CN108550084A - A method of based on history electricity charge information assessment distribution transforming drop damage potentiality - Google Patents
A method of based on history electricity charge information assessment distribution transforming drop damage potentiality Download PDFInfo
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- CN108550084A CN108550084A CN201810235357.6A CN201810235357A CN108550084A CN 108550084 A CN108550084 A CN 108550084A CN 201810235357 A CN201810235357 A CN 201810235357A CN 108550084 A CN108550084 A CN 108550084A
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Abstract
The present invention relates to technical field of power systems, more particularly, to a kind of method based on history electricity charge information assessment distribution transforming drop damage potentiality.Include the following steps：S1：Obtain the current active energy P0 and capacity of idle power Q0 that metering system is matched；S2：Whether meet current active energy P0 simultaneously more than active energy threshold values Ps and capacity of idle power Q0 is more than capacity of idle power threshold values Qs, if then entering in next step, terminates for 0 if otherwise setting drop damage potentiality；S3：Calculate the Equivalent Power Factor COS0 of the distribution transforming；S4：Whether satisfaction assessment target power factor lower limit COSl, which is less than less than Equivalent Power Factor for COS0, is assessed the target power factor upper limit, if then entering next step, is terminated for 0 if otherwise setting and dropping damage potentiality；S5：Calculate current drain COEFFICIENT K 0, target loss COEFFICIENT K t and drop damage potentiality Pt.The drop damage potentiality of distribution transformer can accurately be calculated.
Description
Technical field
The present invention relates to technical field of power systems, and distribution transforming is assessed based on history electricity charge information more particularly, to one kind
The method of drop damage potentiality.
Background technology
Electric Power Marketing System, which has been carried out, at present copies the collection of the monthly electricity consumption of distribution transforming, possesses the electricity number of magnanimity
According to.
And the total amount of distribution loss can only be found out according to the difference of summary table and following each branch line low-pressure meter at present, still
How much can not segment out is since caused by reactive power exception, reason mainly has following：
1, the correspondence (change-family relationship) of summary table and each branch line low-pressure meter often changes, and safeguards that follow-up having time is poor, leads
Attrition inventory quantity is caused to have calculating mistake.
2, the meter reading interval of summary table and each branch line low-pressure meter is inconsistent, causes the granularity of data inconsistent, can not carry out
It calculates.
3, difference is directly asked according to the electricity of the electricity of summary table and each branch line low-pressure meter, caused by what is obtained is all reasons
Loss, do not evaluate individually reactive power it is excessively high caused by be lost.
Based on the above reason, to distribution transformer, the distribution loss amount caused by reactive power is excessively high can not carry out at present
Assessment, so can not carry out assessment Optimal Reactive Power matches the drop damage potentiality for postponing distribution transformer.
Invention content
The present invention is at least one defect overcome described in the above-mentioned prior art, provides one kind and is commented based on history electricity charge information
The method for estimating distribution transforming drop damage potentiality can accurately calculate the drop damage potentiality of distribution transformer.
In order to solve the above technical problems, the technical solution adopted by the present invention is：One kind is matched based on the assessment of history electricity charge information
The method for becoming drop damage potentiality, includes the following steps：
S1：Obtain the current active energy P that metering system is matched0With capacity of idle power Q0；
S2：Whether current active energy P is met simultaneously0More than active energy threshold values Ps and capacity of idle power Q0More than idle electricity
Threshold values Qs is measured, if then into next step, if it is 0 end otherwise to set drop damage potentiality；
S3：Calculate the Equivalent Power Factor COS0 of the distribution transforming；
S4：Whether satisfaction assesses target power factor lower limit COSlIt is that COS0 is less than assessment object less than Equivalent Power Factor
The power factor upper limit terminates if otherwise setting drop damage potentiality for 0 if then entering in next step；
S5：Calculate current drain COEFFICIENT K0, target loss COEFFICIENT K t and drop damage potentiality Pt.
Further, in step s3, the computational methods of Equivalent Power Factor COS0 are as follows：
Equivalent Power Factor, calculation formula are as follows：
According to above-mentioned formula, current power factor COS0 is calculated with P0, Q0.
Further, in step s 5, current drain COEFFICIENT K0Calculation formula it is as follows：
Further, in step s 5, the calculation formula of target loss COEFFICIENT K t is as follows：
By user, oneself setting is used as evaluation reference target to wherein COSt as needed.
Further, in step s 5, the calculation formula of drop damage potentiality Pt is as follows：
Pt=E × (K0-Kt)×P0
Wherein distribution transforming unit electric degree loss E is substantially nominal loss when distribution transformer load is pure active, can be gone out according to distribution transforming
The gain of parameter of factory.
Further, described COSh, COSl, Qs, Ps need to set according to user filters out assessment object, will have drop to damage
The object of value screens acquisition.
Further, the described distribution transforming unit electric degree loss E can use the prior year, a certain power supply bureau, power supply station medium voltage side
The 0.5%~1% of the total power supply volume of transformer is approximate to be obtained.
Compared with prior art, advantageous effect is：
It 1, only need to be according to the electricity data of distribution transformer, without other data；
Second, using the data of regular period, the interference of data fluctuations can be removed from；
Third can be derived that statistical law using the data of long-term, is not engraved when single and goes into seriously accuracy；
4th, it is capable of providing quantitative drop damage Potential Evaluation.
Description of the drawings
Fig. 1 is overall flow schematic diagram of the present invention.
Specific implementation mode
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；It is attached in order to more preferably illustrate the present embodiment
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art,
The omitting of some known structures and their instructions in the attached drawings are understandable.Being given for example only property of position relationship described in attached drawing
Illustrate, should not be understood as the limitation to this patent.
As shown in Figure 1, a kind of method based on history electricity charge information assessment distribution transforming drop damage potentiality, includes the following steps：
S1：Obtain the current active energy P that metering system is matched0With capacity of idle power Q0；
S2：Whether current active energy P is met simultaneously0More than active energy threshold values Ps and capacity of idle power Q0More than idle electricity
Threshold values Qs is measured, if then into next step, if it is 0 end otherwise to set drop damage potentiality；
S3：Calculate the Equivalent Power Factor COS0 of the distribution transforming；
S4：Whether satisfaction assesses target power factor lower limit COSlIt is that COS0 is less than assessment object less than Equivalent Power Factor
The power factor upper limit terminates if otherwise setting drop damage potentiality for 0 if then entering in next step；
S5：Calculate current drain COEFFICIENT K0, target loss COEFFICIENT K t and drop damage potentiality Pt.
In the present embodiment, in step s3, the computational methods of Equivalent Power Factor COS0 are as follows：
Equivalent Power Factor, calculation formula are as follows：
According to above-mentioned formula, current power factor COS is calculated with P0, Q00。
In the present embodiment, in step s 5, current drain COEFFICIENT K0Calculation formula it is as follows：
In the present embodiment, in step s 5, the calculation formula of target loss COEFFICIENT K t is as follows：
By user, oneself setting is used as evaluation reference target to wherein COSt as needed.
In the present embodiment, in step s 5, the calculation formula of drop damage potentiality Pt is as follows：
Pt=E × (K0-Kt)×P0
Wherein distribution transforming unit electric degree loss E is substantially nominal loss when distribution transformer load is pure active, can be gone out according to distribution transforming
The gain of parameter of factory.
In the present embodiment, described COSh, COSl, Qs, Ps need to set according to user filters out assessment object, will have
The object of drop damage value screens acquisition.
In the present embodiment, the described distribution transforming unit electric degree loss E can use the prior year, in a certain power supply bureau, power supply station
Press 0.5%~1% approximate acquisition of the total power supply volume of side transformer.
Assuming that power factor optimization target COSt is set as 0.95 at present, the power factor upper limit COSh of optimization object is set
It is set to 0.92, the power factor lower limit COSl of optimization object is set as 0.10, capacity of idle power threshold values Qs and active energy threshold values
Ps is set to 5000kWh, and it is 2.30% that the loss of unit electric degree, which is E,.
It is so 830.65kWh for a current active energy P0, capacity of idle power Q0 is the distribution transforming of 343.94kVarh,
It is 0 that it, which drops damage potentiality,.
It is 10578685kWh for a current active energy P0, capacity of idle power Q0 is the distribution transforming of 5625600kVarh,
It is 0.8829 that COS0, which can be calculated, and it is 42523kWh finally to acquire drop damage potentiality.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement etc., should be included in the claims in the present invention made by within the spirit and principle of invention
Protection domain within.
Claims (7)
1. a kind of method based on history electricity charge information assessment distribution transforming drop damage potentiality, which is characterized in that include the following steps：
S1：Obtain the current active energy P that metering system is matched0With capacity of idle power Q0；
S2：Whether current active energy P is met simultaneously0More than active energy threshold values Ps and capacity of idle power Q0More than capacity of idle power valve
Value Qs terminates if otherwise setting drop damage potentiality for 0 if then entering in next step；
S3：Calculate the Equivalent Power Factor COS of the distribution transforming0；
S4：Whether satisfaction assesses target power factor lower limit COSlIt is COS less than Equivalent Power Factor0Less than assessment target power
The factor upper limit terminates if otherwise setting drop damage potentiality for 0 if then entering in next step；
S5：Calculate current drain COEFFICIENT K0, target loss COEFFICIENT K t and drop damage potentiality Pt.
2. a kind of method based on history electricity charge information assessment distribution transforming drop damage potentiality according to claim 1, feature exist
In, in step s3, Equivalent Power Factor COS0Computational methods it is as follows：
Equivalent Power Factor, calculation formula are as follows：
According to above-mentioned formula, P is used0、Q0Calculate current power factor COS0。
3. a kind of method based on history electricity charge information assessment distribution transforming drop damage potentiality according to claim 1, feature exist
In, in step s 5, current drain COEFFICIENT K0Calculation formula it is as follows：
4. a kind of method based on history electricity charge information assessment distribution transforming drop damage potentiality according to claim 1, feature exist
In in step s 5, the calculation formula of target loss COEFFICIENT K t is as follows：
By user, oneself setting is used as evaluation reference target to wherein COSt as needed.
5. a kind of method based on history electricity charge information assessment distribution transforming drop damage potentiality according to claim 1, feature exist
In in step s 5, the calculation formula of drop damage potentiality Pt is as follows：
Pt=E × (K0-Kt)×P0
Wherein distribution transforming unit electric degree loss E is substantially nominal loss when distribution transformer load is pure active, can be dispatched from the factory according to distribution transforming
Gain of parameter.
6. a kind of method based on history electricity charge information assessment distribution transforming drop damage potentiality according to claim 1, feature exist
In described COSh, COSl, Qs, Ps need to set according to user filters out assessment object, will have the object of drop damage value to screen
Out obtain.
7. a kind of method based on history electricity charge information assessment distribution transforming drop damage potentiality according to claim 5, feature exist
E, which is lost, in, the distribution transforming unit electric degree can use the prior year, a certain power supply bureau, power supply station the total power supply volume of medium voltage side transformer
0.5%~1% approximate obtain.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112531697A (en) * | 2020-12-01 | 2021-03-19 | 广东电网有限责任公司佛山供电局 | Calculation method for distribution transformer loss caused by three-phase imbalance of load |
| CN117834297A (en) * | 2024-02-29 | 2024-04-05 | 浪潮电子信息产业股份有限公司 | Attack detection method, device, system, electronic equipment and readable storage medium |
| CN117834297B (en) * | 2024-02-29 | 2024-05-28 | 浪潮电子信息产业股份有限公司 | Attack detection method, device, system, electronic equipment and readable storage medium |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112531697A (en) * | 2020-12-01 | 2021-03-19 | 广东电网有限责任公司佛山供电局 | Calculation method for distribution transformer loss caused by three-phase imbalance of load |
| CN117834297A (en) * | 2024-02-29 | 2024-04-05 | 浪潮电子信息产业股份有限公司 | Attack detection method, device, system, electronic equipment and readable storage medium |
| CN117834297B (en) * | 2024-02-29 | 2024-05-28 | 浪潮电子信息产业股份有限公司 | Attack detection method, device, system, electronic equipment and readable storage medium |
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