CN108627745A - Realize the intelligent electric energy meter and its implementation of fault electric arc detecting function - Google Patents
Realize the intelligent electric energy meter and its implementation of fault electric arc detecting function Download PDFInfo
- Publication number
- CN108627745A CN108627745A CN201810704822.6A CN201810704822A CN108627745A CN 108627745 A CN108627745 A CN 108627745A CN 201810704822 A CN201810704822 A CN 201810704822A CN 108627745 A CN108627745 A CN 108627745A
- Authority
- CN
- China
- Prior art keywords
- electric arc
- fault
- fault electric
- electric energy
- energy meter
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention is a kind of intelligent electric energy meter and its implementation for realizing fault electric arc detecting function, by voltage, current sample channel carries out real-time sampling to user load circuit, and electricity is carried out by professional metering module, electricity metering, simultaneously by the shared measure voltage ＆ current for carrying out fault electric arc of sample channel data, increase fault electric arc characteristic frequency detection module, and arc fault judgement is carried out by software algorithm, it can be to parallel arc fault, series fault arc and fault to ground electric arc are reliably detected, and do not increasing larger hardware cost, on the basis of not changing the wiring of original family, fault electric arc active report of event can be carried out by Remote Power-Meter Reading System, realize fault electric arc detection and the warning function of low-cost high-efficiency.
Description
Technical field
The present invention relates to fault electric arc detection techniques, more particularly to a kind of intelligence of achievable fault electric arc detecting function
Electric energy meter and its implementation.
Background technology
Electric arc is commonly called as ' electric spark ', is called ' sparking ', and essence is a kind of insulator by after voltage breakdown, is become by non-conductive
Conduction, and the natural phenomena emitted light and heat.Electric arc can be divided into three classes：Good arc, similar arc and fault electric arc.Good arc：Fluorescent lamp, electricity
Arc-welding, the artificial electric arc for manufacturing generation or normal operating and generating such as disjunction of mechanical switch.Similar arc：Certain equipment open
The distortion of electric current, voltage, similar with the certain characteristics of the Current Voltage of electric arc caused by dynamic or work.Fault electric arc：Fault electric arc
It is due to the originals such as insulation ag(e)ing is damaged, electrical connection loosens, there was dampness in the air, voltage and current drastically increases in electric wiring or equipment
Gas ionization electric discharge phenomena caused by causing air breakdown.（Select from GB14287.4-2014）Fault electric arc is to cause electrically
The one of the major reasons of fire, pressure, radiation, the arc root effect of the generation of simultaneous faults electric arc not only be easy to cause electrical equipment
Damage, or even can also cause human casualty accident and great economy, property loss.Fault electric arc is divided into three classes：Serial arc,
Parallel arc and over the ground electric arc.Serial arc：Arc current flows through a kind of fault electric arc loaded by protection terminating circuit.It is in parallel
Electric arc：Arc current flows through between conductor and a kind of fault electric arc in parallel with load.Electric arc over the ground：Arc current is from conductance
Body flows into a kind of fault electric arc of the earth.
The existing scheme for preventing fault electric arc from leading to accident mainly has breaker, residual current detector, temp.-measuring type electrical
Fire detector and special fault current detector.1）Breaker mainly uses electromagnetic principle to carry out overcurrent protection, protects
Shield trigger theory is generally caused by equipment or line short high current in short-term, and activation threshold value can generally reach the 5 of rated current
It is differed to 7 times or firewire electric current and neutral line current, difference reaches certain threshold value（Generally less than 30mA）Start earth leakage protective,
The parallel arc larger to portion of electrical current and over the ground electric arc have certain protective effect, and are less than activation threshold value for arc current
Parallel arc and serial arc do not have protective effect then.2）Residual current detector is similar to earth leakage protective breaker,
It generally detects the residual current of firewire and zero curve using mutual inductor, and accuracy of detection reaches 1mA, higher than earth leakage protective open circuit
Device, but it mainly can play a protective role to electric arc over the ground.3）Temp.-measuring type electrical fire-detector uses temperature sensor pair
Area to be monitored temperature is sampled, and temperature is electrical fire accident higher than threshold decision, and mainly protection has occurred and that electrical
Circuit is alarmed or cut off after fire prevents accident from further spreading, and which directly cannot be detected fault electric arc and sentence
It is disconnected.4）Fault electric arc detector is specific to parallel arc, serial arc and the detection device of electric arc over the ground, uses inspection
The distinctive 2kHz of electric arc contained in effective value and electric current is surveyed to 200kHz higher harmonic components to determine whether having
Fault electric arc generates.This method substantially can protect all types of fault electric arcs, but its needs is arranged separately in and registers one's residence always
At switch, if local judged, master switch can be caused to be cut off once there is erroneous judgement, family's power-off；If using access
Fire or other protection systems, then system cost is higher, needs independent maintenance, client's acceptance not high.Existing intelligence electric energy
Table does not have fault electric arc detection function yet.
Invention content
In order to solve shortcoming and defect existing in the prior art, the present invention provides a kind of realization fault electric arcs to detect work(
The intelligent electric energy meter and its implementation of energy.
To achieve the goals above, the present invention provides a kind of intelligent electric energy meter systems realizing fault electric arc detecting function
System, including：User load carries the intelligent electric energy meter of fault electric arc detecting function, and power consuming administrative system and user communication are set
Standby, major function flow is after the fault electric arcs such as poor contact occurs in user load, and of the invention detects work(with fault electric arc
The electric energy meter of energy detects that event occurs for fault electric arc, and passes through the fieldbus active reporting of acquiring electric energy information system to electricity
Fault warning information is sent to user by the power consuming administrative system of power office, power consuming administrative system by the customer account management platform of itself
Communication apparatus checks and debugs to electricity consumption situation in time after user is notified, warning message solution after failure discharge
It removes, power consuming administrative system eliminates alarm, or repeatedly reminds and do not debug yet, and power consuming administrative system can pass through platform management system
Household electricity is loaded by the electric energy meter with fault electric arc detecting function and is cut off by system, operation of operating a switch is carried out, to ensure electricity consumption
Safety.
Based on the intelligent electric energy meter system of above-mentioned realization fault electric arc detecting function, the present invention provides a kind of realization events
Hinder the intelligent electric energy meter of arc detection function comprising：Processing module, the electric energy metering module being electrically connected with processing module, therefore
Hinder arc characteristic frequency detection module, display, button, communication module, detection interface, data storage, with electric energy metering module company
The voltage sample and current sample connect, and the power management to modules power supply；The current sampling module and failure
Arc characteristic frequency detection module is electrically connected, and the power management includes working power and Clock battery.
Preferably, fault electric arc characteristic frequency detection module include current signal amplifier circuit, multichannel band logical
Filter and signal processing circuit, the current amplification circuit include：Resistance R1, R2, R3, R4 and amplifier U1；Described is more
Channel bandpass filter is at least No. 2 bandpass filters selected for fault electric arc, by the high frequency harmonic components of different frequent points
It is handled；The signal processing circuit uses high-speed switch to the higher hamonic wave signal shaping after bandpass filtering for digital arteries and veins
Rush signal, the CPU digital I/O ports of input processing module.
Preferably, the electric energy metering module is RN8209G model profession computation chips, which is a be used for
Measure the composite signal integrated circuits chip of the ADC+DSP of power and energy.
Preferably, the current sample is sampled using the manganese copper diverter for integrating magnetic latching relay, simultaneously
With major loop switching on function.
Preferably, that the processing module selection is STM32F103.
Preferably, the multichannel bandpass filter is used as basic filter using active band-pass filter, using 4
Switching element of the road dual-channel analog switching selector MPC509 chips as different frequency point filter, is controlled by processing module
Switch corresponding frequency point.
Preferably, the high-speed switch is SN5545.
Based on the intelligent electric energy meter of above-mentioned realization fault electric arc detecting function, the present invention provides a kind of realization failure electricity
The intelligent electric energy meter implementation method of arc detecting function, includes the following steps：
S1：Multichannel bandpass filter samples the high-frequency harmonic of specified frequency point；
S2：Judge whether high-frequency harmonic meets the requirement of setting frequency point, if high-frequency harmonic meets the requirement of setting frequency point, from meter
It measures and reads current voltage, electric current and phase-angle data in chip, if high-frequency harmonic is unsatisfactory for the requirement of setting frequency point, exit failure
Arc-detection；
S3：After reading current voltage, electric current and phase-angle data in computation chip, judge whether high-frequency harmonic reaches the duration
The requirement of T judges whether present load characteristic is fault electric arc type if high-frequency harmonic reaches the requirement of duration T, if
High-frequency harmonic is not up to the requirement of duration T, then exits fault electric arc detection；
S4：Judge whether present load characteristic is fault electric arc type, if present load characteristic is fault electric arc type, generates
Fault electric arc event, and reporting fault event data is communicated, if present load characteristic is not fault electric arc type, exit failure
Arc-detection；
S5：After communicating reporting fault event data, judge whether continuous n times failure event, if continuous n times failure thing
Part then executes power-off protection of operating a switch, if not continuous n times failure event, removes this event of failure accumulative frequency, lay equal stress on
Newly judge whether continuous several times failure event；
Duration T >=1 second, preferably 2s are to 10s；Times N >=2 time of the continuous failure event, it is excellent
It is selected as 3 times to 5 times.
Compared with prior art the beneficial effects of the present invention are：1）Electric energy meter is the necessary equipment of household electricity, is realized
Fault electric arc detecting function prevents the generation of electrical fire, need not increase fault electric arc detecting devices newly, also need not cloth again
Line and construction and installation save installation wiring cost.2）It is using existing acquiring electric energy information system and power consumption management platform
The active reporting of fault message and the interaction with Electricity customers can be achieved, to realize preventing electric fire with minimum cost
Occur.3）Based on powerful arm processor platform, can more accurately be carried out with the fault electric arc pattern of electrical circuit to being detected
Pattern-recognition and intelligent decision；4）Using professional electric energy computation chip and sampling element, it is more accurate waveform to occur to failure
Detection；5）Expansible multichannel Design of Bandpass, the different higher hamonic waves generated when fault electric arc can occur into
Row detection, to more accurately judge the generation of the fault electric arc under various patterns.
Description of the drawings
It, below will be to attached drawing needed in embodiment description in order to illustrate more clearly of technical scheme of the present invention
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, general for this field
For logical technical staff, without creative efforts, other drawings may also be obtained based on these drawings；
Fig. 1 is the intelligent electric energy meter system block diagram that the present invention realizes fault electric arc detecting function；
Fig. 2 is the intelligent electric energy meter internal functional block diagram that the present invention realizes fault electric arc detecting function；
Fig. 3 is voltage sampling circuit figure of the present invention；
Fig. 4 is manganese copper diverter structural schematic diagram of the present invention；
Fig. 5 is manganese copper diverter principle schematic of the present invention；
Fig. 6 is electric energy metering module functional block diagram of the present invention；
Fig. 7 is fault electric arc characteristic frequency detection module circuit diagram of the present invention；
Fig. 8 is data storage circuitry figure of the present invention；
Fig. 9 is working power circuit figure of the present invention；
Figure 10 is fault electric arc detection main flow chart of the present invention；
Figure 11 is fault electric arc current waveform schematic diagram of the present invention；
Figure 12 is fault electric arc current frequency domain characteristic schematic diagram of the present invention.
Specific implementation mode
Below in conjunction with attached drawing, the forgoing and additional technical features and advantages are described in more detail.
Wave feature with high frequency harmonic components when the present invention occurs for fault electric arc, devises fault electric arc feature
Frequency detection module circuit, the higher hamonic wave generated when fault electric arc occurs are detected, further according to voltage, electric current and frequency
Sampling the load characteristic of fault electric arc is recognized, the generation of failure judgement electric arc；Fault electric arc event is generated, and is passed through
Active reporting mode is uploaded to the power consuming administrative system of power office, can just be pushed to by public platform, power office's SMS platform etc.
User realizes the early warning and strick precaution of electrical fire.
The intelligent electric energy meter system block diagram of fault electric arc detecting function is realized as shown in Figure 1, including user load 21, is carried
The intelligent electric energy meter 22 of fault electric arc detecting function, power consuming administrative system 23 and user communication equipment 24, major function flow
It is after the fault electric arcs such as poor contact occurs in user load 21, the electric energy meter 22 with fault electric arc detecting function of the invention is examined
It measures fault electric arc and event occurs, and fulgurite is used to power office by the fieldbus active reporting of acquiring electric energy information system
Fault warning information is sent to user communication equipment by reason system 23, power consuming administrative system 23 by the customer account management platform of itself
24, electricity consumption situation is checked and debugged in time after user is notified, warning message releases after failure discharge, electricity consumption
Management system 23 eliminates alarm, or repeatedly reminds and do not debug yet, and power consuming administrative system 23 can pass through platform management system
Household electricity is loaded by the electric energy meter 22 with fault electric arc detecting function and is cut off, operation of operating a switch is carried out, to ensure electricity consumption
Safety.
Based on the intelligent electric energy meter system of above-mentioned realization fault electric arc detecting function, the present invention provides a kind of realization events
Hindering the intelligent electric energy meter of arc detection function, inside function block diagram is illustrated in fig. 2 shown below, including：Processing module 6, with processing mould
The electric energy metering module 3 that block 6 is electrically connected, fault electric arc characteristic frequency detection module 4, display 10, button 11, communication module 8, inspection
Interface 9, data storage 7, the voltage sample 1 and current sample 2 being connect with electric energy metering module 3 are surveyed, and is supplied to modules
The power module 5 of electricity；The current sampling module 2 is electrically connected with fault electric arc characteristic frequency detection module 4, the power supply
Management 14 includes working power 12 and Clock battery 13.The power module 5 includes working power 12, Clock battery 13 and electricity
Source control 14.
As described in Figure 3, voltage sample 1 carries out real-time sampling, divider resistance essence using electric resistance partial pressure mode to network voltage
Degree 1%, temperature drift< 50ppm.
As shown in figure 4, current sample 2 is sampled using the manganese copper diverter 16 for integrating magnetic latching relay 15, simultaneously
Switching on control function can be achieved, 16 current sample mode of manganese copper diverter has frequency response flat compared with current transformer,
The high feature of bandwidth is suitble to the application of wide bandwidth multi-frequency sampling；Manganese copper diverter 16 is when passing through resistance according to electric current in electricity
The principle that resistance both ends generate voltage is made, and principle is as shown in figure 5, when tested electric current I flows through shunt resistance Rshunt, in electricity
It hinders both ends and generates a voltage, in the case where shunt resistance is stablized, voltage relationship proportional to tested electric current.
Electric energy metering module 3 is responsible for the power after voltage and current sampling and electric energy calculates, the electric energy metering module 3 of this programme
What is selected is the RN8209G model profession computation chips of Rui Nengwei companies, which is a for measuring power and energy
The composite signal integrated circuits chip of ADC+DSP, functional block diagram are as shown in Figure 6.
As described in Figure 7, fault electric arc characteristic frequency detection module 4 include current signal amplifier circuit, multichannel band
Bandpass filter and signal processing circuit, the current amplification circuit include：Resistance R1, R2, R3, R4 and amplifier U1；Described
Multichannel bandpass filter is 2 tunnels selected for fault electric arc or multichannel bandpass filter（The design is No. 4 bandpass filters
Design, can be extended to 8 tunnels according to Site Detection situation）, the high frequency harmonic components of different frequent points are handled, then by signal
Processing module 6 is sent into after reason circuit shaping in a manner of impulse train into line program processing and the pattern-recognition of fault electric arc and is sentenced
It is disconnected；The multichannel bandpass filter of this programme is used as basic filter using active band-pass filter, using 4 road dual-channel analogs
Switching element of the switching selector MPC509 chips as different frequency point filter switches corresponding frequency by processing module control
Point.Signal processing circuit uses SN5545 high-speed switches to believe the higher hamonic wave signal shaping after bandpass filtering for digit pulse
Number, the CPU digital I/O ports of input processing module.
Processing module 6 is made of 32 ARM chips and peripheral circuit, and the processing task of entire circuit is responsible for；This programme
Processing module 6 MCU select ST 32 arm processor STM32F103 of company, based on ARM@Cortex TM-M3 kernels,
Breathe out looking angry bus structures；Dma controller, monocycle multiplying order, hardware division instruction；The 90DMIPs speeds of service, 72MHz dominant frequency
The CPU of operation；The FLASH of the SRAM of 6K bytes, 32K byte；2 16 Channel 12-Bit analog-digital converters, the conversion time of 1 μ S
；High speed communication mouth：USB、USATR、CAN、SPI、I2C ；It is low-power consumption mode with arousal function, interior RC oscillator, built-in multiple
Position circuit；Super low-power consumption, 2 μ A of typical electricity consumption value under standby mode；It is fast with arithmetic speed, the features such as low-power consumption.
Data store 7 modules and are responsible for storing electric energy and parameter information；Storage circuit is mainly made of EEPROM, memory space
256kb, interface are I2C buses, and data storage circuitry figure is as shown in Figure 8.
8 communication module of communication module is used using three kinds of RS485, far infrared and narrowband carrier communication interfaces, carrier communication
Other communication modules accesses such as pluggable communication module mode accesses, and compatibility is wireless, are responsible for RS485, far infrared and narrowband electricity
The communication function of the modes such as power carrier wave is realized.
It detects interface 9 and realizes the detection signal of electric energy error data and the output work of other seconds signals or period stealing signal
Energy.
Show that 10 modules and 11 module of button are the man-machine interactive interfaces of equipment, be responsible for display parameter data and turn over screen etc. it is defeated
Enter output function；Display 10 uses segment code type LCD liquid crystal displays, and 8 data shows, and decimal point can configure, can show voltage,
The instantaneous flows such as electric current, power, current electric quantity and history electricity, date-time etc.；Button 11 uses Micro-touch switch, mainly turns over screen
Button, programming button and detection three kinds of buttons of button of uncapping.
Working power 12 provides the various analog or digital power supplys of the needs such as 12V, 5V, 3.3V for whole equipment；Work electricity
Using Industrial Frequency Transformer as main power source, the output of three tunnels provides electric energy metering module working power, all the way at offer all the way in source 12
Module and other circuit work powers are managed, in addition RS485 isolated power supplies are provided all the way.Working power circuit figure is as shown in Figure 9.
Clock battery 13 is the reserve battery after power down, provides real-time clock and power down is shown etc. power supply；Clock electricity
Pond 13 uses ER14250 lithium ion batteries, capacity 1.2Ah, it is possible to provide equipment Clock battery and display work(under power-down state
Can, power down is less than 25 μ A, can maintain clock road work 5 years or more under power-down state, power-up state 15 years or more.
14 module of power management is responsible for the electro-detection up and down and standby usage power supply that electric power management circuit is responsible for 220V alternating currents
Switching.
Based on the intelligent electric energy meter of above-mentioned realization fault electric arc detecting function, a kind of realization failure is present embodiments provided
The implementation method of the intelligent electric energy meter of arc detection function includes the following steps as shown in Figure 10：
S1：Multichannel bandpass filter samples the high-frequency harmonic of specified frequency point (F1, F2 ... ... Fn), the specified frequency point
Number is consistent with the way of multichannel bandpass filter, using No. 4 bandpass filters in the present embodiment, it is therefore intended that frequency
Point be F1, F2, F3, F4, such as：Take F1=5k, F2=10k, F3=20k, F4=20k；
S2：Judge whether high-frequency harmonic meets setting frequency point（F1, F2, F3, F4）Requirement, if high-frequency harmonic meet setting frequency point
Requirement, then current voltage, electric current and phase-angle data are read from computation chip, if high-frequency harmonic is unsatisfactory for wanting for setting frequency point
It asks, then exits fault electric arc detection；
S3：After reading current voltage, electric current and phase-angle data in computation chip, judge whether high-frequency harmonic reaches the duration
The requirement of T（T >=1 second, such as：T=2 second）If high-frequency harmonic reaches the requirement of duration T, whether present load characteristic is judged
For fault electric arc type fault electric arc detection is exited if high-frequency harmonic is not up to the requirement of duration T；
S4：Judge whether present load characteristic is fault electric arc type, if present load characteristic is fault electric arc type, generates
Fault electric arc event, and reporting fault event data is communicated, if present load characteristic is not fault electric arc type, exit failure
Arc-detection；
S5：After communicating reporting fault event data, judge whether continuous n times failure event（N >=2 time, such as：N=3 time）If
Continuous n times failure event, then execute power-off protection of operating a switch, if not continuous n times failure event, removes this failure
Event accumulative frequency, and judge whether continuous several times failure event again.
Several fault electric arc characteristics and discriminant approach：（1）Parallel arc：Fault electric arc characteristic frequency detection module detects
High-frequency harmonic content；Electric current is mutated than normal current to be increased；（2）Serial arc：Fault electric arc characteristic frequency detection module detects
To high-frequency harmonic content；Electric current is not mutated than normal current or variation is little；（3）Electric arc over the ground：Fault electric arc characteristic frequency
Detection module detects high-frequency harmonic content；Neutral line current is differed with firewire current differential, and difference is more than threshold value；Its fault electric arc
Current waveform schematic diagram is as shown in figure 11, and fault electric arc current frequency domain characteristic schematic diagram is as shown in figure 12.
The present invention carries out real-time sampling by voltage, current sample channel to user load circuit, and by professional metering module
Electricity, electricity metering are carried out, while by the shared measure voltage ＆ current for carrying out fault electric arc of sample channel data, increasing failure
Arc characteristic frequency detection module 4, and arc fault judgement is carried out by software algorithm, it can be to parallel arc fault, series connection event
Barrier electric arc and fault to ground electric arc are reliably detected, and are not increasing larger hardware cost, do not change original family's wiring
On the basis of, fault electric arc active report of event is carried out to power office's management information system of power-consuming using Remote Power-Meter Reading System
23, realize fault electric arc detection and the warning function of low-cost high-efficiency.
Embodiment described above, only specific implementation mode of the invention, to illustrate technical scheme of the present invention, rather than
It is limited, scope of protection of the present invention is not limited thereto, although having been carried out with reference to the foregoing embodiments to the present invention detailed
Illustrate, it will be understood by those of ordinary skill in the art that：Any one skilled in the art the invention discloses
In technical scope, it can still modify to the technical solution recorded in previous embodiment or variation can be readily occurred in, or
Person's equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make corresponding technical solution
Essence is detached from the spirit and scope of technical solution of the embodiment of the present invention, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of intelligent electric energy meter for realizing fault electric arc detecting function, it is characterised in that：Including processing module, with processing module
The electric energy metering module of electrical connection, fault electric arc characteristic frequency detection module, display, button, communication module detect interface, number
According to storage, the voltage sample and current sample being connect with electric energy metering module, and the power module to modules power supply；Institute
The current sampling module stated is electrically connected with fault electric arc characteristic frequency detection module, the power module include working power,
Clock battery and power management.
2. a kind of intelligent electric energy meter for realizing fault electric arc detecting function according to claim 1, it is characterised in that：
Fault electric arc characteristic frequency detection module includes current signal amplifier circuit, multichannel bandpass filter and signal processing circuit,
The current amplification circuit includes：Resistance R1, R2, R3, R4 and amplifier U1；The multichannel bandpass filter is for event
At least No. 2 bandpass filters for hindering electric arc selection, the high frequency harmonic components of different frequent points are handled；The signal processing
Circuit uses high-speed switch to the higher hamonic wave signal shaping after bandpass filtering for digital pulse signal, input processing module
CPU digital I/O ports.
3. a kind of intelligent electric energy meter for realizing fault electric arc detecting function according to claim 1, it is characterised in that：It is described
Electric energy metering module be RN8209G model profession computation chips.
4. a kind of intelligent electric energy meter for realizing fault electric arc detecting function according to claim 1, it is characterised in that：It is described
Current sample using integrate magnetic latching relay manganese copper diverter sampled, simultaneous with major loop switching on function.
5. a kind of intelligent electric energy meter for realizing fault electric arc detecting function according to claim 1, it is characterised in that：It is described
Processing module select be STM32F103.
6. a kind of intelligent electric energy meter for realizing fault electric arc detecting function according to claim 2, it is characterised in that：It is described
Multichannel bandpass filter using active band-pass filter as basic filter, using 4 road dual-channel analogs switch selections
Switching element of the device MPC509 chips as different frequency point filter switches corresponding frequency point by processing module control.
7. a kind of intelligent electric energy meter for realizing fault electric arc detecting function according to claim 2, it is characterised in that：It is described
High-speed switch be SN5545.
8. a kind of implementation method of intelligent electric energy meter that realizing fault electric arc detecting function, includes the following steps：
S1：Multichannel bandpass filter samples the high-frequency harmonic of specified frequency point；
S2：Judge whether high-frequency harmonic meets the requirement of setting frequency point, if high-frequency harmonic meets the requirement of setting frequency point, from meter
It measures and reads current voltage, electric current and phase-angle data in chip, if high-frequency harmonic is unsatisfactory for the requirement of setting frequency point, exit failure
Arc-detection；
S3：After reading current voltage, electric current and phase-angle data in computation chip, judge whether high-frequency harmonic reaches the duration
The requirement of T judges whether present load characteristic is fault electric arc type if high-frequency harmonic reaches the requirement of duration T, if
High-frequency harmonic is not up to the requirement of duration T, then exits fault electric arc detection；
S4：Judge whether present load characteristic is fault electric arc type, if present load characteristic is fault electric arc type, generates
Fault electric arc event, and reporting fault event data is communicated, if present load characteristic is not fault electric arc type, exit failure
Arc-detection；
S5：After communicating reporting fault event data, judge whether continuous n times failure event, if continuous n times failure thing
Part then executes power-off protection of operating a switch, if not continuous n times failure event, removes this event of failure accumulative frequency, lay equal stress on
Newly judge whether continuous several times failure event.
9. a kind of implementation method of intelligent electric energy meter for realizing fault electric arc detecting function according to claim 8, special
Sign is：Duration T >=1 second.
10. a kind of implementation method of intelligent electric energy meter for realizing fault electric arc detecting function according to claim 8, special
Sign is：Times N >=2 time of the continuous failure event.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810704822.6A CN108627745A (en) | 2018-07-02 | 2018-07-02 | Realize the intelligent electric energy meter and its implementation of fault electric arc detecting function |
| CN201811156944.2A CN109142832A (en) | 2018-07-02 | 2018-09-30 | Realize the intelligent electric energy meter and its implementation of fault electric arc detecting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810704822.6A CN108627745A (en) | 2018-07-02 | 2018-07-02 | Realize the intelligent electric energy meter and its implementation of fault electric arc detecting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108627745A true CN108627745A (en) | 2018-10-09 |
Family
ID=63688569
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810704822.6A Pending CN108627745A (en) | 2018-07-02 | 2018-07-02 | Realize the intelligent electric energy meter and its implementation of fault electric arc detecting function |
| CN201811156944.2A Pending CN109142832A (en) | 2018-07-02 | 2018-09-30 | Realize the intelligent electric energy meter and its implementation of fault electric arc detecting function |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811156944.2A Pending CN109142832A (en) | 2018-07-02 | 2018-09-30 | Realize the intelligent electric energy meter and its implementation of fault electric arc detecting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN108627745A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342904A (en) * | 2018-12-04 | 2019-02-15 | 珠海格力电器股份有限公司 | Arc fault detection and early warning method and device |
| CN109633394A (en) * | 2019-01-21 | 2019-04-16 | 安徽升隆电气有限公司 | A kind of arc detector |
| CN110907736A (en) * | 2019-12-06 | 2020-03-24 | 浩云科技股份有限公司 | Electrical safety monitoring system with multi-path electrical parameter monitoring and multi-path ignition detection |
| CN111458599A (en) * | 2020-04-16 | 2020-07-28 | 福州大学 | Series arc fault detection method based on one-dimensional convolutional neural network |
| CN112345890A (en) * | 2019-08-07 | 2021-02-09 | 青岛鼎信通讯股份有限公司 | Composite detection circuit device for fault arc and current detection |
| CN112904228A (en) * | 2021-01-25 | 2021-06-04 | 国网江苏省电力有限公司检修分公司 | Secondary circuit short-circuit fault arc identification method based on electro-optical information composite criterion |
| CN113049043A (en) * | 2021-03-23 | 2021-06-29 | 深圳友讯达科技股份有限公司 | Smart meter box sensing method and device based on low-voltage centralized meter reading local communication |
| CN113311361A (en) * | 2021-06-05 | 2021-08-27 | 温州理工学院 | Multi-functional wisdom power consumption monitor terminal |
| CN113791374A (en) * | 2021-09-16 | 2021-12-14 | 国网福建省电力有限公司营销服务中心 | Electric energy meter running state remote evaluation method based on component comparison |
| CN114878991A (en) * | 2022-06-01 | 2022-08-09 | 广州小鹏汽车科技有限公司 | Arc detection circuit, battery pack, and arc detection method |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346687B (en) * | 2019-07-17 | 2022-04-12 | 南京伊科诺电气科技有限公司 | Intelligent socket with power failure fault recording function |
| CN111077365A (en) * | 2019-12-31 | 2020-04-28 | 河南省中原智能电气科技有限公司 | Multifunctional instrument |
| CN113466550A (en) * | 2021-08-11 | 2021-10-01 | 国网山西省电力公司 | Electric energy meter |
| CN113655427A (en) * | 2021-09-09 | 2021-11-16 | 国网上海市电力公司 | Automatic fault reporting method and system for metering equipment |
| KR20240074505A (en) * | 2022-11-21 | 2024-05-28 | 이성호 | arc detection system |
| CN116073521A (en) * | 2023-02-28 | 2023-05-05 | 浙江兆芯电气科技有限公司 | Arc extinguishing type intelligent safe electricity utilization device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1179213C (en) * | 1997-08-14 | 2004-12-08 | 亨德里机械工厂 | Electric arc monitoring systems |
| US7570465B2 (en) * | 2007-12-19 | 2009-08-04 | Eaton Corporation | Industrial arc fault circuit interrupter and method of detecting arcing conditions |
| CN101696986B (en) * | 2009-10-26 | 2012-06-13 | 吴为麟 | Fault arc detection method and protection device adopting same |
| CN101706527B (en) * | 2009-10-30 | 2012-01-04 | 西安交通大学 | Method for detecting arc faults based on time-frequency characteristics of high-frequency current component |
| CN102749533A (en) * | 2012-04-23 | 2012-10-24 | 华侨大学 | Low-voltage arc fault detection method |
| US9366716B2 (en) * | 2013-05-23 | 2016-06-14 | Pentair Thermal Management Llc | Sub-harmonic arc fault detection system and method |
| EP2806518B1 (en) * | 2013-05-24 | 2021-01-27 | Delta Electronics (Thailand) Public Co., Ltd. | Serial arc detection based on harmonic content of DC current signal |
| CN207248992U (en) * | 2017-08-31 | 2018-04-17 | 宁波三星医疗电气股份有限公司 | A kind of electric meter system for detecting family's arc fault |
| CN208459533U (en) * | 2018-07-02 | 2019-02-01 | 华立科技股份有限公司 | Realize the intelligent electric energy meter of fault electric arc detecting function |
-
2018
- 2018-07-02 CN CN201810704822.6A patent/CN108627745A/en active Pending
- 2018-09-30 CN CN201811156944.2A patent/CN109142832A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342904A (en) * | 2018-12-04 | 2019-02-15 | 珠海格力电器股份有限公司 | Arc fault detection and early warning method and device |
| CN109633394A (en) * | 2019-01-21 | 2019-04-16 | 安徽升隆电气有限公司 | A kind of arc detector |
| CN112345890A (en) * | 2019-08-07 | 2021-02-09 | 青岛鼎信通讯股份有限公司 | Composite detection circuit device for fault arc and current detection |
| CN112345890B (en) * | 2019-08-07 | 2022-10-21 | 青岛鼎信通讯股份有限公司 | Composite detection circuit device for fault arc and current detection |
| CN110907736A (en) * | 2019-12-06 | 2020-03-24 | 浩云科技股份有限公司 | Electrical safety monitoring system with multi-path electrical parameter monitoring and multi-path ignition detection |
| CN111458599A (en) * | 2020-04-16 | 2020-07-28 | 福州大学 | Series arc fault detection method based on one-dimensional convolutional neural network |
| CN112904228A (en) * | 2021-01-25 | 2021-06-04 | 国网江苏省电力有限公司检修分公司 | Secondary circuit short-circuit fault arc identification method based on electro-optical information composite criterion |
| CN113049043A (en) * | 2021-03-23 | 2021-06-29 | 深圳友讯达科技股份有限公司 | Smart meter box sensing method and device based on low-voltage centralized meter reading local communication |
| CN113311361A (en) * | 2021-06-05 | 2021-08-27 | 温州理工学院 | Multi-functional wisdom power consumption monitor terminal |
| CN113791374A (en) * | 2021-09-16 | 2021-12-14 | 国网福建省电力有限公司营销服务中心 | Electric energy meter running state remote evaluation method based on component comparison |
| CN113791374B (en) * | 2021-09-16 | 2024-03-12 | 国网福建省电力有限公司营销服务中心 | Remote evaluation method for operation state of electric energy meter by element comparison |
| CN114878991A (en) * | 2022-06-01 | 2022-08-09 | 广州小鹏汽车科技有限公司 | Arc detection circuit, battery pack, and arc detection method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109142832A (en) | 2019-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108627745A (en) | Realize the intelligent electric energy meter and its implementation of fault electric arc detecting function | |
| CN208459533U (en) | Realize the intelligent electric energy meter of fault electric arc detecting function | |
| CN104374964A (en) | Electric energy meter capable of measuring residual currents | |
| CN108550244B (en) | Safety grounding monitoring alarm device with multiple channels | |
| CN104638768A (en) | Intelligent power distribution security control terminal based on residential electricity consumption | |
| CN208689459U (en) | A kind of automatic Temperature and Humidity Control protection data acquisition device of high-tension switch cabinet | |
| CN110620434A (en) | Block terminal based on intelligent monitoring | |
| CN205377094U (en) | Special block terminal of smart power grids | |
| CN206922507U (en) | A kind of intelligent integrated switch board | |
| CN110676729B (en) | Terminal block terminal of intelligence | |
| CN209657112U (en) | A kind of railway computer room comprehensively monitoring protection system | |
| CN208421132U (en) | A kind of current temperature and On-line Fault monitor | |
| CN111796205A (en) | AC220V loop electric safety control method and system | |
| CN209069996U (en) | A kind of intelligent electric energy meter having voltage dip monitoring function | |
| CN208939562U (en) | A kind of Switching Power Supply that can prevent line anomalies short-circuit fire | |
| CN210608696U (en) | Block terminal based on intelligent monitoring | |
| CN105467197A (en) | Online monitoring device of integrated lightning arrester | |
| CN213780701U (en) | Internal environment management and control system of distribution box | |
| CN205104995U (en) | Power surge protector's control and high -temperature warning system | |
| CN210608222U (en) | Terminal block terminal of intelligence | |
| CN114079259A (en) | Protective device | |
| CN207380175U (en) | A kind of intelligence small current system earthing line selecting device | |
| CN205911829U (en) | Miniature circuit breaker who possesses temperature measurement function | |
| Lu et al. | Substation equipment temperature monitoring system design based on self-powered wireless temperature sensors | |
| CN112666862A (en) | Internal environment management and control system and method for distribution box |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181009 |
|
| WD01 | Invention patent application deemed withdrawn after publication |