CN110826011B - Method and system for judging whether multiple transformers can be grouped - Google Patents
Method and system for judging whether multiple transformers can be grouped Download PDFInfo
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Abstract
The embodiment of the invention provides a method and a system for judging whether a plurality of transformers can be grouped, and belongs to the technical field of ultrahigh power transformers. The method comprises the following steps: determining the number of the plurality of transformers; in the case of the number of 2, calculating a transformation ratio deviation by adopting a formula (1); judging whether the variation ratio deviation is larger than a first preset value or not; calculating the load capacity of the transformer according to the formula (2) and the formula (3) under the condition that the transformation ratio deviation is less than or equal to a first preset value; calculating the capacity ratio of the transformer according to the load capacity, and judging whether the capacity ratio meets a preset condition or not; calculating the circulating current when the transformers are operated in parallel according to the formula (4) under the condition that the capacity ratio is judged to meet the preset condition; calculating the ratio of the circulating current to the rated current of each transformer respectively; judging whether each ratio is smaller than or equal to a second preset value; and under the condition that each ratio is less than or equal to a second preset value, determining that the plurality of transformers can be grouped.
Description
Technical Field
The invention relates to the technical field of ultra-high power transformers, in particular to a method and a system for judging whether a plurality of transformers can be grouped.
Background
With the continuous acceleration of the urban process, the main transformer capacity of the 500kV transformer substation which is put into operation in the 90 th century of 20 th century cannot meet the current power load demand, and the original transformer substation can be expanded and compatibilized. Because the whole process period is longer, the design and manufacturing process of the transformer is faster, and the parameters of the transformer put into operation in the later stage are not matched with those of the original transformer. The original transformer still has the service life, and the situation that the parameters are not matched with those of the ultrahigh voltage power transformer and the ultrahigh voltage power transformer are operated in parallel for a long time is needed. The unmatched parameters mainly refer to capacity, rated voltage transformation ratio, high-medium impedance and the like, and the situations of uneven power distribution, large circulation and the like of the transformer are caused.
Disclosure of Invention
The invention aims to provide a method and a system for judging whether a plurality of transformers can be grouped or not, and the method and the system can judge whether different transformers can be grouped or not, so that the transformers after being grouped can work efficiently and stably.
In order to achieve the above object, an embodiment of the present invention provides a method for determining whether a plurality of transformers can be grouped, the method including:
determining the number of the plurality of transformers;
in the case where the number is 2, the transformation ratio deviation of the transformer is calculated using formula (1),
wherein Δk is the ratio deviation, k 1 Is the transformation ratio, k, of one of the transformers 2 For the transformation ratio of another said transformer,
judging whether the transformation ratio deviation is larger than a first preset value or not;
under the condition that the transformation ratio deviation is less than or equal to the first preset value, calculating the allocated load capacity of the transformer under the condition of simultaneously accessing a transformer substation according to a formula (2) and a formula (3),
wherein S is 1 Is the load capacity of one of the transformers, S 2 For the load capacity of the other one of said transformers,
for the impedance of one of said transformers, < >>
Impedance for another of the transformers;
calculating the capacity ratio of the transformer according to the load capacity, and judging whether the capacity ratio meets a preset condition or not;
in the case where it is judged that the capacity ratio satisfies a predetermined condition, a circulating current at the time of parallel operation of the transformers is calculated according to formula (4),
wherein I is c For the circulating current, U 1 A load voltage for the substation;
calculating the ratio of the circulating current to the rated current of each transformer respectively;
judging whether each ratio is smaller than or equal to a second preset value;
and under the condition that each ratio is smaller than or equal to the second preset value, determining that a plurality of transformers can be grouped.
Optionally, the method comprises:
under the condition that the number is 3, calculating the transformation ratio deviation of any two transformers by adopting a formula (5),
wherein Δk is the ratio deviation, k 1 For the transformation ratio, k, of one of any two transformers 2 A transformer ratio for the other of every two transformers;
judging whether each transformation ratio deviation is smaller than or equal to the first preset value or not respectively;
under the condition that each transformation ratio deviation is smaller than or equal to the first preset value, calculating the distributed load capacity of any two transformers under the condition of being simultaneously connected to a transformer substation according to a formula (6) and a formula (7),
wherein S is 1 For the load capacity of one of any two transformers, S 2 For the load capacity of the other of any two of said transformers,
for the impedance of one of any two of said transformers, +.>
Impedance of the other one of the two transformers is equal to the impedance of the other one of the two transformers;
calculating the capacity ratio of any two transformers according to the load capacity, and judging whether the capacity ratio meets the preset condition;
in the case where it is judged that the capacity ratio satisfies the predetermined condition, a circulating current at the time of parallel operation of the transformers is calculated according to the formulas (8) to (11),
wherein I is 1 For a plurality of saidSaid circulating current of one of said transformers, I 2 For the circulating current of another one of the plurality of transformers, I 3 For the circulating current of a further one of the plurality of transformers, I L Z is the rated current of the transformer 1 Impedance, Z, of one of the plurality of transformers 2 Impedance, Z, of another one of the plurality of transformers 3 For the impedance, k, of a further one of said plurality of transformers 1 A transformation ratio, k, for one of a plurality of said transformers 2 For the transformation ratio, k, of another one of said transformers 3 A transformer ratio for a further one of the plurality of transformers;
calculating the ratio of the circulating current to the rated current of the transformer respectively;
judging whether each ratio is smaller than or equal to a second preset value;
and under the condition that each ratio is smaller than or equal to the second preset value, determining that a plurality of transformers can be grouped.
Optionally, the method further comprises:
and determining that a plurality of transformers cannot be grouped under the conditions that the transformation ratio deviation is larger than the first preset value, any transformation ratio deviation is larger than the first preset value, the capacity ratio does not meet the preset condition and/or any ratio is larger than the second preset value.
The invention also provides a system for determining whether a plurality of transformers can be grouped, the system comprising a processor for performing a method as described in any of the above.
In another aspect, the present invention provides a method for determining a pairing scheme for a transformer, the method comprising:
randomly selecting two transformers from a plurality of transformers;
judging whether the selected transformers can be grouped by adopting the method;
under the condition that the selected transformers can be grouped, matching the selected transformers, and deleting the selected transformers from a plurality of transformers;
judging whether the number of the matched transformers is larger than or equal to a preset matching value;
outputting the assembled transformers and ending the method if it is determined whether the number of the assembled transformers is greater than or equal to the assembly value;
and under the condition that the selected transformers cannot be grouped, randomly selecting two transformers from the plurality of transformers again.
The invention also provides a method for determining a grouping scheme of a transformer, the method comprising:
randomly selecting three transformers from a plurality of transformers;
judging whether the selected transformers can be grouped by adopting any one of the methods;
under the condition that the selected transformers can be grouped, matching the selected transformers, and deleting the selected transformers from a plurality of transformers;
judging whether the number of the matched transformers is larger than or equal to a preset matching value;
outputting the assembled transformers and ending the method if it is determined whether the number of the assembled transformers is greater than or equal to the assembly value;
and under the condition that the selected transformers cannot be grouped, randomly selecting three transformers from the plurality of transformers again.
The invention also provides a system for determining a grouping scheme for transformers, the system comprising a processor for performing a method as described in any of the above.
In yet another aspect, the present invention provides a method for detecting a transformer planning of a substation, the method comprising:
judging whether each group of transformers in the transformer substation can be grouped by adopting the method of any one of the above steps;
and marking the group where the transformers which cannot be grouped in the transformer substation are in abnormal groups.
The invention also provides a system for detecting transformer planning of a substation, the system comprising a processor for performing the method as described above.
In yet another aspect, the present invention also provides a storage medium storing instructions for reading by a machine to cause the machine to perform a method as described in any one of the above.
Through the technical scheme:
the method and the system for judging whether the plurality of transformers can be grouped are characterized in that the transformer deviation, the load capacity and the circulating current of the transformers are calculated respectively, and judgment is carried out by adopting a plurality of preset conditions based on the calculated values, so that whether the plurality of transformers can be grouped is determined, and the grouped transformers can work efficiently and stably;
the method and the system for determining the matching scheme of the transformers can determine the matching mode of the transformers by determining whether each two or each three of the transformers can be grouped aiming at a plurality of transformers with different models, thereby ensuring that the transformers after matching can safely and stably work;
the method and the system for detecting transformer planning of the transformer substation can detect the transformers of each matched group of the transformer substation, determine whether the transformers of each group can meet the matching conditions, and mark the groups which do not meet the matching conditions, so that the transformer substation can be determined to safely and stably work.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain, without limitation, the embodiments of the invention. In the drawings:
FIG. 1 is a flow chart of a method for determining whether multiple transformers can be grouped according to one embodiment of the invention;
FIG. 2 is a partial flow chart of a method for determining whether multiple transformers can be grouped according to one embodiment of the invention;
FIG. 3 is a flow chart of a method for determining a pairing scheme for a transformer according to one embodiment of the invention;
FIG. 4 is a flow chart of a method for determining a pairing scheme for a transformer according to one embodiment of the invention;
fig. 5 is a flow chart of a method for detecting a transformer planning of a substation according to one embodiment of the invention.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
In the embodiments of the present invention, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the positional relationship of the various components with respect to one another in the vertical, vertical or gravitational directions.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
As shown in fig. 1, is a method for determining whether a plurality of transformers can be used according to an embodiment of the present invention
In step S10, the number of the plurality of transformers is determined.
In step S11, in the case where the number is 2, the transformation ratio deviation of the transformer is calculated using formula (1),
wherein Δk is the variation of the transformation ratio, k 1 Is the transformation ratio, k of a transformer 2 The transformer ratio of the other transformer;
in step S12, it is determined whether the variation ratio deviation is greater than a first preset value. The first preset value may be determined by a rule of selecting a transformer according to a practical transformer of a person skilled in the art. In this embodiment, the first preset value may be, for example, 0.5% in view of the relevant regulations of the document power transformer operating regulations. In addition, excessive variation in transformation ratio means excessive inconsistency of transformers, and after the two transformers are grouped, the working efficiency is low, and potential safety hazards are also large. Therefore, in the case where it is determined that the variation of the transformation ratio is greater than the second preset value, it is indicated that the two transformers cannot be grouped, and then step S19 may be performed.
In step S13, in case it is determined that the variation of the transformation ratio is less than or equal to the first preset value, the load capacity allocated to the transformer in case of simultaneous access to the transformer substation is calculated according to formula (2) and formula (3),
wherein S is 1 Is the load capacity of a transformer, S 2 For the load capacity of the other transformer,
is the impedance of a transformer, +.>
Impedance of another transformer;
in step S14, the capacity ratio of the transformer is calculated from the load capacity, and it is determined whether the capacity ratio satisfies a predetermined condition. Wherein for the predetermined condition it may be determined by a person skilled in the art based on the selection rules of the transformer. In this embodiment, the preset condition may be, for example, whether the capacity ratio is within the interval range of interval [0.5,2], according to the relevant specifications of the document "power transformer operation procedure". In addition, when the capacity ratio is not within the interval [0.5,2], it is explained that the inconsistency of the two transformers is too large, and the two transformers are not only low in working efficiency but also have great potential safety hazards after being grouped. Therefore, in this embodiment, in the case where it is determined that the capacity ratio does not satisfy the predetermined condition, which means that the two transformers cannot be grouped, step S19 may be performed.
In step S15, in the case where it is judged that the capacity ratio satisfies the predetermined condition, the circulating current at the time of parallel operation of the transformers is calculated according to formula (4),
wherein I is c Is a circulating current, U 1 The load voltage of the transformer substation;
in step S16, calculating the ratio of the circulating current to the rated current of each transformer;
in step S17, it is determined whether each ratio is less than or equal to a second preset value. Wherein, for the preset value, the determination can be made by the person skilled in the art based on the selection principle of the transformer. In this embodiment, the second preset value may be, for example, 10% according to the relevant specifications of the document "power transformer operation procedure". In addition, the ratio being greater than the second preset value means that the inconsistency of the two transformers is too large, and the two transformers are low in working efficiency after being grouped, and the potential safety hazard is also large. Therefore, in this embodiment, if it is determined that any one of the ratios is greater than the second preset value, which indicates that the two transformers cannot be grouped, step S19 may be performed.
In step S18, in the case where each ratio is determined to be less than or equal to the second preset value, it is determined that a plurality of transformers can be grouped.
In one embodiment of the invention, considering that the number of transformers selected may also be 3, then in case the number of transformers is 3, the method may comprise the steps as shown in fig. 2. In fig. 2, the method may further include:
in step S20, in the case where the determined number is 3, the transformation ratio deviation of any two transformers is calculated using formula (5),
wherein Δk is the variation of the transformation ratio, k 1 Is the transformation ratio, k of one of any two transformers 2 The transformer ratio of the other transformer in every two transformers;
in step S21, it is determined whether each of the variation ratios is smaller than or equal to a first preset value, respectively. If it is determined that any transformation ratio deviation is greater than the first preset value, it is indicated that three transformers cannot be grouped, and step S28 may be performed.
In step S22, in the case where each transformation ratio deviation is determined to be less than or equal to the first preset value, the load capacity allocated to any two transformers in the case of simultaneously accessing the transformer substation is calculated according to the formula (6) and the formula (7),
wherein S is 1 For the load capacity of one of any two transformers, S 2 For the load capacity of the other of any two transformers,
impedance of one of any two transformers, < >>
Impedance of the other transformer of the two transformers;
in step S23, the capacity ratio of any two transformers is calculated from the load capacity, and it is determined whether or not the capacity ratio satisfies a predetermined condition. If it is determined that any capacity ratio does not satisfy the predetermined condition, which indicates that three transformers cannot be grouped, step S28 may be performed.
In step S24, in the case where it is judged that the capacity ratio satisfies the predetermined condition, the circulating current at the time of parallel operation of the transformers is calculated according to the formulas (8) to (11),
wherein I is 1 The circulating current for one transformer of a plurality of transformers, I 2 For the circulating current of another transformer of the plurality of transformers, I 3 For circulating current of another transformer of the plurality of transformers, I L Z is the rated current of the transformer 1 Impedance, Z, of one of the transformers 2 Impedance, Z, of another one of the plurality of transformers 3 Impedance, k, of a further one of the plurality of transformers 1 The transformation ratio, k, of one of the transformers 2 For the transformation ratio, k, of another one of the transformers 3 The transformer ratio of the other transformer in the plurality of transformers;
in step S25, calculating the ratio of the circulating current to the rated current of the transformer, respectively;
in step S26, it is determined whether each ratio is less than or equal to a second preset value. If it is determined that any ratio is greater than the second preset value, which indicates that three transformers cannot be grouped, step S28 may be performed.
In step S27, in the case where each ratio is determined to be less than or equal to the second preset value, it is determined that the plurality of transformers can be grouped.
In another aspect, the present invention also provides a system for determining whether a plurality of transformers can be grouped, the system may include a processor that may be used to perform the method as shown in fig. 1 or fig. 2.
In another aspect, the present invention provides a method for determining a transformer grouping scheme, as shown in fig. 3, the method comprising:
in step S30, two transformers are randomly selected from the plurality of transformers;
in step S31, it is determined whether the selected transformers can be grouped using the method as shown in fig. 1;
in step S32, if it is determined that the selected transformers can be grouped, grouping the selected transformers, and deleting the selected transformers from the plurality of transformers;
in step S33, it is determined whether the number of transformers that have been assembled is greater than or equal to a preset assembly value;
in step S34, in the case of judging whether the number of transformers that have been assembled is greater than or equal to the assembly value, indicating that the number of transformers that need to be assembled is sufficient, the assembled transformers may be output and the method may be ended;
and under the condition that the selected transformers cannot be grouped, randomly selecting two transformers from the plurality of transformers again.
The present invention also provides a method for determining a grouping scheme of transformers, as shown in fig. 4, the method may include:
in step S40, three transformers are randomly selected from the plurality of transformers;
in step S41, it is determined whether the selected transformers can be grouped using the method as shown in fig. 2;
in step S42, if it is determined that the selected transformers can be grouped, grouping the selected transformers, and deleting the selected transformers from the plurality of transformers;
in step S43, it is determined whether the number of transformers that have been assembled is greater than or equal to a preset assembly value;
in step S44, in the case of judging whether the number of transformers that have been assembled is greater than or equal to the assembly value, indicating that the number of transformers that need to be assembled is sufficient, the assembled transformers may be output and the method may be ended;
and under the condition that the selected transformers cannot be grouped, randomly selecting three transformers from the plurality of transformers again.
The present invention also provides a system for determining a grouping scheme for transformers, which may include a processor that may be used to perform the method as shown in fig. 3 or fig. 4.
In yet another aspect, the present invention provides a method for detecting a transformer planning of a substation, as shown in fig. 5, the method may comprise:
in step S51, it is determined whether each group of transformers in the substation can be grouped by using the method as in fig. 1 or fig. 2;
in step S52, the group in which the transformers that cannot be grouped in the substation are located is marked as an abnormal group.
The present invention also provides a system for detecting transformer planning of a substation, which may comprise a processor, which may be used to perform the method as shown in fig. 5.
In yet another aspect, the present invention also provides a storage medium, which may store instructions that may be used to be read by a machine to cause the machine to perform a method as shown in any one of fig. 1 to 5.
Through the technical scheme:
the method and the system for judging whether the plurality of transformers can be grouped are characterized in that the transformer deviation, the load capacity and the circulating current of the transformers are calculated respectively, and judgment is carried out by adopting a plurality of preset conditions based on the calculated values, so that whether the plurality of transformers can be grouped is determined, and the grouped transformers can work efficiently and stably;
the method and the system for determining the matching scheme of the transformers can determine the matching mode of the transformers by determining whether each two or each three of the transformers can be grouped aiming at a plurality of transformers with different models, thereby ensuring that the transformers after matching can safely and stably work;
the method and the system for detecting transformer planning of the transformer substation can detect the transformers of each matched group of the transformer substation, determine whether the transformers of each group can meet the matching conditions, and mark the groups which do not meet the matching conditions, so that the transformer substation can be determined to safely and stably work.
The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the embodiments of the present invention are not limited to the specific details of the foregoing embodiments, and various simple modifications may be made to the technical solutions of the embodiments of the present invention within the scope of the technical concept of the embodiments of the present invention, and all the simple modifications belong to the protection scope of the embodiments of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations of embodiments of the invention are not described in detail.
Those skilled in the art will appreciate that all or part of the steps in implementing the methods of the embodiments described above may be implemented by a program stored in a storage medium, including instructions for causing a (which may be a single-chip microcomputer, a chip or the like) or processor (processor) to perform all or part of the steps of the methods of the embodiments described herein. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In addition, any combination of the various embodiments of the present invention may be made between the various embodiments, and should also be regarded as disclosed in the embodiments of the present invention as long as it does not deviate from the idea of the embodiments of the present invention.
Claims (10)
1. A method for determining whether a plurality of transformers are capable of being grouped, the method comprising:
determining the number of the plurality of transformers;
in the case where the number is 2, the transformation ratio deviation of the transformer is calculated using formula (1),
wherein Δk is the ratio deviation, k 1 Is the transformation ratio, k, of one of the transformers 2 For the transformation ratio of another said transformer,
judging whether the transformation ratio deviation is larger than a first preset value or not;
under the condition that the transformation ratio deviation is less than or equal to the first preset value, calculating the allocated load capacity of the transformer under the condition of simultaneously accessing a transformer substation according to a formula (2) and a formula (3),
wherein S is 1 Is the load capacity of one of the transformers, S 2 For the load capacity of the other one of said transformers,
for the impedance of one of said transformers, < >>
Impedance for another of the transformers;
calculating the capacity ratio of the transformer according to the load capacity, and judging whether the capacity ratio meets a preset condition or not;
in the case where it is judged that the capacity ratio satisfies a predetermined condition, a circulating current at the time of parallel operation of the transformers is calculated according to formula (4),
wherein I is c For the circulating current, U 1 A load voltage for the substation;
calculating the ratio of the circulating current to the rated current of each transformer respectively;
judging whether each ratio is smaller than or equal to a second preset value;
and under the condition that each ratio is smaller than or equal to the second preset value, determining that a plurality of transformers can be grouped.
2. The method according to claim 1, characterized in that the method comprises:
under the condition that the number is 3, calculating the transformation ratio deviation of any two transformers by adopting a formula (5),
wherein Δk is the ratio deviation, k 1 For the transformation ratio, k, of one of any two transformers 2 A transformer ratio for the other of every two transformers;
judging whether each transformation ratio deviation is smaller than or equal to the first preset value or not respectively;
under the condition that each transformation ratio deviation is smaller than or equal to the first preset value, calculating the distributed load capacity of any two transformers under the condition of being simultaneously connected to a transformer substation according to a formula (6) and a formula (7),
wherein S is 1 For the load capacity of one of any two transformers, S 2 Is composed of any two stationsThe load capacity of the other of said transformers,
for the impedance of one of any two of said transformers, +.>
Impedance of the other one of the two transformers is equal to the impedance of the other one of the two transformers;
calculating the capacity ratio of any two transformers according to the load capacity, and judging whether the capacity ratio meets the preset condition;
in the case where it is judged that the capacity ratio satisfies the predetermined condition, a circulating current at the time of parallel operation of the transformers is calculated according to the formulas (8) to (11),
wherein I is 1 The circulating current for one of a plurality of said transformers, I 2 For the circulating current of another one of the plurality of transformers, I 3 For the circulating current of a further one of the plurality of transformers, I L Z is the rated current of the transformer 1 For a plurality ofImpedance, Z, of one of the transformers 2 Impedance, Z, of another one of the plurality of transformers 3 For the impedance, k, of a further one of said plurality of transformers 1 A transformation ratio, k, for one of a plurality of said transformers 2 For the transformation ratio, k, of another one of said transformers 3 A transformer ratio for a further one of the plurality of transformers;
calculating the ratio of the circulating current to the rated current of the transformer respectively;
judging whether each ratio is smaller than or equal to a second preset value;
and under the condition that each ratio is smaller than or equal to the second preset value, determining that a plurality of transformers can be grouped.
3. The method according to claim 2, wherein the method further comprises:
and determining that a plurality of transformers cannot be grouped under the conditions that the transformation ratio deviation is larger than the first preset value, any transformation ratio deviation is larger than the first preset value, the capacity ratio does not meet the preset condition and/or any ratio is larger than the second preset value.
4. A system for determining whether a plurality of transformers can be grouped, the system comprising a processor for performing the method of any of claims 1 to 3.
5. A method for determining a pairing scheme for a transformer, the method comprising:
randomly selecting two transformers from a plurality of transformers;
judging whether the selected transformers can be grouped by adopting the method as set forth in claim 1;
under the condition that the selected transformers can be grouped, matching the selected transformers, and deleting the selected transformers from a plurality of transformers;
judging whether the number of the matched transformers is larger than or equal to a preset matching value;
outputting the assembled transformers and ending the method if it is determined whether the number of the assembled transformers is greater than or equal to the assembly value;
and under the condition that the selected transformers cannot be grouped, randomly selecting two transformers from the plurality of transformers again.
6. A method for determining a pairing scheme for a transformer, the method comprising:
randomly selecting three transformers from a plurality of transformers;
judging whether the selected transformers can be grouped by adopting the method as set forth in any one of claims 2 or 3;
under the condition that the selected transformers can be grouped, matching the selected transformers, and deleting the selected transformers from a plurality of transformers;
judging whether the number of the matched transformers is larger than or equal to a preset matching value;
outputting the assembled transformers and ending the method if it is determined whether the number of the assembled transformers is greater than or equal to the assembly value;
and under the condition that the selected transformers cannot be grouped, randomly selecting three transformers from the plurality of transformers again.
7. A system for determining a grouping scheme for a transformer, the system comprising a processor for performing the method of claim 5 or 6.
8. A method for detecting a transformer planning of a substation, the method comprising:
determining whether each set of transformers in the substation can be grouped by using the method as set forth in any one of claims 1 to 3;
and marking the group where the transformers which cannot be grouped in the transformer substation are in abnormal groups.
9. A system for detecting transformer planning of a substation, characterized in that the system comprises a processor for performing the method of claim 8.
10. A storage medium storing instructions for reading by a machine to cause the machine to perform the method of any one of claims 1, 2, 3, 5, 6 and 8.
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| CN201910963379.9A CN110826011B (en) | 2019-10-11 | 2019-10-11 | Method and system for judging whether multiple transformers can be grouped |
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