CN109725215A - Substation capacitors group Working Status Monitoring early warning system - Google Patents
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- CN109725215A CN109725215A CN201811548132.2A CN201811548132A CN109725215A CN 109725215 A CN109725215 A CN 109725215A CN 201811548132 A CN201811548132 A CN 201811548132A CN 109725215 A CN109725215 A CN 109725215A
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Abstract
Substation capacitors group Working Status Monitoring early warning system of the present invention belongs to substation capacitors group Working Status Monitoring early warning technology field；Technical problem to be solved are as follows: a kind of substation capacitors group Working Status Monitoring early warning system is provided；Solve the technical solution of technical problem use are as follows: including capacitor bank supervisor device, the capacitor bank supervisor device is internally provided with central controller, and the central controller is connected with camera, sound and light alarm module, data memory module, power module respectively by conducting wire；The central controller is also connected with wireless communication module；The wireless communication module is connect with wireless temperature measure module, monitor terminal, monitoring center computer radio respectively by wireless network；The present invention is applied to the place of monitoring substation capacitors group.
Description
Technical field
Substation capacitors group Working Status Monitoring early warning system of the present invention belongs to substation capacitors group working condition prison
Control early warning technology field.
Background technique
High-voltage parallel capacitor (hereinafter referred to as capacitor) is a kind of current most commonly used reactive power compensation device；Closely
Nian Lai, with the high speed development of power grid, domestic electrical Power capacitor industry in dielectric material, design and manufacture in technological level and have
Great progress, capacitor and its reactive compensation complete device investment operation of power networks are more and more, and operational reliability has larger
Raising, the year failure rate of capacitor constantly declining；Operating experience shows that system voltage increases, and cut-offs capacitor group and causes
Overvoltage, overcurrent caused by higher hamonic wave, decompression caused by power supply disconnects, environment temperature abnormal operation work such as increases
Condition can cause the generation of capacitor accident；The common failure of power capacitor mainly includes leakage of oil, bulge, fuse blows
Deng phenomena such as while shunt capacitor breaks down Shi Douhui with electric discharge, shell leakage of oil, occurs, and can even occur when serious
Capacitor explosion, seriously threatens electric system and the safety of operations staff.
In substation capacitors group O&M inspection work, such as there is the loosening of capacitor terminal, if cannot be timely
It was found that simultaneously defect elimination processing, it will cause binding post to generate heat, and then capacitor internal is caused to generate heat, cause capacitor internal string Duan Rong
A series of generation for accidents such as explosion of having no progeny；Capacitor terminal loosens abnormal generation, will seriously threaten capacitor group
Safe operation, should reinforce increasing the maintenance times at capacitor terminal to the maintenance dynamics at capacitor terminal,
It scents a hidden danger in time, accident is avoided to spread.
But the quantity of the capacitor in substation is huger, fully relies on artificial progress examination and maintenance workload
To be very heavy, and will need to pay biggish manpower and material resources and relatively long repair time；And infrared detection and part is used to put
The special instruments such as electro-detection, the requirement to detection environment and apparatus operation method is also relatively high, and misoperation may cause artificially
Error, and infrared detection is easy to be influenced by sunlight, the influence of dust scattering, wind-force it is cooling influence, big aspiration
The influence of receipts, neighbouring radiator and the reflections affect of surface roughness etc.；Using the detection method for local discharge of pulse current method
It is affected by electromagnetic interference；Using ultrasound examination shelf depreciation, when capacitor internal using compact arranged oil-paper,
When the structure of impregnated thin film, the propagation that shelf depreciation generates sound wave will be affected, and detection effect error is larger.
Summary of the invention
The present invention is in order to overcome the deficiencies in the prior art, technical problem to be solved are as follows: provides a kind of power transformation
It stands capacitor group Working Status Monitoring early warning system；In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows: become
Power station capacitor group Working Status Monitoring early warning system, including capacitor bank supervisor device, in the capacitor bank supervisor device
Portion is provided with central controller, and the central controller stores mould with camera, sound and light alarm module, data respectively by conducting wire
Block, power module are connected；
The central controller is also connected with wireless communication module；
The wireless communication module by wireless network respectively with wireless temperature measure module, monitor terminal, monitoring center computer without
Line connection.
The wireless temperature measure module is arranged in substation capacitors group, and the signal input part of the wireless temperature measure module is set
It is equipped with induction magnetic core, the signal output end of the induction magnetic core is sequentially connected in series current-to-voltage converting circuit, overvoltage crowbar, steady
It is connected after volt circuit with temperature sampling processor, signal output end and the wireless radio frequency modules phase of the temperature sampling processor
Even.
The chip that the wireless communication module uses is communication chip U1, the circuit structure of the wireless communication module are as follows:
1 foot of the communication chip U1 is sequentially connected in series capacitor C1, is connected after crystal oscillator Y1, capacitor C3 with 28 feet of communication chip U1；
One end of the 2 foot shunt-wound capacitance C2 of the communication chip U1,7 feet of communication chip U1,11 feet of communication chip U1, communication
14 feet of chip U1 are connected behind one end of capacitor C9 with 3V input power, the other end ground connection of the capacitor C2, capacitor C9；
3 feet of the communication chip U1 are connected after being sequentially connected in series inductance L1, capacitor C4 with signal receiving antenna E1；
It is grounded after the 4 foot tandem electric inductance L2 of the communication chip U1；
5 feet of the communication chip U1 are simultaneously grounded after connecing 10 feet of communication chip U1,13 feet；
One end of the 6 foot shunt-wound capacitance C5 of the communication chip U1 is connected behind one end of inductance L3 with one end of capacitor C6, described
The other end of capacitor C6 and the other end for meeting inductance L3, one end of capacitor C7 are connected behind one end of capacitor C8 with 3V input power,
The other end of the capacitor C8 is grounded；
8 feet of the communication chip U1 are connected with the other end of capacitor C5；
9 feet of the communication chip U1 are connected with the other end of capacitor C7；
It is grounded after the 17 foot serial capacitance C10 of the communication chip U1；
One end of the 19 foot shunt-wound capacitance C13 of the communication chip U1 is connected behind one end of resistance R1 with one end of resistance R2；
It is connected after 20 feet of the communication chip U1 and the other end of connecting resistance R1 with one end of capacitor C11, the capacitor C11's
Other end ground connection；
It is grounded after the 21 foot serial capacitance C12 of the communication chip U1；
22 feet of the communication chip U1 are connected with the other end of capacitor C13；
It is connected after 23 feet of the communication chip U1 and the other end of connecting resistance R2 with one end of resistance R3；
24 feet of the communication chip U1 are connected with 5V input power；
It is connected after 25 feet of the communication chip U1 and the other end of connecting resistance R3 with the control terminal of central controller；
27 feet of the communication chip U1 are connected with the control terminal of central controller.
The model MAX1473 of the communication chip U1；
The control chip model that the wireless temperature measure module uses is TMS320C5509.
What the present invention had compared with the existing technology has the beneficial effect that the present invention overhauls practical feelings according to substation's O&M
Condition loosens abnormal problem for capacitor group connecting terminal, proposes a kind of reliable, economical and practical visualizing monitor early warning
Solution improves the safe operation management water of substation capacitors group by setting intelligent integral capacitor bank supervisor device
It is flat；Intelligent integral capacitor bank supervisor device provided by the invention is online in real time by carrying out to condenser terminal post temperature
Monitoring, while finding that capacitor terminal loosens defect in time using Video Supervision Technique, capacitor leakage of oil, drum are found in time
The potential faults such as tripe, electric discharge, can be effectively reduced intensity of workers, provide data foundation for Maintenance and Repair work；This
Invention, which can be done step-by-step, monitors early warning on-line to the visualization of the key equipments such as isolation switch in standing, it is ensured that power system security is steady
Fixed operation has very important realistic meaning.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawing:
Fig. 1 is electrical block diagram of the invention；
Fig. 2 is the circuit diagram of wireless communication module of the present invention；
In figure: 1 being capacitor bank supervisor device, 2 be central controller, 3 be camera, 4 be sound and light alarm module, 5 be data
Memory module, 6 be power module, 7 be wireless communication module, 8 be wireless temperature measure module, 9 be monitor terminal, 10 be monitoring center
Computer.
Specific embodiment
As depicted in figs. 1 and 2, substation capacitors group Working Status Monitoring early warning system of the present invention, including capacitor group
Monitoring device 1, the capacitor bank supervisor device 1 are internally provided with central controller 2, and the central controller 2 passes through conducting wire
It is connected respectively with camera 3, sound and light alarm module 4, data memory module 5, power module 6；
The central controller 2 is also connected with wireless communication module 7；
The wireless communication module 7 by wireless network respectively with wireless temperature measure module 8, monitor terminal 9, monitoring center computer
10 are wirelessly connected.
The wireless temperature measure module 8 is arranged in substation capacitors group, the signal input part of the wireless temperature measure module 8
Be provided with induction magnetic core, the signal output end of the induction magnetic core be sequentially connected in series current-to-voltage converting circuit, overvoltage crowbar,
It is connected after voltage regulator circuit with temperature sampling processor, signal output end and the wireless radio frequency modules phase of the temperature sampling processor
Even.
The chip that the wireless communication module 7 uses is communication chip U1, the circuit structure of the wireless communication module 7
Are as follows:
1 foot of the communication chip U1 is sequentially connected in series capacitor C1, is connected after crystal oscillator Y1, capacitor C3 with 28 feet of communication chip U1；
One end of the 2 foot shunt-wound capacitance C2 of the communication chip U1,7 feet of communication chip U1,11 feet of communication chip U1, communication
14 feet of chip U1 are connected behind one end of capacitor C9 with 3V input power, the other end ground connection of the capacitor C2, capacitor C9；
3 feet of the communication chip U1 are connected after being sequentially connected in series inductance L1, capacitor C4 with signal receiving antenna E1；
It is grounded after the 4 foot tandem electric inductance L2 of the communication chip U1；
5 feet of the communication chip U1 are simultaneously grounded after connecing 10 feet of communication chip U1,13 feet；
One end of the 6 foot shunt-wound capacitance C5 of the communication chip U1 is connected behind one end of inductance L3 with one end of capacitor C6, described
The other end of capacitor C6 and the other end for meeting inductance L3, one end of capacitor C7 are connected behind one end of capacitor C8 with 3V input power,
The other end of the capacitor C8 is grounded；
8 feet of the communication chip U1 are connected with the other end of capacitor C5；
9 feet of the communication chip U1 are connected with the other end of capacitor C7；
It is grounded after the 17 foot serial capacitance C10 of the communication chip U1；
One end of the 19 foot shunt-wound capacitance C13 of the communication chip U1 is connected behind one end of resistance R1 with one end of resistance R2；
It is connected after 20 feet of the communication chip U1 and the other end of connecting resistance R1 with one end of capacitor C11, the capacitor C11's
Other end ground connection；
It is grounded after the 21 foot serial capacitance C12 of the communication chip U1；
22 feet of the communication chip U1 are connected with the other end of capacitor C13；
It is connected after 23 feet of the communication chip U1 and the other end of connecting resistance R2 with one end of resistance R3；
24 feet of the communication chip U1 are connected with 5V input power；
It is connected after 25 feet of the communication chip U1 and the other end of connecting resistance R3 with the control terminal of central controller 2；
27 feet of the communication chip U1 are connected with the control terminal of central controller 2.
The model MAX1473 of the communication chip U1；
The control chip model that the wireless temperature measure module 8 uses is TMS320C5509.
Capacitor group connecting terminal thermometric, visualization prison are clapped camera, wireless communication unit and data and acquired by the present invention
Processing unit is highly integrated, is that the integrated capacitor device based on the monitoring of capacitor group monitors intelligent early-warning system on-line；
The present invention passes through the video image of video acquisition module automatic collection capacitor terminal, can find capacitor in time
Connecting terminal loosens defect, prevents equipment damage accident from occurring；And pass through the fortune of wireless temperature measure module measuring capacitance in real time device group
Trip temperature；
To guarantee safe operation of electric network, work is important to the temperature detection of high-voltage parallel capacitor；
Capacitor temperature detection at present by the way of infrared inspection, must mainly be kept away with the method for the point-by-point thermometric of infrared radiation thermometer
The background interference of sunlight is opened, generally need to be at night or rainy days to field measurement, measurement error is larger, and needs a large amount of people
Power material resources；And this detection method also can only periodically patrol survey, and the period is longer, and the probability to break down by missing inspection is very big；
Temperature measurement on-line device provided by the invention is specially wireless temperature measure module, and real-time online temp sensing function may be implemented, can be effective
Mitigate the workload of current inspection, improves equipment reliability of operation.
The wireless temperature measure module is specially the temperature measuring equipment based on surface acoustic wave techniques, and surface acoustic wave sensor is based on nothing
Source mode detects, and without power supply, is communicated between collector antenna using frequency electromagnetic waves, has electrical isolation feature,
High reliablity, the surface acoustic wave sensor used can flexibly be mounted on high-tension apparatus measured point, not limited by application environment.
Capacitor bank supervisor device provided by the invention can monitoring capacitor connecting terminal temperature, meet measurement number
Change, the requirement of outputting standard, communication networkization, have self-test, self-recovering function；Temperature is carried out using passive sensing technology to adopt
Collection, has the function of good anti-electromagnetic interference capability, closing, lightning protection, rain-proof, dust-proof etc..
Sensor sheet wave technology applies the physical characteristic of crystalline material, and the change of the physical characteristic of crystal passes through piezoelectricity
Principle of induction is converted into electric signal automatically, sensor operating principles be by the surface of emission of radio frequency signals to piezoelectric material,
Then the back wave affected by temperature is gone back into electric signal again and obtains temperature data；The largest benefit of Surface wave technology is
The passive working principle of sensor is utilized, (high voltage, high current) realizes wireless temperature number under unconventional running environment
According to acquisition.
The passive sensor is the temperature element for being directly installed on testee surface, it is responsible for receiving temperature monitoring end
What end issued seeks radiofrequency signal, and returns to the radiofrequency signal with temperature information and handle monitoring unit to thermometric synthetical collection；This
The passive sensor used is invented using surface acoustic wave techniques, the passive monitoring of temperature data is realized, is driven without battery.
The wireless temperature measure module monitors terminal and is responsible for circulation transmitting RF pulse signal, pass through control in transmit cycle
The frequency values for changing signal make system realize resonant excitation；The period is being received, the transducing signal that sensor returns is monitored terminal
It receives, completes amplification, down coversion, filtering, and be converted into digital signal, the final realization sub- temperature parameter of capacitor terminal
Detection.
The early warning rule that the central controller is issued according to preset or main website generates warning information and by wireless communication
Module is sent；The frequency acquisition of temperature collecting cell is adjusted according to the actual conditions of temperature.
The wireless communication module is acquired and is transmitted by 470MHz micro power radio communication network implementations data, is supported double
It is multiplexed to measuring and control data, built-in wireless network communication control protocol and ICP/IP protocol；Two-way digital quantity input/output is supported
The triggering of external switch amount.
When specific installation, the wireless temperature measure module can integrate to supervise in visualization and clap on device, be responsible for unified to specified
The functions such as the temperature and image data of capacitor group connecting terminal temperature measuring point converged, stored, Master station access protocol conversion.
The central controller is responsible for communicating with one group of sensor, and transmitting thermometric inquires after radiofrequency signal to wireless temperature measure module
Sensor, the return signal of receiving sensor, and it is parsed into the Master Station Software system that temperature information sends back monitoring center computer
System realizes remote online monitoring temperature, analysis and early warning.
The present invention has following major functions and features: capacitor group visualizes on-Line Monitor Device and supports to access multiple wiring
Terminal temperature measurement module, and temperature information can accurately be reached background system；Monitoring device supports manual, automatic collection scene to shine
Piece；Monitoring device main-machine communication mode should meet telecommunications, connection, mobile network adaptively require, and support 3G, 4G net of operator
Network, and installation operator can be selected according to field network situation；Using IP66 degree of protection, the normal work of outdoor environment is adapted to
Make, 5,000,000 pixel camera heads, battery and solar panel cooperate, and 24 hours response main websites are ensured while environmentally friendly
Platform command meets equipment operation standard and specification.
To improve monitoring efficiency, it is soft installation intelligent early-warning monitor client can be set in monitor terminal and monitoring computer
Part allows substation maintenance work personnel to install mating client software on mobile phone or computer, passes through Internet network
Viewing carried out to front end integration monitoring device with 3G network and control such as is taken pictures at the operation, accomplishes whenever and wherever possible to transport capacitor group
The inspection and monitoring of market condition；Monitoring center can manage the equipment such as platform software, server by comprehensive analysis and transmit to front end
Picture, video, the temperature data come, which is managed, stores, analyzing, show etc., to be operated；System need to support access substation auxiliary
System integration monitoring platform.
The present invention has a following function: supporting real-time reception and checks that prison claps device master camera photo and temperature measurement data
Function；Have active remote control prison and claps device camera function；Have history picture, temperature measurement data inquiry look facility；Have
The function of temperature measurement data classification alarm, and alarm threshold can be freely set；Should have cell phone application client software, can look into real time
It sees picture and monitoring data, and has active control visualization prison and clap the function that device is taken pictures.
Functional integration of the present invention is high, it by connecting terminal thermometric synthetical collection processing unit, visualization prison clap camera,
Power supply unit, wireless communication unit are highly integrated, and economical and practical monitoring is provided for substation capacitors real time on-line monitoring
Means.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (4)
1. substation capacitors group Working Status Monitoring early warning system, it is characterised in that: including capacitor bank supervisor device (1),
The capacitor bank supervisor device (1) is internally provided with central controller (2), and the central controller (2) is distinguished by conducting wire
It is connected with camera (3), sound and light alarm module (4), data memory module (5), power module (6)；
The central controller (2) is also connected with wireless communication module (7)；
The wireless communication module (7) by wireless network respectively with wireless temperature measure module (8), monitor terminal (9), monitoring center
Computer (10) is wirelessly connected.
2. substation capacitors group Working Status Monitoring early warning system according to claim 1, it is characterised in that: the nothing
Line temperature measurement module (8) is arranged in substation capacitors group, and the signal input part of the wireless temperature measure module (8) is provided with induction
Magnetic core, after the signal output end of the induction magnetic core is sequentially connected in series current-to-voltage converting circuit, overvoltage crowbar, voltage regulator circuit
It is connected with temperature sampling processor, the signal output end of the temperature sampling processor is connected with wireless radio frequency modules.
3. substation capacitors group Working Status Monitoring early warning system according to claim 2, it is characterised in that: the nothing
The chip that line communication module (7) uses is communication chip U1, the circuit structure of the wireless communication module (7) are as follows:
1 foot of the communication chip U1 is sequentially connected in series capacitor C1, is connected after crystal oscillator Y1, capacitor C3 with 28 feet of communication chip U1；
One end of the 2 foot shunt-wound capacitance C2 of the communication chip U1,7 feet of communication chip U1,11 feet of communication chip U1, communication
14 feet of chip U1 are connected behind one end of capacitor C9 with 3V input power, the other end ground connection of the capacitor C2, capacitor C9；
3 feet of the communication chip U1 are connected after being sequentially connected in series inductance L1, capacitor C4 with signal receiving antenna E1；
It is grounded after the 4 foot tandem electric inductance L2 of the communication chip U1；
5 feet of the communication chip U1 are simultaneously grounded after connecing 10 feet of communication chip U1,13 feet；
One end of the 6 foot shunt-wound capacitance C5 of the communication chip U1 is connected behind one end of inductance L3 with one end of capacitor C6, described
The other end of capacitor C6 and the other end for meeting inductance L3, one end of capacitor C7 are connected behind one end of capacitor C8 with 3V input power,
The other end of the capacitor C8 is grounded；
8 feet of the communication chip U1 are connected with the other end of capacitor C5；
9 feet of the communication chip U1 are connected with the other end of capacitor C7；
It is grounded after the 17 foot serial capacitance C10 of the communication chip U1；
One end of the 19 foot shunt-wound capacitance C13 of the communication chip U1 is connected behind one end of resistance R1 with one end of resistance R2；
It is connected after 20 feet of the communication chip U1 and the other end of connecting resistance R1 with one end of capacitor C11, the capacitor C11's
Other end ground connection；
It is grounded after the 21 foot serial capacitance C12 of the communication chip U1；
22 feet of the communication chip U1 are connected with the other end of capacitor C13；
It is connected after 23 feet of the communication chip U1 and the other end of connecting resistance R2 with one end of resistance R3；
24 feet of the communication chip U1 are connected with 5V input power；
It is connected after 25 feet of the communication chip U1 and the other end of connecting resistance R3 with the control terminal of central controller (2)；
27 feet of the communication chip U1 are connected with the control terminal of central controller (2).
4. substation capacitors group Working Status Monitoring early warning system according to claim 3, it is characterised in that: described logical
Believe the model MAX1473 of chip U1；
The control chip model that the wireless temperature measure module (8) uses is TMS320C5509.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811548132.2A CN109725215A (en) | 2018-12-18 | 2018-12-18 | Substation capacitors group Working Status Monitoring early warning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811548132.2A CN109725215A (en) | 2018-12-18 | 2018-12-18 | Substation capacitors group Working Status Monitoring early warning system |
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Family
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644736A (en) * | 2009-09-08 | 2010-02-10 | 河南省电力公司平顶山供电公司 | Internal operation image real-time monitoring system for high-voltage electric apparatus |
| CN204241588U (en) * | 2014-11-11 | 2015-04-01 | 国家电网公司 | Current transformer operating state monitoring system |
| CN105157870A (en) * | 2015-07-24 | 2015-12-16 | 南京理工大学 | Online temperature measurement system based on passive wireless sound surface wave sensors |
| CN107014424A (en) * | 2016-01-28 | 2017-08-04 | 北京智芯微电子科技有限公司 | A kind of power capacitor monitoring method and system based on nanometer flexible sensor |
| CN108896100A (en) * | 2018-05-09 | 2018-11-27 | 北京国网普瑞特高压输电技术有限公司 | A kind of capacitor group status monitoring subsystem |
-
2018
- 2018-12-18 CN CN201811548132.2A patent/CN109725215A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644736A (en) * | 2009-09-08 | 2010-02-10 | 河南省电力公司平顶山供电公司 | Internal operation image real-time monitoring system for high-voltage electric apparatus |
| CN204241588U (en) * | 2014-11-11 | 2015-04-01 | 国家电网公司 | Current transformer operating state monitoring system |
| CN105157870A (en) * | 2015-07-24 | 2015-12-16 | 南京理工大学 | Online temperature measurement system based on passive wireless sound surface wave sensors |
| CN107014424A (en) * | 2016-01-28 | 2017-08-04 | 北京智芯微电子科技有限公司 | A kind of power capacitor monitoring method and system based on nanometer flexible sensor |
| CN108896100A (en) * | 2018-05-09 | 2018-11-27 | 北京国网普瑞特高压输电技术有限公司 | A kind of capacitor group status monitoring subsystem |
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Application publication date: 20190507 |
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