CN203479966U - On-line monitoring comprehensive processing unit for partial discharge signals of high-voltage switchgear - Google Patents
On-line monitoring comprehensive processing unit for partial discharge signals of high-voltage switchgear Download PDFInfo
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- CN203479966U CN203479966U CN201320451696.0U CN201320451696U CN203479966U CN 203479966 U CN203479966 U CN 203479966U CN 201320451696 U CN201320451696 U CN 201320451696U CN 203479966 U CN203479966 U CN 203479966U
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Abstract
The utility model discloses an on-line monitoring comprehensive processing unit for partial discharge signals of a high-voltage switchgear. The on-line monitoring comprehensive processing unit comprises a high-voltage switchgear cabinet and a power supply, and is characterized in that the on-line monitoring comprehensive processing unit also comprises a partial discharge monitoring sensor, a signal detection channel switching device, a partial discharge signal collector, a comprehensive processing unit and a GPRS wireless communication module which are sequentially connected through wires, a data exchanger, and a remote receiving terminal, wherein the GPRS wireless communication module and the data exchanger are connected with the remote receiving terminal by radio and network. The partial discharge monitoring sensor is installed inside or outside the high-voltage switchgear cabinet, detected partial discharge signals are collected to the comprehensive processing unit, and information is sent and transmitted by the GPRS wireless communication module and the data exchanger through the radio and the network to equipment managers and technician; and partial discharge can be detected and diagnosed, data can be stored, contrasted, inquired and uploaded, and the problem of products in the prior art during a high-voltage switchgear partial discharge on-line monitoring process is solved.
Description
Technical field
The utility model relates in a kind of intelligent grid research and the application of power supply or controller switching equipment on-line monitoring, particularly relates to the monitoring device of high-tension switch cabinet local discharge signal.
Background technology
High-tension switch cabinet shelf depreciation is electric discharge or the spark that has SI semi-insulation region between conductive electrode to produce in high-tension switch cabinet, if or certain region electric field intensity surpassed the breakdown field strength of insulating material, shelf depreciation just may be in this insulation position generation.Shelf depreciation can occur in the air gap of solid insulation, due to pollute or electric field inhomogeneous and occur on insulating material surface, or occur in the bubble in fluid insulation, or the gas corona of electrode.The mode of shelf depreciation emittance: electromagnetic radiation, with the form of radiowave, light and heat; Acoustic irradiation, can hear or ultrasound wave; Ozone and oxides of nitrogen.The deterioration of partial discharge phenomenon devices illustrated also may cause the accident, and worsening can be more and more serious, and consequently insulation can not be born electric field, and causes flashover, finally causes facility and electrical network in badly damaged switch cubicle to interrupt.At present, existing multiple technologies are monitored the local discharge signal of high-tension switch cabinet both at home and abroad, mainly contain radio frequency method, pulse current method, supercritical ultrasonics technology and superfrequency method etc.Yet, also there are in actual applications some problems, mainly comprise: 1, current monitoring technology producer is numerous, not unified standard; The signalling channel of 2 ,Ge manufacturers, harvester, data upload and storage format are different; The daemon software of 3 ,Ge manufacturers is different to the judgement of discharge capacity, and the definition of electric discharge type is not had to universality yet.Cause thus Monitoring Data inconsistent, Data Comparison is analyzed difficulty.In prior art products, mostly be isolated pick-up unit, cannot form inclusion test, diagnosis, data and store, contrast, inquire about and upload on-line monitoring total system.
Summary of the invention
The object of this invention is to provide a kind of high-tension switch cabinet local discharge signal on-line monitoring overall treatment unit, partial-discharge ultrahigh-frequency detecting sensor is arranged on to high-tension switch cabinet apparatus body outside, be generally near switch cabinet observation window and cabinet gap, and the local discharge signal detecting is collected to overall treatment unit, realize detection, diagnosis, the data of shelf depreciation and store, contrast, inquire about and upload, solve the problems referred to above that face in high-tension switch cabinet partial discharge monitoring.
For reaching upper object, the technical solution of the utility model is:
A high-tension switch cabinet local discharge signal on-line monitoring overall treatment unit, comprises high-voltage switch gear cabinet and power supply, characterized by further comprising:
Monitoring sensor is put in the office that is located at described high-tension switch cabinet external body or inside;
Input end puts by wire and described each innings the input censor key that monitors sensor signal output terminal is connected;
The Partial discharge signal collector that input end is connected with described input censor key signal output part by wire;
The overall treatment unit that input end is connected with described Partial discharge signal collector signal output part by wire;
The GPRS wireless communication module that input end is connected with described overall treatment cell signal output terminal by wire;
The data switching exchane that input end is connected with described overall treatment cell signal output terminal by wire;
GPRS wireless communication module and data switching exchane, by the long-range receiving end of radio and net connection.
It is one or more that monitoring sensor is put in described office, and it is similar and different that the measurement parameter of monitoring sensor is put in each innings.
Described long-range receiving end is mobile phone or computing machine.
It is superfrequency sensor that monitoring sensor is put in described office, detects frequency more than 300MHz.
High-tension switch cabinet local discharge signal on-line monitoring overall treatment of the present utility model unit, partial discharge detecting sensor based is arranged on to the outside or inner of high-voltage switch gear cabinet, and the local discharge signal detecting is collected to overall treatment unit, GPRS wireless communication module and data switching exchane are by transmission and the transmission of radio or network, the information of high-tension switch cabinet shelf depreciation is passed to equipment management personnel and technician, realize the detection of shelf depreciation, diagnosis, data storage, contrast, inquire about and upload, solved the problem of the product existence of prior art in high-tension switch cabinet partial discharge monitoring.And because the detection frequency of superfrequency method is more than 300MHz, can effectively avoid the impact that on-the-spot corona discharge and communication are disturbed, therefore be obviously better than ground electric wave method (detect frequency and be no more than 60MHz) aspect antijamming capability and detection sensitivity, and can pass through non-mode of entrance, near switch cabinet observation window and cabinet gap, the electromagnetic wave signal of generation is put in detection office.
Accompanying drawing explanation
Fig. 1 is structural principle block diagram of the present utility model;
In figure, monitoring sensor 1 is put in office; Input censor key 2; Partial discharge signal collector 3; Overall treatment unit 4; GPRS wireless communication module 5; Data switching exchane 6.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Shown in Fig. 1, it is structural principle block diagram of the present utility model, as we know from the figure, the utility model comprises by office puts monitoring sensor 1, input censor key 2, Partial discharge signal collector 3, overall treatment unit 4 and GPRS wireless communication module 5, from office, put monitoring sensor 1 and play GPRS wireless communication module 5, the signal output part of last minute is sequentially connected by wire with the signal input part of lower some.Wherein, the signal output part of overall treatment unit 4 is also connected by wire with the signal input part of data switching exchane 6; GPRS wireless communication module 5 and data switching exchane 6, by the long-range receiving end of radio and net connection.Described long-range receiving end is mobile phone or computing machine.The superfrequency sensor that monitoring sensor 1 is mainly monitoring ELECTROMAGNETIC RADIATION SIGNATURE is put in described office, detects frequency at the radio frequency between 300MHz and 3000MHz, is installed on high-tension switch cabinet body outside, is convenient to installation, observation and safeguards.By external sensing principle, realize detection and the location of high-tension switch cabinet shelf depreciation, be applicable to the insulation defect of switch cubicle to carry out online diagnosis and detection, and can in several seconds, obtain test result, be the effective means of carrying out status monitoring and fault diagnosis.Described office puts monitoring sensor and determines according to the size of the quantity of switch cubicle and cabinet, conventionally adopts the allocation plan of one, a cabinet.Also can be one or morely, it is similar and different that the measurement parameter of monitoring sensor is put in each innings, as measurement parameter has electromagenetic wave radiation signal.Certainly, office puts monitoring sensor and also can be placed in high-tension switch cabinet, and the detection of shelf depreciation and location are more accurate; Just installation, observation and maintenance are so not convenient.
Partial discharge signal collector 3 is the pre-service such as the detection information to inputting is identified, coding, and the information after processing is uploaded to overall treatment unit.
GPRS wireless communication module 5 is to utilize general grouped wireless communication service technology, and it is a kind of mobile data services that gsm mobile telephone user can use.
Above-mentioned office puts monitoring sensor 1, input censor key 2, Partial discharge signal collector 3, overall treatment unit 4, GPRS wireless communication module 5 and data switching exchane 6 and is prior art and prior art products, or is easily made according to prior art and requirement by those skilled in the art.
At present, 35 kV, the metal enclosed high-tension switch cabinet of 10 kV are widely used in transformer station.When the electrical equipment generation shelf depreciation of high-tension switch cabinet inside, the electromagnetic wave of discharge generation blazes abroad the liner of the seam crossing by metal cabinet or gas-insulated switch, concurrent generation transient voltage, the metal box shell by equipment is transmitted to the earth.Therefore, the detection to shelf depreciation in switch cubicle, both can make land used electric wave method measure transient state voltage-to-ground (being called for short TEV), also can use superfrequency method directly to measure the ultrahigh frequency electromagnetic wave signal of local discharge generation.Because the detection frequency of superfrequency method is more than 300MHz, can effectively avoid the impact that device context corona discharge and wireless telecommunications are disturbed, therefore be obviously better than ground electric wave method (detect frequency and be no more than 60MHz) aspect antijamming capability and detection sensitivity, and can pass through " non-intruding " mode, near switch cabinet observation window and cabinet gap, the electromagnetic wave signal of generation is put in the office of detection in real time.
Principle of work of the present utility model is:
1) partial discharge monitoring installation of sensors is outside or inner in high-tension switch cabinet, in Real-Time Monitoring high-tension switch cabinet corresponding to local discharge signals such as internal discharge, creeping discharge and corona discharges;
2) input censor key can switch selection to multichannel detection signal, and the Partial discharge signal at the required concrete interval of switch cubicle is uploaded to Partial discharge signal collector;
3) by fiber-optic signal line, Partial discharge signal collector is connected with overall treatment unit, detection signal is carried out to pre-service, and signal after processing is uploaded to overall treatment unit;
4) Partial discharge signal that overall treatment unit is uploaded each Partial discharge signal collector carries out analyzing and diagnosing, to when storage, and by GPRS wireless module forwarding office, put early warning signal and plant failure information to equipment management personnel in the very first time
5) Partial discharge signal electric discharge classification, the spectrogram information exchange after the diagnosis of overall treatment element analysis, contrast crossed data data switching exchane and is forwarded to long-range receiving end, for technician, transfers inquiry.
Embodiment
1. partial discharge detecting sensor based is installed on to high-tension switch cabinet body outside, by external sensing principle, detects ultrahigh frequency electromagnetic wave signal.Superfrequency sensor measurement bandwidth is 300MHz～2GHz, can select as required frequency sub-band therebetween;
2. input censor key and Partial discharge signal collector are installed in high-tension switch cabinet chamber, and are accessed each partial discharge detecting sensor based data line;
3. the local discharge signal that overall treatment unit is uploaded each collector carry out analyzing and diagnosing, to when storage; By the analysis to local discharge signal, diagnosable shelf depreciation type, the local discharge signal producing including but not limited to typical defects such as metallic particles, floating potential, inner corona, solid insulation inherent vice, solid insulation surface are dirty.Meanwhile, local discharge signal contrast comprises: local discharging level contrast and longitudinally contrast.Specific as follows:
(1) local discharging level.The judgement reference value of the order of severity is put in the on-line monitoring unit office of providing, and the reference frame of the order of severity is provided to judge according to the variation of local discharging level and longitudinal comparison;
(2) longitudinal comparison.Monitoring device should have the longitudinal comparison function of different time sections, as mean value comparing function in the parameter different times such as signal amplitude, discharge capacity, pulse repetition rate, in differentiating the shelf depreciation order of severity, provides judgement empirical value;
4. the make tentative diagnosis of overall treatment unit to Partial Discharge Detection signal, and the very first time equipment early warning signal and plant failure information exchange are crossed to GPRS wireless communication module transmitting apparatus early warning signal to technician's mobile phone; Early warning signal content comprises: basic shelf depreciation characterization parameter and the various statistical nature parameters such as the amplitude of pre-warning time, source of early warning title, on-line monitoring unit measurement discharge signal, phase place, frequency spectrum, the electric discharge frequency;
5. technician uses special purpose computer access overall treatment unit to verify and confirm equipment early warning signal, device early warning information, and analyzes judgement, formulates corresponding counter-measure.The counter-measure of taking comprises: on-the-spot repetition measurement, interruption maintenance etc.
The utility model is compared with prior art products, has the following advantages:
(1) flexible configuration: input censor key can gather Multi-channel monitoring sensor signal simultaneously, realizes flexible configuration, adapts to the on-the-spot needs of switch cubicle.Non-intruding detection mode, monitoring sensor can be installed on outside high-tension switch cabinet body, does not change equipment original structure and the method for operation, realizes primary circuit and secondary circuit isolation, does not affect the security of operation of electrical equipment; In installation process, need not have a power failure to equipment simultaneously;
(2) monitoring accurately: adopt superfrequency partial discharge monitoring technology, antijamming capability is strong, and the electromagnetic wave signal that sustainable detection is produced by shelf depreciation changes, and monitoring function adaptability is good, with a high credibility; Meanwhile, can detect, locate and judge PD, particle, projection, the switch cubicle equipment deficiency such as loosening;
(3) easy to maintenance: to adopt the arrangement of stelliform connection topology configuration, guarantee not have influence on the normal operation in other loop when to component maintenance such as its single-sensors;
(4) remote diagnosis: local discharge signal pattern can be stored, guarantees accuracy and the repeatability of local discharge signal pattern.By GPRS wireless communication module and data switching exchane, grasp in time surveyed data, and carry out remote maintenance;
(5) unified collocation: realize the Whole Process Control from local discharge signal detection, analyzing and diagnosing, early warning and history data store by sensor, overall treatment unit and data switching exchane;
(6) when scene is used, operating personnel only need be positioned over inside switch cabinet by analogue means, on switch cubicle surface, place ground radio wave sensor, just can realize the identification to the demarcation of discharge capacity and discharge mode.
Claims (4)
1. a high-tension switch cabinet local discharge signal on-line monitoring overall treatment unit, comprises high-voltage switch gear cabinet and power supply, characterized by further comprising:
Monitoring sensor (1) is put in the office that is located at described high-tension switch cabinet external body or inside;
Input end puts by wire and described each innings the input censor key (2) that monitoring sensor (1) signal output part is connected;
The Partial discharge signal collector (3) that input end is connected with described input censor key (2) signal output part by wire;
The overall treatment unit (4) that input end is connected with described Partial discharge signal collector (3) signal output part by wire;
The GPRS wireless communication module (5) that input end is connected with described overall treatment unit (4) signal output part by wire;
The data switching exchane (6) that input end is connected with described overall treatment unit (5) signal output part by wire;
GPRS wireless communication module (5) and data switching exchane (6), by the long-range receiving end of radio and net connection.
2. high-tension switch cabinet local discharge signal on-line monitoring overall treatment according to claim 1 unit, is characterized in that:
Monitoring sensor (1) is put for one or more in described office, and it is similar and different that the measurement parameter of monitoring sensor (1) is put in each innings.
3. high-tension switch cabinet local discharge signal on-line monitoring overall treatment according to claim 1 unit, is characterized in that:
Described long-range receiving end is mobile phone or computing machine.
4. high-tension switch cabinet local discharge signal on-line monitoring overall treatment according to claim 1 unit, is characterized in that:
It is superfrequency sensor that monitoring sensor (1) is put in described office, detects frequency more than 300MHz.
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| CN201320451696.0U CN203479966U (en) | 2013-07-26 | 2013-07-26 | On-line monitoring comprehensive processing unit for partial discharge signals of high-voltage switchgear |
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| CN201320451696.0U CN203479966U (en) | 2013-07-26 | 2013-07-26 | On-line monitoring comprehensive processing unit for partial discharge signals of high-voltage switchgear |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061999A (en) * | 2014-07-08 | 2014-09-24 | 国家电网公司 | Partial discharge locating detection device of distribution transformer |
| CN104267320A (en) * | 2014-10-08 | 2015-01-07 | 广西电网有限责任公司玉林供电局 | High-voltage switch cabinet partial discharge monitoring system based on ultrahigh-frequency electromagnetic wave detection |
| CN104502759A (en) * | 2014-12-19 | 2015-04-08 | 国家电网公司 | Intelligent monitoring system of distribution network switch cabinet |
| CN104730440A (en) * | 2015-04-03 | 2015-06-24 | 国家电网公司 | TEV-based switch cabinet partial discharge detection system |
| CN105158657A (en) * | 2015-08-26 | 2015-12-16 | 芜湖市凯鑫避雷器有限责任公司 | High-voltage switch cabinet partial discharge online monitoring system |
| CN105301464A (en) * | 2015-11-26 | 2016-02-03 | 国网安徽省电力公司检修公司 | Movable type ultrahigh frequency partial discharge on-line monitoring system |
| CN105652158A (en) * | 2014-10-23 | 2016-06-08 | 国家电网公司 | Transformer partial discharge ultrasonic detection system |
| CN106199346A (en) * | 2015-05-28 | 2016-12-07 | 施耐德电器工业公司 | For monitoring the equipment of shelf depreciation in electrical network |
| CN106597228A (en) * | 2015-10-14 | 2017-04-26 | 南京智中信息技术有限公司 | Partial discharge wireless intelligent monitoring system |
| CN109828189A (en) * | 2019-02-19 | 2019-05-31 | 福建聚实新能源科技有限公司 | Partial discharge on-Line Monitor Device, system and method based on ubiquitous electric power Internet of Things |
| CN111638432A (en) * | 2020-06-10 | 2020-09-08 | 国网山东省电力公司烟台供电公司 | Automatic switch cabinet partial discharge detection equipment based on ultrahigh frequency detection method |
| CN113884846A (en) * | 2021-12-07 | 2022-01-04 | 山东理工大学 | Partial discharge and temperature rise online monitoring system for switch cabinet |
| CN114034993A (en) * | 2021-11-05 | 2022-02-11 | 国网青海省电力公司检修公司 | Local discharge positioning test method for switch cabinet based on TEV and ultrahigh frequency method |
| CN114459532A (en) * | 2021-12-10 | 2022-05-10 | 国网河南省电力公司漯河供电公司 | Passive wireless partial discharge and temperature and humidity composite sensing monitoring system |
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2013
- 2013-07-26 CN CN201320451696.0U patent/CN203479966U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061999A (en) * | 2014-07-08 | 2014-09-24 | 国家电网公司 | Partial discharge locating detection device of distribution transformer |
| CN104267320A (en) * | 2014-10-08 | 2015-01-07 | 广西电网有限责任公司玉林供电局 | High-voltage switch cabinet partial discharge monitoring system based on ultrahigh-frequency electromagnetic wave detection |
| CN105652158A (en) * | 2014-10-23 | 2016-06-08 | 国家电网公司 | Transformer partial discharge ultrasonic detection system |
| CN104502759A (en) * | 2014-12-19 | 2015-04-08 | 国家电网公司 | Intelligent monitoring system of distribution network switch cabinet |
| CN104730440A (en) * | 2015-04-03 | 2015-06-24 | 国家电网公司 | TEV-based switch cabinet partial discharge detection system |
| CN106199346B (en) * | 2015-05-28 | 2022-10-28 | 施耐德电器工业公司 | Device for monitoring partial discharges in an electrical network |
| CN106199346A (en) * | 2015-05-28 | 2016-12-07 | 施耐德电器工业公司 | For monitoring the equipment of shelf depreciation in electrical network |
| CN105158657A (en) * | 2015-08-26 | 2015-12-16 | 芜湖市凯鑫避雷器有限责任公司 | High-voltage switch cabinet partial discharge online monitoring system |
| CN106597228A (en) * | 2015-10-14 | 2017-04-26 | 南京智中信息技术有限公司 | Partial discharge wireless intelligent monitoring system |
| CN105301464A (en) * | 2015-11-26 | 2016-02-03 | 国网安徽省电力公司检修公司 | Movable type ultrahigh frequency partial discharge on-line monitoring system |
| CN109828189A (en) * | 2019-02-19 | 2019-05-31 | 福建聚实新能源科技有限公司 | Partial discharge on-Line Monitor Device, system and method based on ubiquitous electric power Internet of Things |
| CN111638432A (en) * | 2020-06-10 | 2020-09-08 | 国网山东省电力公司烟台供电公司 | Automatic switch cabinet partial discharge detection equipment based on ultrahigh frequency detection method |
| CN114034993A (en) * | 2021-11-05 | 2022-02-11 | 国网青海省电力公司检修公司 | Local discharge positioning test method for switch cabinet based on TEV and ultrahigh frequency method |
| CN113884846A (en) * | 2021-12-07 | 2022-01-04 | 山东理工大学 | Partial discharge and temperature rise online monitoring system for switch cabinet |
| CN113884846B (en) * | 2021-12-07 | 2022-02-15 | 山东理工大学 | Partial discharge and temperature rise online monitoring system for switch cabinet |
| CN114459532A (en) * | 2021-12-10 | 2022-05-10 | 国网河南省电力公司漯河供电公司 | Passive wireless partial discharge and temperature and humidity composite sensing monitoring system |
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