CN109521284A - Three-phase electricity power failure detection method based on dual factors algorithm - Google Patents
Three-phase electricity power failure detection method based on dual factors algorithm Download PDFInfo
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- CN109521284A CN109521284A CN201811245053.4A CN201811245053A CN109521284A CN 109521284 A CN109521284 A CN 109521284A CN 201811245053 A CN201811245053 A CN 201811245053A CN 109521284 A CN109521284 A CN 109521284A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention discloses a kind of three-phase electricity power failure detection methods based on dual factors algorithm, comprising steps of S1: obtaining and press the superimposed three-phase electricity voltage waveform data of setting ratio；S2: data accessed in step S1 are input in CPU, phase shortage information is detected using dual factors algorithm, that is, the maximum value in three-phase electricity voltage waveform data, minimum value and the two slope that will acquire are made comparisons comparison, and export and compare comparing result, to detect phase shortage at high speed.The present invention solves the influence of sampling phase time and A/D measurement error to pile defection, detection time is not only increased, and enhances the reliability of pile defection information, moreover it is possible to indicate the phase sequence of phase shortage, remote measurement and control has been adapted to, the cost of pile defection information is reduced.
Description
Technical field
The present invention relates to three-phase electricity detection technique fields, more specifically, are related to a kind of three-phase based on dual factors algorithm
Electric power failure detection method.
Background technique
In AC three-phase electric system, the power down of a certain phase can generate great damage to electrical equipment.It is existing to lack
Phase detection device is easy to be influenced by sampling phase time and A/D unit measurement error, general to need 3-5 alternating current at the soonest
Period, approximately more than 60-100 millisecond not only cause pile defection time delay larger, and pile defection unreliable information, can't refer to
The phase sequence for showing phase shortage is not suitable with remote measurement and control, obtains the at high cost of pile defection information.
In three-phase electricity in certain phase power down, it is badly in need of issuing control signal, cut-off equipment or starting standby electricity in power down moment
Source, and indicate disconnected Xiang Xiangxu, in case repairing.Currently, pile defection equipment is there are error, detection information is unreliable, detection when
Prolong larger, the problems such as being not suitable with remote measurement and control, is at high cost.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of three-phase electricity power down based on dual factors algorithm
Detection method solves the influence of sampling phase time and A/D measurement error to pile defection, not only increases detection time,
And enhance the reliability of pile defection information, moreover it is possible to which the phase sequence for indicating phase shortage has adapted to remote measurement and control, reduces phase shortage inspection
The cost of measurement information.
The purpose of the present invention is achieved through the following technical solutions: a kind of three-phase electricity power down based on dual factors algorithm
Detection method, comprising:
S1: it obtains and presses the superimposed three-phase electricity voltage waveform data of setting ratio；
S2: data accessed in step S1 being input in CPU, detect phase shortage information using dual factors algorithm,
The comparison that is, maximum value, minimum value and the two slope in the three-phase electricity voltage waveform data that will acquire are made comparisons, and export ratio
Compared with comparing result, to detect phase shortage at high speed.
Further, in step sl, comprising:
S10: connecting cloud platform by wireless and/or wireless communication unit, so that remotely perception gets the three-phase
Piezoelectric voltage Wave data.
Further, in step sl, including being provided with the circuit for being superimposed three-phase electricity voltage scale；
The circuit includes that current ratio superposition resistor network and linear light are even, and current ratio is superimposed resistor network and linear
Optocoupler connection；Current ratio superposition resistor network obtains forward current from power supply, and is superimposed resistance by adjusting current ratio
The resistance of network is superimposed forward current in the ratio of setting, is then input to linear optical coupling, linear light occasionally fold in proportion by output
Voltage waveform after adding.
Further, in step sl, setting ratio is set as 2.5:5:10, and full scale value is set as 10；According to the setting
Ratio obtains the phase information under out of phase angle, is as follows:
Wherein, A, B and C respectively represent the A phase in three-phase electricity, B phase, C phase.
Further, in step s 2, by A/D module samples, and three-phase mains voltage superposition Wave data is inputted
Into CPU.
Further, in step s 2, CPU is every A/D value of a T1 cycle monitoring, within a T2 period, i.e.,
It can detect that phase shortage and institute's phase shortage position, be as follows:
| Phase angle | 90 | 120 | 150 | 180 | 210 | 240 | 270 | 300 | 330 | 360 | 30 | 60 | 90 |
| Superposition ratio | A | 0.866A | 0.5(A+B) | 0.866B | B | 0.866B | 0.5(B+C) | 0.866C | C | 0.866C | 0.5(C+A) | 0.866A | A |
| Balance | 2.5 | 2.165 | 3.75 | 4.33 | 5 | 4.33 | 7.5 | 8.66 | 10 | 8.66 | 6.125 | 2.165 | 2.5 |
| Lack A | 0 | 0 | 2.5 | 4.33 | 5 | 4.33 | 7.5 | 8.66 | 10 | 8.66 | 5 | 0 | 0 |
| Lack B | 2.5 | 2.165 | 1.25 | 0 | 0 | 0 | 5 | 8.66 | 10 | 8.66 | 6.125 | 2.165 | 2.5 |
| Lack C | 2.5 | 2.165 | 3.75 | 4.33 | 5 | 4.33 | 2.5 | 0 | 0 | 0 | 1.25 | 2.165 | 2.5 |
| Lack AB | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 8.66 | 10 | 8.66 | 5 | 0 | 0 |
| Lack BC | 2.5 | 2.165 | 1.25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.25 | 2.165 | 2.5 |
| Lack CA | 0 | 0 | 2.5 | 4.33 | 5 | 4.33 | 2.5 | 0 | 0 | 0 | 0 | 0 | 0 |
。
Further, in step s 2, including being provided with the first pile defection curve for rendering, the curve is in phase
40 existing when connecting when angle is 60 degree, asymmetric wave mode is to lack a phase, maximum value 5, and preceding steep rear slow scarce C phase delays gradient suddenly
Ratio is 1:2.
Further, in step s 2, including being provided with the second pile defection curve for rendering, the curve is in phase
40 existing when connecting when angle is 60 degree, asymmetric wave mode is to lack a phase, maximum value 10, preceding suddenly rear slow scarce B phase, steep to delay tiltedly
Degree ratio is 1:2.
Further, in step s 2, including being provided with third pile defection curve for rendering, the curve is in phase
40 existing when connecting when angle is 60 degree, asymmetric wave mode is a scarce phase, and maximum value 10 is preceding to delay rear suddenly scarce A phase, is delayed suddenly tiltedly
Degree ratio is 1:2.
Further, in step s 2, including being provided with the 4th pile defection curve for rendering, the curve is in phase
12 0 existing when connecting when angle is 180 degree, balancing waveform is to lack two-phase；Maximum value is 2.5, lacks C, B phase；Maximum value is 5, is lacked
C, A phase；Maximum value is 10, lacks A, B.
The beneficial effects of the present invention are:
(1) present invention is handled using dual factors algorithm with carrying out voltage waveform sampled data for the first time in three-phase electro-detection,
It solves the influence of sampling phase time and A/D measurement error to pile defection, not only increases detection time, and enhance
The reliability of pile defection information, moreover it is possible to the phase sequence for indicating phase shortage has adapted to remote measurement and control, reduce pile defection information at
This.
(2) present invention realizes a CPU A/D value of every 0.8 millisecond of monitoring, the detection time index reached, at 20 milliseconds
It is interior, it can be detected out phase shortage and institute's phase shortage position, can make a response in 21 milliseconds, need 3-5 city compared to the prior art
Electric period, time are greater than for 60-100 milliseconds of index, have significant technological progress.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is three-phase overlaid waveforms the first pile defection curve graph that C phase is lacked in the present invention.
Fig. 2 is three-phase overlaid waveforms the second pile defection curve graph that B phase is lacked in the present invention.
Fig. 3 is the three-phase overlaid waveforms third pile defection curve graph that A phase is lacked in the present invention.
Fig. 4 is the 4th pile defection curve graph of three-phase overlaid waveforms that two-phase is lacked in the present invention；Wherein, the left side is to lack C, B
Phase, to lack C, A phase, the right is to lack A, B phase for centre.
Fig. 5 is the step flow diagram in the present invention.
Fig. 6 is the circuit modular structure block diagram in the present invention.
Fig. 7 is the structure chart of three Phase Proportion supercircuits in the present invention.
Fig. 8 is that normal three-phase superimposed voltage detects output waveform diagram in the present invention.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
It is as described below.All features disclosed in this specification, or implicit disclosed all methods or in the process the step of, in addition to mutual
Other than the feature and/or step of repulsion, it can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
Specific embodiments of the present invention are described more fully below, it should be noted that the embodiments described herein is served only for illustrating
Illustrate, is not intended to restrict the invention.In the following description, in order to provide a thorough understanding of the present invention, a large amount of spies are elaborated
Determine details.It will be apparent, however, to one skilled in the art that: this hair need not be carried out using these specific details
It is bright.In other instances, in order to avoid obscuring the present invention, well known circuit, software or method are not specifically described.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Before embodiment is described, need to explain some necessary terms.Such as:
If occurring describing various elements using the terms such as " first ", " second " in the application, but these elements are not answered
It is limited when by these terms.These terms are only used to distinguish an element and another element.Therefore, discussed below
" first " element can also be referred to as " second " element without departing from the teachings of the present invention.It should be understood that if referring to unitary
Part " connection " perhaps " coupled " to another element when it can be directly connected or be directly coupled to another element or can also
With there are intermediary elements.On the contrary, when referring to an element being " directly connected " or " directly coupled " to another element, then not
There are intermediary elements.
The various terms occurred in this application are used only for the purpose of description specific embodiment and are not intended as pair
Restriction of the invention, unless the context clearly indicates otherwise, otherwise singular intention also includes plural form.
When the terms " comprising " and/or " comprising " are used in this specification, these terms specify the feature, whole
The presence of body, step, operations, elements, and/or components, but be also not excluded for more than one other feature, entirety, step, operation,
The presence of component, assembly unit and/or its group and/or additional.
As shown in figures 1-8, a kind of three-phase electricity power failure detection method based on dual factors algorithm, comprising:
S1: it obtains and presses the superimposed three-phase electricity voltage waveform data of setting ratio；
S2: data accessed in step S1 being input in CPU, detect phase shortage information using dual factors algorithm,
The comparison that is, maximum value, minimum value and the two slope in the three-phase electricity voltage waveform data that will acquire are made comparisons, and export ratio
Compared with comparing result, to detect phase shortage at high speed.
Further, in step sl, comprising:
S10: connecting cloud platform by wireless and/or wireless communication unit, so that remotely perception gets the three-phase
Piezoelectric voltage Wave data.
Further, in step sl, including being provided with the circuit for being superimposed three-phase electricity voltage scale；
The circuit includes that current ratio superposition resistor network and linear light are even, and current ratio is superimposed resistor network and linear
Optocoupler connection；Current ratio superposition resistor network obtains forward current from power supply, and is superimposed resistance by adjusting current ratio
The resistance of network is superimposed forward current in the ratio of setting, is then input to linear optical coupling, linear light occasionally fold in proportion by output
Voltage waveform after adding.
Further, in step sl, setting ratio is set as 2.5:5:10, and full scale value is set as 10；According to the setting
Ratio obtains the phase information under out of phase angle, is as follows:
Wherein, A, B and C respectively represent the A phase in three-phase electricity, B phase, C phase.
Further, in step s 2, by A/D module samples, and three-phase mains voltage superposition Wave data is inputted
Into CPU.
Further, in step s 2, CPU is every A/D value of a T1 cycle monitoring, within a T2 period, i.e.,
It can detect that phase shortage and institute's phase shortage position, be as follows:
| Phase angle | 90 | 120 | 150 | 180 | 210 | 240 | 270 | 300 | 330 | 360 | 30 | 60 | 90 |
| Superposition ratio | A | 0.866A | 0.5(A+B) | 0.866B | B | 0.866B | 0.5(B+C) | 0.866C | C | 0.866C | 0.5(C+A) | 0.866A | A |
| Balance | 2.5 | 2.165 | 3.75 | 4.33 | 5 | 4.33 | 7.5 | 8.66 | 10 | 8.66 | 6.125 | 2.165 | 2.5 |
| Lack A | 0 | 0 | 2.5 | 4.33 | 5 | 4.33 | 7.5 | 8.66 | 10 | 8.66 | 5 | 0 | 0 |
| Lack B | 2.5 | 2.165 | 1.25 | 0 | 0 | 0 | 5 | 8.66 | 10 | 8.66 | 6.125 | 2.165 | 2.5 |
| Lack C | 2.5 | 2.165 | 3.75 | 4.33 | 5 | 4.33 | 2.5 | 0 | 0 | 0 | 1.25 | 2.165 | 2.5 |
| Lack AB | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 8.66 | 10 | 8.66 | 5 | 0 | 0 |
| Lack BC | 2.5 | 2.165 | 1.25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.25 | 2.165 | 2.5 |
| Lack CA | 0 | 0 | 2.5 | 4.33 | 5 | 4.33 | 2.5 | 0 | 0 | 0 | 0 | 0 | 0 |
。
Optionally, T1 20ms, T2 21ms.
Further, as shown in Figure 1, in step s 2, including being provided with the first pile defection curve for rendering, being somebody's turn to do
Curve is 40 existing when connecting when phase angle is 60 degree, and asymmetric wave mode is to lack a phase, maximum value 5, preceding steep rear slow scarce C
Phase, slow gradient ratio is 1:2 suddenly.
Further, as shown in Fig. 2, in step s 2, including being provided with the second pile defection curve for rendering, being somebody's turn to do
Curve is 40 existing when connecting when phase angle is 60 degree, and asymmetric wave mode is to lack a phase, maximum value 10, preceding steep rear slow scarce B
Phase, slow gradient ratio is 1:2 suddenly.
Further, as shown in figure 3, in step s 2, including being provided with third pile defection curve for rendering, being somebody's turn to do
Curve is 40 existing when connecting when phase angle is 60 degree, and asymmetric wave mode is to lack a phase, maximum value 10, preceding slow rear suddenly scarce A
Phase, slow gradient ratio is 1:2 suddenly.
Further, as shown in figure 4, in step s 2, including being provided with the 4th pile defection curve for rendering, being somebody's turn to do
Curve is 12 0 existing when connecting when phase angle is 180 degree, and balancing waveform is to lack two-phase；Maximum value is 2.5, lacks C, B phase；Most
Big value is 5, lacks C, A phase；Maximum value is 10, lacks A, B.
Such as Fig. 6, shown in 7,8, a kind of circuit being superimposed voltage scale, including current ratio are superimposed resistor network and line
Property light it is even.Current ratio superposition resistor network is connect with linear optical coupling U2, and current ratio is superimposed resistor network and is used for from power supply
The resistance for obtaining forward current, and being superimposed resistor network by adjusting current ratio is superimposed forward current in the ratio of setting,
It is then input to linear optical coupling U2, linear light can occasionally export superimposed voltage waveform in proportion.
As shown in fig. 7, electric current superposition resistor network includes multiple rectifier diodes, multiple resistance and DC bias circuit；
One end of first rectifier diode D1 is connect with the first port of power supply to be detected, and one end of the other end and first resistor R1 connect
It connects, the other end of first resistor R1 is connect with the first interface 1 of linear optical coupling U2；One end of second rectifier diode D2 with it is to be checked
The second port connection of power supply is surveyed, the other end is connect with one end of second resistance R2, the other end and linear light of second resistance R2
The first interface 1 of coupling U2 connects；One end of third rectifier diode D2 is connect with the third port of power supply to be detected, the other end with
One end of 3rd resistor R3 connects, and the other end of 3rd resistor R3 is connect with the first interface 1 of linear optical coupling U2；4th rectification two
One end of pole pipe D2 is connect with the third port of power supply to be detected, and the other end is connect with one end of 3rd resistor R3,3rd resistor
The other end of R3 is connect with the first interface 1 of linear optical coupling U2；4th end of one end of DC bias circuit and power supply to be detected
Mouth connection, the other end are connect with the first interface 1 of linear optical coupling U2, and the 4th port of power supply to be detected is also with linear optical coupling U2's
Second interface 2 connects.
DC bias circuit includes capacitor CT1, and one end of capacitor CT1 is connect with the second interface 2 of linear optical coupling U2, another
End is connected between the 4th rectifier diode D2 and the 4th resistance R4；Capacitor CT1 and the 4th resistance R4 constitutes DC bias circuit.
The third interface 33 of linear optical coupling U2 is grounded, and the 4th interface of linear optical coupling U2 is connect with one end of thirteenth resistor R3, another
End is connect with power supply.
Those skilled in the art can implement the present invention as a kind of circuit by voltage scale superposition, including
Current ratio is superimposed resistor network linear light idol, and current ratio superposition resistor network is connect with linear optical coupling U2, current ratio
It is superimposed the electricity that resistor network is used to obtain forward current from power supply, and is superimposed resistor network by adjusting the current ratio
Resistance is superimposed forward current in the ratio of setting, is then input to linear optical coupling U2, linear light can occasionally be exported and is superimposed in proportion
Voltage waveform afterwards.
Those skilled in the art can design ratio supercircuit of the invention, obtain unique three-phase mains voltage superposition
Waveform.Its two part of group ingredient:
(1) three Phase Proportion is superimposed resistor network
Three Phase Proportions superposition resistor network is made of D1, D2, D3, D4, R1, R2, R3, R4 in Fig. 2.Wherein DI-D4 is
Rectifier diode, to obtain forward current.CT1 and R4 be DC bias circuit, make linear light occasionally work linear zone.First
One end of rectifier diode D1 is connect with the first port of power supply to be detected, and the other end is connect with one end of first resistor R1, the
The other end of one resistance R1 is connect with the first interface 1 of the linear optical coupling U2；One end of second rectifier diode D2 with it is to be checked
The second port connection of power supply is surveyed, the other end is connect with one end of second resistance R2, the other end of second resistance R2 and the line
Property optocoupler U2 first interface 1 connect；One end of third rectifier diode D2 is connect with the third port of power supply to be detected, another
End is connect with one end of 3rd resistor R3, and the other end of 3rd resistor R3 is connect with the first interface 1 of the linear optical coupling U2；The
One end of four rectifier diode D2 is connect with the third port of power supply to be detected, and the other end is connect with one end of 3rd resistor R3,
The other end of 3rd resistor R3 is connect with the first interface 1 of the linear optical coupling U2.
DC bias circuit is made of capacitor CT1 and the 4th resistance R4, and one end of capacitor CT1 is with the linear optical coupling U2's
Second interface 2 connects, and the other end is connected between the 4th rectifier diode D2 and the 4th resistance R4.Selection R1, R2,
R3 resistance value can be such that three-phase current is superimposed by a certain percentage.For example, following table is the phase that the superposition ratio chosen is 2.5:5:10
Information (note: full scale value is set as 10).
(2) linear light is even
The right side of Fig. 2 is high-speed linear light idol U2, and the third interface 33 of linear optical coupling U2 is grounded, the of linear optical coupling U2
Four interfaces are connect with one end of thirteenth resistor R3, and the other end is connect with power supply.Since linear optical coupling U2 is in linear zone
It exports electric current and input current is linear, and linear optical coupling U2 can be used for carrying out AC and DC isolation, can be used for height
Low pressure isolation can be also used for the voltage waveform of output three Phase Proportions superposition, such as the thick black solid line in Fig. 3.
Those skilled in the art can implement invention as a kind of three-phase electric power open phase sensing module, including embodiment
The circuit for being superimposed voltage scale in one,
Using the available unique three-phase mains voltage superposition waveform of the circuit, and the three-phase piezoelectric voltage that will acquire
Overlaid waveforms are output to the A/D converting unit of sampling processing circuit.By by the analog input end and linear light of A/D converting unit
The output end of coupling U2 connects, and the digital output end of A/D converting unit and the input terminal of microprocessor unit connect, microprocessor list
The output end of member is connected with the input terminal of communication unit.Optionally, it completes to be located in the Wave data of acquisition in the microprocessor
Reason obtains phase shortage phase information.Optionally, data can be transmitted by Landline communication unit or wireless communication unit.
Those skilled in the art can implement the present invention as a kind of three-phase electricity power down high-speed measuring device, including
Circuit in embodiment one, for obtaining the three-phase electricity voltage superposition waveform of setting ratio, and the three-phase electricity electricity that will acquire
Pressure overlaid waveforms are output to the high-speed a/d unit of CC2530 chip module, and CC2530 chip is well known to those skilled in the art
A kind of integrated chip of TI company, those skilled in the art can directly use.But those skilled in the art should know,
Each point data, such as envelope point data etc. using the high-speed a/d unit acquisition overlaid waveforms of CC2530 chip are institutes of the present invention
The attached claimed technical solution of claim.The present invention is by high-speed a/d unit to the three-phase electricity voltage superposition waveform number of acquisition
According to progress analog-to-digital conversion, and the data of the three-phase electricity voltage superposition waveform envelope are obtained, the three-phase electricity that then will acquire
The digital signal of the data of voltage superposition waveform envelope is input to 51 core microprocessors of CC2530 chip module, by 51 kernels
The data that microprocessor controls the three-phase electricity voltage superposition waveform envelope are output to the ZigBee module of CC2530 chip module,
Data are transmitted from ZigBee module to ZigBee cordless communication network.
Illustrate in more detail, sampling processing circuit is made of A/D, microprocessor and wireless transmission unit.By A/D high
Speed sampling, obtains the data of three-phase mains voltage superposition waveform envelope.It is 12 A/D in CC2530, it is preferable that measure A/D
Precision is not so high, and 7 (128 equal part), LSB=0.078.For 50Hz alternating current, the sampling time (width) is chosen for 20 μ
S (is equivalent to 0.36 degree of phase angle), and the variation of voltage maximum is full less than the resolution of 7 A/D less than 0.07 within the sampling time
Sufficient measurement request.Sample frequency cannot be too high (frequency is high, power consumption is big).Preferably, using the sample frequency of 1.25KHz, every 0.8
Millisecond adopts a sample.There are 25 sampled points in i.e. each period.The three-phase mains voltage superposition Wave data obtained in this way has met
The requirement of three-phase lack phase detection.As heavy black is normal three-phase electricity sample waveform in Fig. 3.
The microprocessor of 51 kernels is integrated in CC2530, it to three superimposed envelope A/D sampled datas at
Phase shortage information is exported after reason to wireless transmission unit, and ZigBee wireless communication module is integrated in CC2530 chip, is passed through
ZigBee wireless communication module is added ZigBee wireless communication networks and transmits phase shortage data.
Those skilled in the art can by the present invention as a kind of long-range three-phase electricity power down high speed TT&C system of Internet of Things into
Row is implemented, including the three-phase electric power open phase sensing module and the first remote receiver in embodiment two, the first remote receiver
Receive the three-phase electricity detection waveform information data that three-phase electric power open phase sensing module issues.
Hardware display device and hardware controller are provided in first receiving device, hardware display device is for showing
The three-phase electricity shape information data and phase information data received are receiving shape information data that three-phase electricity detects simultaneously
To judge when being phase shortage information data, hardware controller issues the control signal worked normally for cutting off power supply to be detected,
Control signal can be used for cutting off the connection of power supply and surrounding devices to be detected, can be used for starting backup power source.
Optionally, hardware trigger mechanism, hardware trigger mechanism and hardware controls are provided in long-range first receiving device
Device connection, reception device receive the shape information data that three-phase electricity detects and judge be phase shortage information data when it is raw
At trigger signal, the trigger signal of phase shortage information data is transferred to control device by trigger device.In hardware display device, if
It is equipped with phase shortage phase sequence hardware indicating unit device, for specially indicating phase shortage phase sequence.Reception device can be mobile terminal device,
Such as mobile phone.
Those skilled in the art can be by the present invention as the long-range three-phase electricity power down high speed TT&C system of another Internet of Things
Implemented, including the three-phase electricity power down high-speed measuring device and the second remote receiver in embodiment three, second is remotely connect
Receiving apparatus receives the three-phase electricity detection waveform information data that three-phase electricity power down high-speed measuring device issues.
Hardware display device and hardware controller are provided in the second remote receiver, hardware display device is used for
The three-phase electricity shape information data that receive and phase information data are shown, in the shape information number for receiving three-phase electricity and detecting
According to and judge be phase shortage information data when, hardware controller issues the control letter worked normally for cutting off power supply to be detected
Number, control signal can be used for cutting off the connection of power supply and surrounding devices to be detected, can be used for starting backup power source.
Optionally, hardware trigger mechanism, hardware trigger mechanism and hardware controls are provided in the second remote receiver
Device connection, reception device receive the shape information data that three-phase electricity detects and judge be phase shortage information data when it is raw
At trigger signal, the trigger signal of phase shortage information data is transferred to control device by trigger device.In hardware display device, if
It is equipped with phase shortage phase sequence hardware indicating unit device, for specially indicating phase shortage phase sequence.Reception device can be mobile terminal device,
Such as mobile phone.
Remaining technical characteristic in the present embodiment, those skilled in the art can flexibly be selected according to the actual situation
With with to meet different specific actual demands.It will be apparent, however, to one skilled in the art that: it need not use
These specific details realize the present invention.In other instances, in order to avoid obscuring the present invention, well known calculation is not specifically described
Method, method or system etc. limit within technical protection scope in the claimed technical solution of claims of the present invention.
For the aforementioned method embodiment, for simple description, therefore, it is stated as a series of action combinations, still
Those skilled in the art should understand that the application is not limited by the described action sequence, because according to the application, it is a certain
A little steps can be performed in other orders or simultaneously.Secondly, those skilled in the art should also know that, it is retouched in specification
The embodiment stated belongs to preferred embodiment, necessary to related movement and unit not necessarily the application.
It will be appreciated by those of skill in the art that unit described in conjunction with the examples disclosed in the embodiments of the present disclosure and
Algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually with hard
Part or software mode execute, the specific application and design constraint depending on technical solution.Professional technician can be with
Each specific application is come to realize described function using distinct methods, but this realization should not exceed model of the invention
It encloses.
Disclosed system, module and method, may be implemented in other ways.For example, device described above
Embodiment, only schematically, for example, the division of the unit, can be only a kind of logical function partition, it is practical to realize
When there may be another division manner, such as multiple units or components can be combined or can be integrated into another system, or
Some features can be ignored or not executed.Another point, shown or discussed mutual coupling or direct-coupling or communication
Connection is it may be said that through some interfaces, the indirect coupling or communication connection of device or unit can be electrical property, mechanical or other
Form.
The unit that the discrete parts illustrates can be or can not also receive and is physically separated, shown as a unit
Component can be or can not receive physical unit, it can and it is in one place, or may be distributed over multiple network lists
In member.It can select some or all of unit therein according to the actual needs to realize the purpose of the scheme of the present embodiment.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially right in other words
The part of part or the technical solution that the prior art contributes can be embodied in the form of software products, the calculating
Machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be individual
Computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.And
Storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory
The various media that can store program code such as device (Random Access Memory, RAM), magnetic or disk.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in the method for above-described embodiment, being can
It is completed with instructing relevant hardware by computer program, the program can be stored in computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, ROM, RAM etc..
The above is only a preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and can be at this
In the text contemplated scope, modifications can be made through the above teachings or related fields of technology or knowledge.And those skilled in the art institute into
Capable modifications and changes do not depart from the spirit and scope of the present invention, then all should be in the protection scope of appended claims of the present invention
It is interior.
Claims (10)
1. a kind of three-phase electricity power failure detection method based on dual factors algorithm characterized by comprising
S1: it obtains and presses the superimposed three-phase electricity voltage waveform data of setting ratio；
S2: data accessed in step S1 are input in CPU, phase shortage information is detected using dual factors algorithm, that is, will
The maximum value in three-phase electricity voltage waveform data, minimum value and the two slope got is made comparisons comparison, and export it is more right
Than as a result, to detect phase shortage at high speed.
2. the method according to claim 1, wherein in step sl, comprising:
S10: connecting cloud platform by wireless and/or wireless communication unit, so that remotely perception gets the three-phase electricity electricity
Corrugating data.
3. method according to claim 1 or 2, which is characterized in that in step sl, including be provided with three-phase piezoelectric voltage
The circuit being superimposed in proportion；The circuit includes that current ratio superposition resistor network and linear light are even, and current ratio is superimposed resistance
Network is connect with linear optical coupling；Current ratio superposition resistor network obtains forward current from power supply, and by adjusting electric current ratio
The resistance of example superposition resistor network, is superimposed forward current in the ratio of setting, is then input to linear optical coupling, linear light is occasionally defeated
Superimposed voltage waveform in proportion out.
4. according to the method described in claim 3, it is characterized in that, in step sl, setting ratio is set as 2.5:5:10, and
Full scale value is set as 10；According to the setting ratio, the phase information under out of phase angle is obtained, is as follows:
Wherein, A, B and C respectively represent the A phase in three-phase electricity, B phase, C phase.
5. according to the method described in claim 4, it is characterized in that, in step s 2, by A/D module samples, and by three-phase
Line voltage overlaid waveforms data are input in CPU.
6. according to the method described in claim 5, it is characterized in that, in step s 2, CPU is primary every a T1 cycle monitoring
A/D value can be detected out phase shortage and institute's phase shortage position, be as follows: within a T2 period
。
7. according to the method described in claim 6, it is characterized in that, in step s 2, including being provided with first for rendering
Pile defection curve, the curve is 40 existing when connecting when phase angle is 60 degree, and asymmetric wave mode is to lack a phase, maximum value
It is 5, preceding steep rear slow scarce C phase, slow gradient ratio is 1:2 suddenly.
8. according to the method described in claim 6, it is characterized in that, in step s 2, including being provided with second for rendering
Pile defection curve, the curve is 40 existing when connecting when phase angle is 60 degree, and asymmetric wave mode is to lack a phase, maximum value
It is 10, preceding steep rear slow scarce B phase, slow gradient ratio is 1:2 suddenly.
9. according to the method described in claim 6, it is characterized in that, in step s 2, including being provided with third for rendering
Pile defection curve, the curve is 40 existing when connecting when phase angle is 60 degree, and asymmetric wave mode is to lack a phase, maximum value
It is 10, preceding slow rear suddenly scarce A phase, slow gradient ratio is 1:2 suddenly.
10. according to the method described in claim 6, it is characterized in that, in step s 2, including being provided with the 4th for rendering
Pile defection curve, the curve is 12 0 existing when connecting when phase angle is 180 degree, and balancing waveform is to lack two-phase；Maximum value
It is 2.5, lacks C, B phase；Maximum value is 5, lacks C, A phase；Maximum value is 10, lacks A, B.
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