embodiment of the present utility model example, the scope of protection of the utility model not office It is limited to this.Be familiar in the technical scope that the those skilled in the art disclose in the utility model, can easily find variation or Alternative, these should be covered within the scope of the utility model.For this purpose, the scope of protection of the utility model should be with Subject to the scope of the claims.

Claims (3)

1. a kind of switchgear passive and wireless high-voltage contact on-line temperature monitoring device, it is characterised in that:Including being arranged in switchgear The primary processor and temperature sensor of temperature measuring point, temperature sensor are connected to the signal receiving end of primary processor, and primary processor connects Equipment power supply is connected to, equipment power supply is connected to CT sensing electricity getting devices, wireless transmitter module is also associated on primary processor.
2. a kind of switchgear passive and wireless high-voltage contact on-line temperature monitoring device according to claim 1, feature exist In:Wireless transmitter module is connected to switchgear temperature measuring equipment, and switchgear temperature measuring equipment is connected to serial port service by RS485 interfaces Device, serial server are connected to main station system by network module.
3. a kind of switchgear passive and wireless high-voltage contact on-line temperature monitoring device according to claim 1, feature exist In:The setting of switchgear temperature measuring point is multiple.
CN201721662965.2U 2017-12-04 2017-12-04 A kind of switchgear passive and wireless high-voltage contact on-line temperature monitoring device Active CN207528355U (en)

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CN201721662965.2U CN207528355U (en) 2017-12-04 2017-12-04 A kind of switchgear passive and wireless high-voltage contact on-line temperature monitoring device

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CN201721662965.2U CN207528355U (en) 2017-12-04 2017-12-04 A kind of switchgear passive and wireless high-voltage contact on-line temperature monitoring device

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109186796A (en) * 2018-10-15 2019-01-11 江苏久创电气科技有限公司 A kind of CT formula passive wireless temperature measuring device applied to switchgear
CN109374149A (en) * 2018-10-30 2019-02-22 国网陕西省电力公司铜川供电公司 A kind of switch cabinet temperature on-line monitoring system using NTC temperature measurement circuit
CN110095203A (en) * 2019-06-27 2019-08-06 国网江苏省电力有限公司盐城供电分公司 A kind of temperature of cable junction remote supervision system and its method based on NB-IoT
CN111879439A (en) * 2020-07-15 2020-11-03 首钢长治钢铁有限公司 Intelligent temperature monitoring system for high-voltage circuit breaker of fan
CN112789381A (en) * 2018-07-10 2021-05-11 易捷艾玛公司 Device for accessing an underground or aboveground municipal engineering infrastructure with a multi-protocol communication module, and system for managing a set of access devices

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112789381A (en) * 2018-07-10 2021-05-11 易捷艾玛公司 Device for accessing an underground or aboveground municipal engineering infrastructure with a multi-protocol communication module, and system for managing a set of access devices
CN109186796A (en) * 2018-10-15 2019-01-11 江苏久创电气科技有限公司 A kind of CT formula passive wireless temperature measuring device applied to switchgear
CN109374149A (en) * 2018-10-30 2019-02-22 国网陕西省电力公司铜川供电公司 A kind of switch cabinet temperature on-line monitoring system using NTC temperature measurement circuit
CN110095203A (en) * 2019-06-27 2019-08-06 国网江苏省电力有限公司盐城供电分公司 A kind of temperature of cable junction remote supervision system and its method based on NB-IoT
CN111879439A (en) * 2020-07-15 2020-11-03 首钢长治钢铁有限公司 Intelligent temperature monitoring system for high-voltage circuit breaker of fan

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