CN109946640A - Special transformer terminals decompression defluidization judgment method based on metering automation system data - Google Patents
Special transformer terminals decompression defluidization judgment method based on metering automation system data Download PDFInfo
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Abstract
The invention discloses the special transformer terminals decompression defluidization judgment method based on metering automation system data, include the following steps: that step 100, analysis platform obtain the voltage of special transformer terminals, current parameters value from metering automation system flowback database；After step 200, analysis platform get the voltage of special transformer terminals, current parameters value, determine whether corresponding specially transformer terminals generate decompression, defluidization failure by determination module built in it；Data based on the acquisition of metering automation system main website, and the data are carried out with autonomous analysis, to judge whether there is the presence of decompression defluidization phenomenon, and a series of pretreatment is carried out to data, be conducive to data analyst and true anomalous event is accurately positioned, shortens the time of failure defect elimination closed loop.Operations staff is measured without the measurement data directly facing magnanimity, but directly result can be determined according to the result of system-computed, the difficulty in computation in actual motion treatment process is reduced, improves computational efficiency.
Description
Technical field
The present invention relates to technical field of electric power, specially the special transformer terminals decompression defluidization based on metering automation system data
Judgment method.
Background technique
Traditional metering fault discovery means mainly week inspection, first inspection, meter reading personnel's meter reading, electricity calculate exception, electricity consumption
Check etc..This routine inspection mode leads to metering fault duration length, can not find in time, is easy to all make to for electricity consumption both sides
At loss, or even influence safe power supply.
With the development of science and technology metering automation system may be implemented to acquire metering energy information in real time, supervise
Control, analysis and processing, can quickly search metering fault.Metering automation system main website has to be divided according to acquisition data
Analysis, to judge whether there is the function of metering abnormal phenomenon, but system logarithm it is judged that rate of false alarm it is higher, be unfavorable for data point
True anomalous event is accurately positioned in analysis personnel, extends the time of failure defect elimination closed loop.This is because metering automation system
Major function be acquisition, that does in this function of breakdown judge is not good enough.Therefore, in actual operation, metering operation
Personnel pass through electricity data, load data and event alarm information etc. that measuring equipment is corresponded to metering automation system acquisition
Summarized, analyzed, counted, and combined with the industry experience of itself, relatively accurately whether can judge measuring equipment
There are fault conditions.However mass data is faced, staff can not precisely analyze every data, become restriction metering
The bottleneck of equipment fault remote analysis.
Such as in current actual motion example, daily significant alarm is in metering automation system daily up to more than 590,000
Item, but actually whole just more than 20 people of maintenance personnel, have no idea to handle, and be difficult to position and find effective event at all
Barrier goes to handle.
Summary of the invention
In order to overcome the shortcomings of that prior art, the present invention provide the special transformer terminals based on metering automation system data
Decompression defluidization judgment method can effectively solve the problem of background technique proposes.
The technical solution adopted by the present invention to solve the technical problems is:
Special transformer terminals decompression defluidization judgment method based on metering automation system data, includes the following steps:
Step 100, analysis platform obtain special transformer terminals data from metering automation system flowback database, and the special change is eventually
End data includes voltage, current parameters value；
After step 200, analysis platform get the voltage of special transformer terminals, current parameters value, pass through determination module built in it
To determine whether corresponding specially transformer terminals generate decompression, defluidization failure.
As a preferred technical solution of the present invention, in step 200, phase is being determined by determination module built in it
Whether the special transformer terminals answered generate before decompression, defluidization failure, further includes::
Missing values processing is carried out to special transformer terminals data；And/or
Exclude the abnormal data in special transformer terminals data.
As a preferred technical solution of the present invention, special transformer terminals data are carried out with the concrete mode of missing values processing
Are as follows:
Association interpolation or Lagrange's interpolation are utilized when missing time interval is greater than threshold value t for separate deletion
Carry out interpolation；
For consecutive miss, when consecutive miss number is not more than threshold value n, association interpolation or Lagrange's interpolation are utilized
Interpolation is carried out, when consecutive miss number is greater than threshold value n, exits the processing of the special transformer terminals.
As a preferred technical solution of the present invention, threshold value t is defaulted as 5, and threshold value n is defaulted as 5.
As a preferred technical solution of the present invention, the concrete mode of the abnormal data in special transformer terminals data is excluded
Are as follows:
For each special transformer terminals data, judge whether it meets condition respectively: when phase three-wire three B phase voltage is equal to 0, AC
Phase voltage is less than 130V, and electric current is less than 15A；Alternatively, when four phase four line ABC three-phase voltage is less than 270V, electric current is less than 15A；If
It is unsatisfactory for, then determines that the special transformer terminals data are abnormal data；If satisfied, then determining that the special transformer terminals data are normal data.
As a preferred technical solution of the present invention, determine that corresponding specially transformer terminals are by determination module built in it
The no specific steps for generating decompression are as follows:
Step S201, by every phase current of the special transformer terminals and the special transformer terminals rated current with 0.5% product value phase
Compare, when the special transformer terminals this phase current be less than or equal to 0.5% load current value, then be judged to that no-voltage fault does not occur,
Otherwise it carries out in next step；
Step S202, by the phase voltage value of the special transformer terminals and the voltage rating of special transformer terminals with 78% product value phase
Compare, if this phase voltage value of the special transformer terminals is greater than or equal to 78% load voltage value, be judged to that no-voltage fault does not occur,
Otherwise it carries out in next step；
Step S203, the voltage of the another two-phase of the special transformer terminals is judged, if wherein any one phase voltage is big
In 0, then it is judged to that no-voltage fault does not occur, otherwise carries out in next step；
Step S204, one day point data of the special transformer terminals is determined, when there is 10 points or more continuous in one day
When data meet conditions above, then judge that no-voltage fault occurs for the special transformer terminals.
As a preferred technical solution of the present invention, determine that corresponding specially transformer terminals are by determination module built in it
The no specific steps for generating defluidization failure are as follows:
When there is no when no-voltage fault, then also there is no defluidization failures for the special transformer terminals for the special transformer terminals；
When no-voltage fault occurs for the special transformer terminals, then secondary judgement is carried out to determine whether that defluidization failure occurs.
As a preferred technical solution of the present invention, special transformer terminals are carried out with the specific steps of secondary judgement are as follows:
Step T201, by every phase voltage value of the special transformer terminals and the voltage rating of special transformer terminals with 60% product value phase
Compare, if every phase voltage value be respectively less than or be equal to 60% voltage rating, determine that defluidization failure does not occur for special transformer terminals, otherwise into
Enter in next step；
Step T202, by every phase current values of the special transformer terminals and the rated current of special transformer terminals and 0.5% product value
It compares, if three-phase electricity flow valuve is all larger than 0.5% load current value, determines that defluidization failure does not occur, if any phase current values
Less than 0.5% load current value, then enter in next step；
Step T203, the electric current of the special transformer terminals is judged.
As a preferred technical solution of the present invention, the electric current of the special transformer terminals is judged method particularly includes:
To three-phase and four-line, any biphase current is greater than 0.8A, another to be equal to 0A, and B phase voltage is not equal to 0；
For phase three-wire three, any one phase current is greater than 0.8A, another to be equal to 0A；
Then enter when meeting any of the above-described condition in next step；
Step T204, when the special transformer terminals meet above situation, and continuous 5 days and meet daily 60 point datas with
On, then judge the special transformer terminals defluidization.
As a preferred technical solution of the present invention, it was divided into 96 for 24 hours one day for a point data according to every 15 minutes
Point data.
Compared with prior art, the beneficial effects of the present invention are:
The present invention is based on the data of metering automation system main website acquisition, and the data are carried out with autonomous analysis, to sentence
The disconnected presence with the presence or absence of decompression defluidization phenomenon, and in the present invention in order to improve system logarithm it is judged that accuracy rate,
Can also data be carried out with a series of pretreatment, the rejecting etc. of processing, abnormal data including missing values is passed through during this
Above-mentioned a series of processing and actual analysis are conducive to data analyst and true anomalous event are accurately positioned, shorten failure
The time of defect elimination closed loop.Metering operations staff no longer needs to the measurement data directly facing magnanimity, but can be directly according to system
The result of calculating determines result, reduces the difficulty in computation in actual motion treatment process, improves computational efficiency.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is that decompression of the present invention judges flow diagram；
Fig. 3 is that defluidization of the present invention judges flowage structure schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, the present invention provides the special transformer terminals decompression defluidization judgement sides based on metering automation system data
Method includes the following steps:
Step 100, analysis platform obtain the voltage of special transformer terminals, current parameters from metering automation system flowback database
Value；
After step 200, analysis platform get the voltage of special transformer terminals, current parameters value, pass through determination module built in it
To determine whether corresponding specially transformer terminals generate decompression, defluidization failure.
The present invention is that metering energy information is acquired in real time, monitors, analyzes and located based on metering automation system
Reason ability quickly analyzes failure by automatically analyzing and handling the ability of judgement on the basis of the acquisition and analysis data
Type.It it is main effect be that may be implemented it is autonomous data are analyzed, avoid manually directly facing magnanimity
Acquisition data, reduce the artificial workload for calculating and directly judging.Every data is carried out by decision-making system realization
It accurately analyzes and handles.
In the present invention, in order to preferably reach the accuracy of judgement, its built-in determination module includes:
The missing values processing of special transformer terminals data, the data obtained to metering automation system flowback database lack
Value pretreatment, to avoid shortage of data value to the subsequent BUG for determining to generate " endless loop " or can not determine；
The exclusion of abnormal data, after handling data missing values, wherein inevitably there are the data of distortion, if not
The data of these distortions are handled, inevitable just to will affect its final accuracy for determining result, the effect of the step just exists
It is pre-processed in data, to reject abnormal data therein；
The every phase current values and every phase voltage value of special transformer terminals are determined, to judge whether that no-voltage fault and mistake occurs
Flow failure.
Specifically, the concrete mode that specially transformer terminals shortage of data value is handled are as follows:
Association interpolation or Lagrange's interpolation are utilized when missing time interval is greater than threshold value t for separate deletion
Carry out interpolation；
For consecutive miss, when consecutive miss number is not more than threshold value n, association interpolation or Lagrange's interpolation are utilized
Interpolation is carried out, when consecutive miss number is greater than threshold value n, exits the processing of the special transformer terminals, is otherwise carried out in next step.
In the present embodiment, threshold value t is defaulted as 5, and threshold value n is defaulted as 5.
Among the above, the i.e. known associated certain data of association interpolation calculate between known point according to certain algorithm
Intermediate point method, therefore, this algorithm is also referred to as the densification of data point.
All indicate certain inner link or rule in practical problem with function, and many functions all can only by experiment and
Observation is to understand.Such as some physical quantity in practice is observed, obtains corresponding observation in place several different,
Lagrange's interpolation can find a multinomial, get the value observed in the point of each observation just.It is such more
Item formula is known as Lagrangian (interpolation) multinomial.For mathematically, Lagrange's interpolation can provide one and pass through two just
The polynomial function of several known points on dimensional plane.Therefore, in order to determine certain point determine value, then can be bright with its glug
For day polynomial value as the approximation of the exact value, this method is Lagrange's interpolation.
The concrete mode of the exclusion of abnormal data are as follows:
It is less than 130V when phase three-wire three B phase voltage is equal to 0, AC phase voltage, electric current is less than 15A；
When four phase four line ABC three-phase voltage is less than 270V, electric current is less than 15A；
When meeting any one in above-mentioned two condition, then enter in next step, otherwise exclude the data, until all
Data, which are retrieved, to be finished into next step.
I, as shown in Fig. 2, every phase current values and every phase voltage value are determined the tool to judge whether generation no-voltage fault
Body step are as follows:
Step S201, by every phase current of the special transformer terminals and the special transformer terminals rated current with 0.5% product value phase
Compare, when the special transformer terminals this phase current be less than or equal to 0.5% load current value, then be judged to that no-voltage fault does not occur,
Otherwise it carries out in next step；
Step S202, by the phase voltage value of the special transformer terminals and the voltage rating of special transformer terminals with 78% product value phase
Compare, if this phase voltage value of the special transformer terminals is greater than or equal to 78% load voltage value, be judged to that no-voltage fault does not occur,
Otherwise it carries out in next step；
Step S203, the voltage of the another two-phase of the special transformer terminals is judged, if wherein any one phase voltage is big
In 0, then it is judged to that no-voltage fault does not occur, otherwise carries out in next step；
Step S204, one day point data of the special transformer terminals is determined, when there is 10 points or more continuous in one day
When data meet conditions above, then judge that no-voltage fault occurs for the special transformer terminals.
II, such as Fig. 3 show that the every phase current values and every phase voltage value to special transformer terminals are determined to judge whether to lose
Flow the specific steps of failure are as follows:
When there is no when no-voltage fault, then also there is no defluidization failures for the special transformer terminals for the special transformer terminals；
When no-voltage fault occurs for the special transformer terminals, then secondary judgement is carried out to determine whether that defluidization failure occurs.
Wherein, special transformer terminals are carried out with the specific steps of secondary judgement are as follows:
Step T201, by every phase voltage value of the special transformer terminals and the voltage rating of special transformer terminals with 60% product value phase
Compare, if every phase voltage value is respectively less than or is equal to 60% voltage rating, determines that specially defluidization failure does not occur for change, under otherwise entering
One step；
Step T202, by every phase current values of the special transformer terminals and the rated current of special transformer terminals and 0.5% product value
It compares, if three-phase electricity flow valuve is all larger than 0.5% load current value, determines that defluidization failure does not occur, if any phase current values
Less than 0.5% load current value, then enter in next step；
Step T203, the electric current of the special transformer terminals is judged.
Among the above, the electric current of the special transformer terminals is judged method particularly includes:
To three-phase and four-line, any biphase current is greater than 0.8A, another to be equal to 0A, and B phase voltage is not equal to 0；
For phase three-wire three, any one phase current is greater than 0.8A, another to be equal to 0A；
Then enter when meeting any of the above-described condition in next step；
Step T204, when the special transformer terminals meet above situation, and continuous 5 days and meet daily 60 point datas with
On, then judge the special transformer terminals defluidization.
In addition, in the present invention, it is also necessary to further explanation: being a point data by one day 24 according to every 15 minutes
Hour is divided into 96 point datas.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (10)
1. the special transformer terminals decompression defluidization judgment method based on metering automation system data, which is characterized in that including walking as follows
It is rapid:
Step 100, analysis platform obtain special transformer terminals data, the special transformer terminals number from metering automation system flowback database
According to including voltage, current parameters value；
After step 200, analysis platform get the voltage of special transformer terminals, current parameters value, sentenced by determination module built in it
Whether fixed corresponding specially transformer terminals generate decompression, defluidization failure.
2. the special transformer terminals decompression defluidization judgment method according to claim 1 based on metering automation system data,
It is characterized in that in step 200, determining whether corresponding specially transformer terminals generate decompression, lose by determination module built in it
Before stream failure, further includes::
Missing values processing is carried out to special transformer terminals data；And/or
Exclude the abnormal data in special transformer terminals data.
3. the special transformer terminals decompression defluidization judgment method according to claim 2 based on metering automation system data,
It is characterized in that, special transformer terminals data is carried out with the concrete mode of missing values processing are as follows:
Separate deletion is carried out when missing time interval is greater than threshold value t using association interpolation or Lagrange's interpolation
Interpolation；
For consecutive miss, when consecutive miss number is not more than threshold value n, carried out using association interpolation or Lagrange's interpolation
Interpolation exits the processing of the special transformer terminals when consecutive miss number is greater than threshold value n.
4. the special transformer terminals decompression defluidization judgment method according to claim 3 based on metering automation system data,
It is characterized in that, threshold value t is defaulted as 5, and threshold value n is defaulted as 5.
5. the special transformer terminals decompression defluidization judgment method according to claim 2 based on metering automation system data,
It is characterized in that, excludes the concrete mode of the abnormal data in special transformer terminals data are as follows:
For each special transformer terminals data, judge whether it meets condition respectively: when phase three-wire three B phase voltage is equal to 0, AC phase electricity
Pressure is less than 130V, and electric current is less than 15A；Alternatively, when four phase four line ABC three-phase voltage is less than 270V, electric current is less than 15A；If discontented
Foot, then determine that the special transformer terminals data are abnormal data；If satisfied, then determining that the special transformer terminals data are normal data.
6. the special transformer terminals decompression defluidization judgment method according to claim 2 based on metering automation system data,
It is characterized in that, determines whether corresponding specially transformer terminals generate the specific steps of decompression by determination module built in it are as follows:
Step S201, every phase current of the special transformer terminals and the special transformer terminals rated current are compared with 0.5% product value,
When the special transformer terminals this phase current be less than or equal to 0.5% load current value, then be judged to that no-voltage fault does not occur, otherwise into
Row is in next step；
Step S202, by the phase voltage value of the special transformer terminals and the voltage rating of special transformer terminals compared with 78% product value
Compared with, if this phase voltage value of the special transformer terminals is greater than or equal to 78% load voltage value, it is judged to not occurring no-voltage fault, it is no
It then carries out in next step；
Step S203, the voltage of the another two-phase of the special transformer terminals is judged, if wherein any one phase voltage is all larger than 0,
Then it is judged to that no-voltage fault does not occur, otherwise carries out in next step；
Step S204, one day point data of the special transformer terminals is determined, when the continuous data for there are 10 points or more in one day
When meeting conditions above, then judge that no-voltage fault occurs for the special transformer terminals.
7. the special transformer terminals decompression defluidization judgment method according to claim 2 based on metering automation system data,
It is characterized in that, determines whether corresponding specially transformer terminals generate the specific steps of defluidization failure by determination module built in it are as follows:
When there is no when no-voltage fault, then also there is no defluidization failures for the special transformer terminals for the special transformer terminals；
When no-voltage fault occurs for the special transformer terminals, then secondary judgement is carried out to determine whether that defluidization failure occurs.
8. the special transformer terminals decompression defluidization judgment method according to claim 7 based on metering automation system data,
It is characterized in that, special transformer terminals is carried out with the specific steps of secondary judgement are as follows:
Step T201, by every phase voltage value of the special transformer terminals and the voltage rating of special transformer terminals compared with 60% product value
Compared with if every phase voltage value is respectively less than or equal to 60% voltage rating, determines that defluidization failure does not occur for special transformer terminals, otherwise enter
In next step；
Step T202, by every phase current values of the special transformer terminals and the rated current of special transformer terminals compared with 0.5% product value
Compared with if three-phase electricity flow valuve is all larger than 0.5% load current value, determining that defluidization failure does not occur, if any phase current values are less than
0.5% load current value then enters in next step；
Step T203, the electric current of the special transformer terminals is judged.
9. the special transformer terminals decompression defluidization judgment method according to claim 8 based on metering automation system data,
It is characterized in that, the electric current of the special transformer terminals is judged method particularly includes:
To three-phase and four-line, any biphase current is greater than 0.8A, another to be equal to 0A, and B phase voltage is not equal to 0；
For phase three-wire three, any one phase current is greater than 0.8A, another to be equal to 0A；
Then enter when meeting any of the above-described condition in next step；
Step T204, when the special transformer terminals meet above situation, and continuous 5 days and meet 60 point datas or more daily, then
Judge the special transformer terminals defluidization.
10. the special transformer terminals decompression defluidization judgement side according to claim 6 or 9 based on metering automation system data
Method, which is characterized in that be divided into 96 point datas for 24 hours one day for a point data according to every 15 minutes.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112558002A (en) * | 2020-12-29 | 2021-03-26 | 广东电网有限责任公司中山供电局 | 10kV special transformer metering PT fault analysis method and system based on data backflow |
| CN113140096A (en) * | 2021-04-23 | 2021-07-20 | 广东电网有限责任公司 | Method, device, equipment and storage medium for monitoring and judging station loss of voltage |
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