CN104298276A - Internal temperature monitoring device of electrical equipment mechanism - Google Patents
Internal temperature monitoring device of electrical equipment mechanism Download PDFInfo
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- CN104298276A CN104298276A CN201410547639.1A CN201410547639A CN104298276A CN 104298276 A CN104298276 A CN 104298276A CN 201410547639 A CN201410547639 A CN 201410547639A CN 104298276 A CN104298276 A CN 104298276A
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Abstract
An internal temperature monitoring device of an electrical equipment mechanism comprises an electrical heater and a temperature probe, and further comprises a temperature monitoring adjustment instrument; the temperature monitoring adjustment instrument comprises a temperature detection input module, an isolation input module, an isolation output module, a digital quantity input and output module, a microprocessor, an ultra-wide temperature liquid crystal display and an input keyboard; the temperature probe is connected with the temperature detection input module; the isolation input module, the isolation output module and the digital quantity input and output module are connected; the temperature detection input module, the digital quantity input and output module, the ultra-wide temperature liquid crystal display and the input keyboard are connected with the microprocessor; the isolation output module is connected with the electrical heater; the microprocessor is connected with a transformer substation monitoring system through a network interface. The internal temperature monitoring device of the electrical equipment mechanism is a necessary technical means under the situation that an electric system develops to be intelligent and unattended, and can assist operation staff in monitoring temperature in time, maintaining abnormal equipment in time and ensuring safe and stable operation of a power grid.
Description
Technical field
The present invention relates to a kind of monitoring device, specifically a kind of electrical switchgear mechanism internal temperature monitoring regulating device.
Background technology
Main operating mode in current big-and-middle-sized electric equipment operation progressively realizes intelligent collection and monitor, but equipment auxiliary body because structure is relatively simple, without reasons such as electrical operation parameter and observing and controlling means shortages, as the external conditions such as humiture do not cause enough attention.The electrical equipments such as the circuit breaker mechanism case applied in electrical network, box-type substation are because of its inner structure complexity, and each electronic component requires higher to working temperature environment, and general minimum operating temperature is-10 DEG C.But at the western large subordinate's extremely frigid zones of China, the winter low temperature phase is long, and day and night temperature is comparatively large, and-20 DEG C of temperature are common, and minimum temperature reaches less than-40 DEG C and extreme weather is more frequent.Mechanism's assisted heating device longevity of service, failure rate are high.The electrical equipment accident that frequent generation in recent years causes because of low temperature is of common occurrence, as oil and gas path fault, instrument and meter is malfunctioning, occurs false oil level, apparent density etc., even there is pipeline bursting by freezing oil and gas leakage accident, have a strong impact on normal operation and the power grid security of electrical equipment.
At present for ensureing electric equipment operation temperature conditions, generally install ancillary heating equipment, automatic switching under temperature controls, but cannot remote monitoring internal operating temperature; Ancillary heating equipment is made up of electric heater, temperature controller etc., easily breaks down in long-time running, and maintenance work amount is large, limits, duty detection difficult by operating ambient temperature condition.According to statistics, the electric ancillary heating equipment annual in western each province failure rate 3% ~ 10%, concentrates and occurs in March annual November to next year.Ancillary heating equipment generally designs in the bottom of electrical switchgear mechanism case or corner, in the lower situation of external temperature, due to reasons such as inner structures, air cyclicity is poor, can not ensure device interior equalized temperature, namely ancillary heating equipment can not ensure the working temperature improving every nook and cranny equipment.Power network development is rapid in recent years, and Guo Wang company implements regulation and control integration, and transformer station all achieves remote monitoring and unattended, and the monitoring of inside electric appliance working temperature becomes the essential condition that guarantee equipment runs more.
Summary of the invention
A kind of electrical switchgear mechanism internal temperature is the object of the present invention is to provide to monitor regulating device; This device can gather the temperature information of electrical switchgear mechanism box house, and temperature information is uploaded in real time in operating monitoring system of electric substation, well heater is started in time for inside electric appliance each element minimum operating temperature condition, when equipment working temperature minimum point is lower than setting value, initiative alarming is sent to supervisory system, make monitor staff grasp equipment working temperature and ancillary heating equipment duty, overhaul ancillary heating equipment in time.
To achieve these goals, the technical scheme taked of the present invention is as follows: a kind of electrical switchgear mechanism internal temperature monitoring regulating device; Comprise electric heater, temp probe; It is characterized in that: also comprise monitoring temperature adjusting apparatus, monitoring temperature adjusting apparatus comprises temperature detection load module, Isolation input module, isolation and amplifier module, number connect test module, microprocessor, ultra-wide temperature LCD, input keyboard; Temp probe is connected with temperature detection load module, Isolation input module, isolation and amplifier module and number connect test model calling, temperature detection load module, number connect test module, ultra-wide temperature LCD, input keyboard are all connected with microprocessor, and isolation and amplifier module is connected with electric heater; Microprocessor is connected to monitoring system of electric substation by network interface.
The present invention, to the comprehensive temperature monitoring in monitoring equipment inside, controls heating and wind circulating device automatically, utilizes network communication by monitoring result active upload and reports to the police to Surveillance center.
Electric heater of the present invention adopts blower fan well heater; Temp probe is at least two, adopts thermocouple temperature probe, need by monitoring of equipment, be arranged on the multiple different monitoring points of inside electric appliance respectively, utilize multiple thermocouple temperature probe to the operational temperature conditions Real-Time Monitoring of electrical switchgear mechanism internal electronic element, Monitoring Data is uploaded monitoring system of electric substation.When minimum point device temperature lower than setting value (start wind recycle units and 1000W blower fan well heater lower than-10 DEG C, continue under be reduced to-12 DEG C, lower than sending three grades of yellow when-15 DEG C respectively, secondary is orange, one-level is red) send initiative alarming to monitoring system of electric substation, monitor staff is made to grasp equipment working temperature and ancillary heating equipment duty, in time notice operation maintenance personnel maintenance ancillary heating equipment.Blower fan heating appliances is for wind circulation and supplementary heating function, inside electric appliance air circulation can be made, make device interior each corner equalized temperature, guarantee the operational temperature conditions of each element, temperature reaches ratings blower fan well heater and quits work, alarm release.
Principle of work of the present invention is roughly: timing microprocessor reads temperature detection load module temperature value, by the operating state signal of the temperature regulating devices such as digital quantity input module input heating, samming, ventilation, and manual manipulation on off state; The temperature data collected, after data calibration, is together sent to ultra-wide temperature LCD with status information and shows, and after additional period mark, is stored in order in the cyclic store of microprocessor, uses in order to when query statistic, bug check; Meanwhile, be sent to supervisory system by appointment data format protocol by network interface, make Surveillance center personnel can grasp electric equipment operation situation in time; Microprocessor, according to manual manipulation switch (being completed by software design patterns) state, selects manual mode or normal mode.When manual mode runs, microprocessor only completes data monitoring, display, stores and upload; When normal mode runs, microprocessor continues treatment temperature data and status information, extracts maximum temperature, minimum temperature, maximum temperature difference, medial temperature, calculates the rate of temperature change (absolute value of temperature change value per minute) of each monitoring point; When maximum temperature >=startup ventilation temperature is arranged, start ventilation unit; When maximum temperature >=high temperature alarm temperature is arranged, start ventilation unit, and export high temperature alarm signal simultaneously; When maximum temperature < high temperature alarm temperature is arranged, remove high temperature alarm signal; When maximum temperature < closedown ventilation temperature is arranged, time-delay closing ventilation unit; When minimum temperature≤startup heating-up temperature is arranged, start heating arrangement; When minimum temperature≤low-temperature warning temperature is arranged, start heating arrangement, and export low-temperature warning signal simultaneously; When minimum temperature > low-temperature warning temperature is arranged, remove low-temperature warning signal; When minimum temperature > closedown heating-up temperature is arranged, time-delay closing heating arrangement; When maximum temperature difference >=startup samming temperature is arranged, start temperature equalization system; When maximum temperature difference >=temperature difference alarm temperature is arranged, start temperature equalization system, and export temperature difference alerting signal simultaneously; When maximum temperature difference < temperature difference alarm temperature is arranged, remove temperature difference alerting signal; When maximum temperature difference < closedown samming temperature is arranged, time-delay closing temperature equalization system; When maximum temperature rate of change >=alternating temperature warning is arranged, export alternating temperature alerting signal; Otherwise, remove alternating temperature and report to the police.By monitoring medial temperature change time long, equipment operating environment temperature can be determined, according to the temperature height adjustment temperature regulating device time-delay closing time automatically, avoiding frequent start-stop.Temperature control is driven and reports to the police to export and all sent through isolation by digital output module.Each temperature settings can be checked by keyboard operation, revise.Circulated by above job step, finishing equipment runs multipoint temperature monitoring, and by real-time performance information remote transmitting.
The present inventor is high-voltage fence staff, throughout the year in high-voltage transforming field work.The Frequent Accidents that causes due to Low Temperature Problems of electrical equipment in recent years, problem mainly concentrates on SF6 breaker mechanism, and current operational power primary process air or hydraulic oil storage power, provide breaker operator power.These operating mechanism structures are all more complicated, require high to operational temperature conditions, must not lower than-10 DEG C, very easily cause that densitometer is malfunctioning, inner seal seepage, liquid gas pressure are short of power or pipeline condensation causes the faults such as not smooth under low temperature.
The present invention gathers the temperature information of electrical switchgear mechanism box house automatically, and upload in operating monitoring system of electric substation in real time, start electric heater in time for inside electric appliance each element minimum operating temperature condition, make it grasp device temperature information to operation maintenance personnel and alarm; When equipment working temperature minimum point is lower than setting value, send initiative alarming to supervisory system, make monitor staff grasp equipment working temperature and ancillary heating equipment duty, in time notice operation maintenance personnel maintenance ancillary heating equipment.The present invention is electric system to the necessary technology means under the situation of intelligent, unattended development, operation maintenance personnel can be assisted to monitor temperature in time, timely maintenance abnormality equipment, ensure power network safety operation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention,
Fig. 2 is electrical appliance part structural representation of the present invention.
In figure: 1-monitoring temperature adjusting apparatus, 2-temp probe, 3-electric heater, 4-temperature detection load module, 5-microprocessor, 6-ultra-wide temperature LCD, 7-input keyboard, 8-network interface, 9-Isolation input module, 10-isolation and amplifier module, 11-number connect test module, 12-electric heater interface, 13-working power switch, 14-temp probe interface, 15-housing.
Embodiment
As shown in Figures 1 and 2: a kind of electrical switchgear mechanism internal temperature monitoring regulating device; Comprise electric heater 3, temp probe 2; Also comprise monitoring temperature adjusting apparatus 1, monitoring temperature adjusting apparatus 1 comprises temperature detection load module 4, Isolation input module 9, isolation and amplifier module 10, number connect test module 11, microprocessor 5, ultra-wide temperature LCD 6, input keyboard 7; Temp probe 2 is connected with temperature detection load module 4, Isolation input module 9, isolation and amplifier module 10 are connected with number connect test module 11, temperature detection load module 4, number connect test module 11, ultra-wide temperature LCD 6, input keyboard 7 are all connected with microprocessor 5, and isolation and amplifier module 10 is connected with electric heater 3; Microprocessor 5 is connected to monitoring system of electric substation by network interface 8.
Monitoring temperature adjusting apparatus 1 also comprises housing 15, and ultra-wide temperature LCD 6, input keyboard 7, network interface 8 are located at housing 15, and housing 15 is also provided with electric heater interface 12, temp probe interface 14 and working power switch 13; Monitoring temperature adjusting apparatus provides 220V ac working power supply by outside.
Electric heater 3 adopts blower fan well heater, it is direct outsourcing finished product, this general Weir HGM050-1200W blower fan well heater, alternating current 220V working power, air flowing 45m2/h, the advantage such as have that PTC constant temp. warming, the flames of anger, thermal conversion rate are high, good operating stability, life-span are long, carries super temperature protection function, safe and reliable to operation, fix guide rails assembling convenient; The PTC fan heating module that blower fan well heater is provided with, forces inner air circulating device to strengthen ancillary heating equipment effect, guarantees that corner equipment obtains temperature and supplements.
Temp probe 2 is at least two, and temp probe interface 14 is multiple, and temp probe 2 shown in the present embodiment Fig. 1 is two, and temp probe interface 14 is four; Temp probe 2 adopts thermocouple temperature probe, need by electrical equipment monitoring, be arranged on the multiple different monitoring points of inside electric appliance respectively, each significant points temperature of multi-way detecting, reliable wired connection, accurately measures collection to the temperature data of internal unit.
Temperature detection load module 4 selects LM95701 numeric type temperature survey chip, and operating temperature range-40 ~+150 DEG C, is transferred to microprocessor for the temperature information obtaining multiple measurement point.
Isolation input module 9 is 8 tunnels, Phototube Coupling; For detecting external device status, and during manual-operated emergent operation force start/stopping heat, samming, the temperature controlling instruments switch etc. such as ventilation.
Isolation and amplifier module 10 is 8 tunnels, and optical relay is isolated; Running for driving the temperature control devices such as heating, samming, ventilation, exporting running status and alerting signal instruction etc.
Microprocessor 5 is 32 monolithic systems, completes temperature and state-detection input; Process according to control overflow, control temperature controlling instruments and run, and confirm running status; Measurement data and running status record, display, send Surveillance center by RJ45 network interface on request.
Ultra-wide temperature LCD 6 selects HGS256641, and working temperature-30 ~+60 DEG C, can show 256*64 dot matrix, for showing the current operating state such as detected temperatures, temperature changing trend, set temperature warning value, equipment operation of each point.
The man-machine conversation of input keyboard 7 internal processes arranges keyboard, for field adjustable, checks measurement data, arranges operational mode, arranges warning and controling parameters etc.
Network interface 8 selects RJ45 interface, 10M/100M, RS232; For accessing monitoring system of electric substation data network, realize uploading, by meeting the Ethernet interface of IEC61850 information access specification of temperature data and alert data.
Electric heater interface 12, controls startup and the stopping of external heating and circulation device for air, controls, realize convection current and the heating compensation of device interior air according to design temperature to the automatic startup of firing equipment and stopping.
Claims (4)
1. an electrical switchgear mechanism internal temperature monitoring regulating device, comprises electric heater, temp probe; It is characterized in that: also comprise monitoring temperature adjusting apparatus (1), monitoring temperature adjusting apparatus (1) comprises temperature detection load module (4), Isolation input module (9), isolation and amplifier module (10), number connect test module (11), microprocessor (5), ultra-wide temperature LCD (6) and input keyboard (7); Temp probe (2) is connected with temperature detection load module (4), Isolation input module (9), isolation and amplifier module (10) are connected with number connect test module (11), temperature detection load module (4), number connect test module (11), ultra-wide temperature LCD (6), input keyboard (7) are all connected with microprocessor (5), and isolation and amplifier module (10) is connected with electric heater (3); Microprocessor (5) is connected to monitoring system of electric substation by network interface (8).
2. a kind of electrical switchgear mechanism internal temperature monitoring regulating device as claimed in claim 1, it is characterized in that: monitoring temperature adjusting apparatus (1) also comprises housing (15), ultra-wide temperature LCD (6), input keyboard (7), network interface (8) are located at housing (15), and housing (15) is also provided with electric heater interface (12), temp probe interface (14) and working power switch (13).
3. a kind of electrical switchgear mechanism internal temperature monitoring regulating device as claimed in claim 1 or 2, is characterized in that: temp probe (2) is at least two.
4. a kind of electrical switchgear mechanism internal temperature monitoring regulating device as claimed in claim 3, is characterized in that: electric heater (3) is blower fan well heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410547639.1A CN104298276A (en) | 2014-10-16 | 2014-10-16 | Internal temperature monitoring device of electrical equipment mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410547639.1A CN104298276A (en) | 2014-10-16 | 2014-10-16 | Internal temperature monitoring device of electrical equipment mechanism |
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| CN104298276A true CN104298276A (en) | 2015-01-21 |
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| CN201410547639.1A Pending CN104298276A (en) | 2014-10-16 | 2014-10-16 | Internal temperature monitoring device of electrical equipment mechanism |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104932571A (en) * | 2015-04-07 | 2015-09-23 | 国家电网公司 | Intelligent temperature adjusting system and application thereof |
| CN105868831A (en) * | 2016-03-28 | 2016-08-17 | 成都振中电气有限公司 | System for automatic maintenance of electrical device |
| CN105927853A (en) * | 2016-04-29 | 2016-09-07 | 国家电网公司 | Portable type SF6 gas cylinder heating system |
| CN106644826A (en) * | 2016-12-13 | 2017-05-10 | 国网电力科学研究院武汉南瑞有限责任公司 | Device for monitoring micro-water density of SF6 on line |
| CN110083185A (en) * | 2019-04-30 | 2019-08-02 | 广东美的厨房电器制造有限公司 | Temprature control method and cooking appliance |
| CN112649121A (en) * | 2020-12-23 | 2021-04-13 | 苏州新标检测技术有限公司 | Working temperature detection method for 5G radio frequency equipment |
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| US5428553A (en) * | 1989-02-22 | 1995-06-27 | Hitachi, Ltd. | Digital control and protection equipment for power system |
| CN202720523U (en) * | 2012-04-28 | 2013-02-06 | 山西省电力公司大同供电分公司 | Switch cabinet temperature monitoring apparatus |
| CN103746296A (en) * | 2013-09-10 | 2014-04-23 | 珠海瑞捷电气有限公司 | Intelligent microprocessor protection device with operation status display, wireless temperature measurement and communication protocol automatic switching functions |
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2014
- 2014-10-16 CN CN201410547639.1A patent/CN104298276A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5428553A (en) * | 1989-02-22 | 1995-06-27 | Hitachi, Ltd. | Digital control and protection equipment for power system |
| CN202720523U (en) * | 2012-04-28 | 2013-02-06 | 山西省电力公司大同供电分公司 | Switch cabinet temperature monitoring apparatus |
| CN103746296A (en) * | 2013-09-10 | 2014-04-23 | 珠海瑞捷电气有限公司 | Intelligent microprocessor protection device with operation status display, wireless temperature measurement and communication protocol automatic switching functions |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104932571A (en) * | 2015-04-07 | 2015-09-23 | 国家电网公司 | Intelligent temperature adjusting system and application thereof |
| CN105868831A (en) * | 2016-03-28 | 2016-08-17 | 成都振中电气有限公司 | System for automatic maintenance of electrical device |
| CN105927853A (en) * | 2016-04-29 | 2016-09-07 | 国家电网公司 | Portable type SF6 gas cylinder heating system |
| CN106644826A (en) * | 2016-12-13 | 2017-05-10 | 国网电力科学研究院武汉南瑞有限责任公司 | Device for monitoring micro-water density of SF6 on line |
| CN110083185A (en) * | 2019-04-30 | 2019-08-02 | 广东美的厨房电器制造有限公司 | Temprature control method and cooking appliance |
| CN112649121A (en) * | 2020-12-23 | 2021-04-13 | 苏州新标检测技术有限公司 | Working temperature detection method for 5G radio frequency equipment |
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Application publication date: 20150121 |