CN104020411A - On-line monitoring system for high-voltage GIS - Google Patents
On-line monitoring system for high-voltage GIS Download PDFInfo
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- CN104020411A CN104020411A CN201410264055.3A CN201410264055A CN104020411A CN 104020411 A CN104020411 A CN 104020411A CN 201410264055 A CN201410264055 A CN 201410264055A CN 104020411 A CN104020411 A CN 104020411A
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Abstract
The invention discloses an on-line monitoring system for a high-voltage GIS. The on-line monitoring system for the high-voltage GIS comprises sensors, a mechanical state collection module, a temperature state collection module, an isolation module, a main control module, a communication module and a power module supplying power to all modules. The sensors comprise the hall current sensor, an optical-electricity encoder and the infrared temperature sensor. The mechanical state collection module comprises an amplification circuit, a filtering circuit and an AD conversion circuit which are connected in sequence. The temperature state collection module comprises an input protection circuit and an IIC bus circuit. The isolation module comprises a digital isolation chip and a magnetic coupling isolation chip. The main control module is connected with the isolation module, receives signals isolated through the isolation module, and is in communication connection with an upper computer through the communication module. The power module supplies power to the on-line monitoring system for the high-voltage GIS.
Description
Technical field
The present invention relates to power switchgear status monitoring field, particularly a kind of high pressure GIS on-line monitoring system.
Background technology
GIS is gas insulation metal seal combined electrical apparatus, is one of key equipment of electric system, if broken down in operational process again less than timely processing, may bring serious harm to operation of power networks.So GIS, especially high pressure GIS reliability of operation is directly connected to the safe operation of electric system.Therefore, increase the fault detect means of high pressure GIS, to finding that incipient fault, reduction Operation of Electric Systems cost, raising power system security and reliability have very important significance.Along with the prosperity and development of China's economic construction, the demand of electric system capacity and energy increases thereupon in recent years, and the reliability of electric system and economy have been proposed to more and more higher requirement.Take high pressure GIS as example, and the statistical figure of nearly ten years show, each high-tension switch gear accident average loss electric weight reaches millions of kilowatts, the economic loss that it causes is itself price thousands of times even tens thousand of times.Therefore, from safety in production angle, power system security, stablize most important.
For isolating switch, the fault of the inefficacy of operating mechanism and gear train mechanical property and electric control loop, subsidiary loop tends to cause serious mechanical fault.For avoiding isolating switch to occur the serious mechanical fault such as tripping and malfunction, conventionally with the mechanical property of online mode switching devices, monitor.In high pressure GIS operational process, the reasons such as mechanical vibration, contact ablation all may cause the temperature rising of bus junction to cause oxidation, contact resistance is further increased, temperature further rises, and then there is local melting welding or produce even arc discharge of spark, bring disaster to insulating material around, may cause the apparatus insulated amplification destruction that occurs, equipment breaks down.Therefore, the temperature characterisitic of power equipment being carried out to on-line monitoring, is avoid significant trouble to occur and control the effective means that fault worsens.
The environment of power equipment machine performance monitoring product work is generally all strong electromagnetic interference environment, and monitor signal is very easily interfered, and causes result inaccurate, and even the situation of false alarm, misoperation occurs.High pressure GIS on-line monitoring system involved in the present invention, from the angle of anti-electromagnetic interference (EMI), has designed effective signal conditioning circuit, and has adopted digital isolating chip and magnetic coupling isolating chip, has reduced the impact of electromagnetic interference (EMI) on on-line monitoring system.The model of power equipment in electric system, electric pressure, parameter kind are very many, and different equipment has different monitoring requirements, and the on-line monitoring product on market is mostly only applicable for certain type product now, and function is limited.
Summary of the invention
For the defect of prior art, the invention provides a kind of high pressure GIS on-line monitoring system.
A high pressure GIS on-line monitoring system, described system comprises: sensor, machine performance acquisition module, state of temperature acquisition module, isolation module, main control module, communication module and the power module of powering for modules, is characterized in that:
(1) described sensor
Collection high pressure GIS control loop divides, closing coil electric current, and the Hall current sensor that gathers energy storage motor electric current;
Gather the incremental optical-electricity encoder of high pressure GIS main shaft angel shifting signal;
Gather the infrared temperature sensor of high pressure GIS bus junction temperature signal;
Described Hall current sensor, photoelectric encoder further connect respectively described machine performance acquisition module; Described machine performance acquisition module comprises connected successively amplifying circuit, filtering circuit and A/D convertor circuit, for the signal of collection form with digital signal after amplification, filtering, AD conversion is exported to described main control module by described isolation module in the mode of isolation output;
Described infrared temperature sensor further connects described state of temperature acquisition module; Described state of temperature acquisition module comprises I IC bus circuit and input protection circuit, and wherein infrared temperature sensor is connected with I IC bus circuit, for temperature data is exported to described main control module by described isolation module in the mode of isolation output; Input protection module absorbs entering high voltage and the disturbing pulse of state of temperature acquisition module, and protection back-end circuit modules is avoided superpotential and impacted;
(2) described main control module
The signal of reception after isolation module isolation, and further the signal collecting is sent to host computer and liquid crystal display by communication module.
Preferably, described main control module comprises timer, and described main control module is to realize encoder modes to receive the photoelectric encoder signal after isolation by timer.
Preferably; described amplifying circuit is selected instrumentation amplifier, by amplifying the selection of resistance, reaches different amplification requirements, and connects a Transient Suppression Diode between the in-phase input end of amplifier and reverse input end; suppress surge, protection late-class circuit.
Described filtering circuit builds the quadravalence Butterworth LPF of Sallen-Key structure by operational amplifier, remove nonuseable part and noise in signal band, remains with the signal of use; .
Described machine performance acquisition module further comprises absolute value circuit, and it is for filtered signal is carried out to absolute value processing, and described absolute value circuit adopts operational amplifier to form absolute value circuit.
Preferably, described input protection circuit comprises high pressure ceramic disc capacitor and Transient Voltage Suppressor.
Preferably, described main control module is used the STM32F407 Series of MCU based on ARM, and operation RT-Thread embedded OS and described on-line monitoring system adopt multithreading to process multiple signals.
Described communication module comprises RS485 interface, CAN bus interface, FSMC interface.
Preferably, described isolation module comprises digital isolating chip and magnetic coupling isolating chip, and digital isolating chip input end connects mechanical state acquisition module, and magnetic coupling isolating chip input end connects state of temperature acquisition module.
The invention has the beneficial effects as follows: owing to having adopted non-contact measurement method, and numeral isolation and the isolation of magnetic coupling, make system rejection to disturbance ability strong, owing to having adopted filtering circuit and high-precision A/D that measuring accuracy is improved, owing to having adopted embedded system and multithreading, processing speed is improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the present of invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, the present invention is a kind of high pressure GIS on-line monitoring system, comprises sensor, machine performance acquisition module, state of temperature acquisition module, isolation module, main control module, communication module, and power module.Respectively it is described in detail below.
Described sensor comprises Hall current sensor, photoelectric encoder, infrared temperature sensor.
The control loop of GIS by minute, closing coil electric current control isolating switch deciliter, the size of electric current, waveform can reflect that whether the machine performance of isolating switch is normal, use Hall current sensor to gather current signal and can realize non-contact measurement, response is fast, and measuring accuracy is high.
Photoelectric encoder is arranged on GIS breaker main shaft, gathers main shaft and rotates the signal producing, and utilizes Principle of Grating Diffraction to realize displacement-digital conversion, by opto-electronic conversion, converts the geometry of machinery displacement on main shaft to pulse digit amount.
The temperature rise of infrared temperature sensor for measuring GIS bus junction, is non-contact measurement, can realize high-low pressure isolation.
Machine performance acquisition module comprises connected successively amplifying circuit, filtering circuit and A/D convertor circuit, and amplifying circuit is selected instrumentation amplifier, by amplifying the selection of resistance, reaches different amplification requirements.Between the in-phase input end of amplifier and reverse input end, connect a Transient Suppression Diode, suppress surge, protection late-class circuit.Filtering circuit builds the quadravalence Butterworth LPF of Sallen-Key structure by operational amplifier, remove nonuseable part and noise in signal band, remains with the signal of use.After filtering, signal is carried out to absolute value processing, use operational amplifier to form absolute value circuit, meet the requirement of late-class circuit analog to digital converter to input signal.
AD modular converter is converted to digital signal by the simulating signal after amplification filtering, and AD modular converter can be used multipath A/D converter ADC128S102, and the serial data of ADC128S102 is exported compatible SPI, QSPI, the standards such as MICROW-IRE.Main control chip support adopts the data transmission of these standards, so just can be easily by the data transmission after conversion to main control chip.
State of temperature acquisition module comprises iic bus circuit and input protection circuit, and infrared temperature sensor is connected with iic bus circuit, sends temperature data.Input protection module absorbs entering the high voltage of module and disturbing pulse etc.; protection back-end circuit modules is avoided superpotential and is impacted; make the protected module can safety, stable work; for example can adopt high pressure ceramic disc capacitor and Transient Voltage Suppressor; by the disturbing pulse in high pressure ceramic disc capacitor filtered signal, by Transient Voltage Suppressor, suppress high voltage with protection subsequent conditioning circuit.
Isolation module comprises digital isolating chip and magnetic coupling isolating chip, numeral isolating chip input end connects mechanical state acquisition module, magnetic coupling isolating chip input end connects state of temperature acquisition module, can destroy interference channel, cut off interference and coupling passage, makes signal more reliable.The output terminal of two isolating chips all connects main control chip.Take above interference protection measure, power equipment machine performance on-line monitoring modular circuit involved in the present invention has been passed through 4 grades of tests of electromagnetic compatibility.
Main control module is connected with isolation module, and main control module receives the signal after isolation.Main control module is used the STM32F407 Series of MCU based on ARM, and operation RT-Thread embedded OS, adopts multithreading to process each road signal, faster system response, and real-time is good.Main control module comprises timer, is configured to encoder modes, receives the photoelectric encoder signal after isolation.
Communication module comprises RS485 interface, CAN bus interface.Main control module can communicate to connect with host computer by communication module, can upload the information such as temperature parameter, mechanical parameter, record ripple, host computer also can send instruction to slave computer by CAN bus or RS485 interface, such as can to main control module issue parameter arrange order, to time or revise program in main control module etc.
Optionally, described main control module is connected with liquid crystal display by communication module, temperature or machine performance information that LCDs can real-time demonstration collects.Optionally, main control module by FSMC by the various Parameter storages in observation process in outside storer, can be for example nonvolatile memory, after main control module dead electricity, system is stored like this key parameter or program can not lost yet.
In sum, high pressure GIS on-line monitoring system of the present invention has the following advantages: (1) has adopted high-precision sensor and perfect signal pickup assembly, and precision is high, good reliability; (2) use high-performance microcontroller and move multithreading operation system, response is fast, and real-time is good; (3) adopt Hall current sensor, non-contact infrared temperature sensor, and in circuit, increased isolating chip, and high and low pressure side is directly electrical connection not, and both sides are separate, and high and low pressure side isolation is good; (4) anti-electromagnetic interference capability is strong, and the mode that adopts software and hardware to combine is eliminated electromagnetic interference (EMI); (5) abundant interface, can connect host computer, LCDs; (6) (7) can, according to different demand modify features, meet the on-line monitoring demand of distinct device.Generally speaking, device applicability of the present invention is wide, and measuring accuracy is high, and measurement range is wide, and high and low pressure side isolation is good, and anti-electromagnetic interference capability is strong, easily realizes, and is suitable for practical implementation.
Herein principle of the present invention and embodiment are set forth, above explanation is only for helping to understand method of the present invention and core concept thereof; , for those skilled in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (6)
1. a high pressure GIS on-line monitoring system, described system comprises: sensor, machine performance acquisition module, state of temperature acquisition module, isolation module, main control module, communication module and the power module of powering for modules, is characterized in that:
(1) described sensor
Collection high pressure GIS control loop divides, closing coil electric current, and the Hall current sensor that gathers energy storage motor electric current;
Gather the incremental optical-electricity encoder of high pressure GIS main shaft angel shifting signal;
Gather the infrared temperature sensor of high pressure GIS bus junction temperature signal;
Described Hall current sensor, photoelectric encoder further connect respectively described machine performance acquisition module; Described machine performance acquisition module comprises connected successively amplifying circuit, filtering circuit and A/D convertor circuit, for the signal of collection form with digital signal after amplification, filtering, AD conversion is exported to described main control module by described isolation module in the mode of isolation output;
Described infrared temperature sensor further connects described state of temperature acquisition module; Described state of temperature acquisition module comprises I IC bus circuit and input protection circuit, and wherein infrared temperature sensor is connected with I IC bus circuit, for temperature data is exported to described main control module by described isolation module in the mode of isolation output; Input protection module absorbs entering high voltage and the disturbing pulse of state of temperature acquisition module, and protection back-end circuit modules is avoided superpotential and impacted;
(2) described main control module
The signal of reception after isolation module isolation, and further the signal collecting is sent to host computer and liquid crystal display by communication module.
2. high pressure GIS on-line monitoring system according to claim 1, is characterized in that:
Described main control module comprises timer, and described main control module is realized encoder modes by timer and received the photoelectric encoder signal after isolation.
3. high pressure GIS on-line monitoring system according to claim 1, is characterized in that:
Described amplifying circuit is selected instrumentation amplifier, by amplifying the selection of resistance, reaches different amplification requirements, and connects a Transient Suppression Diode between the in-phase input end of amplifier and reverse input end, suppresses surge, protection late-class circuit;
Described filtering circuit builds the quadravalence Butterworth LPF of Sallen-Key structure by operational amplifier, remove nonuseable part and noise in signal band, remains with the signal of use;
Described machine performance acquisition module further comprises absolute value circuit, and for filtered signal is carried out to absolute value processing, described absolute value circuit adopts operational amplifier to form absolute value circuit.
4. high pressure GIS on-line monitoring system according to claim 1, is characterized in that:
Preferably, described input protection circuit comprises high pressure ceramic disc capacitor and Transient Voltage Suppressor.
5. high pressure GIS on-line monitoring system according to claim 1, is characterized in that:
Described main control module is used the microcontroller of the STM32F407 serial model No. based on ARM, and operation RT-Thread embedded OS and described on-line monitoring system adopt multithreading to process multiple signals;
Described communication module comprises RS485 interface, CAN bus interface, FSMC interface.
6. high pressure GIS on-line monitoring system according to claim 1, is characterized in that:
Described isolation module comprises digital isolating chip and magnetic coupling isolating chip, and digital isolating chip input end connects mechanical state acquisition module, and magnetic coupling isolating chip input end connects state of temperature acquisition module.
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| CN201410264055.3A CN104020411A (en) | 2014-06-13 | 2014-06-13 | On-line monitoring system for high-voltage GIS |
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Cited By (11)
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| CN104749489A (en) * | 2015-04-07 | 2015-07-01 | 西安交通大学 | High voltage GIS device breakdown discharge positioning system based on vibration signals |
| CN104779568A (en) * | 2014-12-11 | 2015-07-15 | 平高集团有限公司 | Online monitoring system for GIS busbar barrel |
| WO2016058526A1 (en) * | 2014-10-14 | 2016-04-21 | 中国西电电气股份有限公司 | Internal video monitoring system and method for gis device |
| CN105866648A (en) * | 2016-06-24 | 2016-08-17 | 国网河南长葛市供电公司 | Insulation detecting system for power transmission cables |
| CN108565150A (en) * | 2018-06-04 | 2018-09-21 | 广东电网有限责任公司 | Divide-shut brake location calibration device, open isolating switch and system |
| CN108957091A (en) * | 2018-04-11 | 2018-12-07 | 四川大学 | Electric switch equipment current of electric on-line monitoring system based on hall sensing principle |
| CN109883482A (en) * | 2019-03-19 | 2019-06-14 | 西安交通大学 | Acquire the system and method for high-voltage circuitbreaker electric current and vibration signal in GIS |
| CN110042431A (en) * | 2019-06-10 | 2019-07-23 | 内蒙古科技大学 | A kind of metallurgical electrolysis furnace on-Line Monitor Device and method |
| CN112433131A (en) * | 2020-11-10 | 2021-03-02 | 珠海格力电器股份有限公司 | Arc analysis system, method and device |
| CN113311752A (en) * | 2021-05-25 | 2021-08-27 | 中国科学院近代物理研究所 | High-voltage electric field rapid modulation control and real-time monitoring device and using method thereof |
| CN113591333A (en) * | 2021-09-30 | 2021-11-02 | 南方电网科学研究院有限责任公司 | Construction method of GIS (gas insulated switchgear) temperature simulation model based on digital twinning |
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| CN201803857U (en) * | 2010-08-20 | 2011-04-20 | 中国西电电气股份有限公司 | On-line monitoring and diagnosing system for mechanical properties of GIS (Gas-Insulated Metal-Enclosed Switchgear) control mechanism |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10666907B2 (en) | 2014-10-14 | 2020-05-26 | China Xd Electric Co., Ltd. | Internal video monitoring system and method for GIS device |
| WO2016058526A1 (en) * | 2014-10-14 | 2016-04-21 | 中国西电电气股份有限公司 | Internal video monitoring system and method for gis device |
| CN104779568A (en) * | 2014-12-11 | 2015-07-15 | 平高集团有限公司 | Online monitoring system for GIS busbar barrel |
| CN104779568B (en) * | 2014-12-11 | 2017-01-25 | 平高集团有限公司 | Online monitoring system for GIS busbar barrel |
| CN104749489B (en) * | 2015-04-07 | 2018-04-27 | 西安交通大学 | A kind of high pressure GIS device breakdown breakdown location system based on vibration signal |
| CN104749489A (en) * | 2015-04-07 | 2015-07-01 | 西安交通大学 | High voltage GIS device breakdown discharge positioning system based on vibration signals |
| CN105866648A (en) * | 2016-06-24 | 2016-08-17 | 国网河南长葛市供电公司 | Insulation detecting system for power transmission cables |
| CN108957091A (en) * | 2018-04-11 | 2018-12-07 | 四川大学 | Electric switch equipment current of electric on-line monitoring system based on hall sensing principle |
| CN108565150A (en) * | 2018-06-04 | 2018-09-21 | 广东电网有限责任公司 | Divide-shut brake location calibration device, open isolating switch and system |
| CN108565150B (en) * | 2018-06-04 | 2023-10-20 | 广东电网有限责任公司 | Opening and closing position calibration device, open type isolating switch and system |
| CN109883482A (en) * | 2019-03-19 | 2019-06-14 | 西安交通大学 | Acquire the system and method for high-voltage circuitbreaker electric current and vibration signal in GIS |
| CN110042431A (en) * | 2019-06-10 | 2019-07-23 | 内蒙古科技大学 | A kind of metallurgical electrolysis furnace on-Line Monitor Device and method |
| CN112433131A (en) * | 2020-11-10 | 2021-03-02 | 珠海格力电器股份有限公司 | Arc analysis system, method and device |
| CN113311752A (en) * | 2021-05-25 | 2021-08-27 | 中国科学院近代物理研究所 | High-voltage electric field rapid modulation control and real-time monitoring device and using method thereof |
| CN113311752B (en) * | 2021-05-25 | 2022-06-14 | 中国科学院近代物理研究所 | High-voltage electric field rapid modulation control and real-time monitoring device and using method thereof |
| CN113591333A (en) * | 2021-09-30 | 2021-11-02 | 南方电网科学研究院有限责任公司 | Construction method of GIS (gas insulated switchgear) temperature simulation model based on digital twinning |
| CN113591333B (en) * | 2021-09-30 | 2022-02-18 | 南方电网科学研究院有限责任公司 | Construction method of GIS (gas insulated switchgear) temperature simulation model based on digital twinning |
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Application publication date: 20140903 |