CN108562785A - A kind of wireless networking formula multi-functional counter - Google Patents

A kind of wireless networking formula multi-functional counter Download PDF

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Publication number
CN108562785A
CN108562785A CN201810031460.9A CN201810031460A CN108562785A CN 108562785 A CN108562785 A CN 108562785A CN 201810031460 A CN201810031460 A CN 201810031460A CN 108562785 A CN108562785 A CN 108562785A
Authority
CN
China
Prior art keywords
module
sampling
formula multi
wireless networking
wireless
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810031460.9A
Other languages
Chinese (zh)
Inventor
武永伟
高玉强
王金科
罗涛
王希波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Power Co Huixian Power Supply Co
State Grid Corp of China SGCC
Xinxiang Power Supply Co of State Grid Henan Electric Power Co Ltd
Original Assignee
Henan Power Co Huixian Power Supply Co
State Grid Corp of China SGCC
Xinxiang Power Supply Co of State Grid Henan Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henan Power Co Huixian Power Supply Co, State Grid Corp of China SGCC, Xinxiang Power Supply Co of State Grid Henan Electric Power Co Ltd filed Critical Henan Power Co Huixian Power Supply Co
Priority to CN201810031460.9A priority Critical patent/CN108562785A/en
Publication of CN108562785A publication Critical patent/CN108562785A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/2506Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
    • G01R19/2509Details concerning sampling, digitizing or waveform capturing

Abstract

The present invention relates to a kind of wireless networking formula multi-functional counters, belong to electronic metering equipment field.It is characterized in that the equipment includes:Active electric current mutual inductor, sampling conditioning module, LCD MODULE, wireless transmitting unit, electric discharge trigger module.The present invention compared with the prior art, has the following advantages:1, high-precision, the high-speed sampling present invention use active electric current mutual inductor, carry out microampere order sampling to arrester leakage current, resolution ratio is 1 microampere;Sampling rate reaches 200 points/cycle, meets the needs of arrester ground leakage current waveform sampling.2, the analog quantity that good application effect, the highly practical present invention are acquired only there are one, in-situ digitalization, link is few, composition error is very small, applied waveforms method for feature analysis can effectively arrester operating status under electric property, can auxiliary repair and intelligence.

Description

A kind of wireless networking formula multi-functional counter
Technical field
The present invention relates to a kind of wireless networking formula multi-functional counters, belong to electronic metering equipment field.
Background technology
Arrester is the important high-tension apparatus of substation, if hidden danger cannot be investigated out in time after failure, it is possible to can draw Play large-scale failure.The counter of electric system at present only has arrester electric leakage total current to show and discharge the function of counting, and rises not To the effect being monitored to arrester operating status.The arrester on-line monitoring system of actual motion mainly has leakage current mutual Four sensor, voltage transformer and signal processing unit, monitoring backstage, communication and current supply circuit major part compositions.Electric current is believed It number is obtained from the ground wire of arrester by leakage current transformer, A/D is converted to digital signal, is sent after the processing of transmission circuit Enter signal processing unit;Voltage signal introduces 5A/100V signals from the secondary side of PT, and signal processing unit is introduced by plain conductor The signal of 5A/100V is converted into the low power analog signal that amplitude is less than 10V, is converted by A/D by included voltage transformer For digital signal, it is also fed into signal processing unit;Carry out total current, current in resistance property, capacity current, dielectric loss angle(Ф)Etc. parameters It calculates.This monitoring method is mainly to reflect the operating status of arrester by monitoring the variation tendency of resistive current component, Signal is more from the final link that calculates is collected, and causes arrester on-line monitoring composition error excessive, cannot be accurate in practical application Reflect the actual motion state of arrester.The operating condition of arrester is complicated, influences the air of arrester electric leakage total current variation The natural environments Parameters variation such as pressure, humiture is violent, often results in sampled data and the comparativity with reference to data is poor.Online prison The important means as repair based on condition of component is surveyed, the on-Line Monitor Device run at present cannot reach the requirement of repair based on condition of component, application Value and significance is little.
Invention content
The monitoring running state situation of function and arrester in view of current electric system counter, does not occur also in the market Wireless networking formula multi-functional counter.In this background, wireless networking formula multi-functional counter of the present invention realizes a kind of new The electronic type discharge counter of type can realize that wireless program-controlled waveform sampling, data are sent automatically, and thunderbolt is reported and submitted automatically.
A kind of wireless networking formula multi-functional counter, which is characterized in that including:Active electric current mutual inductor, sampling conditioning mould Block, LCD MODULE, wireless transmitting unit, electric discharge trigger module;The transformer induced arrester ground of active electric current is let out Leakage current signal;The sampling conditioning module samples the leakage current signal sensed and automatically generates corresponding data Packet;The LCD MODULE calculates equivalent current values, and instant playback comes out;The wireless transmitting unit is according to regulation Data format reports and submits data packet;Electric discharge trigger module action after equivalent current values are out-of-limit.
Preferably, in the present invention, the active electric current mutual inductor is by an internal diameter 18mm, outer diameter 42mm, high 12mm, circle Number is 2000 Rogowski coil, annular core, two-layer screen layer form.
Preferably, in the present invention, the sampling conditioning module, by one group of protection circuit, A/D conversion modules, one A Logical processing unit, a conditioning control unit composition.
Preferably, in the present invention, the LCD MODULE calculates control list by one group of Logical processing unit, one Member, one piece of liquid crystal display die set composition.
Preferably, in the present invention, the wireless transmitting unit, by one group of wireless transmitter module, one group of trunk module, one Antenna composition.
Preferably, in the present invention, the electric discharge trigger module is made of a counter, a trigger.
Advantageous effects of the present invention:
1, high-precision high-speed samples
The present invention uses active electric current mutual inductor, carries out microampere order sampling to arrester leakage current, meets the normal of arrester Usual tens microamperes to one milliampere of the resolution ratio of leakage current under operating mode over the ground needs;Sampling rate reaches 200 points/cycle, Meet the needs of arrester ground leakage current waveform sampling.
2, good application effect, highly practical
There are one the analog quantitys that the present invention is acquired, in-situ digitalization, compares existing apparatus and uses current in resistance property variation tendency Method, link is few, and composition error is very small, using wave f orm analysis method, can effectively reflect the electricity under the operating status of arrester Gas performance can assist monitoring running state and the intelligence of arrester.
Description of the drawings
Fig. 1 is wireless networking formula multi-functional counter functional block diagram proposed by the invention.
Specific implementation mode
The functional block diagram of wireless networking formula multi-functional counter proposed by the invention is as shown in Figure 1, include:
Active electric current mutual inductor 1 samples for the leakage current to arrester ground;
Conditioning module 2 is sampled, A/D mutual inductor secondary side signals simultaneously sample;
LCD MODULE 3, Equivalent Calculation current value, and be shown on liquid crystal display;
Wireless transmitting unit 4, according to the data format of regulation to backstage transmission data packet;
Discharge trigger module 5, is triggered when arrester discharges over the ground, to backstage transmission data.
A kind of specific wireless networking formula multi-functional counter of the present invention, which is characterized in that including:Active electric current mutual inductance Device, sampling conditioning module, LCD MODULE, wireless transmitting unit, electric discharge trigger module;The active electric current mutual inductor is by one A internal diameter 18mm, outer diameter 42mm, high 12mm, the number of turns is 2000 Rogowski coil, annular core, two-layer screen layer form, For incuding arrester ground leakage current signal;The sampling conditioning module is by one group of protection circuit, an A/D modulus of conversion Block, a Logical processing unit, a conditioning control unit composition, simultaneously for the leakage current signal sampling to sensing Automatically generate corresponding data packet;The LCD MODULE is by one group of Logical processing unit, a calculation control unit, one block of liquid Brilliant display module composition, for calculating equivalent current values, and instant playback comes out;The wireless transmitting unit is wireless by one group Transmitting module, one group of trunk module, an antenna composition, for reporting and submitting data packet according to the data format of regulation;The electric discharge Trigger module is made of a counter, a trigger, for the action after equivalent current values are out-of-limit.
Active electric current mutual inductor technology of the present invention, not only sensitivity is relatively high, and precision is high, the linearity Good, stability, anti-interference also have large increase.Counter attaches equipment as the important of arrester, upgrades to it and changes In generation, will play the intelligence of power grid very positive effect.For the repair based on condition of component of arrester, wave f orm analysis method is mesh Preceding technological means the most advanced is allowed to be intelligent repair based on condition of component service and expire by the electronization to counter The needs that sufficient thunderbolt is counted, analyzed, truly meet the needs of arrester repair based on condition of component.It timely and effective can scent a hidden danger, The generation of accident is avoided, Operation of Electric Systems safety is ensured, improves the reliability of power supply.Not only safety is improved, but also is reached The purpose of saving.The control and transmission of data, as channel, need not be laid with special communication channel using Radio Link.Wirelessly Control and transmission data signal pass through special conditioning, can meet the need discontinuously communicated under substation's complex electromagnetic environment It wants.The transformer induced signal in-situ digitalization arrived of active electric current, error are small.The Analysis of electric performance of arrester is used and is compared Intuitive wave f orm analysis method, abandons current in resistance property analysis of trend method for a long time.Not enchashment field PT secondary sides electricity The problem of pressure signal, voltage transformer phase " offset ", is just not present, caused by plain conductor relatively long distance transmits voltage signal Problem of pressure drop is also just not present.One channel gathered data, avoid two channels caused by during data operation due to Caused by chip processing speed is inconsistent " drift ".Active electric current mutual inductor and sampling module are integrated in counter, entire to fill Set does not have any connection with the primary system of power grid, does not introduce the risk of new " hidden danger ".The cloth of substation higher-pressure region is not changed Office, does not influence the neat and harmony of substation.The function of realizing arrester repair based on condition of component has established the detection of realization intellectual status Basis.Simultaneously reduce to a certain degree maintenance, O&M operating personnel workload, can give maintenance, maintenance work targeting Property relatively reliable foundation is provided, there is certain directive significance.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications can be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.Obviously, those skilled in the art can be to the present invention Carry out various modification and variations without departing from the spirit and scope of the present invention.If in this way, these modifications and changes of the present invention Within the scope of the claims of the present invention and its equivalent technology, then the intent of the present invention exists comprising these modification and variations It is interior.

Claims (6)

1. a kind of wireless networking formula multi-functional counter, which is characterized in that including:Active electric current mutual inductor, sampling conditioning module, LCD MODULE, wireless transmitting unit, electric discharge trigger module;The transformer induced arrester ground leakage electricity of active electric current Flow signal;The sampling conditioning module samples the leakage current signal sensed and automatically generates corresponding data packet;Institute It states LCD MODULE and calculates equivalent current values, and instant playback comes out;The wireless transmitting unit according to regulation data Format reports and submits data packet;Electric discharge trigger module action after equivalent current values are out-of-limit.
2. a kind of wireless networking formula multi-functional counter according to claim 1, it is characterised in that:The active electric current is mutual Sensor is by an internal diameter 18mm, outer diameter 42mm, high 12mm, Rogowski coil that the number of turns is 2000, annular core, two layers of shielding Layer composition.
3. a kind of wireless networking formula multi-functional counter according to claim 1, it is characterised in that:The sampling improves mould Block is made of one group of protection circuit, an A/D conversion module, a Logical processing unit, a conditioning control unit.
4. a kind of wireless networking formula multi-functional counter according to claim 1, it is characterised in that:The liquid crystal display Module is made of one group of Logical processing unit, a calculation control unit, one piece of liquid crystal display die set.
5. a kind of wireless networking formula multi-functional counter according to claim 1, it is characterised in that:The wireless transmission list Member is made of one group of wireless transmitter module, one group of trunk module, an antenna.
6. a kind of wireless networking formula multi-functional counter according to claim 1, it is characterised in that:The electric discharge trigger mode Block is made of a counter, a trigger.
CN201810031460.9A 2018-01-12 2018-01-12 A kind of wireless networking formula multi-functional counter Pending CN108562785A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810031460.9A CN108562785A (en) 2018-01-12 2018-01-12 A kind of wireless networking formula multi-functional counter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810031460.9A CN108562785A (en) 2018-01-12 2018-01-12 A kind of wireless networking formula multi-functional counter

Publications (1)

Publication Number Publication Date
CN108562785A true CN108562785A (en) 2018-09-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112924898A (en) * 2020-12-30 2021-06-08 广东电网有限责任公司电力科学研究院 Inside full current measuring device of metal oxide arrester
CN113049983A (en) * 2021-03-12 2021-06-29 广西电网有限责任公司电力科学研究院 Lightning arrester leakage current non-contact wireless monitoring system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204287331U (en) * 2014-05-29 2015-04-22 国家电网公司 Arrester wireless monitoring sensor
CN105223401A (en) * 2014-07-01 2016-01-06 辉县市电业局 Device is sent in the active collection of arrester ground current signal and wireless change

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204287331U (en) * 2014-05-29 2015-04-22 国家电网公司 Arrester wireless monitoring sensor
CN105223401A (en) * 2014-07-01 2016-01-06 辉县市电业局 Device is sent in the active collection of arrester ground current signal and wireless change

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112924898A (en) * 2020-12-30 2021-06-08 广东电网有限责任公司电力科学研究院 Inside full current measuring device of metal oxide arrester
CN113049983A (en) * 2021-03-12 2021-06-29 广西电网有限责任公司电力科学研究院 Lightning arrester leakage current non-contact wireless monitoring system

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Application publication date: 20180921

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