CN106841780A - Long-range nuclear-phase method and device - Google Patents
Long-range nuclear-phase method and device Download PDFInfo
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- CN106841780A CN106841780A CN201611264857.XA CN201611264857A CN106841780A CN 106841780 A CN106841780 A CN 106841780A CN 201611264857 A CN201611264857 A CN 201611264857A CN 106841780 A CN106841780 A CN 106841780A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
- G01R25/005—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller, or for passing one of the input signals as output signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/18—Indicating phase sequence; Indicating synchronism
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Abstract
Long-range nuclear-phase method and device are the embodiment of the invention provides, including：The first voltage induced signal of first line is obtained, wherein, the first voltage induced signal is gathered by the first collection terminal according to gps signal；The second voltage induced signal of the second circuit is obtained, wherein, the second voltage induced signal is gathered by the second collection terminal according to the gps signal；According to the first voltage induced signal and the second voltage induced signal, the phase comparative result of the first line and second circuit is obtained.The present invention solves solution, and in the prior art there is nuclear phase technical problem closer to the distance in nuclear-phase method, realizes remote nuclear phase and improves the technique effect of the accuracy of nuclear phase.
Description
Technical field
The present invention relates to power system detection technique field, more particularly to long-range nuclear-phase method and device.
Background technology
With the development and the improvement of people's living standards of power technology, original power system cannot meet the need of people
Will, therefore be frequently necessary to carry out Cable Reformation, during Cable Reformation, carry out reconfiguration by original, it usually needs to difference
Circuit carry out nuclear phase, nuclear phase refers to that phase of two power supplys or loop etc. is tested with special instrument.
In existing method, typically two power circuits are tested respectively using two collectors, then by two
The result of individual collector is analyzed, so as to judge whether phase is identical.
However, in existing method, the measurement distance between two collectors is nearer, it is impossible to more than 150 meters, it is impossible to adjust the distance
Two power lines farther out are tested.
It can be seen that, there is nuclear phase defect closer to the distance in existing nuclear-phase method.
The content of the invention
A kind of long-range nuclear-phase method and device are the embodiment of the invention provides, is deposited for solving nuclear-phase method in the prior art
In nuclear phase technical problem closer to the distance.
In a first aspect, the invention provides long-range nuclear-phase method, methods described includes：Obtain the first voltage of first line
Induced signal, wherein, the first voltage induced signal is gathered by the first collection terminal according to gps signal；Obtain the second circuit
Second voltage induced signal, wherein, the second voltage induced signal is gathered by the second collection terminal according to the gps signal；Root
According to the first voltage induced signal and the second voltage induced signal, the first line and second circuit are obtained
Phase comparative result.
It is described to be believed according to the first voltage induced signal and second voltage sensing in the method that the present invention is provided
Number, the phase comparative result of the first line and second circuit is obtained, including：The first voltage induced signal is turned
It is changed to first phase data；The second voltage induced signal is converted into second phase data；Judge the first phase number
Whether it is more than preset value according to the second phase data difference；If being more than, the phase comparative result is out-phase；Otherwise,
Then the phase comparative result is same phase.
In the method that the present invention is provided, according to the first voltage induced signal and second voltage sensing letter
Number, before obtaining phase comparative result, also include：Judge whether the first line is same exchange together with second circuit
Step net.
It is described to judge whether the first line is same exchange with second circuit in the method that the present invention is provided
Synchronous net, including：Obtain the first voltage frequency of the first line；Obtain the second voltage frequency of second circuit；Obtain
Obtain the comparative result of the first voltage frequency and the second voltage frequency；According to the comparative result, described first is judged
Whether circuit is same AC synchronous net with second circuit.
Second aspect, the invention provides long-range nuclear-phase method, methods described includes：Obtain gps signal；According to described
Gps signal, obtains the first voltage induced signal of first line；The first voltage induced signal is sent to remote terminal,
So that the remote terminal carries out nuclear phase according to the first voltage induced signal.
The third aspect, the invention provides long-range nuclear-phase method, methods described includes：Obtain gps signal；According to described
Gps signal, obtains the second voltage induced signal of the second circuit；The second voltage induced signal is sent to remote terminal,
So that the remote terminal carries out nuclear phase according to the second voltage induced signal.
The third aspect, the invention provides long-range phase checking device, described device includes：First obtains module, for obtaining
The first voltage induced signal of first line, wherein, the first voltage induced signal is adopted by the first collection terminal according to gps signal
Collection；Second obtains module, the second voltage induced signal for obtaining the second circuit, wherein, the second voltage induced signal
Gathered according to the gps signal by the second collection terminal；3rd obtains module, for according to the first voltage induced signal and institute
Second voltage induced signal is stated, the phase comparative result of the first line and second circuit is obtained.
In the device that the present invention is provided, the 3rd acquisition module is additionally operable to：The first voltage induced signal is turned
It is changed to first phase data；The second voltage induced signal is converted into second phase data；Judge the first phase number
Whether it is more than preset value according to the second phase data difference；If being more than, the phase comparative result is out-phase；Otherwise,
Then the phase comparative result is same phase.
In the device that the present invention is provided, described device also includes：Judge module, for judging the first line and institute
State whether the second circuit is same AC synchronous net.
In the device that the present invention is provided, the judge module is additionally operable to：Obtain the first voltage of the first line frequently
Rate；Obtain the second voltage frequency of second circuit；Obtain the ratio of the first voltage frequency and the second voltage frequency
Relatively result；According to the comparative result, judge whether the first line is same AC synchronous net with second circuit.
Said one or multiple technical schemes in the embodiment of the present invention, at least imitate with following one or more technology
Really：
The method and apparatus that the present invention is provided, by the first voltage induced signal and second circuit that obtain first line
Second voltage induced signal, and according to the first voltage induced signal and the second voltage induced signal, obtains described the
The phase comparative result of one circuit and second circuit.Because remote terminal can obtain the first collection terminal according to gps signal
Second induced signal that gather according to gps signal of first induced signal and the second collection terminal of collection, i.e. the first acquisition terminal with
Corresponding voltage induced signal can be sent to remote terminal by the second acquisition terminal respectively, and the first collection terminal and second is gathered
Short-range communication need not be carried out between end, is only responsible for gathering signal respectively, such first collection terminal and the second collection terminal can be with
Remote capture is realized, then first induced signal and the second induced signal of collection is processed respectively by remote terminal,
The phase comparative result of first line and the second circuit is drawn, solving nuclear-phase method in the prior art, to there is nuclear phase closer to the distance
Technical problem, realize the technique effect of remote nuclear phase.
Brief description of the drawings
Fig. 1 is the flow chart of embodiment of the present invention medium-long range nuclear-phase method；
Fig. 2 is the logical construction schematic diagram of embodiment of the present invention medium-long range phase checking device.
Specific embodiment
A kind of long-range nuclear-phase method provided in an embodiment of the present invention and device, solve nuclear-phase method in the prior art and exist
Nuclear phase technical problem closer to the distance, realizes remote technique effect.
In order to solve the above-mentioned technical problem, the technical scheme general thought that the present invention is provided is as follows：
In the technical scheme of the embodiment of the present invention, the first voltage induced signal of the first collection terminal is obtained, wherein, it is described
First voltage induced signal is that first collection terminal is gathered according to gps signal from first line；Obtain the second collection terminal
Second voltage induced signal, wherein, the second voltage induced signal is second collection terminal according to the gps signal from
The collection of two circuits；According to the first voltage induced signal and the second voltage induced signal, the first line is obtained
With the phase comparative result of second circuit.
By the above method, because remote terminal can obtain the first collection terminal is gathered according to gps signal first
The second induced signal that induced signal and the second collection terminal are gathered according to gps signal, such first collection terminal and the second collection terminal
Can realize that remote signal is gathered, and first induced signal and the second induced signal of collection are carried out respectively by remote terminal
Treatment, draw the phase comparative result of first line and the second circuit, solve nuclear-phase method in the prior art exist nuclear phase away from
Technical problem close to, realizes the technique effect of remote nuclear phase.
Technical solution of the present invention is described in detail below by accompanying drawing and specific embodiment, it should be understood that the present invention
Specific features in embodiment and embodiment are the detailed description to technical solution of the present invention, rather than to the technology of the present invention
The restriction of scheme, in the case where not conflicting, the technical characteristic in the embodiment of the present invention and embodiment can be mutually combined.
Embodiment one
First aspect present invention provides journey nuclear-phase method, refer to Fig. 1, is the method flow diagram of long-range nuclear-phase method,
The method includes：
S101：The first voltage induced signal of the first collection terminal is obtained, wherein, the first voltage induced signal is described
First collection terminal is gathered according to gps signal from first line；
S102：The second voltage induced signal of the second collection terminal is obtained, wherein, the second voltage induced signal is described
Second collection terminal is gathered according to the gps signal from the second circuit；
S103：According to the first voltage induced signal and the second voltage induced signal, the first line is obtained
With the phase comparative result of second circuit.
It should be noted that in the present invention, the step S101 and step S102 can be in no particular order first sequentially
Perform step S101, or first carry out step S102.
Below, the long-range nuclear-phase method that the present invention is provided is described in detail with reference to Fig. 1：
First, step S101 is performed, the first voltage induced signal of first line is obtained, wherein, the first voltage sense
Induction signal is gathered by the first collection terminal according to gps signal.
In embodiments of the present invention, first collection terminal can be the equipment or system for collection voltages signal, example
Such as detector or collector, the first collection terminal can receive gps signal by GPS module, then according to gps signal from the
One circuit gathers first voltage induced signal, and is sent to remote terminal by wireless transmission method.
Next, performing step S102, the second voltage induced signal of the second circuit is obtained, wherein, the second voltage
Induced signal is gathered by the second collection terminal according to the gps signal.
In specific implementation process, second collection terminal can be the equipment or system for collection voltages signal, example
Such as detector or collector, the second collection terminal can receive gps signal by GPS module, then according to gps signal from the
Two circuits gather second voltage induced signal, and the first collection terminal and the second collection terminal carry out time synchronized according to gps signal.Wherein
Second circuit is different circuits from first line, and the second collection terminal is in different positions from the first collection terminal, as long as the
One collection terminal and the second collection terminal can be communicated with remote terminal, and communication mode is wireless transmission method, for example 4G
Communication mode.
More specifically, GPS time service reservations can also be carried out to the first collection terminal and the second collection terminal, has arrived Preset Time
Afterwards, then carry out signal acquisition, the signal acquisition that can so synchronize, and improve the accuracy of collection signal.
Next, performing step S103, according to the first voltage induced signal and the second voltage induced signal, obtain
Obtain the phase comparative result of the first line and second circuit.
In specific implementation process, after remote terminal obtains first voltage induced signal and second voltage induced signal,
The first voltage induced signal and second voltage induced signal are processed, and draws phase comparative result.
Specifically, according to the first voltage induced signal and the second voltage induced signal, the First Line is obtained
Road and the phase comparative result of second circuit, can be obtained by following step：
The first voltage induced signal is converted into first phase data；
The second voltage induced signal is converted into second phase data；
Judge the first phase data with the second phase data difference whether more than preset value；
If being more than, the phase comparative result is out-phase；
Otherwise, then the phase comparative result is same phase.
Specifically, remote terminal includes data processing module and nuclear phase module, first by data processing module to obtaining
The first voltage induced signal and second voltage induced signal for obtaining are processed, and are converted into corresponding first phase data and second
Then above-mentioned first phase data and second phase data are compared by phase data by nuclear phase module, draw phase ratio
Relatively result.Wherein, preset value those skilled in the art can be configured according to the precision of actual measurement or requirement, not make again
Concrete restriction.
For example, if preset value is set into 20 °, if first phase data are 263 °, second phase data are
356 °, first phase data are 93 ° with the difference of second phase data, then can be determined that first line and the second circuit out-phase.
Used as a kind of optional embodiment, remote terminal can also be according to the first voltage induced signal for obtaining and the second electricity
Pressure sensitivity induction signal, judges that first line and the second circuit are same phase sequence or negative phase sequence.Additionally, remote terminal can also be to phase
Comparing carries out quantum chemical method, by the signal to the first collection terminal and the second collection terminal, can also obtain phase vectors figure, in order to
Man-machine interaction is better achieved, result can be showed by user by display screen, user can as needed to data
Checked or preserved, the nuclear-phase method in the present invention is applied also for closely nuclear phase in addition.
As shown from the above technical solution, because remote terminal can obtain the first collection terminal is gathered according to gps signal
The second induced signal that one induced signal and the second collection terminal are gathered according to gps signal, and in the prior art, the first collection terminal and
Second collection terminal needs to be compared the data of collection, and such first collection terminal and the second collection terminal then want short-range communication,
Remote nuclear phase cannot then be realized, for distant circuit then cannot nuclear phase, and in embodiments of the present invention, first
Collection terminal and the second collection terminal can carry out signal acquisition, and the signal transmission that will be gathered to remote terminal according to gps signal, this
Need not directly be communicated between the collection terminal of sample first and the second collection terminal, only be responsible for gathering signal, Ran Houtong respectively
Cross first induced signal and second induced signal of the remote terminal respectively to obtaining to process, draw first line and the second line
The phase comparative result on road, so as to realize long-range nuclear phase, solving nuclear-phase method in the prior art, to there is nuclear phase closer to the distance
Technical problem, realizes the technique effect of remote nuclear phase.
Alternatively, according to the first voltage induced signal and the second voltage induced signal, phase bit comparison is obtained
Before result, also include：
Judge whether the first line is same AC synchronous net with second circuit.
Specifically, judge whether the first line is same AC synchronous net with second circuit, can pass through
Following manner is realized：
Obtain the first voltage frequency of the first line；
Obtain the second voltage frequency of second circuit；
Obtain the comparative result of the first voltage frequency and the second voltage frequency；
According to the comparative result, judge whether the first line is same AC synchronous net with second circuit.
In specific implementation process, the first voltage frequency of first line can be gathered by the first collection terminal, passed through
Second collection terminal gathers the second voltage frequency of the second circuit, and then the first collection terminal and the second collection terminal are respectively by described first
Electric voltage frequency and second voltage frequency are transmitted to remote terminal, and by comparing first voltage frequency and second voltage frequency, are come
Judge whether the first line is same AC synchronous net with second circuit, so to first line and the second circuit
Before carrying out nuclear phase, the electric voltage frequency of first line and the second circuit is acquired and compared respectively, the effect of nuclear phase can be improved
Rate.
As a kind of optional embodiment, before the first collection terminal and the second collection terminal carry out signal acquisition, first to
One collection terminal and the second collection terminal carry out phase alignment operation, to ensure the accuracy of collection signal.Specifically, can be respectively
The acquisition module of the first collection terminal and the second collection terminal is measured into a circuit simultaneously, and the signal of collection is sent respectively to far
Journey terminal, shows corresponding result on remote terminal, so as to enter the calibration of line phase.
Embodiment two
Based on the same inventive concept with first aspect medium-long range nuclear-phase method, second aspect present invention is additionally provided separately
A kind of long-range nuclear-phase method, the method includes：
Obtain gps signal；
According to the gps signal, the first voltage induced signal of first line is obtained；
The first voltage induced signal is sent to remote terminal, so that the remote terminal is according to the first voltage
Induced signal carries out nuclear phase.
Specifically, the first collection terminal needs to carry out first line according to gps signal signal acquisition, obtains First Line
The first voltage induced signal on road；And send to remote terminal the first voltage induced signal, so that the remote terminal
Nuclear phase is carried out according to the first voltage induced signal, in the technical scheme, the first collection terminal wirelessly with remotely
Terminal communication, it is only necessary to which first voltage induced signal is sent to remote terminal.
The long-range nuclear-phase method of the second collection terminal is identical with the principle of the long-range nuclear-phase method in embodiment two, embodiment one
With two in long-range nuclear-phase method various change mode and instantiation be equally applicable to the second collection terminal, by foregoing to remote
The detailed description of journey nuclear-phase method, those skilled in the art are clear that the implementation of the present embodiment medium-long range nuclear-phase method
Mode, thus it is succinct for specification, will not be described in detail herein.
Embodiment three
Based on the same inventive concept with first aspect medium-long range nuclear-phase method, third aspect present invention is additionally provided far
Journey phase checking device, as shown in Fig. 2 including：
First acquisition module 201, the first voltage induced signal for obtaining first line, wherein, the first voltage
Induced signal is gathered by the first collection terminal according to gps signal；
Second obtains module 202, the second voltage induced signal for obtaining the second circuit, wherein, the second voltage
Induced signal is gathered by the second collection terminal according to the gps signal；
3rd obtains module 203, for according to the first voltage induced signal and the second voltage induced signal, obtaining
Obtain the phase comparative result of the first line and second circuit.
Optionally, in the device that the present invention is provided, the 3rd acquisition module is additionally operable to：
The first voltage induced signal is converted into first phase data；
The second voltage induced signal is converted into second phase data；
Judge the first phase data with the second phase data difference whether more than preset value；
If being more than, the phase comparative result is out-phase；
Otherwise, then the phase comparative result is same phase.
Optionally, in the device that the present invention is provided, described device also includes：
Judge module, for judging whether the first line is same AC synchronous net with second circuit.
Optionally, in the device that the present invention is provided, the judge module is additionally operable to：
Obtain the first voltage frequency of the first line；
Obtain the second voltage frequency of second circuit；
Obtain the comparative result of the first voltage frequency and the second voltage frequency；
According to the comparative result, judge whether the first line is same AC synchronous net with second circuit.
The various change mode and instantiation of the long-range nuclear-phase method in embodiment one are equally applicable to the present embodiment
Long-range phase checking device, by the foregoing detailed description to long-range nuclear-phase method, those skilled in the art are clear that this
The implementation of embodiment medium-long range phase checking device, thus it is succinct for specification, will not be described in detail herein.
Said one or multiple technical schemes in the embodiment of the present invention, at least imitate with following one or more technology
Really：
The method and apparatus that the present invention is provided, by the first voltage induced signal and second circuit that obtain first line
Second voltage induced signal, and according to the first voltage induced signal and the second voltage induced signal, obtains described the
The phase comparative result of one circuit and second circuit.Because remote terminal can obtain the first collection terminal according to gps signal
Second induced signal that gather according to gps signal of first induced signal and the second collection terminal of collection, i.e. the first acquisition terminal with
Corresponding voltage induced signal can be sent to remote terminal by the second acquisition terminal respectively, and the first collection terminal and second is gathered
Short-range communication need not be carried out between end, is only responsible for gathering signal respectively, such first collection terminal and the second collection terminal can be with
Remote capture is realized, then first induced signal and the second induced signal of collection is processed respectively by remote terminal,
The phase comparative result of first line and the second circuit is drawn, solving nuclear-phase method in the prior art, to there is nuclear phase closer to the distance
Technical problem, realize the technique effect of remote nuclear phase.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.And, the present invention can be used and wherein include the computer of computer usable program code at one or more
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) is produced
The form of product.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram are described.It should be understood that every first-class during flow chart and/or block diagram can be realized by computer program instructions
The combination of flow and/or square frame in journey and/or square frame and flow chart and/or block diagram.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices
The device of the function of being specified in present one flow of flow chart or multiple one square frame of flow and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in can guide computer or other programmable data processing devices with spy
In determining the computer-readable memory that mode works so that instruction of the storage in the computer-readable memory is produced and include finger
Make the manufacture of device, the command device realize in one flow of flow chart or multiple one square frame of flow and/or block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented treatment, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (10)
1. long-range nuclear-phase method, it is characterised in that including：
Obtain first line first voltage induced signal, wherein, the first voltage induced signal by the first collection terminal according to
Gps signal is gathered；
Obtain the second voltage induced signal of the second circuit, wherein, the second voltage induced signal by the second collection terminal according to
The gps signal collection；
According to the first voltage induced signal and the second voltage induced signal, the first line and described second is obtained
The phase comparative result of circuit.
2. the method for claim 1, it is characterised in that described according to the first voltage induced signal and described second
Voltage induced signal, obtains the phase comparative result of the first line and second circuit, including：
The first voltage induced signal is converted into first phase data；
The second voltage induced signal is converted into second phase data；
Judge the first phase data with the second phase data difference whether more than preset value；
If being more than, the phase comparative result is out-phase；
Otherwise, then the phase comparative result is same phase.
3. the method for claim 1, it is characterised in that according to the first voltage induced signal and second electricity
Pressure sensitivity induction signal, before obtaining phase comparative result, also includes：
Judge whether the first line is same AC synchronous net with second circuit.
4. method as claimed in claim 3, it is characterised in that described to judge whether are the first line and second circuit
It is same AC synchronous net, including：
Obtain the first voltage frequency of the first line；
Obtain the second voltage frequency of second circuit；
Obtain the comparative result of the first voltage frequency and the second voltage frequency；
According to the comparative result, judge whether the first line is same AC synchronous net with second circuit.
5. long-range nuclear-phase method, it is characterised in that including：
Obtain gps signal；
According to the gps signal, the first voltage induced signal of first line is obtained；
The first voltage induced signal is sent to remote terminal, so that the remote terminal senses according to the first voltage
Signal carries out nuclear phase.
6. long-range nuclear-phase method, it is characterised in that including：
Obtain gps signal；
According to the gps signal, the second voltage induced signal of the second circuit is obtained；
The second voltage induced signal is sent to remote terminal, so that the remote terminal senses according to the second voltage
Signal carries out nuclear phase.
7. long-range phase checking device, it is characterised in that including：
First acquisition module, the first voltage induced signal for obtaining first line, wherein, the first voltage induced signal
Gathered according to gps signal by the first collection terminal；
Second obtains module, the second voltage induced signal for obtaining the second circuit, wherein, the second voltage induced signal
Gathered according to the gps signal by the second collection terminal；
3rd obtains module, for according to the first voltage induced signal and the second voltage induced signal, obtaining described
The phase comparative result of first line and second circuit.
8. device as claimed in claim 6, it is characterised in that the 3rd acquisition module is additionally operable to：
The first voltage induced signal is converted into first phase data；
The second voltage induced signal is converted into second phase data；
Judge the first phase data with the second phase data difference whether more than preset value；
If being more than, the phase comparative result is out-phase；
Otherwise, then the phase comparative result is same phase.
9. device as claimed in claim 6, it is characterised in that described device also includes：
Judge module, for judging whether the first line is same AC synchronous net with second circuit.
10. device as claimed in claim 9, it is characterised in that the judge module is additionally operable to：
Obtain the first voltage frequency of the first line；
Obtain the second voltage frequency of second circuit；
Obtain the comparative result of the first voltage frequency and the second voltage frequency；
According to the comparative result, judge whether the first line is same AC synchronous net with second circuit.
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| CN104062513A (en) * | 2014-05-20 | 2014-09-24 | 东南大学 | Secondary phase detecting instrument and method |
| CN104092738A (en) * | 2014-06-25 | 2014-10-08 | 国网福建南安市供电有限公司 | Long-distance nuclear phase system and method based on wireless Internet |
| CN204945246U (en) * | 2015-05-20 | 2016-01-06 | 西安双英科技有限公司 | Based on the long-range phase tester of GPS and common network |
| CN105021891A (en) * | 2015-08-03 | 2015-11-04 | 国家电网公司 | Power distribution network base station type nuclear phase apparatus |
| CN105785143A (en) * | 2016-04-22 | 2016-07-20 | 国家电网公司 | Online low-voltage line phase checking device and phase checking method thereof |
| CN105929258A (en) * | 2016-05-10 | 2016-09-07 | 国网江苏省电力公司电力科学研究院 | Transformer substation starting test wireless nuclear phase debugging method |
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Application publication date: 20170613 |