CN109738714A - The method and device of secondary nuclear phase - Google Patents
The method and device of secondary nuclear phase Download PDFInfo
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- CN109738714A CN109738714A CN201910213135.9A CN201910213135A CN109738714A CN 109738714 A CN109738714 A CN 109738714A CN 201910213135 A CN201910213135 A CN 201910213135A CN 109738714 A CN109738714 A CN 109738714A
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Abstract
The present invention is suitable for substation's technical field, provide a kind of method and device of secondary nuclear phase, the described method includes: obtaining the three-phase voltage data of current working line, and the three-phase voltage data for the new equipment that subtabulation end is wirelessly sent is obtained, whether the three-phase voltage data of the three-phase voltage data and current working line that judge new equipment meets preset reference condition；If meeting, according to the three-phase voltage data of current working line and the three-phase voltage data of new equipment, determining new equipment, whether phase is consistent with the voltage of current working line.The present invention can be avoided the cumbersome of long cable connection nuclear phase by the communication at major-minor table end, and after the three-phase voltage data at both ends meets preset reference condition respectively, carry out the phase verification of new equipment and current working line, so that it is determined that new equipment is with the voltage of current working line, whether phase is consistent, can guarantee the accuracy of secondary nuclear phase.
Description
Technical field
The invention belongs to substation's technical field more particularly to a kind of method and devices of secondary nuclear phase.
Background technique
Before new route, transformer in substation put into operation, the secondary voltage phase of the voltage transformer of new equipment is necessary
It is consistent with system voltage phase.During newly-built substation or new route put into operation, before new equipment electrification and non-on-load, need
Nuclear phase is carried out to the secondary voltage of new equipment, prevented after taking load, because secondary voltage phase error causes relay protection to fill
Set movement.So-called secondary nuclear phase refers in the three-phase voltage phase of voltage transformer secondary side verification new equipment and substation
Whether the equipment three-phase phase of operation is completely the same, inconsistent not allow new equipment on-load access system.
The secondary voltage of power transformation station equipment is often drawn by voltage transformer secondary side, accesses relay protection chamber through cable
In interior voltage switching screen, therefore the electricity of nuclear phase work certain working line usually in the voltage switching screen of new equipment and substation
It is carried out between pressure switching screen.In view of reality, the distance between voltage switching screen of new equipment and certain working line often farther out,
Even not in a relay protection room, in order to carry out nuclear phase work, need to place between two sides voltage is transferred and shielded interim long
Cable recycles multimeter by the voltage of new equipment out of voltage switching screen guides to selected working line voltage switching screen
Alternating voltage shelves are by mutually checking.This method heavy workload, relay protection professional need to take a significant amount of time progress secondary
The work of nuclear phase check and correction.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of method and device of secondary nuclear phase, to solve in the prior art
Secondary nuclear phase heavy workload, the problem of time-consuming and inefficiency.
The first aspect of the embodiment of the present invention provides a kind of secondary nuclear-phase method, is applied to main table end, comprising:
The three-phase voltage data of current working line is obtained, and obtains the new equipment that subtabulation end is wirelessly sent
Three-phase voltage data, the three-phase voltage data of the new equipment are to meet the three-phase voltage data of preset reference condition；
Whether the phase difference and amplitude for judging the three-phase voltage data of the current working line meet the preset reference
Condition；
If the phase difference and amplitude of the three-phase voltage data of the current working line meet preset reference condition, basis
The three-phase voltage data of the current working line and the three-phase voltage data of the new equipment, determine the voltage of the new equipment
Whether phase is consistent with the voltage-phase of the current working line.
The second aspect of the embodiment of the present invention provides a kind of secondary nuclear-phase method, is applied to subtabulation end, comprising:
Obtain the three-phase voltage data of new equipment；
Whether the phase difference and amplitude for judging the three-phase voltage data of the new equipment meet preset reference condition；
If the phase difference and amplitude of the three-phase voltage data of the new equipment meet preset reference condition, send described new
The three-phase voltage data of equipment is to main table end.
The third aspect of the embodiment of the present invention provides a kind of secondary phase checking device, is applied to main table end, comprising:
Voltage data obtains module, for obtaining the three-phase voltage data of current working line, and obtains subtabulation end and passes through
The three-phase voltage data for the new equipment that wireless mode is sent, the three-phase voltage data of the new equipment are to meet preset reference condition
Three-phase voltage data；
Base condition judgment module, the phase difference and amplitude of the three-phase voltage data for judging the current working line
Whether the preset reference condition is met；
Secondary nuclear phase module, if the phase difference of the three-phase voltage data for the current working line and amplitude meet it is pre-
If base condition, then according to the three-phase voltage data of the current working line and the three-phase voltage data of the new equipment, really
Whether the voltage-phase of the fixed new equipment is consistent with the voltage-phase of the current working line.
The fourth aspect of the embodiment of the present invention provides a kind of terminal device, including memory, processor and is stored in
In the memory and the computer program that can run on the processor, when the processor executes the computer program
The step of realizing secondary nuclear-phase method as described above.
5th aspect of the embodiment of the present invention provides a kind of computer readable storage medium, the computer-readable storage
Media storage has computer program, and the step of secondary nuclear-phase method as described above is realized when the computer program is executed by processor
Suddenly.
Existing beneficial effect is the embodiment of the present invention compared with prior art: the embodiment of the present invention obtains current fortune first
The three-phase voltage data of row line, and obtain the three-phase voltage data for the new equipment that subtabulation end is wirelessly sent；Then
Judge whether the phase difference of the three-phase voltage data of the current working line and amplitude meet the preset reference condition；If institute
The phase difference and amplitude for stating the three-phase voltage data of current working line meet preset reference condition, then according to the current operation
The three-phase voltage data of the three-phase voltage data of route and the new equipment determines that the voltage-phase of the new equipment is worked as with described
Whether the voltage-phase of preceding working line is consistent.The embodiment of the present invention obtains the three-phase voltage data of new equipment by subtabulation end,
And carry out that three-phase voltage data is sent to main table end with wireless communication mode after preset condition judgement, to avoid temporarily putting
Set the working link of long cable, the three-phase voltage data of new equipment and current working line is preset at corresponding table end respectively
Condition judgement, to avoid generating in work progress showing for test apparatus wiring error during part line mistake or nuclear phase
As, and after the three-phase voltage data at both ends meets preset reference condition respectively, carry out the phase of new equipment and current working line
Position verification, so that it is determined that new equipment is with current working line voltage, whether phase is consistent, can guarantee the accuracy of secondary nuclear phase.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural schematic diagram of secondary nuclear phase method, system provided in an embodiment of the present invention；
Fig. 2 is the implementation process schematic diagram of secondary nuclear-phase method provided in an embodiment of the present invention；
Fig. 3 is the flow diagram of S202 in Fig. 2 provided in an embodiment of the present invention；
Fig. 4 is three-phase voltage phase schematic diagram provided in an embodiment of the present invention；
Fig. 5 is the flow diagram of S301 in Fig. 3 provided in an embodiment of the present invention；
Fig. 6 is the flow diagram of S203 in Fig. 2 provided in an embodiment of the present invention；
Fig. 7 is the flow diagram of S602 in Fig. 6 provided in an embodiment of the present invention；
Fig. 8 is the flow diagram of S605 in Fig. 6 provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram of secondary kernel phase system provided in an embodiment of the present invention；
Figure 10 is the structural schematic diagram of terminal device provided in an embodiment of the present invention；
Figure 11 is the schematic diagram of the A phase voltage waveform of new equipment provided in an embodiment of the present invention and current working line；
Figure 12 error amount vector schematic diagram provided in an embodiment of the present invention.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific
The present invention also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, in case unnecessary details interferes description of the invention.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
As shown in Figure 1, Fig. 1 shows the structure of secondary kernel phase system 1 provided by one embodiment of the present invention comprising:
Main table end 11 and subtabulation end 12, main table end 11 are placed in current running equipment end, and subtabulation end 12 is placed in new equipment end, main table end 11 with
By wireless communication, main table end 11 and subtabulation end 12 respectively include four test pencils, four test pencils point at main table end 11 at subtabulation end 12
Voltage switching screen 13 inner terminals row A, B, C, the N for not accessing current working line, acquire the secondary coil of current working line
Three-phase voltage data, four test pencils at subtabulation end 12 be respectively connected to new equipment secondary side voltage switching screen 14 inner terminals row A, B,
C, N acquires the three-phase voltage data of the voltage transformer secondary side of new equipment.Four test pencils can be set to different colors,
Specifically, corresponding A, tetra- terminals of B, C, N test pencil color be respectively it is yellow, green, red, black.Wherein, test pencil N accesses new equipment
Or the A phase electricity between AN terminal is detected at the neutral point of current working line, main table end 11 with subtabulation end 12 by four test pencils respectively
B phase voltage between pressure, the end BN and the C phase voltage between CN terminal.
Fig. 2 shows a kind of implementation process for secondary nuclear-phase method that one embodiment of the present of invention provides, the present embodiment
Process executing subject can be main table end 11, details are as follows for process:
S201: obtaining the three-phase voltage data of current working line, and obtains what subtabulation end 12 was wirelessly sent
The three-phase voltage data of new equipment, the three-phase voltage data of the new equipment are the three-phase voltage number for meeting preset reference condition
According to.
In the present embodiment, main table end 11 obtains the three-phase voltage data of current working line, three-phase by four test pencils
Voltage data respectively includes A phase voltage data, B phase voltage data and C phase voltage data, which is analog quantity,
Subtabulation end 12 obtains the three-phase voltage data of the secondary inductance transformer of new equipment by four test pencils, and judges the three of new equipment
Whether the amplitude and phase difference of phase voltage data meet preset reference condition, if so, will meet the three of preset reference condition
Phase voltage data are converted to digital quantity from analog quantity, and send the three-phase voltage data of digital quantity to main table end 11, if it is not, then examining
Whether the wiring looked between voltage switching screen respective terminal row and the voltage transformer ontology secondary side of new equipment is wrong, and is examining
Survey it is errorless after resurvey the three-phase voltage data of new equipment, until the amplitude of the three-phase voltage data of new equipment and phase difference symbol
Preset reference condition is closed, then the three-phase voltage data for meeting preset reference condition is converted into digital quantity from analog quantity, and send
The three-phase voltage data of digital quantity is to main table end 11.
When main table end 11 gets the three-phase voltage data of the new equipment of the transmission of subtabulation end 12, by the three-phase electricity of new equipment
Data are pressed to be converted to analog quantity by digital quantity.
S202: it is described default to judge whether the phase difference of the three-phase voltage data of the current working line and amplitude meet
Base condition.
In the present embodiment, after main table end 11 obtains the three-phase voltage data of current working line, it is also desirable to which judgement is current
Whether the phase difference and amplitude of the three-phase voltage data of working line meet preset reference condition, if so, continue subsequent step,
If it is not, whether the test connection then detected between main table end 11 and the voltage switching screen terminal block of current working line is wrong, and
Detecting three-phase voltage data that is errorless rear and resurveying current working line.
S203: if the phase difference of the three-phase voltage data of the current working line and amplitude meet preset reference condition,
Then according to the three-phase voltage data of the current working line and the three-phase voltage data of the new equipment, the new equipment is determined
Voltage-phase it is whether consistent with the voltage-phase of the current working line.
In the present embodiment, the phase of the three-phase voltage data of current working line and the three-phase voltage data of new equipment is checked
Whether position is consistent, if unanimously, it is determined that the success of new equipment nuclear phase, new equipment can access current working line with on-load.If no
Unanimously, then new equipment cannot the current working line of on-load access.
From above-described embodiment it is found that the embodiment of the present invention obtains the three-phase voltage data of current working line first, and obtain
The three-phase voltage data for the new equipment for taking subtabulation end 12 wirelessly to send；Then judge the three of the current working line
Whether the phase difference and amplitude of phase voltage data meet the preset reference condition；If the three-phase voltage of the current working line
The phase difference and amplitude of data meet preset reference condition, then according to the three-phase voltage data of the current working line and described
The three-phase voltage data of new equipment, determine the new equipment voltage-phase and the current working line voltage-phase whether
Unanimously.The present invention obtains the three-phase voltage data of new equipment by subtabulation end 12, and will meet the three-phase voltage after preset condition
Data are sent to main table end 11 with wireless communication mode, to avoid placing the working link of interim long cable, new equipment and
The three-phase voltage data of current working line carries out preset condition differentiation at corresponding table end respectively, constructs to avoid generating
In journey during part line mistake or nuclear phase the phenomenon that test apparatus wiring error, and distinguish in the three-phase voltage data at both ends
After meeting preset reference condition, the phase verification of new equipment and current working line is carried out, so that it is determined that new equipment and current fortune
Whether phase is consistent for row line voltage, can guarantee the accuracy of secondary nuclear phase.
In the present embodiment, it before carrying out secondary nuclear phase, needs to set time main table end 11 and subtabulation end 12, to protect
The time consistency at main table end 11 and subtabulation end 12 during card nuclear phase.For the accuracy for guaranteeing nuclear phase result, it is preferable that main table end 11
It is less than or equal to 1ms with the relative time error at subtabulation end 12.The data that main table end 11 and subtabulation end 12 compare are in same acquisition
When inscribe.
In the present embodiment, the three-phase voltage data includes three-phase voltage instantaneous value and acquisition moment, S201 in Fig. 2
Specific implementation flow, comprising:
The three-phase voltage instantaneous value of the current working line of preset quantity is obtained according to the default sampling period, and is recorded
The acquisition moment of each three-phase voltage instantaneous value of the current working line.
In the present embodiment, in order to guarantee the accuracy of secondary nuclear phase, present count can be acquired according to the default sampling period
The three-phase voltage instantaneous value of the current working line of amount, to carry out secondary core according to the three-phase voltage instantaneous value of preset quantity
Phase, avoiding the three-phase voltage instantaneous value at a certain moment, there are the phenomenons that error generates nuclear phase mistake.Optionally, the sampling period is preset
It can be 1ms, preset quantity can be 20, and every 1ms acquires the three-phase voltage instantaneous value of a current working line, thus
To 20 three-phase voltage instantaneous values.
In the present embodiment, likewise, subtabulation end 12 is consistent with the default sampling period at main table end 11 and preset quantity.
Further, it in order to which the data for guaranteeing that main table end 11 is compared with subtabulation end 12 are acquired to synchronization, need to record every
The acquisition moment of one acquisition three-phase voltage instantaneous value, by marking when each acquisition at corresponding three-phase voltage instantaneous value,
So as to according to the acquisition moment, it is ensured that the three-phase voltage instantaneous value that main table end 11 is compared with subtabulation end 12 is in same time tag
Under, to guarantee the accuracy of secondary nuclear phase.
As shown in figure 3, in one embodiment of the invention, the three-phase voltage data further includes three-phase voltage virtual value
With three-phase voltage instantaneous value, the preset reference condition includes preset phase difference reference range and default magnitude references range；Fig. 3
The specific implementation flow of S202 in Fig. 2 is shown, details are as follows for process:
S301: it according to the three-phase voltage instantaneous value at each acquisition moment of the current working line, calculates described current
The three-phase voltage instantaneous value of working line alternate phase difference and three-phase voltage virtual value two-by-two.
In the present embodiment, can pass through
Calculate three-phase voltage virtual value；In formula (1), UAtIndicate the A phase voltage virtual value of current working line, UBtIt indicates
The B phase voltage virtual value of current working line, UCtIndicate the C phase voltage virtual value of current working line, UAtiIndicate current operation
Route acquires the A phase voltage instantaneous value at moment, U at i-thBtiIndicate that current working line acquires the B phase electricity at moment at i-th
Press instantaneous value, UCtiIndicate that current working line acquires the C phase voltage instantaneous value at moment at i-th, m indicates preset quantity.
In the present embodiment, the three-phase voltage virtual value of new equipment can also be calculated by the above method.
Summarize in the present embodiment, according to three-phase voltage instantaneous value, calculate the alternate phase difference of AB, BC alternate phase difference and
CA alternate phase difference.
In the present embodiment, Fig. 5 shows the phase alternate two-by-two for calculating current working line in Fig. 3 in step S301
The detailed process of difference, comprising:
S501: it according to the three-phase voltage instantaneous value at each acquisition moment of the current working line, calculates described current
The corresponding three-phase voltage phase angle of each acquisition moment of working line.
Specifically, pass through calculating
Obtain the corresponding three-phase voltage phase angle of each acquisition moment of current working line, in formula (2),Described in expression
The phase angle at i-th of A phase voltage acquisition moment of current working line,Indicate the of the B phase voltage of the current working line
The phase angle at i each acquisition moment,Indicate the phase angle at i-th of acquisition moment of the C phase voltage of the current working line.
S502: according to the three-phase voltage phase angle at each acquisition moment of the current working line, the current fortune is calculated
The first alternate phase difference initial value at each acquisition moment of row line, described first is alternate for the current working line
Any two in three-phase are alternate.
In the present embodiment, pass through calculating
Obtain phase difference alternate two-by-two.In formula (3),When indicating the AB voltage between phases i of the current working line
The phase angle difference at quarter,Indicate the phase angle difference at the BC voltage between phases i moment of the current working line,Work as described in expression
The phase angle difference at the CA voltage between phases i moment of preceding working line.
S503: being averaging the first of each acquisition moment of the current working line the alternate phase difference initial value,
Obtain the first alternate phase difference of the current working line.
In the present embodiment, pass through calculating
Obtain the phase difference alternate two-by-two of current working line.In formula (4),Indicate the current working line
AB alternate phase difference,Indicate the alternate phase difference of the BC of the current working line,Indicate the current operation
The CA of route alternate phase difference.
S302: judge the amplitude of the three-phase voltage virtual value of the current working line whether in the default amplitude base
In quasi- range.
In the present embodiment, if the specified virtual value of three-phase voltage is 60V, and there may be slight error when measuring, because
This, default magnitude references range can be set in 60V ± dV, fall in the amplitude of the three-phase voltage virtual value of current working line
When within the scope of 60V ± dV, then illustrate that the amplitude of the three-phase voltage virtual value of current working line is correct.
Specifically, d can take 1, then presetting magnitude references range is 59V~61V, and the three-phase voltage of current working line
Virtual value needs to meetThen illustrate that the amplitude of the three-phase voltage virtual value of current working line is correct.
S303: judge the phase difference alternate two-by-two of the current working line whether in the preset phase difference benchmark
In range.
In this example, three-phase voltage vector schematic diagram as shown in figure 4, A, B, C three-phase voltage phase clockwise two-by-two
Therefore it is 120 ° ± e ° that 120 ° of difference takes preset phase difference reference range, and taking e is 5 °, then preset phase difference reference range is 115 °
~125 °.
In the present embodiment, if the voltage phase difference alternate two-by-two of current working line meets above-mentioned formula (5) and current
The three-phase voltage virtual value of working line within the scope of default magnitude references, then illustrate the voltage switching screen of current working line with
Wiring is correct between main table end.
Likewise, subtabulation end 12 whether meet in the phase difference and amplitude of the three-phase voltage data for judging new equipment it is default
It when base condition, needs to judge whether the three-phase voltage virtual value of new equipment is being preset within the scope of magnitude references, and judges newly to set
Whether standby three-phase voltage instantaneous value is in preset phase difference reference range, if being all satisfied, illustrates that the phase sequence of new equipment is positive
Sequence and amplitude is correct.Specifically, whether the phase difference and amplitude for judging the three-phase voltage data of new equipment meet preset reference item
The detailed process of part is as described in above-mentioned S301 to S303.
As shown in fig. 6, in one embodiment of the invention, the new equipment includes step down side, shown in Fig. 6
The specific implementation flow of S203 in Fig. 2, details are as follows process:
S601: according to the three-phase voltage virtual value of the current working line, the three-phase of the current working line is calculated
Voltage peak.
In the present embodiment, when new equipment is high voltage side of transformer, when transformer medium voltage side, route, bus, if new equipment
Voltage circuit wiring is correct, then the three-phase voltage phase of new equipment is consistent with the three-phase voltage phase of current working line,
And when new equipment is step down side, if new equipment voltage circuit wiring is correct, the three-phase voltage of step down side
There are fixed skews for phase and the three-phase voltage phase of current working line, therefore, new equipment are divided into step down side
With the second equipment, nuclear phase is carried out using different methods to step down side and the second equipment respectively.
Three-phase voltage phase and current working line when new equipment is step down side, due to step down side
Three-phase voltage phase there are fixed skews, the direct three-phase to the three-phase voltage of step down side and current working line
Voltage progress nuclear phase calculating process is more complicated, therefore, can be based on transformer high pressure side in advance with phase transformer low-pressure side n
× 30 ° of principle, when obtaining the three-phase voltage data of current working line, due to the three-phase voltage phase of current working line
It is identical as the three-phase voltage phase of transformer high pressure side, therefore the three-phase voltage data of current working line is transformer height
The three-phase voltage data of medium voltage side, then by the method for phase transition, pass through the three-phase voltage instantaneous value of transformer high pressure side
Step down side three-phase voltage a reference value is extrapolated, thus by three-phase voltage a reference value and the three of actual step down side
Phase voltage instantaneous value compares, and completes the nuclear phase work of step down side.
Specifically, the three-phase voltage peak value of current working line is calculated according to formula (6) first.
In formula (6), UAm、UBmAnd UCmRespectively indicate A phase voltage peak value, B phase voltage peak value and the C phase of current running equipment
Voltage peak.
S602: according to the three-phase voltage instantaneous value at each acquisition moment of the current working line and the current operation
The three-phase voltage peak value of route calculates the voltage waveform initial phase angle of the current working line.
In the present embodiment, Fig. 7 shows the specific implementation flow of S602 in Fig. 6, and details are as follows for process:
S701: according to the three-phase voltage instantaneous value at each acquisition moment of the first phase of the current working line, described
The three-phase voltage peak value and the first phase initial phase angle calculation formula of current working line calculate each of current working line and adopt
Collect the initial phase angle initial value at moment, first phase is any phase in three-phase.
In the present embodiment, as shown in figure 11, Figure 11 shows the A phase voltage waveform of new equipment and current working line,
Wherein solid line is the voltage waveform of current working line, and dotted line is the voltage waveform of new equipment, UAmFor the A phase of current working line
Voltage peak, uAmFor the A phase voltage peak value of new equipment, UAt1For the A phase voltage wink at first acquisition moment of current working line
Duration, uAt1For the A phase voltage instantaneous value at first acquisition moment of new equipment.Any phase of current working line can be chosen
Three-phase voltage peak value and it is each acquisition the moment three-phase voltage instantaneous value, calculate each acquisition moment of current working line
Initial phase angle initial value, shown in the first phase initial phase angle calculation formula such as formula (7):
UAti=UAmsin(ωti+αi) orOr
If selecting A phase, the first phase that the 1st formula in formula (7) calculates each acquisition moment of current working line is chosen
Angle initial value, if selection B phase, chooses the first phase that the 2nd formula in formula (7) calculates each acquisition moment of current working line
Angle initial value, if selection C phase, chooses the first phase that the 3rd formula in formula (7) calculates each acquisition moment of current working line
Angle initial value.
S702: being averaging the initial phase angle initial value at each acquisition moment of the current working line, obtains described work as
The voltage waveform initial phase angle of preceding working line.
In the present embodiment, since the instantaneous voltage and voltage peak of taking a certain moment calculate voltage waveform initial phase angle
There may be random biggish errors to adopt each of current working line to improve the accuracy of voltage waveform initial phase angle
The initial phase angle initial value for collecting the moment is averaging, and obtains the voltage waveform initial phase angle of current working line.According to the current operation
The voltage waveform initial phase angle of route, obtains the initial phase angle of the step down side；
S603: according to the voltage waveform initial phase angle of the current working line, the first phase of the step down side is obtained
Angle a reference value.
In the present embodiment, as shown in Figure 10, the voltage waveform first phase angular advance step down side of current working line
Initial phase angle n × 30 ° therefore can be calculated, be obtained by the plus-minus of the current form initial phase angle of current working line and n × 30 °
To the voltage waveform initial phase angle of step down side.
Specifically, by taking A phase as an example, the calculation formula of the voltage waveform initial phase angle of step down side are as follows:
In formula (8), the voltage waveform initial phase angle of α ' indication transformer low-pressure side, α indicates the voltage wave of current running equipment
Shape initial phase angle can be by the voltage waveform of current running equipment then in the voltage waveform initial phase angle of calculating transformer low-pressure side
Initial phase angle a reference value of the initial phase angle as step down side becomes according to the voltage waveform first phase angular advance of current working line
The principle of initial phase angle n × 30 ° of depressor low-pressure side obtains the voltage waveform initial phase angle of step down side.
S604: according to the three-phase voltage virtual value of the step down side, the three-phase of the step down side is calculated
Voltage peak.
In the present embodiment, it calculates and becomes according to the three-phase voltage virtual value of step down side using the method in S601
The three-phase voltage peak value of depressor low-pressure side.
S605: according to the three-phase voltage peak value of the step down side and the initial phase angle a reference value, the change is calculated
The three-phase voltage a reference value at depressor low-pressure side each acquisition moment.
In the present embodiment, the specific implementation flow of S605 includes: to pass through
Calculate the three-phase voltage a reference value at the step down side each acquisition moment.
In formula (9), u'AtiIndicate the A phase voltage a reference value at i-th of acquisition moment, u'BtiIndicate the B at i-th of acquisition moment
Phase voltage a reference value, u'CtiIndicate the C phase voltage a reference value at i-th of acquisition moment, uAmIndicate the A phase of the step down side
Voltage peak, uBmIndicate the B phase voltage peak value of the step down side, uCmIndicate the C phase voltage of the step down side
Peak value,T indicates the default sampling period, and n indicates the connection group alias of the transformer.
In the present embodiment, it is a variety of to be divided into Yd11, Yd9, Yd7, Yd5, Yd3, Yd1 etc. for the connection group of step down side
Connect group, the different other step down sides of connection group is different from the phase difference of high voltage side of transformer, according to formula (9),
The voltage peak and voltage waveform initial phase angle of step down side extrapolate the three-phase electricity at step down side each acquisition moment
Press a reference value.
S606: according to the three-phase voltage a reference value at the step down side each acquisition moment and corresponding three-phase voltage
Instantaneous value calculates first voltage difference average value.
In the present embodiment, Fig. 8 shows the specific implementation flow of S605 in Fig. 6, and details are as follows for process:
S801: according to the three-phase voltage a reference value at the step down side each acquisition moment and corresponding three-phase voltage
Instantaneous value, the first voltage for calculating the step down side each acquisition moment are poor.
In the present embodiment, first voltage difference includes poor the first A phase voltage, the first B phase voltage difference and the first C phase voltage
Difference, according to formula (10), the first voltage that step down side each acquisition moment can be calculated is poor.
Wherein, kAiIndicate that the first A phase voltage at i-th of acquisition moment is poor, kBiIndicate the first B phase at i-th of acquisition moment
Voltage difference, kCiIndicate that the first C phase voltage at i-th of acquisition moment is poor.
S802: the first voltage difference at acquisition moment each to the step down side is averaging, and it is poor to obtain first voltage
Average value.
In the present embodiment, according to formula (11), voltage difference average value can be calculated.
In formula (11), kAThe first voltage difference average value of indication transformer low-pressure side and the A phase of current working line, kBTable
Show first voltage difference average value of the step down side with the B phase of current working line, kCIndication transformer low-pressure side and current
The first voltage difference average value of the C phase of working line.
S607: if the first voltage difference average value is less than or equal to the first maximum voltage error, determine the transformation
The voltage-phase of device low-pressure side is consistent with the voltage-phase of the current running equipment.
In the present embodiment, due to that during nuclear phase, need to guarantee the relative instant difference at main table end 11 and subtabulation end 12 not
It is not more than 18 ° greater than 1ms, that is, angular error, according to the case where there are larger time differences analysis, by taking A phase as an example, according to height
The three-phase voltage data for pressing side, extrapolates step down side three-phase voltage data, the actual transformation acquired with subtabulation end 12
Angular error between the three-phase voltage data of device low-pressure side is 18 °, and error amount vector schematic diagram is as shown in figure 11, therefore,
According to trigonometric function, can calculate the first maximum voltage error is kAi=2uAtiSin9 ° can be calculated kAiWhen maximum
For 26.5V.Therefore, the first maximum voltage error of the present embodiment can be 26.5V, the first maximum voltage error of B, C phase
Calculation method is identical as A phase.
Based on above-mentioned each the first maximum voltage of phase error, when the first voltage difference average value of three-phase meets formula (12), then
Determine that the secondary nuclear phase of step down side is correct.
In one embodiment of the invention, the new equipment further includes the second equipment, second equipment include route,
High voltage side of transformer, transformer medium voltage side, bus, the detailed process of S203 includes: in Fig. 2
According to the three of the three-phase voltage instantaneous value at each acquisition moment of the current working line and second equipment
Phase voltage instantaneous value calculates second voltage difference average value；
If the second voltage difference average value is less than or equal to the second maximum voltage error, the second equipment core is determined
It is mutually correct.
In the present embodiment, in the second correct situation of equipment secondary side voltage circuit wiring, the second equipment and current fortune
The three-phase voltage phase of row line is consistent, therefore, only need to be according to the three of each acquisition moment of formula (13), current working line
The three-phase voltage instantaneous value of phase voltage instantaneous value and second equipment, both it is available it is each acquisition the moment three-phase voltage
Difference, wherein formula (13) are as follows:
In formula (13), k'AiIndicate that the second equipment and the A phase voltage at i-th of acquisition moment of current working line are poor, k'Bi
Indicate that the second equipment and the B phase voltage at i-th of acquisition moment of current working line are poor, k'CiIndicate the second equipment and current fortune
The C phase voltage at i-th of acquisition moment of row line is poor.
After calculating the three-phase electricity pressure difference at each acquisition moment, the three-phase electricity pressure difference at each acquisition moment is averaging,
Second voltage difference average value is obtained, shown in specific calculating process such as formula (14).
In formula (14), k'AIndicate second voltage difference average value of second equipment with the A phase of current working line, k'BIt indicates
The second voltage difference average value of second equipment and the B phase of current working line, k'CIndicate the second equipment and current working line
The second voltage difference average value of C phase.
In the present embodiment, in the second correct situation of equipment secondary side voltage circuit wiring, due to the second equipment with work as
The three-phase voltage phase of preceding working line is consistent, therefore, the three-phase voltage data of the second equipment substantially with current working line
Three-phase voltage data is identical, error very little, therefore, can be set the second maximum voltage error be 1V, then when the second equipment with work as
The second voltage difference average value of preceding working line meetsWhen, determine that the secondary nuclear phase of the second equipment is correct.
From above-described embodiment it is found that the embodiment of the present invention is by the way of wireless telecommunications, accurate long cable can be saved, can be saved
Go manpower and the time of the long cable of temporary laid.And secondary kernel phase system provided in this embodiment is suitble to nearly all in station set
Standby secondary nuclear phase work, provides the option of the equipment nuclear phase of " step down side " and " other the second equipment ".In addition, acquisition
After new used equipment voltage signal, according to the phase of program automatic checking new equipment secondary side and it can provide and current working line
Nuclear phase as a result, reduce the fault that artificially judges and time, improve nuclear phase working efficiency.
From above-described embodiment it is found that the main table end 11 of this system and subtabulation end 12 are equipped with 4 test pencils, can disposably acquire
Three-phase voltage, each potential winding only need to acquire 1 time can judge nuclear phase as a result, and in conventional method, multimeter has two
Test pencil needs a test pencil first fixed a certain phase for selecting current working line so when nuclear phase, and another test pencil is by mutually visiting
Survey the three-phase voltage of new equipment.And secondary kernel phase system 1 provided in this embodiment has four test pencils, can disposably acquire three-phase electricity
Pressure, eliminates by the link mutually verified, greatly reduces nuclear phase workload.
It should be understood that the size of the serial number of each step is not meant that the order of the execution order in above-described embodiment, each process
Execution sequence should be determined by its function and internal logic, the implementation process without coping with the embodiment of the present invention constitutes any limit
It is fixed.
Embodiment two
An embodiment provides a kind of secondary nuclear-phase methods, are applied to subtabulation end, detailed process is as follows:
Obtain the three-phase voltage data of new equipment；Whether the phase difference and amplitude for judging the three-phase voltage of the new equipment accord with
Close preset reference condition；If the phase difference and amplitude of the three-phase voltage of the new equipment meet preset reference condition, institute is sent
The three-phase voltage data of new equipment is stated to main table end.
From above-described embodiment it is found that the present embodiment is by obtaining the three-phase voltage data of new equipment at subtabulation end, and judge
Whether the three-phase voltage data of new equipment meets preset reference condition, can effectively detect the voltage transformer sheet of new equipment
The phenomenon that whether there is Miswire between body secondary side and voltage switching screen, to improve the accuracy of secondary nuclear phase.
Embodiment three
As shown in figure 9, Fig. 9 shows a kind of structure of secondary phase checking device 100, it is applied to main table end 11 comprising:
Voltage data obtains module 110, for obtaining the three-phase voltage data of current working line, and obtains subtabulation end 12
The three-phase voltage data of the new equipment wirelessly sent；
Base condition judgment module 120, the phase difference and amplitude of the three-phase voltage for judging the current working line
Whether the preset reference condition is met；
Secondary nuclear phase module 130, if the phase difference of the three-phase voltage for the current working line and amplitude meet it is pre-
If base condition, then according to the three-phase voltage data of the current working line and the three-phase voltage data of the new equipment, really
Whether the voltage-phase of the fixed new equipment is consistent with the voltage-phase of the current working line.
From above-described embodiment it is found that the embodiment of the present invention obtains the three-phase voltage data of current working line first, and obtain
The three-phase voltage data for the new equipment for taking subtabulation end 12 wirelessly to send；Then judge the three of the current working line
Whether the phase difference and amplitude of phase voltage data meet the preset reference condition；If the three-phase voltage of the current working line
The phase difference and amplitude of data meet preset reference condition, then according to the three-phase voltage data of the current working line and described
The three-phase voltage data of new equipment, determine the new equipment voltage-phase and the current working line voltage-phase whether
Unanimously.The present invention obtains the three-phase voltage data of new equipment by subtabulation end 12, and will meet the three-phase voltage after preset condition
Data are sent to main table end 11 with wireless communication mode, to avoid the working link for temporarily placing long cable, new equipment and
The three-phase voltage data of current working line carries out reference phase difference and amplitude check and correction at corresponding table end respectively, to avoid producing
The phenomenon that raw wiring error, and after the three-phase voltage data at both ends meets preset reference condition respectively, it carries out new equipment and works as
The phase of preceding working line is checked, so that it is determined that new equipment is with current working line voltage, whether phase is consistent, can guarantee two
The accuracy of secondary nuclear phase.
In one embodiment of the invention, the three-phase voltage data include three-phase voltage instantaneous value and acquisition the moment,
Voltage data obtains module 110
The three-phase voltage instantaneous value of the current working line of preset quantity is obtained according to the default sampling period, and is recorded
The acquisition moment of each three-phase voltage instantaneous value of the current working line.
In one embodiment of the invention, the three-phase voltage data further includes three-phase voltage virtual value, described default
Base condition includes preset phase difference reference range and default magnitude references range；Base condition judgment module 120 in Fig. 9 wraps
It includes:
Voltage value computing unit, the three-phase voltage for each acquisition moment according to the current working line are instantaneous
Value calculates the three-phase voltage instantaneous value of the current working line alternate phase difference and three-phase voltage virtual value two-by-two；
Amplitude judging unit, for judge the current working line three-phase voltage virtual value amplitude whether in institute
It states within the scope of default magnitude references；
Phase difference judging unit, for judging the phase difference alternate two-by-two of the current working line whether described
In preset phase difference reference range.
In one embodiment of the invention, the voltage value computing unit includes:
Phase calculation subelement, the three-phase voltage for each acquisition moment according to the current working line are instantaneous
Value calculates the corresponding three-phase voltage phase angle of each acquisition moment of the current working line；
Phase difference calculation of initial value subelement, for the three-phase electricity according to each acquisition moment of the current working line
Phase angle is pressed, the first alternate phase difference initial value at each acquisition moment of the current working line, first phase are calculated
Between be the current working line three-phase in it is any two alternate；
Phase difference calculating subelement, the first alternate phase for each acquisition moment to the current working line
Poor initial value is averaging, and obtains the first alternate phase difference of the current working line.
In one embodiment of the invention, new equipment includes step down side, and secondary nuclear phase module 130 includes:
First voltage peak computational unit calculates institute for the three-phase voltage virtual value according to the current working line
State the three-phase voltage peak value of current working line；
Initial phase angle computing unit, for the three-phase voltage instantaneous value according to each acquisition moment of the current working line
And the three-phase voltage peak value of the current working line, calculate the voltage waveform initial phase angle of the current working line；
Initial phase angle a reference value computing unit obtains institute for the voltage waveform initial phase angle according to the current working line
State the initial phase angle a reference value of step down side；
Second voltage peak computational unit calculates institute for the three-phase voltage virtual value according to the step down side
State the three-phase voltage peak value of step down side；
Voltage reference value computing unit, for according to the step down side three-phase voltage peak value and the initial phase angle
A reference value calculates the three-phase voltage a reference value at the step down side each acquisition moment；
First voltage difference average calculation unit, for the three-phase electricity according to the step down side each acquisition moment
A reference value and corresponding three-phase voltage instantaneous value are pressed, first voltage difference average value is calculated；
First nuclear phase unit, if being less than or equal to the first maximum voltage error for the first voltage difference average value,
Determine that the voltage-phase of the step down side is consistent with the voltage-phase of the current running equipment.
In the present embodiment, initial phase angle computing unit includes:
Initial phase angle calculation of initial value subelement, for each acquisition moment according to the first phase of the current working line
Three-phase voltage instantaneous value, the current working line three-phase voltage peak value and the first phase initial phase angle calculation formula, calculate institute
The initial phase angle initial value at each acquisition moment of current working line is stated, first phase is any phase in three-phase；
Initial phase angle computation subunit, the initial phase angle initial value for each acquisition moment to the current working line are asked
It is average, obtain the voltage waveform initial phase angle of the current working line.
In the present embodiment, voltage reference value computing unit includes:
Pass through
Calculate the three-phase voltage a reference value at the step down side each acquisition moment；
Wherein, u'AtiIndicate the A phase voltage a reference value at i-th of acquisition moment, u'BtiIndicate the B phase at i-th of acquisition moment
Voltage reference value, u'CtiIndicate the C phase voltage a reference value at i-th of acquisition moment, uAmIndicate the A phase electricity of the step down side
Voltage crest value, uBmIndicate the B phase voltage peak value of the step down side, uCmIndicate the C phase voltage peak of the step down side
Value,T indicates the default sampling period, and α indicates the voltage waveform initial phase angle, and n indicates the connection group of the transformer
Alias.
In the present embodiment, first voltage difference average calculation unit includes:
First voltage difference computation subunit, for the three-phase voltage base according to the step down side each acquisition moment
Quasi- value and corresponding three-phase voltage instantaneous value, the first voltage for calculating the step down side each acquisition moment are poor；
First voltage difference mean value calculation subelement, for the first electricity to the step down side each acquisition moment
Pressure difference is averaging, and obtains first voltage difference average value.
In the present embodiment, the new equipment further includes the second equipment, and second equipment includes route, transformer high-voltage
Side, transformer medium voltage side, bus, secondary nuclear phase module 130 include:
Second voltage difference average calculation unit, for the three-phase according to each acquisition moment of the current working line
The three-phase voltage instantaneous value of instantaneous voltage and second equipment calculates second voltage difference average value；
Second nuclear phase unit, if being less than or equal to the second maximum voltage error for the second voltage difference average value,
Determine that the second equipment nuclear phase is correct.
Example IV
Figure 10 is the schematic diagram for the terminal device that one embodiment of the invention provides.As shown in Figure 10, the terminal of the embodiment
Equipment 10 includes: processor 101, memory 102 and is stored in the memory 102 and can be on the processor 101
The computer program 103 of operation.The processor 101 realizes above-mentioned each secondary nuclear phase when executing the computer program 103
Step in embodiment of the method, such as step 201 shown in Fig. 2 is to 203.Alternatively, the processor 101 executes the computer
The function of each module/unit in above-mentioned each Installation practice, such as the function of module 110 to 130 shown in Fig. 9 are realized when program 103
Energy.
The computer program 103 can be divided into one or more module/units, one or more of moulds
Block/unit is stored in the memory 102, and is executed by the processor 101, to complete the present invention.It is one or
Multiple module/units can be the series of computation machine program instruction section that can complete specific function, and the instruction segment is for describing
Implementation procedure of the computer program 103 in the terminal device 10.
The terminal device 10 can be the calculating such as desktop PC, notebook, palm PC and cloud server and set
It is standby.The terminal device 10 may include, but be not limited only to, processor 101, memory 102.Those skilled in the art can manage
Solution, Fig. 6 is only the example of terminal device 10, does not constitute the restriction to terminal device 10, may include than illustrate it is more or
Less component perhaps combines certain components or different components, such as the terminal device 10 can also include that input is defeated
Equipment, network access equipment, bus etc. out.
Alleged processor 101 can be central processing unit (Central Processing Unit, CPU), can also be
Other general processors, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor
Deng.
The memory 102 can be the internal storage unit of the terminal device 10, such as the hard disk of terminal device 10
Or memory.The memory 102 is also possible to the External memory equipment of the terminal device 10, such as on the terminal device 10
The plug-in type hard disk of outfit, intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD)
Card, flash card (Flash Card) etc..Further, the memory 102 can also be both interior including the terminal device 10
Portion's storage unit also includes External memory equipment.The memory 102 is for storing the computer program and the terminal
Other programs and data needed for equipment 10.The memory 102, which can be also used for temporarily storing, have been exported or will
The data of output.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each function
Can unit, module division progress for example, in practical application, can according to need and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of described device is divided into different functional unit or module, more than completing
The all or part of function of description.Each functional unit in embodiment, module can integrate in one processing unit, can also
To be that each unit physically exists alone, can also be integrated in one unit with two or more units, it is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.In addition, each function list
Member, the specific name of module are also only for convenience of distinguishing each other, the protection scope being not intended to limit this application.Above system
The specific work process of middle unit, module, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in detail or remembers in some embodiment
The part of load may refer to the associated description of other embodiments.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
In embodiment provided by the present invention, it should be understood that disclosed device/terminal device and method, it can be with
It realizes by another way.For example, device described above/terminal device embodiment is only schematical, for example, institute
The division of module or unit is stated, only a kind of logical function partition, there may be another division manner in actual implementation, 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.Separately
A bit, shown or discussed mutual coupling or direct-coupling or communication connection can be through some interfaces, device
Or the INDIRECT COUPLING or communication connection of unit, it can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated module/unit be realized in the form of SFU software functional unit and as independent product sale or
In use, can store in a computer readable storage medium.Based on this understanding, the present invention realizes above-mentioned implementation
All or part of the process in example method, can also instruct relevant hardware to complete, the meter by computer program
Calculation machine program can be stored in a computer readable storage medium, the computer program when being executed by processor, it can be achieved that on
The step of stating each embodiment of the method.Wherein, the computer program includes computer program code, the computer program generation
Code can be source code form, object identification code form, executable file or certain intermediate forms etc..The computer-readable medium
It may include: any entity or device, recording medium, USB flash disk, mobile hard disk, magnetic that can carry the computer program code
Dish, CD, computer storage, read-only memory (ROM, Read-Only Memory), random access memory (RAM,
Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..It should be noted that described
The content that computer-readable medium includes can carry out increasing appropriate according to the requirement made laws in jurisdiction with patent practice
Subtract, such as does not include electric carrier signal and electricity according to legislation and patent practice, computer-readable medium in certain jurisdictions
Believe signal.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although referring to aforementioned reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution should all
It is included within protection scope of the present invention.
Claims (13)
1. a kind of secondary nuclear-phase method, which is characterized in that be applied to main table end, which comprises
The three-phase voltage data of current working line is obtained, and obtains the three-phase for the new equipment that subtabulation end is wirelessly sent
Voltage data, the three-phase voltage data of the new equipment are to meet the three-phase voltage data of preset reference condition；
Judge whether the phase difference of the three-phase voltage data of the current working line and amplitude meet the preset reference condition；
If the phase difference and amplitude of the three-phase voltage data of the current working line meet preset reference condition, according to
The current three-phase voltage data of working line and the three-phase voltage data of the new equipment, determine the voltage-phase of the new equipment
It is whether consistent with the voltage-phase of the current working line.
2. secondary nuclear-phase method as described in claim 1, which is characterized in that the three-phase voltage data includes three-phase voltage wink
Duration and acquisition moment, the three-phase voltage data for obtaining current working line, comprising:
The three-phase voltage instantaneous value of the current working line of preset quantity is obtained according to the default sampling period, and described in record
The acquisition moment of each three-phase voltage instantaneous value of current working line.
3. secondary nuclear-phase method as claimed in claim 2, which is characterized in that the three-phase voltage data further includes three-phase voltage
Virtual value, the preset reference condition include preset phase difference reference range and default magnitude references range；Described in the judgement
Whether the phase difference and amplitude of the three-phase voltage data of current working line meet preset reference condition, comprising:
According to the three-phase voltage instantaneous value at each acquisition moment of the current working line, the current working line is calculated
Three-phase voltage instantaneous value alternate phase difference and three-phase voltage virtual value two-by-two；
Judge the amplitude of the three-phase voltage virtual value of the current working line whether within the scope of the default magnitude references；
Judge the phase difference alternate two-by-two of the current working line whether in the preset phase difference reference range.
4. secondary nuclear-phase method as claimed in claim 3, which is characterized in that described according to each of the current working line
The three-phase voltage instantaneous value at moment is acquired, the phase difference alternate two-by-two of the current working line is calculated, comprising:
According to the three-phase voltage instantaneous value at each acquisition moment of the current working line, the current working line is calculated
Each acquisition moment corresponding three-phase voltage phase angle；
According to the three-phase voltage phase angle at each acquisition moment of the current working line, each of the current working line is calculated
The first alternate phase difference initial value at a acquisition moment, times in the described first alternate three-phase for the current working line
One liang alternate；
The first of each acquisition moment of the current working line alternate phase difference initial value is averaging, described work as is obtained
The alternate phase difference of the first of preceding working line.
5. secondary nuclear-phase method as claimed in claim 4, which is characterized in that the new equipment includes step down side, institute
The three-phase voltage data for stating the three-phase voltage data and the new equipment according to the current working line, determines the new equipment
Voltage-phase it is whether consistent with the voltage-phase of the current working line, comprising:
According to the three-phase voltage virtual value of the current working line, the three-phase voltage peak value of the current working line is calculated；
According to the three of the three-phase voltage instantaneous value at each acquisition moment of the current working line and the current working line
Phase voltage peak value calculates the voltage waveform initial phase angle of the current working line；
According to the voltage waveform initial phase angle of the current working line, the initial phase angle a reference value of the step down side is obtained；
According to the three-phase voltage virtual value of the step down side, the three-phase voltage peak value of the step down side is calculated；
According to the three-phase voltage peak value of the step down side and the initial phase angle a reference value, the step down side is calculated
The three-phase voltage a reference value at each acquisition moment；
According to the three-phase voltage a reference value at the step down side each acquisition moment and corresponding three-phase voltage instantaneous value, meter
Calculate first voltage difference average value；
If the first voltage difference average value is less than or equal to the first maximum voltage error, the step down side is determined
Voltage-phase is consistent with the voltage-phase of the current running equipment.
6. secondary nuclear-phase method as claimed in claim 5, which is characterized in that described according to each of the current working line
The three-phase voltage instantaneous value at moment and the three-phase voltage peak value of the current working line are acquired, the current working line is calculated
Voltage waveform initial phase angle, comprising:
According to the three-phase voltage instantaneous value at each acquisition moment of the first phase of the current working line, the current operation line
The three-phase voltage peak value on road and the first phase initial phase angle calculation formula calculate the first of each acquisition moment of the current working line
Phase angle initial value, first phase are any phase in three-phase；
The initial phase angle initial value at each acquisition moment of the current working line is averaging, the current working line is obtained
Voltage waveform initial phase angle.
7. secondary nuclear-phase method as claimed in claim 5, which is characterized in that the three-phase according to the step down side
Voltage peak and the initial phase angle a reference value calculate the three-phase voltage a reference value at the step down side each acquisition moment,
Include:
Pass through
Calculate the three-phase voltage a reference value at the step down side each acquisition moment；
Wherein, u 'AtiIndicate the A phase voltage a reference value at i-th of acquisition moment, u 'BtiIndicate the B phase voltage at i-th of acquisition moment
A reference value, u 'CtiIndicate the C phase voltage a reference value at i-th of acquisition moment, uAmIndicate the A phase voltage peak of the step down side
Value, uBmIndicate the B phase voltage peak value of the step down side, uCmIndicate the C phase voltage peak value of the step down side,T indicates the default sampling period, and α indicates the voltage waveform initial phase angle, and n indicates the connection group of the transformer
Number.
8. secondary nuclear-phase method as claimed in claim 5, which is characterized in that described to be adopted according to the step down side is each
The three-phase voltage a reference value at collection moment and corresponding three-phase voltage instantaneous value calculate first voltage difference average value, comprising:
According to the three-phase voltage a reference value at the step down side each acquisition moment and corresponding three-phase voltage instantaneous value, meter
The first voltage for calculating the step down side each acquisition moment is poor；
The first voltage difference at acquisition moment each to the step down side is averaging, and obtains first voltage difference average value.
9. such as the described in any item secondary nuclear-phase methods of claim 5 to 8, which is characterized in that the new equipment further includes second
Equipment, second equipment include route, high voltage side of transformer, transformer medium voltage side, bus, described according to the current operation
The three-phase voltage data of the three-phase voltage data of route and the new equipment determines that the voltage-phase of the new equipment is worked as with described
Whether the voltage-phase of preceding working line is consistent, comprising:
According to the three-phase voltage instantaneous value at each acquisition moment of the current working line and the three-phase electricity of second equipment
Instantaneous value is pressed, second voltage difference average value is calculated；
If the second voltage difference average value is less than or equal to the second maximum voltage error, the second equipment nuclear phase is being determined just
Really.
10. a kind of secondary nuclear-phase method, which is characterized in that be applied to subtabulation end, comprising:
Obtain the three-phase voltage data of new equipment；
Whether the phase difference and amplitude for judging the three-phase voltage data of the new equipment meet preset reference condition；
If the phase difference and amplitude of the three-phase voltage data of the new equipment meet preset reference condition, the new equipment is sent
Three-phase voltage data to main table end.
11. a kind of secondary phase checking device, which is characterized in that be applied to main table end, described device includes:
Voltage data obtains module, for obtaining the three-phase voltage data of current working line, and obtains subtabulation end and passes through wirelessly
The three-phase voltage data for the new equipment that mode is sent, the three-phase voltage data of the new equipment are meet preset reference condition three
Phase voltage data；
Base condition judgment module, for judge the three-phase voltage data of the current working line phase difference and amplitude whether
Meet the preset reference condition；
Secondary nuclear phase module, if the phase difference of the three-phase voltage data for the current working line and amplitude meet default base
Floating screed part determines institute then according to the three-phase voltage data of the current working line and the three-phase voltage data of the new equipment
Whether the voltage-phase for stating new equipment is consistent with the voltage-phase of the current working line.
12. a kind of terminal device, including memory, processor and storage are in the memory and can be on the processor
The computer program of operation, which is characterized in that the processor realizes such as claim 1 to 9 when executing the computer program
The step of any one the method or method as claimed in claim 10.
13. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, and feature exists
In realization any one of such as claim 1 to 9 the method or such as claim 10 when the computer program is executed by processor
The step of the method.
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| CN110196359A (en) * | 2019-06-17 | 2019-09-03 | 湖北工业大学 | The nuclear phase exception localization method of low-voltage distribution system |
| CN110220545A (en) * | 2019-07-03 | 2019-09-10 | 国家电网有限公司 | Primary equipment instrument signal checking method, device and terminal device |
| CN111308397A (en) * | 2020-02-26 | 2020-06-19 | 广东电网有限责任公司 | Method for verifying connection group state of three-phase transformer |
| CN111521887A (en) * | 2020-05-07 | 2020-08-11 | 西安热工研究院有限公司 | 380V power supply-based high-voltage station service power supply nuclear phase system and method |
| CN111864559A (en) * | 2020-06-30 | 2020-10-30 | 国网辽宁省电力有限公司营口供电公司 | 400-volt bypass switch, nuclear phase current and voltage monitoring device and using method |
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| CN111308397A (en) * | 2020-02-26 | 2020-06-19 | 广东电网有限责任公司 | Method for verifying connection group state of three-phase transformer |
| CN111521887A (en) * | 2020-05-07 | 2020-08-11 | 西安热工研究院有限公司 | 380V power supply-based high-voltage station service power supply nuclear phase system and method |
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| CN112051448A (en) * | 2020-10-21 | 2020-12-08 | 国网新疆电力有限公司乌鲁木齐供电公司 | Intelligent multi-path voltage phase checking instrument for transformer substation and control method thereof |
| CN112051448B (en) * | 2020-10-21 | 2023-06-06 | 国网新疆电力有限公司乌鲁木齐供电公司 | Intelligent multi-path voltage phase detector for transformer substation and control method thereof |
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