CN207730841U - A kind of nuclear phase equipment of power circuit - Google Patents
A kind of nuclear phase equipment of power circuit Download PDFInfo
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- CN207730841U CN207730841U CN201720866844.3U CN201720866844U CN207730841U CN 207730841 U CN207730841 U CN 207730841U CN 201720866844 U CN201720866844 U CN 201720866844U CN 207730841 U CN207730841 U CN 207730841U
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Abstract
This application provides a kind of nuclear phase equipment of power circuit, including signal supervisory instrument, feature point detection device, processor, signal receiving/transmission device and device displaying result.Signal supervisory instrument is connected with the phase to be measured of power circuit, ground wire respectively, for the voltage in phase to be measured to be carried out voltage transformation, and exports the sampled voltage signal of predeterminated voltage；Feature point detection device is for obtaining the zero passage point moment of sampled voltage signal and real-time amplitude；Signal receiving/transmission device is used to receive the reference zero-acrross ing moment and reference amplitude of the reference point of power circuit；Consequential signal output end is configured as output to when reference amplitude and real-time amplitude match, with reference to the phase angle between zero-acrross ing moment and zero passage point moment；Device displaying result is used to show the nuclear phase result to match with phase angle to user.User directly can have a specific judgement according to the result that the device displaying result is shown to the phase sequence of user side, carry out fundamentally solving the problems, such as three-phase imbalance to take this as a foundation.
Description
Technical field
This application involves technical field of electric power, more specifically to a kind of nuclear phase equipment of power circuit.
Background technology
Perfect with extra-high voltage grid construction, the operating condition of power distribution network has been increasingly becoming emphasis of people's attention,
In, the three-phase imbalance problem of power distribution station is received more and more attention as a Universal Problems.The sheet of this problem
Caused by matter is three-phase electricity consumption imbalance, one side can cause distribution transformer loss to increase, and zero-sequence current increases, to shadow
Ring the safe and stable operation of distribution transformer；On the other hand the line loss that power distribution network can be increased, influences supply voltage quality.Cause
This, the improvement to three-phase imbalance problem is an important problem.
Currently, for three-phase imbalance problem mainly utilize SVG (Static Type Dynamic Reactive Compensation Device) compensate with
User's phase sequence adjusts two kinds of solutions.SVG compensation uses power electronics to compensate equipment, costly, and only changes
The three-phase imbalance index of kind distribution transforming outlet side, has some improvement to the three-phase imbalance problem of distribution transformer, but
Line loss and user side voltage to entire taiwan area belong to the method that index is not effected a permanent cure without any effect；The adjustment of user's phase sequence can be with
Fundamentally solve the problems, such as three-phase imbalance.
The premise for carrying out phase sequence adjustment is to need to be grasped the phase sequence situation of user side, however as low-voltage power distribution station area electricity consumption
The increase year by year of amount, newly-built taiwan area, that is, taiwan area transformation happen occasionally, while also as operation maintenance personnel flowing, lead to the number of taiwan area
According to cannot timely safeguard, the problem of unknown situation of phase sequence of taiwan area has become more generality.It is necessary to platform thus
The phase sequence of area's user side is verified, and phase sequence adjustment is carried out to take this as a foundation, to fundamentally solve three-phase imbalance
The problem of.
Utility model content
In view of this, the application provides a kind of phase checking device of power circuit, the electric power of the user side for low-voltage platform area
Circuit carries out nuclear phase, and foundation is provided for phase sequence adjustment.
To achieve the goals above, it is proposed that scheme it is as follows：
A kind of nuclear phase equipment of power circuit is applied to the power circuit of the user side of low-voltage platform area, including signal detection
Device, feature point detection device, processor, signal receiving/transmission device and device displaying result, wherein：
The signal supervisory instrument is connected with the phase to be measured of the power circuit, ground wire respectively, and being used for will be described to be measured
Voltage in phase carries out voltage transformation, and exports the sampled voltage signal of predeterminated voltage；
The feature point detection device obtains the sampled voltage for being detected to the voltage of the sine wave signal
The zero passage point moment and real-time amplitude of signal, and the zero passage point moment and the real-time amplitude are output to the processor；
The signal receiving/transmission device is used to receive the reference zero-acrross ing moment and reference amplitude of the reference point of the power circuit；
The processor is provided with first input end, the second input terminal and testing result output end, the first input end
It is connected with the signal output end of the feature point detection device, for receiving the zero passage point moment and the real-time amplitude；
Second input terminal is described with reference to zero passage quarter and institute for receiving for being connected with the signal receiving/transmission device
State reference amplitude；
The consequential signal output end is configured as output to when the reference amplitude matches with the real-time amplitude, is described
With reference to the phase angle between zero-acrross ing moment and the zero passage point moment；
The device displaying result is connected with the consequential signal output end, for being shown and the phase angle to user
The nuclear phase result to match.
Optionally, the signal supervisory instrument includes reduction voltage circuit and signal conditioning circuit, wherein：
The reduction voltage circuit is connected with the phase to be measured, the ground wire respectively, for by the voltage drop of phase to be measured as low as
Predeterminated voltage obtains low-voltage signal；
The signal conditioning circuit is used to carry out conditioning processing, output phase and the low-voltage signal to the low-voltage signal
The identical sampled voltage signal of phase.
Optionally, the signal conditioning circuit includes voltage follower and bandwidth-limited circuit, wherein：
The voltage follower obtains the sampled voltage signal for carrying out following processing to the low-voltage signal；
The bandwidth-limited circuit is used to filter out the noise jamming of the sampled voltage signal.
Optionally, the signal supervisory instrument further includes signal isolation circuit, wherein：
The reduction voltage circuit is connected with the signal conditioning circuit by the signal isolation circuit, described for filtering out
Voltage pulse interference in low-voltage signal.
Optionally, when the nuclear phase equipment is used to detect the voltage signal of the reference point, the signal receiving/transmission device
It is additionally operable to send to the nuclear phase equipment for being placed in the tested point described with reference to zero-acrross ing moment and the reference amplitude.
Optionally, the signal receiving/transmission device is wireless signal transceiver.
Optionally, the device displaying result includes digital display element, wherein：
The digital display element is for showing the phase angle.
Optionally, device displaying result further include three with A phases, B phases and C phases corresponding LED lamps, wherein：
The corresponding A phases of the LED light, B phases or the C phases being lit are the nuclear phase result.
It can be seen from the above technical scheme that this application discloses a kind of nuclear phase equipment of power circuit, it is applied to platform
The power circuit of the user side in area, including signal supervisory instrument, feature point detection device, processor, signal receiving/transmission device and knot
Fruit display device.Signal supervisory instrument is connected with the phase to be measured of power circuit, ground wire respectively, is used for the voltage in phase to be measured
Voltage transformation is carried out, and exports the sampled voltage signal of predeterminated voltage；Feature point detection device is used for the electricity to sine wave signal
Pressure is detected, and obtains the zero passage point moment of sine wave signal and real-time amplitude, and zero passage point moment and real-time amplitude are exported
To processor；Signal receiving/transmission device is used to receive the reference zero-acrross ing moment and reference amplitude of the reference point of power circuit, and exports
To processor；Consequential signal output end is configured as output to when reference amplitude and real-time amplitude match, with reference to zero-acrross ing moment with
Phase angle between zero passage point moment；Device displaying result is connected with consequential signal output end, for being shown and phase to user
The nuclear phase result that parallactic angle matches.User directly can have the phase sequence of user side according to the result that the device displaying result is shown
A specific judgement carries out phase sequence adjustment, to fundamentally solve the problems, such as three-phase imbalance so as to take this as a foundation.
Description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram of the nuclear phase apparatus embodiments of power circuit provided by the present application；
Fig. 2 is phase bit comparison figure provided by the present application.
Specific implementation mode
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall in the protection scope of this application.
Fig. 1 is a kind of structural schematic diagram of the nuclear phase apparatus embodiments of power circuit provided by the present application.
As shown in Figure 1, nuclear phase equipment provided in this embodiment include signal supervisory instrument 10, feature point detection device 20,
Processor 30, signal receiving/transmission device 40 and device displaying result 50.Wherein, signal supervisory instrument is connected with feature point detection device
It connects, processor is then connected with feature point detection device, signal receiving/transmission device, device displaying result respectively.
When user side on the power circuit to low-voltage platform area carries out nuclear phase, the outlet of the reference point low-voltage platform area of verification
Side is with reference to line sequence with the line sequence of outgoing line side, by its line sequence sequence, respectively A phases, B phases and C phases, this equipment are then deployed in
The user side, when checking out the circuit that user side is connected with A phases, then it is similarly A phases, remaining circuit then be respectively B phases and
C phases.
Signal supervisory instrument and power circuit it is to be measured be connected, ground wire is connected, for by the voltage of power circuit into
Row voltage transformation is converted to the voltage that suitable low-voltage equipment is detected, and sampled voltage signal is exported by signal output end, should
The voltage of sampled voltage signal is prespecified voltage value.
Signal supervisory instrument includes reduction voltage circuit 11 and signal conditioning circuit 12, and reduction voltage circuit is used for the height of power circuit
Voltage become it is lower suitable for detection low-voltage signal, in view of low-voltage platform area voltage between 100~1000 volts, in order to meet
The no-load voltage ratio of testing requirement, reduction voltage circuit is 1000:1.It include the voltage transformer for decompression in the reduction voltage circuit.
Signal conditioning circuit is used to the low-voltage signal passing through voltage follow and bandpass filtering, to obtain the sampled voltage
Signal.Signal conditioning circuit includes voltage follower (not shown) and bandpass filter (not shown), and voltage follower circuit is used for
The sampled voltage signal is obtained by voltage follow, and the clutter that bandpass filter is then used to filter out in sampled voltage signal is dry
It disturbs.
In addition, signal deteching circuit is additionally provided with signal isolation circuit 13 between reduction voltage circuit and signal conditioning circuit,
The circuit is interfered for filtering out voltage pulse in low-voltage signal, is adversely affected to avoid to signal conditioning circuit, to improve
Accuracy of detection.
The signal input part of feature point detection device is connected with the signal output end of signal deteching circuit, for receiving letter
The sampled voltage signal of number detection device output.Characteristic point detection is carried out after receiving sampled voltage signal, specifically
By obtaining the zero passage point moment of the phase to be measured and real-time amplitude to the detection of its voltage and amplitude.Feature point detection device is obtaining
Get phase to be measured zero passage point moment and real-time amplitude after be output to processor.
Signal receiving/transmission device then is used to receive the reference zero passage point moment and reference amplitude of above-mentioned reference point.Join for detecting
The zero passage point moment of examination point and reference amplitude or phase checking device provided by the utility model, the i.e. phase checking device utilize
Signal supervisory instrument and feature point detection device obtain the zero passage point moment and amplitude of the reference point, i.e. the reference zero passage of reference point
Moment and reference amplitude.Signal receiving/transmission device is received is output to processor with reference to after zero-acrross ing moment and reference amplitude.
In order to dispose conveniently, the preferable wireless signal transceiver of signal receiving/transmission device.It can will generally be in reference point
Nuclear phase equipment be known as host, be located at phase to be measured then be slave；The signal receiving/transmission device of nuclear phase equipment as host is then used
It is above-mentioned with reference to zero-acrross ing moment and reference amplitude in being sent to the signal receiving/transmission device of slave.
Processor is provided with first input end, the second input terminal and testing result output end, first input end and characteristic point
The signal output end of detection device is connected, and the second input terminal is then connected with the signal output end of signal receiving/transmission device, detection
As a result output end is then connected with device displaying result.
Processor reference amplitude, real-time amplitude are received by first input end and the second input terminal, with reference to zero passage when
It carves with after zero passage point moment, the phase angle between phase and reference point to be measured is determined using above-mentioned parameter.Specifically judge principle such as
Under, with reference to shown in Fig. 2：
After the nuclear phase device power of slave, held first with the nuclear phase equipment in reference point as host
Hand after shaking hands successfully, acquires the voltage magnitude and real-time storage of the phase to be measured, while the signal of real-time query host in real time,
After detecting host signal, by above pushing away the reference zero crossing and reference amplitude of the transmission of △ t time inquiring hosts, if with reference to
Point is A phases with phase to be measured, is being met | t0-t1|≤tδIn the case of, then X0-X1<X δ, wherein tδFor correction value, t0 is Host Detection
To with reference to zero-acrross ing moment, t1 is at the time of adding the △ t times at the time of detecting Host Command from machine examination, and X0 arrives for Host Detection
The zero crossing amplitude of A phases when X1 is that slave detects Host Command, above pushes away the amplitude of △ t time inquiring storage address, and X δ are to repair
Positive value.
If reference point is A phases, phase to be measured is B phases, when A phase zero crossings, because B phases lag 120 ° of A phases, and B phase voltages at this time
Amplitude be 311*sin (- 120)=- 269V, even if occur low voltage condition should in 0.8 times or more i.e. -269*0.8=-215V,
X δ are correction value.Meeting | t0-t2|≤tδIn the case of, then X0-X2<215-X δ, wherein tδFor correction value, t0 is Host Detection
At the time of to zero crossing, t2 is at the time of adding the △ t times at the time of detecting Host Command from machine examination, and X2 detects for slave
After host data, the reference amplitude of △ t+ (0.02*240/360) times is above pushed away.
If reference point is A phases, phase to be measured is C phases, and when A phase zero crossings, because C phases lag 240 ° of A phases, then C phase is electric at this time
Pressure amplitude value is 311*sin (240)=269V, should be in 0.8 times or more i.e. 269*0.8=215V, X δ even if there is low voltage condition
For correction value.Meeting | t0-t3|≤tδIn the case of, then X0-X3<- 215+X δ, wherein tδFor correction value, t0 is Host Detection
At the time of to zero crossing, t1 is at the time of adding the △ t times at the time of detecting Host Command from machine examination, and X3 detects for slave
After host data, the reference amplitude of △ t+ (0.02*120/360) times is above pushed away.
By above-mentioned calculating, processor can obtain the phase angle between phase and reference point to be measured, and by the phase angle
It is output to device displaying result by testing result output end, device displaying result is then shown to user to match with the phase angle
Nuclear phase result.
The display device includes digital display element and three LED light.Digital display element is for showing phase angle, user
It is the relationship between phase and reference point to be measured of can determine that, such as identical, advanced 12 ° or 120 ° of lag by observing phase angle, to
That phase when can determine the phase to be measured actually；Each LED light corresponds to a phase, respectively corresponding A phase, B phases and C phases, to be measured when judging
When mutually identical as reference point, then show that first LED light is bright, and so on, it can intuitively observe nuclear phase thereby using family
As a result.
It can be seen from the above technical proposal that present embodiments providing a kind of nuclear phase equipment of power circuit, it is applied to platform
The power circuit of the user side in area, including signal supervisory instrument, feature point detection device, processor, signal receiving/transmission device and knot
Fruit display device.Signal supervisory instrument is connected with the phase to be measured of power circuit, ground wire respectively, is used for the voltage in phase to be measured
Voltage transformation is carried out, and exports the sampled voltage signal of predeterminated voltage；Feature point detection device is used for the electricity to sine wave signal
Pressure is detected, and obtains the zero passage point moment of sine wave signal and real-time amplitude, and zero passage point moment and real-time amplitude are exported
To processor；Signal receiving/transmission device is used to receive the reference zero-acrross ing moment and reference amplitude of the reference point of power circuit, and exports
To processor；Consequential signal output end is configured as output to when reference amplitude and real-time amplitude match, with reference to zero-acrross ing moment with
Phase angle between zero passage point moment；Device displaying result is connected with consequential signal output end, for being shown and phase to user
The nuclear phase result that parallactic angle matches.User directly can have the phase sequence of user side according to the result that the device displaying result is shown
A specific judgement carries out phase sequence adjustment, to fundamentally solve the problems, such as three-phase imbalance so as to take this as a foundation.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.To the upper of the disclosed embodiments
State it is bright, enable professional and technical personnel in the field realize or use the application.Various modifications to these embodiments are to ability
It will be apparent for the professional technician in domain, the general principles defined herein can not depart from the application's
In the case of spirit or scope, realize in other embodiments.Therefore, the application be not intended to be limited to it is shown in this article these
Embodiment, and it is to fit to widest range consistent with the principles and novel features disclosed in this article.
Claims (8)
1. a kind of nuclear phase equipment of power circuit is applied to the power circuit of the user side of low-voltage platform area, which is characterized in that including
Signal supervisory instrument, feature point detection device, processor, signal receiving/transmission device and device displaying result, wherein：
The signal supervisory instrument is connected with the phase to be measured of the power circuit, ground wire respectively, is used for the phase to be measured
Voltage carry out voltage transformation, and export the sampled voltage signal of predeterminated voltage；
The feature point detection device obtains the sampled voltage letter for being detected to the voltage of the sampled voltage signal
Number zero passage point moment and real-time amplitude, and the zero passage point moment and the real-time amplitude are output to the processor；
The signal receiving/transmission device is used to receive the reference zero-acrross ing moment and reference amplitude of the reference point of the power circuit；
The processor is provided with first input end, the second input terminal and testing result output end, the first input end and institute
The signal output end for stating feature point detection device is connected, for receiving the zero passage point moment and the real-time amplitude；
Second input terminal is described with reference to zero-acrross ing moment and described for receiving for being connected with the signal receiving/transmission device
Reference amplitude；
The testing result output end is configured as output to when the reference amplitude and the real-time amplitude match, the reference
Phase angle between zero-acrross ing moment and the zero passage point moment；
The device displaying result is connected with the consequential signal output end, for being shown and the phase angle phase to user
The nuclear phase result matched.
2. nuclear phase equipment as described in claim 1, which is characterized in that the signal supervisory instrument includes reduction voltage circuit and signal
Modulate circuit, wherein：
The reduction voltage circuit is connected with the phase to be measured, the ground wire respectively, for by the voltage drop of phase to be measured as low as default
Voltage obtains low-voltage signal；
The signal conditioning circuit to the low-voltage signal for carrying out conditioning processing, the phase of output phase and the low-voltage signal
The identical sampled voltage signal in position.
3. nuclear phase equipment as claimed in claim 2, which is characterized in that the signal conditioning circuit includes voltage follower and band
Bandpass filter circuit, wherein：
The voltage follower obtains the sampled voltage signal for carrying out following processing to the low-voltage signal；
The bandwidth-limited circuit is used to filter out the noise jamming of the sampled voltage signal.
4. nuclear phase equipment as claimed in claim 2, which is characterized in that the signal supervisory instrument further includes signal isolation electricity
Road, wherein：
The reduction voltage circuit is connected with the signal conditioning circuit by the signal isolation circuit, for filtering out the low pressure
Voltage pulse interference in signal.
5. nuclear phase equipment as described in claim 1, which is characterized in that in the nuclear phase equipment for detecting the reference point
When voltage signal, when the signal receiving/transmission device is additionally operable to send the reference zero passage to the nuclear phase equipment for being placed in the phase to be measured
It carves and the reference amplitude.
6. nuclear phase equipment as claimed in claim 5, which is characterized in that the signal receiving/transmission device is wireless signal transmitting-receiving dress
It sets.
7. nuclear phase equipment as described in claim 1, which is characterized in that the device displaying result includes digital display element,
Wherein：
The digital display element is for showing the phase angle.
8. nuclear phase equipment as claimed in claim 7, which is characterized in that device displaying result further includes three and A phases, B phases and C
Mutually corresponding LED light, wherein：
The corresponding A phases of the LED light, B phases or the C phases being lit are the nuclear phase result.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720866844.3U CN207730841U (en) | 2017-07-17 | 2017-07-17 | A kind of nuclear phase equipment of power circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720866844.3U CN207730841U (en) | 2017-07-17 | 2017-07-17 | A kind of nuclear phase equipment of power circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212334A (en) * | 2018-09-27 | 2019-01-15 | 深圳友讯达科技股份有限公司 | Electric energy meter phase sequence identifies device and method |
| CN112394225A (en) * | 2020-09-30 | 2021-02-23 | 深圳供电局有限公司 | Phase angle detection device and method |
-
2017
- 2017-07-17 CN CN201720866844.3U patent/CN207730841U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212334A (en) * | 2018-09-27 | 2019-01-15 | 深圳友讯达科技股份有限公司 | Electric energy meter phase sequence identifies device and method |
| CN112394225A (en) * | 2020-09-30 | 2021-02-23 | 深圳供电局有限公司 | Phase angle detection device and method |
| CN112394225B (en) * | 2020-09-30 | 2024-01-30 | 深圳供电局有限公司 | Phase angle detection device and method |
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