CN105606884A - Sensor for capacitive apparatus end screen current measurement - Google Patents
Sensor for capacitive apparatus end screen current measurement Download PDFInfo
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- CN105606884A CN105606884A CN201610120456.0A CN201610120456A CN105606884A CN 105606884 A CN105606884 A CN 105606884A CN 201610120456 A CN201610120456 A CN 201610120456A CN 105606884 A CN105606884 A CN 105606884A
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- capacitive apparatus
- end shield
- apparatus end
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Embodiments of the invention disclose a sensor for capacitive apparatus end screen current measurement. The sensor comprises a power unit, a measurement unit, a data processing unit and a wireless communication unit. The power unit is electrically connected with the measurement unit, the data processing unit and the wireless communication unit. The power unit is used to collect the electric energy in capacitive apparatus end screen current and supply power to the measurement unit, the data processing unit and the wireless communication unit. The measurement unit is used to measure the capacitive apparatus end screen current so as to obtain capacitive apparatus end screen current signals. The data processing unit is used to process the capacitive apparatus end screen current signals so as to obtain characteristic parameters of the capacitive apparatus end screen current signals. The wireless communication unit is used for wireless transmission of the characteristic parameters of the capacitive apparatus end screen current signals. The sensor for capacitive apparatus end screen current measurement provided by the embodiments of the invention utilizes the magnetic field generated by the capacitive apparatus end screen current for the purpose of charging and energy storage, without the need of external power sources, thereby making the installation convenient.
Description
Technical field
The present invention relates to power equipment technical field of measurement and test, particularly relate to a kind of for the current measurement of capacitive apparatus end shieldSensor.
Background technology
Capacitive apparatus refers to the power equipment that adopts capacitance plate insulation system, mainly comprises condenser-type terminal, condenser type electric currentTransformer, capacitance type potential transformer, coupling capacitor etc., quantity accounts for the 40%-50% of substation equipment total quantity,The quality of its running status directly affects the safe operation of whole transformer station and even electrical network. In addition, High-Voltage Insulation technology isThe key technology of operation of power networks, most faults of extra-high voltage, supergrid show as insulation and wreck. Therefore,It is necessary, significant that capacitive apparatus insulated situation is monitored. The detected parameters of its insulation status mainly contains end shieldElectric current, capacitance, dielectric loss and insulaion resistance etc.
Wherein, in prior art, capacitive apparatus end shield current detecting is mainly adopted to active sensor, but due to active sensorDevice need to be laid power line and connection, causes that capacitive apparatus end shield current detecting equipment is installed difficulty, quantities is large.
Summary of the invention
In the embodiment of the present invention, provide a kind of sensor for the current measurement of capacitive apparatus end shield, to solve prior artMiddle capacitive apparatus end shield current detecting equipment is installed the problem difficult, quantities is large.
In order to solve the problems of the technologies described above, the embodiment of the invention discloses following technical scheme:
For a sensor for capacitive apparatus end shield current measurement, comprising: power subsystem, measuring unit, data processingUnit and radio communication unit, described power subsystem respectively with described measuring unit, data processing unit and wireless telecommunications listUnit's electrical connection;
Described power subsystem is used for gathering the electric energy of capacitive apparatus end shield electric current, and is respectively measuring unit, data processingUnit and radio communication unit power supply;
Described measuring unit, for capacitive apparatus end shield electric current is measured, obtains capacitive apparatus end shield current signal;
Described data processing unit, for described end shield current signal is processed, obtains capacitive apparatus end shield current signalCharacteristic parameter;
Described radio communication unit is for carrying out wireless transmission to the characteristic parameter of described capacitive apparatus end shield current signal.
Preferably, described power subsystem comprises energy monitoring module, energy-storage module and intelligent power consumption module;
The magnetic field automatic charging energy storage of described energy-storage module for utilizing capacitive apparatus end shield electric current to produce;
Described energy monitoring module is used for described energy-storage module to monitor, and by the energy storage transfer of data of energy-storage module extremelyIntelligence power consumption module;
Described intelligent power consumption module is used for according to described energy storage Data Control measuring unit, data processing unit and wireless telecommunicationsThe duty of unit.
Preferably, described intelligent power consumption module for according to described energy storage Data Control measuring unit, data processing unit andThe duty of radio communication unit, specifically comprises:
In the time that described intelligent power consumption module judges the energy shortage of described energy-storage module, control described sensor and enter dormancy shapeState;
In the time that described intelligent power consumption module judges the energy abundance of described energy-storage module, control described measuring unit, data placeReason unit and radio communication unit enter duty.
Preferably, described measuring unit comprises high precision electric current transducer, and described high precision electric current transducer is used for capacitiveEquipment end shield electric current is measured, and obtains capacitive apparatus end shield current signal.
Preferably, described data processing unit comprises wave filter, A/D converter and arithmetic unit;
Described wave filter is for carrying out filtering processing to described capacitive apparatus end shield current signal;
Described A/D converter is for carrying out A/D conversion to described filtering capacitive apparatus end shield after treatment current signal;
Described arithmetic unit, for the capacitive apparatus end shield current signal after described A/D conversion is processed, obtains capacitive and establishesThe characteristic parameter of standby end shield current signal.
Preferably, described radio communication unit comprises signal modulator, power amplifier and wireless launcher;
Described signal modulator is for modulating and carrier wave place the characteristic parameter of described capacitive apparatus end shield current signalReason;
Described power amplifier is for the characteristic parameter to capacitive apparatus end shield current signal after described modulation and carrier processingAmplify;
Described wireless launcher is for carrying out wireless to the characteristic parameter of the capacitive apparatus end shield current signal after described amplificationTransmission.
From above technical scheme, a kind of sensing for the current measurement of capacitive apparatus end shield that the embodiment of the present invention providesCharging energy-storing is carried out in the magnetic field that device utilizes capacitive apparatus end shield electric current to produce, without executing power supply outward, easy for installation; In addition,Energy monitoring module in power subsystem can be monitored the energy storage situation in energy-storage module, and according to energy storage situation pairMeasuring unit, data processing unit and radio communication unit carry out Based Intelligent Control.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existingIn technical description, the accompanying drawing of required use is briefly described, apparently, for those of ordinary skill in the art andSpeech, is not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of a kind of sensor for the current measurement of capacitive apparatus end shield that Fig. 1 provides for the embodiment of the present inventionFigure;
Fig. 2 shows for the logic control of a kind of sensor for the current measurement of capacitive apparatus end shield that the embodiment of the present invention providesIntention;
Symbol table in figure is shown: 1-power subsystem, and 2-measuring unit, 3-data processing unit, 4-radio communication unit,5-energy monitoring module, 6-energy-storage module, 7-intelligence power consumption module, 8-high precision electric current transducer, 9-wave filter, 10-A/DConverter, 11-arithmetic unit, 12-signal modulator, 13-power amplifier, 14-wireless launcher.
Detailed description of the invention
In order to make those skilled in the art person understand better the technical scheme in the present invention, below in conjunction with the invention processAccompanying drawing in example, is clearly and completely described the technical scheme in the embodiment of the present invention, obviously, and described realityExecuting example is only the present invention's part embodiment, instead of whole embodiment. Based on the embodiment in the present invention, abilityTerritory those of ordinary skill is not being made the every other embodiment obtaining under creative work prerequisite, all should belong to thisThe scope of invention protection.
In order to solve the problem that power line causes installation of sensors difficulty of laying, the one that the embodiment of the present invention provides is for holdingProperty equipment end shield current measurement the sensor magnetic field that utilizes capacitive apparatus end shield electric current to produce carry out charging energy-storing, without outsideConnect power supply, make installation of sensors convenient; In addition, by the energy monitoring module 5 in power subsystem 1 to energy-storage module 6In energy storage situation monitor, and according to energy storage situation to measuring unit 2, data processing unit 3 and wireless telecommunications listUnit 4 carries out Based Intelligent Control. Below in conjunction with accompanying drawing, its concrete structure and working method are elaborated.
The structural representation of a kind of sensor for the current measurement of capacitive apparatus end shield that Fig. 1 provides for the embodiment of the present inventionFigure, as shown in Figure 1, a kind of sensor for the current measurement of capacitive apparatus end shield that the embodiment of the present invention provides, comprising:Power subsystem 1, measuring unit 2, data processing unit 3 and radio communication unit 4, power subsystem 1 respectively with described surveyAmount unit 2, data processing unit 3 and radio communication unit 4 are electrically connected, and power subsystem 1 can gather capacitive apparatus endThe electric energy of screen in electric current, and by the delivery of electrical energy gathering to measuring unit 2, data processing unit 3 and radio communication unit 4,Demand to electric energy when meeting its work. Utilize dexterously in embodiments of the present invention in capacitive apparatus end shield electric currentElectric energy is sensor power supply, avoids as sensor external power supply, and then without circumscripted power line, easy for installation.
After power subsystem 1 is measuring unit 2, data processing unit 3 and radio communication unit 4 power supplies, measuring unit2 pairs of capacitive apparatus end shield electric currents are measured, and obtain capacitive apparatus end shield current signal; Data processing unit 3 is to describedEnd shield current signal is processed, and obtains the characteristic parameter of capacitive apparatus end shield current signal; Radio communication unit 4 is to instituteThe characteristic parameter of stating capacitive apparatus end shield current signal carries out wireless transmission, and then completes the survey to capacitive apparatus end shield electric currentAmount.
In a kind of preferred embodiment of the present invention, power subsystem 1 comprises energy monitoring module 5, energy-storage module 6 and intelligencePower consumption module 7; Wherein, the magnetic field automatic charging energy storage of energy-storage module 6 for utilizing capacitive apparatus end shield electric current to produce;Energy monitoring module 5 is for described energy-storage module 6 is monitored, and by the energy storage transfer of data of energy-storage module 6 to intelligenceEnergy power consumption module 7; Intelligence power consumption module 7 is for according to described energy storage Data Control measuring unit 2, data processing unit 3Duty with radio communication unit 4, is specially: when intelligent power consumption module 7 judges the energy of described energy-storage module 6When not enough, control described sensor and enter resting state; When intelligent power consumption module 7 judges the energy of described energy-storage module 6When sufficient, control described measuring unit 2, data processing unit 3 and radio communication unit 4 and enter duty. At thisInvent in a kind of preferred embodiment, the delay time of delayer is set as 30 seconds, but it should be pointed out that the skill of this areaArt personnel can be according to actual needs carry out correspondence adjustment to the delay time of delayer, for example, and during by the time delay of delayerBetween be set as 20 seconds, 40 seconds or 50 seconds etc., within it all should fall into protection scope of the present invention.
In addition, in intelligent power consumption module 7, be also provided with delayer, when intelligent power consumption module 7 judges the energy of energy-storage module 6Quantity not sufficient, when control survey unit 2, data processing unit 3 and radio communication unit 4 enter resting state, opensMoving delayer, again starts energy monitoring module 5 and carries out energy judgement, until intelligent power consumption module after time delay a period of time7 judge when the energy of energy-storage module 6 is sufficient, control survey unit 2, data processing unit 3 and radio communication unit 4Start, enter duty.
In a kind of preferred embodiment of the present invention, measuring unit 2 comprises high precision electric current transducer 8, described high precision electroFlow sensor 8, for capacitive apparatus end shield electric current is measured, obtains capacitive apparatus end shield current signal.
In a kind of preferred embodiment of the present invention, data processing unit 3 comprises wave filter 9, A/D converter 10 and computingDevice 11, wherein, wave filter 9 is for carrying out filtering processing to described capacitive apparatus end shield current signal; A/D converter 10For described filtering capacitive apparatus end shield after treatment current signal is carried out to A/D conversion; Arithmetic unit 11 is for to describedCapacitive apparatus end shield current signal after A/D conversion is processed, and obtains the characteristic parameter of capacitive apparatus end shield current signal.
In a kind of preferred embodiment of the present invention, radio communication unit 4 comprises signal modulator 12, power amplifier 13With wireless launcher 14; Wherein, signal modulator 12 is for the characteristic parameter to described capacitive apparatus end shield current signalModulate and carrier processing; Power amplifier 13 is for believing capacitive apparatus end shield electric current after described modulation and carrier processingNumber characteristic parameter amplify; Wireless launcher 14 is for the spy of the capacitive apparatus end shield current signal to after described amplificationLevy parameter and carry out wireless transmission.
Understand better the technical program for the ease of those skilled in the art, below in conjunction with Fig. 2 to the embodiment of the present inventionThe course of work of a kind of sensor for the current measurement of capacitive apparatus end shield providing is elaborated.
Fig. 2 shows for the logic control of a kind of sensor for the current measurement of capacitive apparatus end shield that the embodiment of the present invention providesIntention, as shown in Figure 2, it mainly comprises the following steps:
Step S100: energy-storage module 6 starts;
The magnetic field automatic charging energy storage that utilizes capacitive apparatus end shield electric current to produce after energy-storage module 6 starts.
Step S200: energy detection module is carried out energy monitoring;
Energy monitoring module 5 is monitored the stored energy of energy-storage module 6, and by the energy storage data of energy-storage module 6Transfer to intelligent power consumption module 7.
Step S300: intelligent power consumption module 7 is carried out energy judgement;
In the time that described intelligent power consumption module 7 judges the energy shortage of described energy-storage module 6, control sensor and enter dormancy shapeState; Meanwhile, time delay, after 30 seconds, is returned to step S200 and is re-started energy monitoring;
In the time that described intelligent power consumption module 7 judges that the energy of described energy-storage module 6 is sufficient, control described measuring unit 2,Data processing unit 3 and radio communication unit 4 start, and enter duty.
Wherein, after measuring unit 2, data processing unit 3 and radio communication unit 4 start, high precision electric current transducer8 pairs of capacitive apparatus end shield electric currents are measured, and obtain capacitive apparatus end shield current signal; Wave filter 9 is established described capacitiveStandby end shield current signal carries out filtering processing; A/D converter 10 is believed described filtering capacitive apparatus end shield after treatment electric currentNumber carry out A/D conversion; Capacitive apparatus end shield current signal after arithmetic unit 11 is changed described A/D is processed, and obtainsThe characteristic parameter of capacitive apparatus end shield current signal; The feature of signal modulator 12 to described capacitive apparatus end shield current signalParameter is modulated and carrier processing; Power amplifier 13 to described modulation and carrier processing after capacitive apparatus end shield electric current letterNumber characteristic parameter amplify; The feature ginseng of the capacitive apparatus end shield current signal of wireless launcher 14 after to described amplificationAmount is carried out wireless transmission, and then completes the measurement to capacitive apparatus end shield electric current.
From above technical scheme, a kind of sensing for the current measurement of capacitive apparatus end shield that the embodiment of the present invention providesCharging energy-storing is carried out in the magnetic field that device utilizes capacitive apparatus end shield electric current to produce, without executing power supply outward, easy for installation; In addition,Energy monitoring module 5 in power subsystem 1 can be monitored the energy storage situation in energy-storage module 6, and according to energy storageSituation is carried out Based Intelligent Control to measuring unit 2, data processing unit 3 and radio communication unit 4.
It should be noted that, in this article, the relational terms such as " first " and " second " etc. be only used for byEntity or operation and another entity or operating space separate, and not necessarily require or imply these entities or behaviourBetween work, there is relation or the order of any this reality. And term " comprises ", " comprising " or it is anyOther variants are intended to contain comprising of nonexcludability, thus make to comprise a series of key elements process, method, article orEquipment not only comprises those key elements, but also comprises other key elements of clearly not listing, or is also included as this mistakeThe key element that journey, method, article or equipment are intrinsic. In the situation that there is no more restrictions, " comprise one by statementIndividual ... " key element that limits, and be also not precluded within process, method, article or the equipment that comprises described key element and existOther identical element.
The above is only the specific embodiment of the present invention, makes those skilled in the art can understand or realize the present invention.To be apparent to one skilled in the art to the multiple amendment of these embodiment, as defined herein oneAs principle can be in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments. Therefore, thisBrightly will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of noveltyThe widest consistent scope.
Claims (6)
1. for a sensor for capacitive apparatus end shield current measurement, it is characterized in that, comprising: power subsystem (1),Measuring unit (2), data processing unit (3) and radio communication unit (4), described power subsystem (1) respectively with instituteState measuring unit (2), data processing unit (3) and radio communication unit (4) electrical connection;
Described power subsystem (1) is for gathering the electric energy of capacitive apparatus end shield electric current, and be respectively measuring unit (2),Data processing unit (3) and radio communication unit (4) power supply;
Described measuring unit (2), for capacitive apparatus end shield electric current is measured, obtains capacitive apparatus end shield current signal;
Described data processing unit (3), for described end shield current signal is processed, obtains capacitive apparatus end shield electric currentThe characteristic parameter of signal;
Described radio communication unit (4) is for carrying out wireless transmission to the characteristic parameter of described capacitive apparatus end shield current signal.
2. the sensor for the current measurement of capacitive apparatus end shield according to claim 1, is characterized in that, described inPower subsystem (1) comprises energy monitoring module (5), energy-storage module (6) and intelligent power consumption module (7);
The magnetic field automatic charging energy storage of described energy-storage module (6) for utilizing capacitive apparatus end shield electric current to produce;
Described energy monitoring module (5) is for described energy-storage module (6) is monitored, and by energy-storage module (6)Energy storage transfer of data is to intelligent power consumption module (7);
Described intelligent power consumption module (7) is for according to described energy storage Data Control measuring unit (2), data processing unit (3)And the duty of radio communication unit (4).
3. the sensor for the current measurement of capacitive apparatus end shield according to claim 2, is characterized in that, described inIntelligence power consumption module (7) is for according to described energy storage Data Control measuring unit (2), data processing unit (3) and nothingThe duty of line communication unit (4), specifically comprises:
In the time that described intelligent power consumption module (7) judges the energy shortage of described energy-storage module (6), control described sensorEnter resting state;
In the time that described intelligent power consumption module (7) judges the energy abundance of described energy-storage module (6), control described measurement singleUnit (2), data processing unit (3) and radio communication unit (4) enter duty.
4. the sensor for the current measurement of capacitive apparatus end shield according to claim 1, is characterized in that, described inMeasuring unit (2) comprises high precision electric current transducer (8), and described high precision electric current transducer (8) is for establishing capacitiveStandby end shield electric current is measured, and obtains capacitive apparatus end shield current signal.
5. the sensor for the current measurement of capacitive apparatus end shield according to claim 1, is characterized in that, described inData processing unit (3) comprises wave filter (9), A/D converter (10) and arithmetic unit (11);
Described wave filter (9) is for carrying out filtering processing to described capacitive apparatus end shield current signal;
Described A/D converter (10) turns for described filtering capacitive apparatus end shield after treatment current signal is carried out to A/DChange;
Described arithmetic unit (11), for the capacitive apparatus end shield current signal after described A/D conversion is processed, obtainsThe characteristic parameter of capacitive apparatus end shield current signal.
6. the sensor for the current measurement of capacitive apparatus end shield according to claim 1, is characterized in that, described inRadio communication unit (4) comprises signal modulator (12), power amplifier (13) and wireless launcher (14);
Described signal modulator (12) is for modulating and carry the characteristic parameter of described capacitive apparatus end shield current signalRipple processing;
Described power amplifier (13) is for the feature to capacitive apparatus end shield current signal after described modulation and carrier processingParameter amplifies;
Described wireless launcher (14) carries out for the characteristic parameter of the capacitive apparatus end shield current signal to after described amplificationWireless transmission.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610120456.0A CN105606884A (en) | 2016-03-03 | 2016-03-03 | Sensor for capacitive apparatus end screen current measurement |
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| CN201610120456.0A CN105606884A (en) | 2016-03-03 | 2016-03-03 | Sensor for capacitive apparatus end screen current measurement |
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| CN201610120456.0A Pending CN105606884A (en) | 2016-03-03 | 2016-03-03 | Sensor for capacitive apparatus end screen current measurement |
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| CN102426328A (en) * | 2011-11-04 | 2012-04-25 | 山东电力集团公司济宁供电公司 | Capacitive equipment insulation state real-time on-line monitoring method |
| CN203688692U (en) * | 2013-12-31 | 2014-07-02 | 中电科技电子信息系统有限公司 | Multi-channel wireless monitoring device of high-voltage parallel capacitors |
| CN203858290U (en) * | 2014-04-14 | 2014-10-01 | 武汉金琅电气有限公司 | Wireless sensor for measuring end-screen current of capacitive equipment |
| CN104347258A (en) * | 2013-07-29 | 2015-02-11 | 北京瑞恒超高压电器研究所(普通合伙) | Insulated and error self-inspecting type full-intelligent current transformer |
| CN204882766U (en) * | 2015-09-09 | 2015-12-16 | 武一鸣 | Power grid operation state monitoring case |
| CN205404671U (en) * | 2016-03-03 | 2016-07-27 | 云南电网有限责任公司电力科学研究院 | A sensor that is used for capacitive equipment end screen current measurement |
-
2016
- 2016-03-03 CN CN201610120456.0A patent/CN105606884A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426328A (en) * | 2011-11-04 | 2012-04-25 | 山东电力集团公司济宁供电公司 | Capacitive equipment insulation state real-time on-line monitoring method |
| CN104347258A (en) * | 2013-07-29 | 2015-02-11 | 北京瑞恒超高压电器研究所(普通合伙) | Insulated and error self-inspecting type full-intelligent current transformer |
| CN203688692U (en) * | 2013-12-31 | 2014-07-02 | 中电科技电子信息系统有限公司 | Multi-channel wireless monitoring device of high-voltage parallel capacitors |
| CN203858290U (en) * | 2014-04-14 | 2014-10-01 | 武汉金琅电气有限公司 | Wireless sensor for measuring end-screen current of capacitive equipment |
| CN204882766U (en) * | 2015-09-09 | 2015-12-16 | 武一鸣 | Power grid operation state monitoring case |
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Application publication date: 20160525 |