CN109347072A - Intelligent low-pressure breaker of plastic casing - Google Patents
Intelligent low-pressure breaker of plastic casing Download PDFInfo
- Publication number
- CN109347072A CN109347072A CN201811188208.5A CN201811188208A CN109347072A CN 109347072 A CN109347072 A CN 109347072A CN 201811188208 A CN201811188208 A CN 201811188208A CN 109347072 A CN109347072 A CN 109347072A
- Authority
- CN
- China
- Prior art keywords
- digital signal
- current
- circuit
- voltage
- factor
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/263—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of measured values
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention provides intelligent low-pressure breaker of plastic casing, comprising: current-voltage transformer, for detecting current signal and voltage signal in breaker main circuit；Intelligent controller, current signal and voltage signal for detecting to current-voltage transformer are analyzed and issue corresponding instruction；Magnetic flow convertor, for receiving the instruction of intelligent controller and executing tripping action；Wherein intelligent controller further comprises: signal processing circuit, successively amplifies, filters and A/D conversion process to the current signal of acquisition and voltage signal respectively, exports current digital signal and voltage digital signal respectively；Digital signal processing unit respectively compares and analyzes the current digital signal of acquisition and voltage digital signal, if analysis result is exception, issues control instruction to trip circuit；Trip circuit drives magnetic flow convertor to realize open circuit after receiving control instruction.The present invention carries out automatic identification to the fault message in objective circuit in real time, realizes intelligent open circuit.
Description
Technical field
The present invention relates to breaker apparatus fields, and in particular to a kind of intelligent low-pressure breaker of plastic casing.
Background technique
With the raising of people's lives level, social production and the life of the people increasingly be unable to do without electric use,
Exactly because the reliability requirement of power supply is also higher and higher now to the great attention of electric energy, various high and low voltage electrical equipments is promoted to protect
Protective function is more perfect, and breaker of plastic casing has also obtained development at full speed as a member in low-voltage electrical apparatus.
Traditional breaker of plastic casing makes bimetal leaf using the fuel factor of load current using thermal type tripping control mode
Heated bending is deformed control tripping.Since the contour structures and thermal deformation precision of bimetal leaf are difficult to ensure, thus open circuit
Device tripping delay time is difficult to control accurately, and breaker cutout precision is not high, meanwhile, also functional incomplete disadvantage, no
It is able to satisfy the needs of modern Intelligent Low Voltage Distribution System.
Summary of the invention
In view of the above-mentioned problems, the present invention is intended to provide intelligent low-pressure breaker of plastic casing.
The purpose of the present invention is realized using following technical scheme:
Intelligent low-pressure breaker of plastic casing, comprising:
Current-voltage transformer, for detecting current signal and voltage signal in breaker main circuit；
Intelligent controller, current signal and voltage signal for detecting to the current-voltage transformer are analyzed
And issue corresponding instruction；
Magnetic flow convertor, for receiving the instruction of the intelligent controller and executing tripping action；
Wherein the intelligent controller further comprises: power module, trip circuit, signal processing circuit and digital signal
Processing unit；
The signal processing circuit respectively successively amplifies the current signal of acquisition and voltage signal, filters and A/D
Conversion process exports current digital signal and voltage digital signal to the digital signal processing unit respectively；
The digital signal processing unit respectively compares point the current digital signal of acquisition and voltage digital signal
Analysis issues control instruction to the trip circuit if analysis result is exception；
The trip circuit drives the magnetic flux after receiving the control instruction sent by the digital signal processing unit
Converter realizes open circuit；
The power module, the respectively described digital signal processing unit, the trip circuit provide power supply.
The invention has the benefit that acquiring the current signal and voltage letter of power circuit by current-voltage transformer
Number, intelligent controller in real time in the current signal and voltage signal of acquisition failure or exception information carry out automatic identification, when
Detect that magnetic flow convertor is directly driven when failure occurs cuts off rapidly circuit, intelligent level and accuracy are high.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings, but the embodiment in attached drawing is not constituted to any limit of the invention
System, for those of ordinary skill in the art, without creative efforts, can also obtain according to the following drawings
Other attached drawings.
Fig. 1 is frame construction drawing of the invention；
Fig. 2 is the frame construction drawing of intelligent controller of the present invention；
Fig. 3 is the frame construction drawing of digital signal processing unit of the present invention.
Appended drawing reference:
Current-voltage transformer 1, intelligent controller 2, magnetic flow convertor 3, digital signal processing unit 21, power module
22, trip circuit 23, signal processing circuit 24, short detection unit 211 and fault electric arc detection unit 212
Specific embodiment
In conjunction with following application scenarios, the invention will be further described.
Referring to Fig. 1, Fig. 2, a kind of intelligent low-pressure breaker of plastic casing is shown, comprising:
Current-voltage transformer 1, for detecting current signal and voltage signal in breaker main circuit；
Intelligent controller 2, current signal and voltage signal for detecting to the current-voltage transformer 1 divide
It analyses and issues corresponding instruction；
Magnetic flow convertor 3, for receiving the instruction of the intelligent controller 2 and executing tripping action；
Wherein the intelligent controller 2 further comprises: power module 22, trip circuit 23,24 and of signal processing circuit
Digital signal processing unit 21；
The signal processing circuit 24, the current signal of acquisition and voltage signal are successively amplified respectively, filter and
A/D conversion process exports current digital signal and voltage digital signal to the digital signal processing unit 21 respectively；
The digital signal processing unit 21, respectively compares the current digital signal of acquisition and voltage digital signal
Analysis issues control instruction to the trip circuit 23 if analysis result is exception；
The trip circuit 23 receives described in driving after the control instruction sent as the digital signal processing unit 21
Magnetic flow convertor 3 realizes open circuit；
The power module 22, the respectively described digital signal processing unit 21, the trip circuit 23 provide power supply electricity
Source.
Above embodiment of the present invention, intelligent low-pressure breaker of plastic casing of the present invention acquire electricity by current-voltage transformer 1
The current signal and voltage signal on line of force road, intelligent controller 2 is in real time to the failure in the current signal and voltage signal of acquisition
Or exception information carries out automatic identification, and the cutting circuit rapidly of magnetic flow convertor 3, intelligence are directly driven when detecting that failure occurs
It is high to change horizontal and accuracy.
In one embodiment, it is also connected with operation interface on the digital signal processing unit 21, is carried out for user
The setting of different setting valves；
Wherein, the setting valve include for judge current signal whether Yi Chang electric current judgment threshold, and for judging
Voltage signal whether Yi Chang voltage judgment threshold.
In one embodiment, the magnetic flow convertor 3 includes iron core, is wound with and the trip circuit 23 on iron core
The coil of connection, the both ends of iron core are respectively equipped with permanent magnet and reaction spring, suction and institute of the permanent magnet to the iron core
State that reaction spring is opposite to the direction of pull of the iron core and the former is greater than the latter, the front end of the iron core, which is equipped with, can hit open circuit
Device draw bar is to realize breaking striker.
Above embodiment of the present invention, magnetic flow convertor 3 work as modeling using the design of iron core cooperation permanent magnet and reaction spring
When case circuit breaker judges that power circuit breaks down, the attraction of iron core and permanent magnet, elastic force of the iron core in reaction spring are disconnected
Effect is lower to hit circuit breaker draw bar to cut off circuit, and reaction speed is exceedingly fast, and ensure that the breaking effect of breaker.
In one embodiment, the intelligent controller 2 further include: communication unit 25,
The communication unit 25 is connect with the signal processing circuit 24, the electricity that the signal processing circuit 24 is exported
Streaming digital signal and voltage digital signal are sent to remote terminal.
In one embodiment, the communication unit 25 is based on NB-IoT Internet of Things to the remote terminal transmission number
According to.
In one embodiment, the communication unit 25 passes through LORA cordless communication network to the remote terminal transmission
Data.
The current signal that breaker obtains is real-time transmitted to long-range end by communication unit by above embodiment of the present invention
In end, it can aid in and the circuit information where breaker is further saved and managed, wherein using Internet of Things mode
Data are acquired, can effectively utilize and set up transmission network jointly using remaining short-circuit device in application scenarios, are improved
The quality and efficiency of data transmission.
In one embodiment, the magnetic flow convertor 3 further includes connecting with the draw bar, for resetting described lead
Draw the resetting apparatus that bar realizes reset of breaker；
The communication unit 25 is also used to receive the reset instruction sent by remote terminal, and is forwarded to the reset dress
It sets；
The resetting apparatus drives draw bar to return back to reset state after receiving the reset instruction, realizes main circuit
Again it is connected.
In one embodiment, the communication unit 25 is also connect with the digital signal processing unit 21, for connecing
Receive the current threshold set information that remote terminal is sent and contrast characteristic's ginseng for judging fault electric arc in current digital signal
Number information is simultaneously loaded into the digital signal processing unit 21.
In one embodiment, the remote terminal can be mobile phone, master control computer or background server etc..
In one embodiment, electric power master control switch is additionally provided on the case for circuit breaker.
In one embodiment, the signal processing circuit 24 further comprises: current signal conditioning circuit, to from electricity
The current signal that stream voltage transformer 1 obtains is amplified, is filtered；Voltage signal conditioning circuit, to mutual from Current Voltage
The voltage signal that sensor 1 obtains is amplified, is filtered；A/D conversion circuit, by after conditioning current signal and conditioning after
Voltage signal is respectively converted into current digital signal and voltage digital signal.
In one embodiment, the power module 22 is that the operation of the intelligent controller 2 is powered, including exchange supplies
Electric mode and from charged pool power supply mode.
In one embodiment, the power module 22 is connect with the current transformer, further comprises: rectified current
Road and voltage regulator circuit, the current signal that the power module 22 exports current transformer are defeated by rectification circuit and voltage regulator circuit
Power supply out.
Above embodiment of the present invention, above-mentioned breaker of plastic casing is without additional power supply.
In one embodiment, referring to Fig. 3, the digital signal processing unit 21 further comprises:
Short detection unit 211, for carrying out real-time analysis detection to the current digital signal and digital signal,
It calculates short trouble and judges the factor, when the short trouble of calculating judges that the factor is greater than the threshold value of setting, to the trip circuit
23 issue control instruction.
In one embodiment, the short detection unit 211 calculates short trouble and judges the factor, specifically includes:
(2) first is calculated according to the three-phase voltage digital signal of acquisition respectively and judge the factor, wherein the first judgement used
Saturation are as follows:
x∈[A,B,C]
In formula, TxIndicate that the short circuit of x phase judges the factor, βx(z) the x phase voltage digital signal amplitude at z moment is indicated, M indicates institute
The sample frequency of current-voltage transformer 1 is stated, H indicates the electric voltage frequency of power circuit.
When judging that the factor is greater than the threshold value of setting there are described first, according to the three-phase current digital signal of acquisition and institute
It states first judgement factor calculating second and judges the factor, wherein use second judges saturation are as follows:
In formula, p (z) indicates that second judges the factor, and M indicates the sample frequency of the current-voltage transformer 1, and H indicates electricity
The electric voltage frequency on line of force road,WithRespectively
Indicate A phase and B phase voltage digital signalThe amplitude at moment, γA(z) z-th of sampling point moment A phase current number is indicated
The amplitude of signal；
Will acquire second judges that factor Y (z) judges the factor as the short trouble.
In one embodiment, M=10000Hz, H=50Hz, i.e., each power frequency period in each current digital signal
There are 200 sampled points.
Above embodiment of the present invention, adopt in manner just described to the current digital signal of acquisition and voltage digital signal into
Row analytical calculation judges that the factor and second judges that the factor respectively examines the Current Voltage of power circuit by calculating first
It surveys, the short trouble of power circuit can be used for quickly detecting, strong real-time, accuracy is high.
In one embodiment, the digital signal processing unit 21 further comprises:
Fault electric arc detection unit 212 is analyzed and processed the current digital signal of acquisition, to the current digital signal
In fault electric arc diagnosed, when judge fault electric arc occur when, to trip circuit 23 issue control instruction；
Wherein, the fault electric arc monitoring unit specifically includes:
(1) discrete wavelet transformation is carried out to the current digital signal of acquisition, obtains the discrete wavelet system of current digital signal
Number, and denoising is carried out to the discrete wavelet coefficient, the discrete wavelet coefficient after obtaining denoising；
(2) according to the discrete wavelet coefficients to construct eigenmatrix after the denoising of acquisition, and it is odd to carry out SVD to this feature matrix
Different value is decomposed, and arc characteristic parameter of the singular value of this feature matrix as the current digital signal is obtained；
(3) threshold value of the arc characteristic parameter and setting that will acquire is compared, when the arc characteristic parameter is greater than setting
Threshold value when, judge fault electric arc, to trip circuit 23 issue control instruction.
Above embodiment of the present invention is adopted and is judged in manner just described the fault electric arc in power circuit, passes through
The current digital signal of acquisition is handled, obtains the wavelet coefficient of current digital signal by discrete wavelet transformation first,
And it is filtered according to the wavelet coefficient of acquisition, removal generates during current digital signal acquisition or front-end processing
Noise, improve the accuracy rate of subsequent detection；Simultaneously according to the current digital signal discrete wavelet coefficient of acquisition, SVD is carried out
Singular value decomposition, and according to arc characteristic parameter of the singular value obtained as current signal is decomposed, can accurately it reflect
The feature of current digital signal provides foundation for the subsequent judgement to fault electric arc；Finally by by arc characteristic parameter into
Row compares, and accurately judges that, with the presence or absence of fault electric arc, accuracy is high.
In one embodiment, in fault electric arc detection unit 212, the current digital signal of acquisition is carried out discrete small
Wave Decomposition, and denoising is carried out to the discrete wavelet coefficient of acquisition, it specifically includes:
The current digital signal of acquisition is carried out plus time window and discrete wavelet transformation, obtain the current digital signal from
Coefficient of wavelet decomposition r is dissipated, wherein the wavelet basis used is Sym5, Decomposition order Lb=5；
Denoising is carried out to discrete wavelet transformation coefficient r, wherein the denoising function used are as follows:
Wherein,
In formula,Discrete wavelet coefficient after indicating denoising, r indicate the discrete wavelet coefficient before denoising, and ω expression is sentenced
Determining threshold value, τ indicates the standard deviation estimate of noise,Indicate the regulatory factor of setting, NsIndicate the sum of sampled point in time window.
In one embodiment, the length of time window is Ns=100, i.e., it include 100 sample point datas in time window.
Above embodiment of the present invention is pre-processed using current digital signal of the aforesaid way to acquisition, right first
Current digital signal carries out plus time window, determines pretreatment and detection data object；To the current digital signal in time window into
The variation of row discrete wavelet, and the discrete wavelet coefficient of acquisition is filtered at denoising using above-mentioned customized filter function
Reason, can accurately denoise wavelet coefficient according to noise threshold, and denoising effect is good, can be improved acquisition current digital
The accuracy of signal is laid a good foundation to be further analyzed processing to current digital signal in the judgement of consequent malfunction electric arc.
In one embodiment, in fault electric arc detection unit 212, according to the discrete wavelet coefficient after the denoising of acquisition
Construction feature matrix, and SVD singular value decomposition is carried out to this feature matrix, the singular value of this feature matrix is obtained as the electric current
The arc characteristic parameter of digital signal, specifically includes:
(1) according to the discrete wavelet coefficient sequence S (S after the denoising of the acquisition1,S2,…,SN) construction feature matrix F,
Described in eigenmatrix F constructed fuction are as follows:
In formula, F indicates eigenmatrix, 1 < i < Ns, j=Ns- i+1,
(2) SVD singular value decomposition is carried out to this feature matrix F, obtains the singular value of this feature matrix F as current digital
The feature vector of signal；
Wherein singular value decomposition function are as follows:
F=UDVT
In formula, F indicates eigenmatrix, F ∈ Sj×i, U and V are respectively the orthogonal matrix of eigenmatrix F, wherein U ∈ Sj×j,
I.e. the size of matrix U is j × j, V ∈ Si×i,Δ=diag (η1,η2,…,ηg), η1≥η2≥…≥ηg>=0,
Wherein dvag (η1,η2,…,ηg) indicate with η1,η2,…,ηgFor diagonal element, and the matrix that remaining is all 0 in addition to diagonal element,
G is the characteristic parameter dimension of setting；(the η that wherein will acquire1,η2,…,ηg) unusual value set as eigenmatrix F, i.e., it is electric
The feature vector of streaming digital signal；
(3) the arc characteristic parameter that the current digital signal is obtained according to the feature vector of current digital signal, wherein adopting
Arc characteristic parametric function are as follows:
In formula, ηvIndicate v-th of feature vector of current digital signal, Z indicates the arc characteristic ginseng of current digital signal
Number, g indicate the sum of feature vector,Indicate the average value of the unusual value set of eigenmatrix F.
In one embodiment, the length N of time windows=200, j=101, i=100.
Above embodiment of the present invention obtains the arc characteristic parameter of circuit digital signal, first root using aforesaid way
SVD singular value decomposition is carried out according to the discrete wavelet coefficient construction feature matrix of current digital signal and to it, is obtained decomposition and is obtained
Singular value as feature vector, and according to this feature vector construct current digital signal arc characteristic parameter, can solve
Certainly occur loading in some cases in the prior art or power circuit under normal operating conditions with Characteristic Contrast when arc fault
Unconspicuous problem accurately reflects the arc characteristic of current digital signal, simultaneously for breaker of plastic casing accurate judgement fault electric arc
It makes fast reaction and provides guarantee.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as analysis, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (7)
1. intelligent low-pressure breaker of plastic casing characterized by comprising
Current-voltage transformer, for detecting current signal and voltage signal in breaker main circuit；
Intelligent controller, current signal and voltage signal for detecting to the current-voltage transformer analyze concurrent
Corresponding instruction out；
Magnetic flow convertor, for receiving the instruction of the intelligent controller and executing tripping action；
Wherein the intelligent controller further comprises: power module, trip circuit, signal processing circuit and Digital Signal Processing
Unit；
The signal processing circuit, the current signal of acquisition and voltage signal are successively amplified respectively, filter and A/D conversion
Processing exports current digital signal and voltage digital signal to the digital signal processing unit respectively；
The digital signal processing unit respectively compares and analyzes the current digital signal of acquisition and voltage digital signal,
If analyzing result is exception, control instruction is issued to the trip circuit；
The trip circuit drives the magnetic flux to convert after receiving the control instruction sent by the digital signal processing unit
Device realizes open circuit；
The power module, the respectively described digital signal processing unit, the trip circuit provide power supply.
2. intelligent low-pressure breaker of plastic casing according to claim 1, which is characterized in that on the digital signal processing unit
It is also connected with operation interface, the setting of setting valve is carried out for user.
3. intelligent low-pressure breaker of plastic casing according to claim 1, which is characterized in that the magnetic flow convertor includes iron
Core is wound with the coil connecting with the trip circuit on iron core, and the both ends of iron core are respectively equipped with permanent magnet and reaction spring, institute
State permanent magnet it is opposite with direction of pull of the reaction spring to the iron core to the suction of the iron core and the former be greater than the latter,
The front end of the iron core is equipped with the striker that can hit circuit breaker draw bar to realize open circuit.
4. intelligent low-pressure breaker of plastic casing according to claim 1, which is characterized in that the intelligent controller further include:
Communication unit,
The communication unit is connect with the signal processing circuit, and the current digital signal and voltage digital signal are sent
To remote terminal, wherein the communication unit is based on NB-IoT Internet of Things to the remote terminal transmission data；Alternatively,
The communication unit passes through LORA cordless communication network to the remote terminal transmission data.
5. intelligent low-pressure breaker of plastic casing according to claim 4, which is characterized in that the magnetic flow convertor further include with
The draw bar connection, the resetting apparatus of reset of breaker is realized for resetting the draw bar；
The communication unit is also used to receive the reset instruction sent by remote terminal, and is forwarded to the resetting apparatus；
The resetting apparatus drives draw bar to return back to reset state after receiving the reset instruction, realizes main circuit again
Conducting.
6. intelligent low-pressure breaker of plastic casing according to claim 1, which is characterized in that
The digital signal processing unit further comprises:
Short detection unit calculates short for carrying out real-time analysis detection to the current digital signal and digital signal
The road breakdown judge factor is issued to the trip circuit and is controlled when the short trouble of calculating judges that the factor is greater than the threshold value of setting
System instruction；And/or
Fault electric arc detection unit is analyzed and processed the current digital signal of acquisition, to the event in the current digital signal
Barrier electric arc is diagnosed, and when judging that fault electric arc occurs, issues control instruction to trip circuit.
7. intelligent low-pressure breaker of plastic casing according to claim 6, which is characterized in that the short detection unit calculates
Short trouble judges the factor, specifically includes:
(2) first is calculated according to the three-phase voltage digital signal of acquisition respectively and judge the factor, wherein use first judges the factor
Function are as follows:
In formula, TxIndicate that the short circuit of x phase judges the factor, βx(z) the x phase voltage digital signal amplitude at z moment is indicated, M indicates the electricity
The sample frequency of voltage transformer is flowed, H indicates the electric voltage frequency of power circuit.
When judging that the factor is greater than the threshold value of setting there are described first, according to the three-phase current digital signal of acquisition and described the
One judges that the factor calculates second and judges the factor, wherein use second judges saturation are as follows:
In formula, p (z) indicates that second judges the factor, and M indicates the sample frequency of the current-voltage transformer, and H indicates power circuit
Electric voltage frequency,WithRespectively indicate A phase
With B phase voltage digital signalThe amplitude at moment, γA(z) width of z-th of sampling point moment A phase current digital signal is indicated
Value；
Will acquire second judges that factor Y (z) judges the factor as the short trouble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811188208.5A CN109347072B (en) | 2018-10-12 | 2018-10-12 | Intelligent low-pressure breaker of plastic casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811188208.5A CN109347072B (en) | 2018-10-12 | 2018-10-12 | Intelligent low-pressure breaker of plastic casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109347072A true CN109347072A (en) | 2019-02-15 |
| CN109347072B CN109347072B (en) | 2019-05-24 |
Family
ID=65308990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811188208.5A Active CN109347072B (en) | 2018-10-12 | 2018-10-12 | Intelligent low-pressure breaker of plastic casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109347072B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797236A (en) * | 2019-04-26 | 2020-02-14 | 深圳德微电技术有限公司 | Circuit breaker with fault self-checking function and self-power-off function |
| CN112928682A (en) * | 2021-03-04 | 2021-06-08 | 儒能(山东)电力科技有限公司 | Intelligent draw-out type circuit breaker |
| CN114113904A (en) * | 2021-11-30 | 2022-03-01 | 南方电网电力科技股份有限公司 | Intelligent circuit breaker and low-voltage distribution network fault positioning method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098701A (en) * | 2015-09-30 | 2015-11-25 | 重庆长安汽车股份有限公司 | Short-circuit protection circuit and method of vehicular charger |
| CN105974273A (en) * | 2016-07-26 | 2016-09-28 | 潘燕 | Power distribution network fault positioning system |
| CN107785217A (en) * | 2017-10-19 | 2018-03-09 | 武汉倍诺德开关股份有限公司 | A kind of Intelligent electronic optical pole breaker of plastic casing |
-
2018
- 2018-10-12 CN CN201811188208.5A patent/CN109347072B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098701A (en) * | 2015-09-30 | 2015-11-25 | 重庆长安汽车股份有限公司 | Short-circuit protection circuit and method of vehicular charger |
| CN105974273A (en) * | 2016-07-26 | 2016-09-28 | 潘燕 | Power distribution network fault positioning system |
| CN107785217A (en) * | 2017-10-19 | 2018-03-09 | 武汉倍诺德开关股份有限公司 | A kind of Intelligent electronic optical pole breaker of plastic casing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797236A (en) * | 2019-04-26 | 2020-02-14 | 深圳德微电技术有限公司 | Circuit breaker with fault self-checking function and self-power-off function |
| CN112928682A (en) * | 2021-03-04 | 2021-06-08 | 儒能(山东)电力科技有限公司 | Intelligent draw-out type circuit breaker |
| CN112928682B (en) * | 2021-03-04 | 2022-07-05 | 儒能(山东)电力科技有限公司 | Intelligent draw-out type circuit breaker |
| CN114113904A (en) * | 2021-11-30 | 2022-03-01 | 南方电网电力科技股份有限公司 | Intelligent circuit breaker and low-voltage distribution network fault positioning method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109347072B (en) | 2019-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109347072B (en) | Intelligent low-pressure breaker of plastic casing | |
| CN103105556B (en) | Intelligent power grid load testing and recognition method based on steady state and transient state characteristic joint matching | |
| CN107884711A (en) | Breaker method of testing and terminal | |
| CN103326469A (en) | Method and device for monitoring GOOSE communication status of intelligent substation | |
| CN204462252U (en) | A kind of intelligent electric meter control circuit | |
| CN204156226U (en) | A kind of smart jack | |
| CN111211811B (en) | Circuit breaker, circuit breaker system, and circuit breaker communication method and device | |
| CN110412346A (en) | A kind of metering type intelligent breaker based on Internet of Things | |
| EP2706732A1 (en) | Transformer substation automation system | |
| CN113644711B (en) | Management system for wireless charging of interactive mobile phone | |
| CN109346386B (en) | Intelligent low-pressure breaker of plastic casing | |
| CN109407039B (en) | Intelligent electric meter and system thereof, self-diagnosis method and fault detection method | |
| CN111007363A (en) | Transmission line fault monitoring device, method and equipment and storage medium | |
| CN211151955U (en) | Circuit breaker and circuit breaker system | |
| CN212183102U (en) | Low-voltage circuit breaker for lane controller | |
| CN113917294A (en) | Intelligent self-adaptive arc detection method based on wavelet decomposition and application device thereof | |
| CN107834311A (en) | Network interface plug-in and pull-off device, network interface insert-pull detection system and method | |
| CN112114272A (en) | Leakage current detection system and leakage current detection method for electric energy meter | |
| CN208383974U (en) | A kind of ac detector | |
| CN113162057A (en) | Intelligent ammeter box and control method thereof | |
| CN203909243U (en) | Service life test automatic control system for grounding switch electric mechanism | |
| CN111722152B (en) | Transformer winding deformation monitoring method and monitoring system | |
| CN201966699U (en) | Intelligent wireless remote power switch device | |
| CN208423934U (en) | A kind of ± 500kV DC line mode of connection automatic identification system based on remote motion signal | |
| CN219247458U (en) | Leakage protection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210012 14-17 floors, 7 Building, Yunmicheng, 19 Ningshuang Road, Yuhuatai District, Nanjing City, Jiangsu Province Patentee after: Jiayuan Technology Co.,Ltd. Address before: 210012 14-17 floors, 7 Building, Yunmicheng, 19 Ningshuang Road, Yuhuatai District, Nanjing City, Jiangsu Province Patentee before: Jiayuan Technology Co.,Ltd. Address after: 210012 14-17 floors, 7 Building, Yunmicheng, 19 Ningshuang Road, Yuhuatai District, Nanjing City, Jiangsu Province Patentee after: Jiayuan Technology Co.,Ltd. Address before: 210012 14-17 floors, 7 Building, Yunmicheng, 19 Ningshuang Road, Yuhuatai District, Nanjing City, Jiangsu Province Patentee before: JIANGSU JIAYUAN TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CB03 | Change of inventor or designer information |
Inventor after: Gu Xiongfei Inventor after: Zhang Chuanyang Inventor after: Qiao Shili Inventor before: Zhang Chuanyang Inventor before: Qiao Shili |
|
| CB03 | Change of inventor or designer information |