CN202994987U - Insulating property on-line monitoring device of sulfur hexafluoride gas insulated switch - Google Patents
Insulating property on-line monitoring device of sulfur hexafluoride gas insulated switch Download PDFInfo
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- CN202994987U CN202994987U CN 201220683536 CN201220683536U CN202994987U CN 202994987 U CN202994987 U CN 202994987U CN 201220683536 CN201220683536 CN 201220683536 CN 201220683536 U CN201220683536 U CN 201220683536U CN 202994987 U CN202994987 U CN 202994987U
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- sulfur hexafluoride
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Abstract
The utility model discloses an insulating property on-line monitoring device of a sulfur hexafluoride gas insulated switch. The insulating property on-line monitoring device of the sulfur hexafluoride gas insulated switch comprises a sensor module, a processing module, a man-machine operation module and a power supply module, wherein the output end of the sensor module is connected with the processing module, the man-machine operation module is connected with the processing module, and the power supply module supplies power to the above modules. According to the utility model, the sensor modules real-timely detects the content of a SF6 gas, and based on the content of a SF6 gas, the processing module can determine whether the insulating property of a switch box body is good or not, and when the insulating property drops, can timely alarm operation personnel to examine and repair a fault device timely and conveniently, so that the reliability and security of the SF6 gas insulated switch device can be improved greatly, and accordingly, the stability of a power grid is improved. The overall monitoring effect of the insulating property on-line monitoring device of the sulfur hexafluoride gas insulated switch has the advantages of high precision and measureable concentration, wide temperature and short response time, and the insulating property on-line monitoring device of the sulfur hexafluoride gas insulated switch is low in manufacture cost and can work for a long time.
Description
Technical field
The utility model relates to the monitoring technology of gas-insulated switch, is specifically related to a kind of insulating property on-Line Monitor Device of sulfur hexafluoride gas-insulating switch.
Background technology
Development, progress along with the social production life, the raising of people's quality of life, stability to operation of power networks has had higher requirement, this is also just impelling electric power unit of operation need to more pay attention to the health status of power equipment, particularly sturdy power grid and intelligent grid construction are carried out in China by the state company of netting, and first and second equipment on-line state-detection and intelligent O﹠M were brought into schedule already.Present China 10kV field of switches, SF
6Gas-insulated vacuum extinction switch is to use largest a kind of 10kV power distribution network switchgear, and their safe operation is directly connected to the safety of whole network system, reliability service.SF
6Gas-insulated vacuum extinction switch is the SF that atmospheric pressure 100% concentration such as is full of in construction of switch structure casing
6Gas, SF
6Gas is as switch inside disconnecting link connected system, actuator system insulating medium.In case switch is in running status, SF
6Insulating gas is revealed will cause whole switch casing decreasing insulating, jeopardize the normal use of switch internal components and O﹠M personnel's personal safety.Therefore, research and development are a kind of based on 10kV SF
6The insulating property on-Line Monitor Device of gas-insulated switch realizes the inner SF6 gas-insulated of Real-Time Monitoring switch situation, during decreasing insulating, and alarm, notice O﹠M personnel carry out repair based on condition of component, will improve greatly 10kV SF
6Gas-insulated switch reliability of operation and security.
Present 10kV power distribution network field of switches, SF
6Gas-insulated performance on-line monitoring application of installation is less.A kind of SF that exists on market
6Gas-insulated performance on-line monitoring device is mainly used in the indoor switch of 10kV, after detecting Leakage Gas, by the low concentration SF that contains in detector switch casing outer air
6Gas content is realized the gas-insulated Performance Detection indirectly.Its detection method is subjected to the such environmental effects such as switch cubicle outer air flow expansion, temperature characterisitic larger, and reliability is lower, fails to promote always.Present SF
6Gas concentration detection method mainly contains three kinds of infra-red sepectrometries, supercritical ultrasonics technology, electrochemical process, and three kinds of methods all are not suitable for 10kV SF
6The insulating property on-line monitoring of gas-insulated switch.Three kinds of method performance comparison are as follows:
(1) infra-red sepectrometry: utilize SF
6The concrete strong absorption characteristic of infrared light to specific wavelength of gas provides light source by laser or common infrared light supply, and the air chamber that gas flow is excessively special is by detecting the size judgement SF of spectral absorption
6The size of the concentration of gas.Advantage: the low concentration measurement has good precision.Shortcoming: volume is large, and the LASER Light Source power consumption is large, and cost is high, is fit to low concentration and measures, and is existing shorter serviceable life for the insulated switching installation light source of need long-term work, is not suitable for the measurement of concetration of this kind equipment.
(2) supercritical ultrasonics technology: utilize ultrasound wave at air and SF
6The upper propagation speed difference of gas, ultrasound wave passes through SF simultaneously
6After air, by detecting ultrasound wave propagation delay size indirect detection SF in two kinds of varying environments
6Gas concentration.Advantage: the low concentration measurement has good precision.Shortcoming: volume is large, and cost is high, is subjected to ambient humidity, humidity, and pressure influence is larger, is not suitable for high concentration and measures, and be not suitable for being applied to vibration environment.
(3) electrochemical process: the principle of electrochemical techniques is catalyst surfaces that detected gas touches 200 ° of C left and right high temperature, and corresponding chemical reaction occurs with it, thereby produces the change of electric signal, finds detected gas with this.Advantage: its cost of electrochemical techniques is low, the life-span is long, simple in structure, characteristics that can continuous working.Shortcoming: accuracy of detection is low, and stability is bad, is not suitable for SF
6The insulating property of gas-insulated switchgear detect.
In sum, research and development are a kind of by direct-detection switch box house high concentration SF
6Gas content, and be applicable to the low-cost 10kV SF that outdoor environment uses
6The insulating property on-Line Monitor Device of gas-insulated switch is a kind of new technical need, possesses higher using value.
Summary of the invention
To achieve these goals, the utility model provides a kind of on-Line Monitor Device, and it is by the SF in the detector switch casing
6Gas content is realized the detection to the switch insulating property, has advantages of that precision is high, the reaction time is short, long service life.
The utility model is that the technical scheme that its technical matters of solution adopts is:
The insulating property on-Line Monitor Device of sulfur hexafluoride gas-insulating switch comprises: the interior sensor assembly for detection of concentration of sulfur hexafluoride of sulfur hexafluoride air cell that is arranged on the switch casing; Be arranged on the switch casing and be positioned at the outer processing module of sulfur hexafluoride air cell, the output terminal of sensor assembly is connected with processing module; Be arranged on the switch casing and be positioned at the outer human-machine operation module of sulfur hexafluoride air cell, the human-machine operation module is connected with processing module; Be used for the power module to above-mentioned module for power supply.
In preferred scheme, device also comprises: for the communication module of communicating by letter with outer remote, communication module is connected with processing module.
In preferred scheme, the back-up source unit that power module comprises switch unit and external primary power unit, is comprised of battery, be connected output terminal and be connected with the input end of switch unit respectively in the primary power unit with the back-up source unit, the output terminal of switch unit is as the output terminal of power module.
In preferred scheme, described sensor assembly comprises thermal conductance probe and signal conditioning circuit, and the output terminal of thermal conductance probe is connected with the input end of signal conditioning circuit, and the output terminal of signal conditioning circuit is connected with processing module.
In preferred scheme, transmit shielded conductor by signal between sensor assembly and processing module and connect.Device comprises the aviation plug on the sidewall that is arranged on sulfur hexafluoride air cell, and described signal transmission shielded conductor passes aviation plug sensor assembly is connected with processing module.
The beneficial effects of the utility model are: the utility model is at the SF of switch casing
6Sensor assembly is set in air chamber, utilizes this module to SF
6Gas content detects in real time, and processing module is based on SF
6The content of gas can judge the quality of switch casing insulating property, when decreasing insulating, in time alarm, is convenient to the O﹠M personnel faulty equipment is in time overhauled, and will greatly improve SF
6The reliability and safety of gas-insulated switchgear makes moderate progress the stability of electrical network; The whole monitoring effect of device has advantages of high precision, wide temperature, can survey that concentration is high, the reaction time is short, and its cost of manufacture is low, and can work long hours.
Description of drawings
Be further detailed below in conjunction with the drawings and specific embodiments:
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the scheme of installation of a kind of embodiment of the utility model.
Embodiment
With reference to Fig. 1, insulating property on-line measuring device of the present utility model comprises sensor assembly 1, processing module 2, human-machine operation module 3, power module 4 and communication module 5 etc.Sensor assembly 1 is arranged on SF
6In air chamber.During work, sensor assembly 1 detects SF
6The content of gas, the content data that detection obtains is sent in processing module 2 to be processed.Processing module 2 is according to SF
6The present SF of gas content judgement
6The quality of air chamber insulating property, and related data is presented on human-machine operation module 3, also corresponding remote data can be carried out remote transmission by communication module 5.Operating personnel utilize human-machine operation module 3 to arrange the partial parameters that installs easily.Outstanding advantage of this device is to SF
6SF in gas-insulated switch
6When gas detected, switch can normally move, and having overcome pick-up unit in the past needs switch out of service when the detectable concentration value, has reached SF
6Real-time and reliability that gas-insulated switchgear detects.
The below is described in detail each ingredient of the present utility model.
Human-machine operation module 3 is arranged on the switch casing and is positioned at outside sulfur hexafluoride air cell, and human-machine operation module 3 is connected with processing module 2.Man machine operation interface comprises two parts: display module, button operation module.Faceplate part is provided with communication, power supply, operation, alarm lamp, the duty that the system that can be clearly seen that is real-time.Designed in addition key circuit, can be so that local operation be provided with the related parameter value.Design has been considered on the spot to read problem with the data of distant place transformer station, therefore distant place change-over switch is on the spot arranged in system, can observe SF by Liquid Crystal Module on the spot the time
6Whether the insulating property in Switch main body meet the requirements, and use the OLED LCDs to have wider temperature range, at most of SF
6The occasion that equipment is installed all can be used.Show with LCD and compare, OLED has plurality of advantages: because OLED itself can be luminous, need not backlight, therefore the OLED display screen can be done lighter and thinnerly, and visible angle is larger, and color is abundanter, and electric energy can significantly be saved, fast response time, sunlight visible.Overcome the shortcoming that general LCD screen can't be observed in the sun.The button operation module can be set some parameter values of device, is convenient to on-line maintenance on the spot, and isolated communication between key-press module and processor module has good interference free performance, environmental suitability.
Power module 4 power supplies.Power module 4 comprises switch unit 43 and external primary power unit 41, be comprised of battery back-up source unit 42, the output terminal of being connected with the back-up source unit in primary power unit 41 is connected with the input end of switch unit 43 respectively, and the output terminal of switch unit 43 is as the output terminal of power module 4.During concrete enforcement, primary power unit 41 can be the external direct current power supply of 24V, and 42 of back-up source unit adopt lithium battery.During use, primary power unit 41 can also be simultaneously powers to back-up source unit 42.Switch unit 43 can adopt analog switch or optocoupler, relay to realize.Device adopts the mode that above-mentioned dual power supply switches to power, can this device not carried out the setting in advance of parameter in the situation that circuit is switched on, and the power acquisition of the modules design of mutual isolation, prevent the phase mutual interference between power supply, to such an extent as to the Systems balanth performance is affected.
Communication module 5 is used for communicating by letter with outer remote, and communication module 5 is connected with processing module 2.Communication module 5 can adopt the RS232 isolated communication, when communicating by letter with the external world, adopts electric power 101/104 stipulations, can compatible performance preferably be arranged with power equipment.When being provided with line feed terminals FTU, then device also can feed back to FTU to the size of the concentration value that detects in real time by communication module 5 processes data, transmission, and make or main website makes corresponding reaction action, mention trouble-saving generation to reach.
With reference to Fig. 2, the part of sign 8 is SF
6Air chamber.For the stability of guarantee information transmission, guarantee that signal is not disturbed, transmit shielded conductor 6 by signal between sensor assembly 1 and processing module 2 and connect.In addition, in order to prevent SF
6The impermeability of air chamber is damaged, and the sidewall of sulfur hexafluoride air cell is provided with aviation plug 7, and described signal transmission shielded conductor 6 passes aviation plug 7 is connected sensor assembly 1 connection with processing module.
This device is subjected to the impact of environment less, and continuous working period is long, and precision is higher, and volume is little, this device sets the characteristics of the technology such as thermochemistry, thermal breakdown, ultrasound wave, have good monitoring effect.Use micro-signal detection technique and temperature compensation means, the method of taking analog filtering and digital filtering to combine, various types of noise have effectively been suppressed, precision and the sensitivity of systematic survey have been improved, realize the Measurement accuracy of high concentrations of gas, overcome the shortcoming that traditional SF6 gas concentration detects.Have highly sensitively, long-term work is reliable and stable, and is simple in structure, and volume is little, is applicable to the on-line monitoring of SF6 gas-insulated switchgear gas-insulated performance.
Embodiment of the present utility model is not restricted to the described embodiments, as long as it reaches technique effect of the present utility model with essentially identical means, all should belong to protection domain of the present utility model.
Claims (6)
1. the insulating property on-Line Monitor Device of sulfur hexafluoride gas-insulating switch is characterized in that comprising:
Be arranged on the interior sensor assembly (1) for detection of concentration of sulfur hexafluoride of sulfur hexafluoride air cell of switch casing;
Be arranged on the switch casing and be positioned at the outer processing module (2) of sulfur hexafluoride air cell, the output terminal of sensor assembly (1) is connected with processing module (2);
Be arranged on the switch casing and be positioned at the outer human-machine operation module (3) of sulfur hexafluoride air cell, human-machine operation module (3) is connected with processing module (2);
Be used for the power module (4) to above-mentioned module for power supply.
2. the insulating property on-Line Monitor Device of sulfur hexafluoride gas-insulating switch according to claim 1 characterized by further comprising: be used for the communication module (5) of communicating by letter with outer remote, communication module (5) is connected with processing module (2).
3. the insulating property on-Line Monitor Device of sulfur hexafluoride gas-insulating switch according to claim 1, it is characterized in that the back-up source unit (42) that power module (4) comprises switch unit (43) and external primary power unit (41), is comprised of battery, primary power unit (41) is connected 42 with the back-up source unit) output terminal be connected with the input end of switch unit (43) respectively, the output terminal of switch unit (43) is as the output terminal of power module (4).
4. the insulating property on-Line Monitor Device of sulfur hexafluoride gas-insulating switch according to claim 1, it is characterized in that described sensor assembly (1) comprises thermal conductance probe (11) and signal conditioning circuit (12), the output terminal of thermal conductance probe (11) is connected with the input end of signal conditioning circuit (12), and the output terminal of signal conditioning circuit (12) is connected with processing module (2).
5. the insulating property on-Line Monitor Device of sulfur hexafluoride gas-insulating switch according to claim 1, is characterized in that transmitting shielded conductor (6) by signal between sensor assembly (1) and processing module (2) connects.
6. the insulating property on-Line Monitor Device of sulfur hexafluoride gas-insulating switch according to claim 5, it is characterized in that comprising the aviation plug (7) on the sidewall that is arranged on sulfur hexafluoride air cell, described signal transmission shielded conductor (6) passes aviation plug (7) is connected 2 with sensor assembly (1) with processing module) connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220683536 CN202994987U (en) | 2012-12-12 | 2012-12-12 | Insulating property on-line monitoring device of sulfur hexafluoride gas insulated switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220683536 CN202994987U (en) | 2012-12-12 | 2012-12-12 | Insulating property on-line monitoring device of sulfur hexafluoride gas insulated switch |
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| CN202994987U true CN202994987U (en) | 2013-06-12 |
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| CN 201220683536 Expired - Fee Related CN202994987U (en) | 2012-12-12 | 2012-12-12 | Insulating property on-line monitoring device of sulfur hexafluoride gas insulated switch |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323757A (en) * | 2013-06-21 | 2013-09-25 | 国家电网公司 | Power distribution cabinet gas insulation intensity prediction device and method |
| CN103323225A (en) * | 2013-06-21 | 2013-09-25 | 国家电网公司 | Gas insulation power distribution cabinet mechanical strength prediction device and method |
| CN103336200A (en) * | 2013-06-21 | 2013-10-02 | 国家电网公司 | Device and method for predicting power distribution cabinet electric health index |
| CN103674248A (en) * | 2013-11-22 | 2014-03-26 | 深圳先进技术研究院 | Spectral data acquisition and transmission system and operating and application methods thereof |
| CN104568323A (en) * | 2014-06-25 | 2015-04-29 | 贵州电力试验研究院 | SF6 gas leakage on-line monitoring and alarming system |
| CN105004489A (en) * | 2014-04-18 | 2015-10-28 | 现代重工业株式会社 | Gas insulated switchgear preventive diagnostic system and gas pressure monitoring method thereof |
| CN105319236A (en) * | 2015-07-28 | 2016-02-10 | 国家电网公司 | Detector used for sulfur hexafluoride gas in outdoor looped network unit and detection method thereof |
| CN112098829A (en) * | 2020-09-11 | 2020-12-18 | 江苏大烨智能电气股份有限公司 | FTU-based terminal and method for monitoring service life of power distribution switch |
| CN113899860A (en) * | 2021-10-12 | 2022-01-07 | 广东电网有限责任公司电力科学研究院 | Environment-friendly gas insulated transformer is with insulating gaseous mixture on-line monitoring device |
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- 2012-12-12 CN CN 201220683536 patent/CN202994987U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103323757B (en) * | 2013-06-21 | 2015-05-27 | 国家电网公司 | Power distribution cabinet gas insulation intensity prediction device and method |
| CN103323225A (en) * | 2013-06-21 | 2013-09-25 | 国家电网公司 | Gas insulation power distribution cabinet mechanical strength prediction device and method |
| CN103336200A (en) * | 2013-06-21 | 2013-10-02 | 国家电网公司 | Device and method for predicting power distribution cabinet electric health index |
| CN103323757A (en) * | 2013-06-21 | 2013-09-25 | 国家电网公司 | Power distribution cabinet gas insulation intensity prediction device and method |
| CN103336200B (en) * | 2013-06-21 | 2015-07-08 | 国家电网公司 | Device and method for predicting power distribution cabinet electric health index |
| CN103323225B (en) * | 2013-06-21 | 2015-05-27 | 国家电网公司 | Gas insulation power distribution cabinet mechanical strength prediction method |
| CN103674248A (en) * | 2013-11-22 | 2014-03-26 | 深圳先进技术研究院 | Spectral data acquisition and transmission system and operating and application methods thereof |
| CN105004489A (en) * | 2014-04-18 | 2015-10-28 | 现代重工业株式会社 | Gas insulated switchgear preventive diagnostic system and gas pressure monitoring method thereof |
| CN104568323A (en) * | 2014-06-25 | 2015-04-29 | 贵州电力试验研究院 | SF6 gas leakage on-line monitoring and alarming system |
| CN104568323B (en) * | 2014-06-25 | 2017-10-31 | 贵州电力试验研究院 | A kind of SF6Gas leaks online monitoring alarm system |
| CN105319236A (en) * | 2015-07-28 | 2016-02-10 | 国家电网公司 | Detector used for sulfur hexafluoride gas in outdoor looped network unit and detection method thereof |
| CN112098829A (en) * | 2020-09-11 | 2020-12-18 | 江苏大烨智能电气股份有限公司 | FTU-based terminal and method for monitoring service life of power distribution switch |
| CN113899860A (en) * | 2021-10-12 | 2022-01-07 | 广东电网有限责任公司电力科学研究院 | Environment-friendly gas insulated transformer is with insulating gaseous mixture on-line monitoring device |
| CN113899860B (en) * | 2021-10-12 | 2023-05-23 | 广东电网有限责任公司电力科学研究院 | Insulation mixed gas on-line monitoring device for environment-friendly gas insulation transformer |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20181212 |