CN114924153A - Intelligent energy efficiency judgment system and method for power transformer - Google Patents
Intelligent energy efficiency judgment system and method for power transformer Download PDFInfo
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Abstract
The application belongs to the technical field of electric power, and discloses an intelligent energy efficiency judgment system for a power transformer, which is characterized by comprising a no-load loss test module, a data transmission module, a data receiving module, a data judgment module and a display module; wherein: the data transmission module is used for transmitting the no-load loss data, the load loss data and the transformer information obtained in the system to the data receiving module; the data receiving module is used for sending the received data and information to the data judging module; the data judgment module is used for intelligently judging the energy efficiency grade of the received data; and the display module is used for outputting and displaying the intelligent judgment result. The application also discloses an intelligent judging method for the energy efficiency of the power transformer, and the method mainly solves the problem that the energy efficiency grade of the power transformer can be accurately determined only by complicated memory or page turning in the prior art. The application mainly has the following beneficial technical effects: the system has simpler structure, easier implementation and higher detection efficiency, and is suitable for various correlative parties.
Description
Technical Field
The application belongs to the technical field of electric power, and particularly relates to an intelligent judgment system and an intelligent judgment method for energy efficiency of a power transformer.
Background
The electric energy mainly comes from coal, oil, water, wind, sun, nuclear and the like, transformers are widely used in an electric power system, the transformers are used as pivot buttons for electric power turnover and distribution, the loss amount of the transformers cannot be ignored, and unnecessary waste is caused by excessive loss, so that both nations and national grid companies put forward definite requirements on the energy efficiency of distribution transformers, energy efficiency detection is a precondition and technical basis for energy conservation, and related research and development are carried out in the industry according to the fact that systems and methods for testing and judging the energy efficiency of the electric power transformers are not ideal and rapid at home and abroad.
CN114034953A discloses a distribution transformer energy efficiency measurement and detection device, the structure of which comprises a placing table, an electric cabinet, a supporting frame and an orientation adjustment mechanism, wherein the electric cabinet is arranged on the upper end face of the placing table, the rear side end of the placing table is welded with the lower end of the supporting frame, a resistance testing head is adjusted to the orientation of abutting against the outer side of a coil, elastic support is carried out through a spring rod, a lead is synchronously pulled, a winding disc is driven to rotate through a torsion spring, the length of the lead is automatically adjusted, the resistance testing head is ensured to be normally electrified, the resistance testing head is prevented from falling off the coil, the middle end of the outer side of a transformer in the descending process of a linkage disc abuts against an extrusion sliding block, the two ends of the outer side of an attaching sheet are drawn towards the inner side, at the moment, the extrusion ball generates elasticity, thereby the abutting capability of the abutting sheet and the outer side surface of the transformer is improved, and the displacement of a detection head at the lower end of the linkage disc is avoided in the detection process of detection, therefore, the accuracy of the resistance detection of the coil by the detection head is improved.
CN214201623U discloses a comprehensive energy efficiency test platform, which comprises a switch cabinet, a rectifying device, a direct current bus, an asynchronous motor inversion branch, a variable frequency motor inversion branch, a charging pile energy efficiency detection branch, a transformer energy efficiency detection branch and a tested motor detection circuit; the detection circuit of the tested motor comprises a second low-voltage measuring device, a connection box of the tested motor, a load motor, a connection box of the load motor and a load motor inverter which are sequentially connected in series, wherein the output end of the load motor is connected with a direct-current bus through the connection box of the load motor and the load motor inverter; the transformer energy efficiency detection branch comprises a tested transformer, a transformer load, a sixth switch, a first breaker and a third breaker, and the charging pile energy efficiency detection branch comprises a tested charging pile, a charging pile load, a fifth switch, a first breaker and a second breaker.
The system in the prior art is complex, the transformer depends on manual judgment after detection, the speed is low, errors often occur, the system is not suitable for manufacturers, sellers and users who produce transformers in batches, after relevant values are measured, the relevant energy efficiency grade needs to be judged, thick standards need to be inquired, and the system is not only slow, but also troublesome in standard storage.
Accordingly, further improvements are desired in the industry to accommodate rapid, accurate testing and judgment.
Disclosure of Invention
In order to solve the problems, the invention discloses an intelligent energy efficiency judgment system and an intelligent energy efficiency judgment method for a power transformer, which are realized by adopting the following technical scheme.
An intelligent energy efficiency judgment system for a power transformer is characterized by comprising a no-load loss test module, a data transmission module, a data receiving module, a data judgment module and a display module; wherein: the data transmission module is used for transmitting the no-load loss data, the load loss data and the transformer information obtained in the system to the data receiving module; the data receiving module is used for sending the received data and information to the data judging module; the data judgment module is used for intelligently judging the energy efficiency grade of the received data; and the display module is used for outputting and displaying the intelligent judgment result.
The above power transformer energy efficiency intelligent judgment system is characterized in that: the data judgment module comprises a database and a judgment module.
The above power transformer energy efficiency intelligent judgment system is characterized in that: the database is an access or Mysql or Sqlserver or Excel workbook.
The above power transformer energy efficiency intelligent judgment system is characterized in that: the database has at least the following data columns: a first column describing transformer types, a second column describing material types, a third column describing rated capacity, a fourth column describing no-load loss, a fifth column describing load loss under a Dyn11/Yzn11 connection mode, a sixth column describing load loss under a Yyn0 connection mode, and a seventh column describing energy efficiency levels; the transformer type, the material type of the second column, the rated capacity of the third column, the no-load loss of the fourth column, the load loss of the Dyn11/Yzn11 connection mode of the fifth column, the load loss of the Yyn0 connection mode of the sixth column and the energy efficiency grade of the seventh column are correspondingly arranged by taking one row as a unit; for the transformers except for the 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer and the 10KV dry three-phase double-winding non-excitation voltage-regulating distribution transformer in the transformer types, the values of the material type and two columns of Yyn0 load loss are all null;
the transformer categories include the following categories with only one category in each row: 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer, 10KV dry three-phase double-winding non-excitation voltage-regulating distribution transformer, 35KV oil-immersed three-phase double-winding non-excitation voltage-regulating power transformer, 35KV oil-immersed three-phase double-winding on-load voltage-regulating power transformer, 66KV oil-immersed three-phase double-winding non-excitation voltage-regulating power transformer, 66KV oil-immersed three-phase double-winding on-load voltage-regulating power transformer, 110KV oil-immersed three-phase double-winding non-excitation voltage-regulating power transformer, 110KV oil-immersed three-phase double-winding low-voltage 35KV non-excitation voltage-regulating power transformer, 110KV oil-immersed three-winding non-excitation voltage-regulating transformer, 110KV oil-immersed three-phase double-winding on-load voltage-regulating power transformer, 110KV oil-immersed three-phase three-winding on-load voltage-regulating power transformer, 220KV oil-immersed three-winding non-excitation voltage-regulating power transformer, 220KV oil-immersed three-phase double-winding low-voltage 66KV no-excitation voltage-regulating power transformer, 220KV oil-immersed three-phase double-winding on-load voltage-regulating power transformer, 220KV oil-immersed three-phase three-winding on-load voltage-regulating auto power transformer, 330KV oil-immersed three-phase double-winding no-excitation voltage-regulating power transformer, 330KV oil-immersed three-phase three-winding no-excitation voltage-regulating power transformer (series winding end voltage regulation, medium voltage 110 KV), 330KV oil-immersed three-phase three-winding on-load voltage-regulating auto power transformer energy efficiency grade (medium voltage 110KV voltage regulation 110KV oil-immersed three-phase three-winding on-load voltage-regulating auto power transformer energy efficiency grade (medium voltage 220KV end voltage regulation), The system comprises a 500KV oil-immersed single-phase double-winding non-excitation voltage-regulating power transformer, a 500KV oil-immersed three-phase double-winding non-excitation voltage-regulating power transformer, a 500KV oil-immersed single-phase three-winding non-excitation voltage-regulating autotransformer energy efficiency grade (medium-voltage end voltage regulation) and a 500KV oil-immersed single-phase three-winding on-load voltage-regulating autotransformer energy efficiency grade (medium-voltage end voltage regulation);
in the material types, for 10KV oil immersed three-phase double-winding non-excitation voltage regulating distribution transformers: the material type is electrical steel strip or amorphous alloy, and for a dry type three-phase double-winding non-excitation voltage regulating distribution transformer with the type of 10 KV: the material type is electrical steel strip or amorphous alloy, and for other types of transformers: the material types are all empty;
the rated capacity is the rated capacity value of the transformer;
the no-load loss is a nominal no-load loss value of the transformer of the corresponding type and material type;
in the load loss under the Dyn11/Yzn11 connection mode, for a 10KV oil immersed three-phase double-winding non-excitation voltage regulation distribution transformer: the transformer of the corresponding type and material type is the nominal value of the load loss in the Dyn11/Yzn11 connection mode, and for the dry three-phase double-winding non-excitation voltage-regulating distribution transformer of the type of 10 KV: the transformer of the corresponding type and material type has the nominal value of the load loss under the Dyn11/Yzn11 connection mode, and the transformer of other types and material types has the nominal value of the load loss under the Dyn11/Yzn11 connection mode;
in the load loss under the Yyn0 connection mode, for an oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer of the type 10 KV: the transformer of the corresponding type and material type is the nominal value of the load loss in the Yyn0 connection mode, and for the dry three-phase double-winding non-excitation voltage-regulating distribution transformer of the type of 10 KV: the nominal value of the load loss of the transformer corresponding to the type and material type in the Yyn0 connection mode is null value for the transformers of other types and material types;
the energy efficiency grade is grade 1, grade 2 or grade 3.
The above power transformer energy efficiency intelligent judgment system is characterized in that: the judgment module compares the obtained transformer information in a database from top to bottom, and the judgment steps are as follows:
the first step is as follows: comparing transformer types: if the acquired transformer type information is consistent with the transformer type of the current row in the database, the transformer type is as follows: the 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer or the 10KV dry three-phase double-winding non-excitation voltage-regulating distribution transformer enters the second step; if the acquired transformer type information is consistent with the transformer type of the current row in the database and the transformer types are not the two types, entering a third step; if the acquired transformer type information is inconsistent with the transformer type of the current row in the database, if the current row is not the last row, the current row in the database moves downwards by one row and returns to the beginning of the step to continue the transformer type comparison, and if the current row is the last row, the eighth step is carried out;
the second step is that: comparing material types: if the obtained material type is consistent with the material type of the current row in the database, entering a third step; otherwise, if the current line is not the last line, the current line in the database moves down one line and returns to the first step, and if the current line is the last line, the eighth step is carried out;
the third step: comparing the rated capacity: if the obtained rated capacity is equal to the rated capacity of the current row in the database, entering the fourth step; otherwise, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the fourth step: comparing no-load loss: if the obtained no-load loss is not larger than the no-load loss of the current row in the database, entering the fifth step; otherwise, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the fifth step: comparing the load loss under the Dyn11/Yzn11 connection mode: if the load loss in the Dyn11/Yzn11 connection mode of the current row in the database is a null value, entering a sixth step; when the load loss of the current row in the Dyn11/Yzn11 connection mode is not null: if the obtained load loss under the Dyn11/Yzn11 connection mode is not more than the load loss under the Dyn11/Yzn11 connection mode of the current row in the database, entering a seventh step; if the obtained load loss under the Dyn11/Yzn11 connection mode is larger than the load loss under the Dyn11/Yzn11 connection mode of the current row in the database, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
and a sixth step: comparing the load loss under the Yyn0 connection mode: if the load loss in the Yyn0 connection mode of the current row in the database is a null value, entering the eighth step; when the load loss in the Yyn0 connection mode of the current row in the database is not a null value: if the obtained load loss under the Yyn0 connection mode is not more than the load loss under the Yyn0 connection mode of the current row in the database, entering a seventh step; if the obtained load loss under the Yyn0 connection mode is larger than the load loss under the Yyn0 connection mode of the current row in the database, if the current row is not the last row, the current row in the database moves downwards by one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the seventh step: obtaining an energy efficiency grade: the energy efficiency grade of the current row in the database is taken out, namely the energy efficiency grade of the current transformer is taken out, and the record of the current row in the database is transmitted to a display module to finish the test;
the eighth step: and the display module provides the energy efficiency grade of the test data which is wrong or not in accordance with the national standard.
The application mainly has the following beneficial technical effects: the system has simpler structure, easier implementation and higher detection efficiency, is suitable for production/sale/application sides, and does not need to remember relevant parameters and turn over book for inquiry any more.
Drawings
Fig. 1 is a schematic block diagram of the present application.
Fig. 2 is a block diagram of the testing principle of the present application.
In the figure: the method comprises the following steps of 1-no-load loss testing module, 2-load loss testing module, 3-data transmission module, 4-data receiving module, 5-data judging module, 6-display module, 51-database, 52-judging module, S1-first step, S2-second step, S3-third step, S4-fourth step, S5-fifth step, S6-sixth step, S7-seventh step and S8-eighth step.
Detailed Description
Referring to fig. 1 to 2, an intelligent energy efficiency judgment system for a power transformer is characterized by comprising a no-load loss test module 1, a load loss test module 2, a data transmission module 3, a data receiving module 4, a data judgment module 5 and a display module 6; wherein: the data transmission module is used for transmitting the no-load loss data, the load loss data and the transformer information obtained in the system to the data receiving module; the data receiving module is used for sending the received data and information to the data judging module; the data judgment module is used for intelligently judging the energy efficiency grade of the received data; and the display module is used for outputting and displaying the intelligent judgment result.
The above power transformer energy efficiency intelligent judgment system is characterized in that: the data determining module includes a database 51 and a determining module 52.
The above power transformer energy efficiency intelligent judgment system is characterized in that: the database is access or Mysql or Sqlserver or Excel workbook, or other type of database.
The above power transformer energy efficiency intelligent judgment system is characterized in that: the database has at least the following data columns: a first column describing transformer types, a second column describing material types, a third column describing rated capacity, a fourth column describing no-load loss, a fifth column describing load loss in a Dyn11/Yzn11 connection mode, a sixth column describing load loss in a Yyn0 connection mode, and a seventh column describing energy efficiency levels; the transformer type, the material type of the second column, the rated capacity of the third column, the no-load loss of the fourth column, the load loss of the Dyn11/Yzn11 connection mode of the fifth column, the load loss of the Yyn0 connection mode of the sixth column and the energy efficiency grade of the seventh column are correspondingly arranged by taking one row as a unit; for the transformers except for the 10KV oil immersed three-phase double-winding non-excitation voltage-regulating distribution transformer and the 10KV dry three-phase double-winding non-excitation voltage-regulating distribution transformer in the transformer type, the values of the material type and the Yyn0 load loss two columns are all null;
the transformer categories include the following categories with only one category in each row: 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer, 10KV dry three-phase double-winding non-excitation voltage-regulating distribution transformer, 35KV oil-immersed three-phase double-winding non-excitation voltage-regulating power transformer, 35KV oil-immersed three-phase double-winding on-load voltage-regulating power transformer, 66KV oil-immersed three-phase double-winding non-excitation voltage-regulating power transformer, 66KV oil-immersed three-phase double-winding on-load voltage-regulating power transformer, 110KV oil-immersed three-phase double-winding non-excitation voltage-regulating power transformer, 110KV oil-immersed three-phase double-winding low-voltage 35KV non-excitation voltage-regulating power transformer, 110KV oil-immersed three-winding non-excitation voltage-regulating transformer, 110KV oil-immersed three-phase double-winding on-load voltage-regulating power transformer, 110KV oil-immersed three-phase three-winding on-load voltage-regulating power transformer, 220KV oil-immersed three-winding non-excitation voltage-regulating power transformer, 220KV oil-immersed three-phase double-winding low-voltage 66KV no-excitation voltage-regulating power transformer, 220KV oil-immersed three-phase double-winding on-load voltage-regulating power transformer, 220KV oil-immersed three-phase three-winding on-load voltage-regulating auto power transformer, 330KV oil-immersed three-phase double-winding no-excitation voltage-regulating power transformer, 330KV oil-immersed three-phase three-winding no-excitation voltage-regulating power transformer (series winding end voltage regulation, medium voltage 110 KV), 330KV oil-immersed three-phase three-winding on-load voltage-regulating auto power transformer energy efficiency grade (medium voltage 110KV voltage regulation 110KV oil-immersed three-phase three-winding on-load voltage-regulating auto power transformer energy efficiency grade (medium voltage 220KV end voltage regulation), The system comprises a 500KV oil-immersed single-phase double-winding non-excitation voltage-regulating power transformer, a 500KV oil-immersed three-phase double-winding non-excitation voltage-regulating power transformer, a 500KV oil-immersed single-phase three-winding non-excitation voltage-regulating autotransformer energy efficiency grade (medium-voltage end voltage regulation) and a 500KV oil-immersed single-phase three-winding on-load voltage-regulating autotransformer energy efficiency grade (medium-voltage end voltage regulation);
in the material types, for 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformers: the material type is electrical steel strip or amorphous alloy, and for a dry type three-phase double-winding non-excitation voltage regulating distribution transformer with the type of 10 KV: the material type is electrical steel strip or amorphous alloy, and for other types of transformers: the material types are all empty;
the rated capacity is the rated capacity value of the transformer;
the no-load loss is a nominal no-load loss value of the transformer of the corresponding type and material type;
in the load loss under the Dyn11/Yzn11 connection mode, for a 10KV oil immersed three-phase double-winding non-excitation voltage regulation distribution transformer: the transformer of the corresponding type and material type is the nominal value of the load loss under the Dyn11/Yzn11 connection mode, and for the dry three-phase double-winding non-excitation voltage regulating distribution transformer of the type of 10 KV: the transformer of the corresponding type and material type has the nominal value of the load loss under the Dyn11/Yzn11 connection mode, and the transformer of other types and material types has the nominal value of the load loss under the Dyn11/Yzn11 connection mode;
in the load loss under the Yyn0 connection mode, for an oil immersed three-phase double-winding non-excitation voltage regulation distribution transformer with the type of 10 KV: the transformer of the corresponding type and material type is the nominal value of the load loss in the Yyn0 connection mode, and for the dry three-phase double-winding non-excitation voltage-regulating distribution transformer of the type of 10 KV: the nominal value of the load loss of the transformer corresponding to the type and material type in the Yyn0 connection mode is null value for the transformers of other types and material types;
the energy efficiency grade is grade 1 or grade 2 or grade 3.
The above power transformer energy efficiency intelligent judgment system is characterized in that: the judgment module compares the obtained transformer information in a database from top to bottom, and the judgment steps are as follows:
the first step is as follows: comparing transformer types: if the acquired transformer type information is consistent with the transformer type of the current row in the database, the transformer type is as follows: the 10KV oil immersed three-phase double-winding non-excitation voltage regulating distribution transformer or the 10KV dry three-phase double-winding non-excitation voltage regulating distribution transformer enters the second step; if the acquired transformer type information is consistent with the transformer type of the current row in the database and the transformer types are not the two types, entering a third step; if the acquired transformer type information is inconsistent with the transformer type of the current row in the database, if the current row is not the last row, the current row in the database moves downwards by one row and returns to the beginning of the step to continue the transformer type comparison, and if the current row is the last row, the eighth step is carried out;
the second step: comparing material types: if the obtained material type is consistent with the material type of the current row in the database, entering a third step; otherwise, if the current line is not the last line, the current line in the database moves down one line and returns to the first step, and if the current line is the last line, the eighth step is carried out;
the third step: comparing the rated capacity: if the obtained rated capacity is equal to the rated capacity of the current row in the database, entering the fourth step; otherwise, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the fourth step: comparing no-load loss: if the obtained no-load loss is not larger than the no-load loss of the current row in the database, entering the fifth step; otherwise, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the fifth step: comparing the load loss under the Dyn11/Yzn11 connection mode: if the load loss of the current row in the Dyn11/Yzn11 connection mode is null, entering a sixth step; when the load loss of the current row in the Dyn11/Yzn11 connection mode is not null: if the obtained load loss under the Dyn11/Yzn11 connection mode is not more than the load loss under the Dyn11/Yzn11 connection mode of the current row in the database, entering a seventh step; if the obtained load loss under the Dyn11/Yzn11 connection mode is larger than the load loss under the Dyn11/Yzn11 connection mode of the current row in the database, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
and a sixth step: comparing the load loss under the Yyn0 connection mode: if the load loss in the Yyn0 connection mode of the current row in the database is a null value, entering the eighth step; when the load loss of the current row in the Yyn0 connection mode is not a null value: if the obtained load loss under the Yyn0 connection mode is not more than the load loss under the Yyn0 connection mode of the current row in the database, entering a seventh step; if the obtained load loss under the Yyn0 connection mode is larger than the load loss under the Yyn0 connection mode of the current row in the database, if the current row is not the last row, the current row in the database moves downwards by one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the seventh step: obtaining an energy efficiency grade: the energy efficiency grade of the current row in the database is taken out, namely the energy efficiency grade of the current transformer is the energy efficiency standby grade, and the record of the current row in the database is transmitted to a display module to finish the test;
the eighth step: and (3) display output: and the display module provides the energy efficiency grade of the test data with errors or not conforming to the national standard.
An intelligent power transformer energy efficiency judgment method adopts the above intelligent power transformer energy efficiency judgment system, and is characterized in that: the intelligent energy efficiency judgment method for the power transformer comprises the following steps of:
firstly, an energy efficiency grade database is established, test data and information are obtained, and then:
the first step is as follows: comparing transformer types: if the acquired transformer type information is consistent with the transformer type of the current row in the database, the transformer type is as follows: the 10KV oil immersed three-phase double-winding non-excitation voltage regulating distribution transformer or the 10KV dry three-phase double-winding non-excitation voltage regulating distribution transformer enters the second step; if the acquired transformer type information is consistent with the transformer type of the current row in the database and the transformer types are not the two types, entering a third step; if the acquired transformer type information is inconsistent with the transformer type of the current row in the database, if the current row is not the last row, the current row in the database moves downwards by one row and returns to the beginning of the step to continue the transformer type comparison, and if the current row is the last row, the eighth step is carried out;
the second step is that: comparing material types: if the obtained material type is consistent with the material type of the current row in the database, entering a third step; otherwise, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the third step: comparing the rated capacity: if the obtained rated capacity is equal to the rated capacity of the current row in the database, entering the fourth step; otherwise, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the fourth step: comparing the no-load loss: if the obtained no-load loss is not larger than the no-load loss of the current row in the database, entering the fifth step; otherwise, if the current line is not the last line, the current line in the database moves down one line and returns to the first step, and if the current line is the last line, the eighth step is carried out;
the fifth step: comparing the load loss under the Dyn11/Yzn11 connection mode: if the load loss in the Dyn11/Yzn11 connection mode of the current row in the database is a null value, entering a sixth step; when the load loss of the current row in the Dyn11/Yzn11 connection mode is not null: if the obtained load loss under the Dyn11/Yzn11 connection mode is not more than the load loss under the Dyn11/Yzn11 connection mode of the current row in the database, entering a seventh step; if the obtained load loss under the Dyn11/Yzn11 connection mode is larger than the load loss under the Dyn11/Yzn11 connection mode of the current row in the database, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
and a sixth step: comparing the load loss under the Yyn0 connection mode: if the load loss in the Yyn0 connection mode of the current row in the database is a null value, entering the eighth step; when the load loss of the current row in the Yyn0 connection mode is not a null value: if the obtained load loss under the Yyn0 connection mode is not more than the load loss under the Yyn0 connection mode of the current row in the database, entering a seventh step; if the obtained load loss under the Yyn0 connection mode is larger than the load loss under the Yyn0 connection mode of the current row in the database, if the current row is not the last row, the current row in the database moves downwards by one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the seventh step: obtaining an energy efficiency grade: the energy efficiency grade of the current row in the database is taken out, namely the energy efficiency grade of the current transformer is taken out, and the record of the current row in the database is transmitted to a display module to finish the test;
the eighth step: and (3) display output: and the display module provides the energy efficiency grade of the test data with errors or not conforming to the national standard.
In the determination step/determination method of the present application, the database and the steps can be reduced, and only at least one of the following types of transformers is determined: 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer, 10KV dry three-phase double-winding non-excitation voltage-regulating distribution transformer, 35KV oil-immersed three-phase double-winding non-excitation voltage-regulating power transformer, 35KV oil-immersed three-phase double-winding on-load voltage-regulating power transformer, 66KV oil-immersed three-phase double-winding non-excitation voltage-regulating power transformer, 66KV oil-immersed three-phase double-winding on-load voltage-regulating power transformer, 110KV oil-immersed three-phase double-winding non-excitation voltage-regulating power transformer, 110KV oil-immersed three-phase double-winding low-voltage 35KV non-excitation voltage-regulating power transformer, 110KV oil-immersed three-winding non-excitation voltage-regulating transformer, 110KV oil-immersed three-phase double-winding on-load voltage-regulating power transformer, 110KV oil-immersed three-phase three-winding on-load voltage-regulating power transformer, 220KV oil-immersed three-winding non-excitation voltage-regulating power transformer, 220KV oil-immersed three-phase double-winding low-voltage 66KV no-excitation voltage-regulating power transformer, 220KV oil-immersed three-phase double-winding on-load voltage-regulating power transformer, 220KV oil-immersed three-phase three-winding on-load voltage-regulating auto power transformer, 330KV oil-immersed three-phase double-winding no-excitation voltage-regulating power transformer, 330KV oil-immersed three-phase three-winding no-excitation voltage-regulating power transformer (series winding end voltage regulation, medium voltage 110 KV), 330KV oil-immersed three-phase three-winding on-load voltage-regulating auto power transformer energy efficiency grade (medium voltage 110KV voltage regulation 110KV oil-immersed three-phase three-winding on-load voltage-regulating auto power transformer energy efficiency grade (medium voltage 220KV end voltage regulation), The method is simplified, and the transformer is suitable for different transformer production plants, merchants, users and the like, and the simplification is the same, and the transformer can be obtained by technical personnel in the field as long as the transformer is obtained by the inspiration of the application and does not need creative labor, and the transformer falls within the protection range of the application.
As a further simplification, in the determination method of the present application, the database may include a plurality of tables, one for each type of transformer, that is: the table with the following correspondences: 10KV oil-immersed three-phase double-winding non-excitation voltage regulation distribution transformer, 10KV dry three-phase double-winding non-excitation voltage regulation distribution transformer, 35KV oil-immersed three-phase double-winding non-excitation voltage regulation power transformer, 35KV oil-immersed three-phase double-winding on-load voltage regulation power transformer, 66KV oil-immersed three-phase double-winding non-excitation voltage regulation power transformer, 66KV oil-immersed three-phase double-winding on-load voltage regulation power transformer, 110KV oil-immersed three-phase double-winding non-excitation voltage regulation power transformer, 110KV oil-immersed three-phase double-winding low-voltage 35KV non-excitation voltage regulation power transformer, 110KV oil-immersed three-phase three-winding non-excitation voltage regulation power transformer, 110KV oil-immersed three-phase double-winding on-load voltage regulation power transformer, 220KV oil-immersed three-phase double-winding non-excitation voltage regulation power transformer, 220KV oil-immersed three-phase three-winding non-excitation voltage regulation power transformer, 220KV oil-immersed three-phase double-winding low-voltage 66KV no-excitation voltage-regulating power transformer, 220KV oil-immersed three-phase double-winding on-load voltage-regulating power transformer, 220KV oil-immersed three-phase three-winding on-load voltage-regulating auto power transformer, 330KV oil-immersed three-phase double-winding no-excitation voltage-regulating power transformer, 330KV oil-immersed three-phase three-winding no-excitation voltage-regulating power transformer (series winding end voltage regulation, medium voltage 110 KV), 330KV oil-immersed three-phase three-winding on-load voltage-regulating auto power transformer energy efficiency grade (medium voltage 110KV voltage regulation 110KV oil-immersed three-phase three-winding on-load voltage-regulating auto power transformer energy efficiency grade (medium voltage 220KV end voltage regulation), The 500KV oil-immersed single-phase double-winding non-excitation voltage-regulating power transformer, the 500KV oil-immersed three-phase double-winding non-excitation voltage-regulating power transformer, the 500KV oil-immersed single-phase three-winding non-excitation voltage-regulating autotransformer energy efficiency grade (medium-voltage end voltage regulation) and the 500KV oil-immersed single-phase three-winding on-load voltage-regulating autotransformer energy efficiency grade (medium-voltage end voltage regulation) have 27 tables,
firstly, acquiring test data and information of a system for a transformer, directly prompting an information input error if the information is not matched with the information of the transformer in a table, judging after the information is accurate, wherein the information at least comprises the type of the transformer, and judging the acquired test data of the transformer if the information is accurate; if the rated capacity is a null value, directly prompting a rated capacity entry error, and judging after the rated capacity is accurate; if the type of the transformer is a 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer, or: if the obtained load loss in the Dyn11/Yzn11 connection mode and the obtained load loss in the Yyn0 connection mode are both null values or both null values, the load loss recording error is directly prompted, and judgment is performed after the load loss is accurate; if the type of the transformer is not the 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer, or not: if the obtained load loss in the Dyn11/Yzn11 connection mode is a null value, the 10KV dry three-phase double-winding no-excitation voltage-regulating distribution transformer directly prompts a load loss entry error, and judges after the load loss is accurate;
when the transformer is judged, the transformer type is only needed to be inquired and judged in the corresponding tables, and each table is sequentially arranged from top to bottom according to the rated capacity of the transformer; if there is a material type: arranging one material in sequence from top to bottom according to the rated capacity, and then arranging the other material in sequence from top to bottom according to the rated capacity; comparing the no-load loss line by line, if the obtained no-load loss is not more than the no-load loss in the table, comparing the load loss, if the obtained no-load loss is more than the no-load loss in the table, entering the next line, and still comparing the obtained no-load loss with the no-load loss in the table, if the obtained no-load loss is not more than the no-load loss in the table, comparing the load loss, and repeating the steps, if the last line of the table is obtained and the obtained no-load loss is still more than the no-load loss in the table, displaying that the no-load loss exceeds the standard, and the energy efficiency of the transformer does not accord with the network access regulation;
if the obtained load loss under the Dyn11/Yzn11 connection mode is not a null value: if the obtained load loss in the Dyn11/Yzn11 connection mode is not more than the load loss in the Dyn11/Yzn11 connection mode in the table, reading the energy efficiency grade in the table, displaying and storing the energy efficiency grade, if the obtained load loss in the Dyn11/Yzn11 connection mode is more than the load loss in the Dyn11/Yzn11 connection mode in the table, entering the next row, comparing the obtained load loss in the Dyn11/Yzn11 connection mode with the obtained load loss in the Dyn11/Yzn11 connection mode in the table, if the obtained load loss in the Dyn11/Yzn11 connection mode is not more than the load loss in the Dyn11/Yzn11 connection mode in the table, reading the energy efficiency grade in the table, displaying and storing the energy efficiency grade, and repeating the steps, if the last row of the table is used and the obtained load loss in the Dyn11/Yzn11 connection mode is still more than the load loss in the Dyn11/Yzn11 connection mode in the table, displaying that the energy efficiency grade exceeds the energy efficiency of the transformer;
if the obtained load loss under the Dyn11/Yzn11 connection mode is a null value: and if the obtained load loss under the Yyn0 load loss connection mode is not more than the load loss under the Yyn0 load loss connection mode in the table, reading the energy efficiency grade in the table, displaying and storing the energy efficiency grade, if the obtained load loss under the Yyn0 load loss connection mode is more than the load loss under the Yyn0 load loss connection mode in the table, entering the next row, comparing the obtained load loss under the Yyn0 load loss connection mode with the obtained load loss under the Yyn0 load loss connection mode in the table, if the obtained load loss under the Yyn0 load loss connection mode is not more than the load loss under the Yyn0 load loss connection mode in the table, reading the energy efficiency grade in the table, displaying and storing the energy efficiency grade, and repeating the steps, if the last row of the table is obtained and the obtained load loss under the Yyn0 load loss connection mode is still more than the load loss under the Yyn0 load loss connection mode, displaying that the load loss exceeds the energy efficiency grade of the transformer and the energy efficiency grade, and entering the network regulation.
As a further simplification, other tables outside the tables of the 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer and the 10KV dry three-phase double-winding non-excitation voltage-regulating distribution transformer may not exist: load loss and material types under the Yyn0 load loss connection mode are listed, so that the table is simpler, data are fewer, and subsequent maintenance is more convenient.
In the application, the relevant standards are integrated in the system and judged by an intelligent method, so that accurate judgment is realized, the speed is high, and personnel memory is not needed.
In the present application, the column describing the type of transformer, the column describing the type of material, the column describing the rated capacity, the column describing the no-load loss, the column describing the load loss in the Dyn11/Yzn11 connection mode, the column describing the load loss in the Yyn0 connection mode, and the column describing the energy efficiency class may be other column names as long as they represent the corresponding contents, such as: byqzl, cl, edrl, kzsh, dyn11, Yyn0, nxdj; the following steps are repeated: sheet1, sheet2, sheet3, sheet4, sheet5, sheet6, sheet7, and the like, to name a few.
In the application, column names and cell contents related to a large number of characters in a table of a database can be replaced by simple and easy-to-remember symbols, letters, character strings and the like, so that the operation is simplified, for example, in the following table, A represents a 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer, and other tables can be simulated, but not limited to, and certainly, when the column names and the cell contents are combined in one table, the column names and the cell contents can be distinguished from one another.
In the application, the tables of the transformers of other models conform to the regulations in GB 20052.
The application mainly has the following beneficial technical effects: the system has simpler structure, easier implementation and higher detection efficiency, is suitable for production/sale/application sides, and does not need to remember relevant parameters and turn over book for inquiry any more.
The above-described embodiments are merely preferred technical solutions of the present application, and should not be construed as limiting the present application. The protection scope of the present application shall be defined by the claims and equivalents thereof including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (8)
1. An intelligent energy efficiency judgment system for a power transformer is characterized by comprising a no-load loss test module, a data transmission module, a data receiving module, a data judgment module and a display module; wherein: the data transmission module is used for transmitting the no-load loss data, the load loss data and the transformer information obtained in the system to the data receiving module; the data receiving module is used for sending the received data and information to the data judging module; the data judgment module is used for intelligently judging the energy efficiency grade of the received data; and the display module is used for outputting and displaying the intelligent judgment result.
2. The power transformer energy efficiency intelligent judgment system according to claim 1, characterized in that: the data judgment module comprises a database and a judgment module.
3. The power transformer energy efficiency intelligent judgment system according to claim 2, characterized in that: the database is an access or Mysql or Excel workbook.
4. The power transformer energy efficiency intelligent judgment system according to claim 3, characterized in that: the database has at least the following data columns: a first column describing transformer types, a second column describing material types, a third column describing rated capacity, a fourth column describing no-load loss, a fifth column describing load loss in a Dyn11/Yzn11 connection mode, a sixth column describing load loss in a Yyn0 connection mode, and a seventh column describing energy efficiency levels; the transformer type, the material type of the second column, the rated capacity of the third column, the no-load loss of the fourth column, the load loss of the Dyn11/Yzn11 connection mode of the fifth column, the load loss of the Yyn0 connection mode of the sixth column and the energy efficiency grade of the seventh column are correspondingly arranged in a row; for the transformers except for the 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer and the 10KV dry three-phase double-winding non-excitation voltage-regulating distribution transformer in the transformer types, the values of the material type and two columns of Yyn0 load loss are all null;
the transformer categories include the following and have only one category in each row: 10KV oil-immersed three-phase double-winding non-excitation voltage regulation distribution transformer, 10KV dry three-phase double-winding non-excitation voltage regulation distribution transformer, 35KV oil-immersed three-phase double-winding non-excitation voltage regulation power transformer, 35KV oil-immersed three-phase double-winding on-load voltage regulation power transformer, 66KV oil-immersed three-phase double-winding non-excitation voltage regulation power transformer, 66KV oil-immersed three-phase double-winding on-load voltage regulation power transformer, 110KV oil-immersed three-phase double-winding non-excitation voltage regulation power transformer, 110KV oil-immersed three-phase double-winding low-voltage 35KV non-excitation voltage regulation power transformer, 110KV oil-immersed three-phase three-winding non-excitation voltage regulation power transformer, 110KV oil-immersed three-phase double-winding on-load voltage regulation power transformer, 220KV oil-immersed three-phase double-winding non-excitation voltage regulation power transformer, 220KV oil-immersed three-phase three-winding non-excitation voltage regulation power transformer, 220KV oil-immersed three-phase double-winding low-voltage 66KV off-excitation-free voltage-regulating power transformer, 220KV oil-immersed three-phase double-winding on-load voltage-regulating power transformer, 220KV oil-immersed three-phase three-winding on-load voltage-regulating auto-transformer, 330KV oil-immersed three-phase three-winding off-excitation-free voltage-regulating power transformer, 330KV oil-immersed three-phase three-winding off-excitation-free voltage-regulating auto-transformer (series winding end voltage regulation, medium voltage 110 KV), 330KV oil-immersed three-phase three-winding on-load voltage-regulating auto-transformer energy efficiency grade (series winding end voltage regulation, medium voltage 110 KV), 330KV oil-immersed three-phase three-winding on-load voltage-regulating auto-load voltage-transformer grade (medium voltage 110KV end terminal), 330KV oil-immersed three-phase three-winding on-load voltage-regulating auto-load power transformer energy efficiency grade (medium voltage 220KV end terminal), The system comprises a 500KV oil-immersed single-phase double-winding non-excitation voltage-regulating power transformer, a 500KV oil-immersed three-phase double-winding non-excitation voltage-regulating power transformer, a 500KV oil-immersed single-phase three-winding non-excitation voltage-regulating autotransformer energy efficiency grade (medium-voltage end voltage regulation) and a 500KV oil-immersed single-phase three-winding on-load voltage-regulating autotransformer energy efficiency grade (medium-voltage end voltage regulation);
in the material types, for 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformers: the material type is electrical steel strip or amorphous alloy, and for a dry type three-phase double-winding non-excitation voltage regulating distribution transformer with the type of 10 KV: the material type is electrical steel strip or amorphous alloy, and for other types of transformers: the material types are all empty;
the rated capacity is the rated capacity value of the transformer;
the no-load loss is a nominal no-load loss value of the transformer of the corresponding type and material type;
in the load loss under the Dyn11/Yzn11 connection mode, for a 10KV oil immersed three-phase double-winding non-excitation voltage regulating distribution transformer: the transformer of the corresponding type and material type is the nominal value of the load loss in the Dyn11/Yzn11 connection mode, and for the dry three-phase double-winding non-excitation voltage-regulating distribution transformer of the type of 10 KV: the transformer of the corresponding type and material type has the nominal value of the load loss under the Dyn11/Yzn11 connection mode, and the transformer of other types and material types has the nominal value of the load loss under the Dyn11/Yzn11 connection mode;
in the load loss under the Yyn0 connection mode, for an oil immersed three-phase double-winding non-excitation voltage regulation distribution transformer with the type of 10 KV: the transformer corresponding to the type and material type is the nominal value of the load loss in the Yyn0 connection mode, and for the dry type 10KV three-phase double-winding non-excitation voltage-regulating distribution transformer: the nominal value of the load loss of the transformer corresponding to the type and material type in the Yyn0 connection mode is null value for the transformers of other types and material types;
the energy efficiency grade is grade 1, grade 2 or grade 3.
5. The power transformer energy efficiency intelligent judgment system according to claim 4, characterized in that: in the database, the 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer partially conforms to the constraint relation of the following table, wherein A represents the 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer.
6. The power transformer energy efficiency intelligent judgment system according to claim 5, characterized in that: the judgment module compares the obtained transformer information in a database from top to bottom, and the judgment steps are as follows:
the first step is as follows: comparing transformer types: if the acquired transformer type information is consistent with the transformer type of the current row in the database, the transformer type is as follows: the 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer or the 10KV dry three-phase double-winding non-excitation voltage-regulating distribution transformer enters the second step; if the acquired transformer type information is consistent with the transformer type of the current row in the database and the transformer types are not the two types, entering a third step; if the acquired transformer type information is inconsistent with the transformer type of the current row in the database, if the current row is not the last row, the current row in the database moves downwards by one row and returns to the beginning of the step to continue the transformer type comparison, and if the current row is the last row, the eighth step is carried out;
the second step: comparing material types: if the obtained material type is consistent with the material type of the current row in the database, entering a third step; otherwise, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the third step: comparing the rated capacity: if the obtained rated capacity is equal to the rated capacity of the current row in the database, entering a fourth step; otherwise, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the fourth step: comparing the no-load loss: if the obtained no-load loss is not larger than the no-load loss of the current row in the database, entering a fifth step; otherwise, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the fifth step: comparing the load loss under the Dyn11/Yzn11 connection mode: if the load loss in the Dyn11/Yzn11 connection mode of the current row in the database is a null value, entering a sixth step; when the load loss of the current row in the Dyn11/Yzn11 connection mode is not null: if the obtained load loss under the Dyn11/Yzn11 connection mode is not more than the load loss under the Dyn11/Yzn11 connection mode of the current row in the database, entering a seventh step; if the obtained load loss under the Dyn11/Yzn11 connection mode is larger than the load loss under the Dyn11/Yzn11 connection mode of the current row in the database, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
and a sixth step: comparing the load loss under the Yyn0 connection mode: if the load loss in the Yyn0 connection mode of the current row in the database is a null value, entering the eighth step; when the load loss of the current row in the Yyn0 connection mode is not a null value: if the obtained load loss under the Yyn0 connection mode is not more than the load loss under the Yyn0 connection mode of the current row in the database, entering a seventh step; if the obtained load loss under the Yyn0 connection mode is larger than the load loss under the Yyn0 connection mode of the current row in the database, if the current row is not the last row, the current row in the database moves downwards by one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the seventh step: obtaining an energy efficiency grade: the energy efficiency grade of the current row in the database is taken out, namely the energy efficiency grade of the current transformer is the energy efficiency standby grade, and the record of the current row in the database is transmitted to a display module to finish the test;
eighth step: and the display module provides the energy efficiency grade of the test data with errors or not conforming to the national standard.
7. An intelligent power transformer energy efficiency judgment method, which adopts the intelligent power transformer energy efficiency judgment system of any one of claims 1 to 5, and is characterized in that: the intelligent energy efficiency judgment method for the power transformer comprises the following steps of:
firstly, an energy efficiency grade database is established, test data and information are obtained, and then:
the first step is as follows: comparing transformer types: if the acquired transformer type information is consistent with the transformer type of the current row in the database, the transformer type is as follows: the 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer or the 10KV dry three-phase double-winding non-excitation voltage-regulating distribution transformer enters the second step; if the acquired transformer type information is consistent with the transformer type of the current row in the database and the transformer types are not the two types, entering a third step; if the acquired transformer type information is inconsistent with the transformer type of the current row in the database, if the current row is not the last row, the current row in the database moves downwards one row and returns to the beginning of the step to continue the transformer type comparison, and if the current row is the last row, the eighth step is carried out;
the second step: comparing material types: if the obtained material type is consistent with the material type of the current row in the database, entering a third step; otherwise, if the current line is not the last line, the current line in the database moves down one line and returns to the first step, and if the current line is the last line, the eighth step is carried out;
the third step: comparing the rated capacity: if the obtained rated capacity is equal to the rated capacity of the current row in the database, entering the fourth step; otherwise, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the fourth step: comparing the no-load loss: if the obtained no-load loss is not larger than the no-load loss of the current row in the database, entering the fifth step; otherwise, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the fifth step: comparing the load loss under the Dyn11/Yzn11 connection mode: if the load loss in the Dyn11/Yzn11 connection mode of the current row in the database is a null value, entering a sixth step; when the load loss of the current line in the Dyn11/Yzn11 connection mode is not null: if the obtained load loss under the Dyn11/Yzn11 connection mode is not more than the load loss under the Dyn11/Yzn11 connection mode of the current row in the database, entering a seventh step; if the obtained load loss under the Dyn11/Yzn11 connection mode is larger than the load loss under the Dyn11/Yzn11 connection mode of the current row in the database, if the current row is not the last row, the current row in the database moves down one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
and a sixth step: comparing the load loss under the Yyn0 connection mode: if the load loss in the Yyn0 connection mode of the current row in the database is a null value, entering the eighth step; when the load loss of the current row in the Yyn0 connection mode is not a null value: if the obtained load loss under the Yyn0 connection mode is not more than the load loss under the Yyn0 connection mode of the current row in the database, entering a seventh step; if the obtained load loss under the Yyn0 connection mode is larger than the load loss under the Yyn0 connection mode of the current row in the database, if the current row is not the last row, the current row in the database moves downwards by one row and returns to the first step, and if the current row is the last row, the eighth step is carried out;
the seventh step: obtaining an energy efficiency grade: the energy efficiency grade of the current row in the database is taken out, namely the energy efficiency grade of the current transformer is the energy efficiency standby grade, and the record of the current row in the database is transmitted to a display module to finish the test;
eighth step: and (4) display and output: and the display module provides the energy efficiency grade of the test data which is wrong or not in accordance with the national standard.
8. An intelligent power transformer energy efficiency judgment method, which adopts the intelligent power transformer energy efficiency judgment system of any one of claims 1 to 5, and is characterized in that: the database comprises a plurality of tables, and each type of transformer corresponds to one table, namely: the table with the following correspondences: 10KV oil-immersed three-phase double-winding non-excitation voltage regulation distribution transformer, 10KV dry three-phase double-winding non-excitation voltage regulation distribution transformer, 35KV oil-immersed three-phase double-winding non-excitation voltage regulation power transformer, 35KV oil-immersed three-phase double-winding on-load voltage regulation power transformer, 66KV oil-immersed three-phase double-winding non-excitation voltage regulation power transformer, 66KV oil-immersed three-phase double-winding on-load voltage regulation power transformer, 110KV oil-immersed three-phase double-winding non-excitation voltage regulation power transformer, 110KV oil-immersed three-phase double-winding low-voltage 35KV non-excitation voltage regulation power transformer, 110KV oil-immersed three-phase three-winding non-excitation voltage regulation power transformer, 110KV oil-immersed three-phase double-winding on-load voltage regulation power transformer, 220KV oil-immersed three-phase double-winding non-excitation voltage regulation power transformer, 220KV oil-immersed three-phase three-winding non-excitation voltage regulation power transformer, 220KV oil-immersed three-phase double-winding low-voltage 66KV off-excitation-free voltage-regulating power transformer, 220KV oil-immersed three-phase double-winding on-load voltage-regulating power transformer, 220KV oil-immersed three-phase three-winding on-load voltage-regulating auto-transformer, 330KV oil-immersed three-phase three-winding off-excitation-free voltage-regulating power transformer, 330KV oil-immersed three-phase three-winding off-excitation-free voltage-regulating auto-transformer (series winding end voltage regulation, medium voltage 110 KV), 330KV oil-immersed three-phase three-winding on-load voltage-regulating auto-transformer energy efficiency grade (series winding end voltage regulation, medium voltage 110 KV), 330KV oil-immersed three-phase three-winding on-load voltage-regulating auto-load voltage-transformer grade (medium voltage 110KV end terminal), 330KV oil-immersed three-phase three-winding on-load voltage-regulating auto-load power transformer energy efficiency grade (medium voltage 220KV end terminal), The transformer comprises a 500KV oil-immersed single-phase double-winding non-excitation voltage-regulating power transformer, a 500KV oil-immersed three-phase double-winding non-excitation voltage-regulating power transformer, a 500KV oil-immersed single-phase three-winding non-excitation voltage-regulating autotransformer energy efficiency grade (medium-voltage end voltage regulation) and a 500KV oil-immersed single-phase three-winding on-load voltage-regulating autotransformer energy efficiency grade (medium-voltage end voltage regulation), wherein the transformer is provided with 27 tables; firstly, acquiring test data and information of a system on a transformer, directly prompting an information input error if the information is not matched with the information of the transformer in a table, judging after the information is accurate, wherein the information at least comprises the type of the transformer, and judging the acquired test data of the transformer if the information is accurate; if the rated capacity is a null value, directly prompting a rated capacity entry error, and judging after the rated capacity is accurate; if the type of the transformer is a 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer, or: if the obtained load loss in the Dyn11/Yzn11 connection mode and the obtained load loss in the Yyn0 connection mode are both null values or both null values, the load loss recording error is directly prompted, and judgment is carried out after the load loss is accurate; if the type of the transformer is not the 10KV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer, or not: if the obtained load loss in the Dyn11/Yzn11 connection mode is an empty value, a load loss entry error is directly prompted, and judgment is performed after the load loss is accurate;
when the transformer is judged, the transformer type is only needed to be inquired and judged in the corresponding tables, and each table is sequentially arranged from top to bottom according to the rated capacity of the transformer; if there is a material type: arranging one material in sequence from top to bottom according to the rated capacity, and then arranging the other material in sequence from top to bottom according to the rated capacity; comparing the no-load loss line by line, if the obtained no-load loss is not greater than the no-load loss in the table, then comparing the load loss, if the obtained no-load loss is greater than the no-load loss in the table, entering the next line, and still comparing the obtained no-load loss with the no-load loss in the table, if the obtained no-load loss is not greater than the no-load loss in the table, then comparing the load loss, and repeating the steps, if the last line of the table is formed, and the obtained no-load loss is still greater than the no-load loss in the table, then displaying that the no-load loss exceeds the standard and the energy efficiency of the transformer does not accord with the network access regulation;
if the obtained load loss under the Dyn11/Yzn11 connection mode is not a null value: if the obtained load loss in the Dyn11/Yzn11 connection mode is not more than the load loss in the Dyn11/Yzn11 connection mode in the table, reading the energy efficiency grade in the table, displaying and storing the energy efficiency grade, if the obtained load loss in the Dyn11/Yzn11 connection mode is more than the load loss in the Dyn11/Yzn11 connection mode in the table, entering the next row, comparing the obtained load loss in the Dyn11/Yzn11 connection mode with the obtained load loss in the Dyn11/Yzn11 connection mode in the table, if the obtained load loss in the Dyn11/Yzn11 connection mode is not more than the load loss in the Dyn11/Yzn11 connection mode in the table, reading the energy efficiency grade in the table, displaying and storing the energy efficiency grade, and repeating the steps, if the last row of the table is used and the obtained load loss in the Dyn11/Yzn11 connection mode is still more than the load loss in the Dyn11/Yzn11 connection mode in the table, displaying that the energy efficiency grade exceeds the energy efficiency of the transformer;
if the obtained load loss under the Dyn11/Yzn11 connection mode is a null value: and if the obtained load loss in the Yyn0 load loss connection mode is not more than the load loss in the Yyn0 load loss connection mode in the table, reading the energy efficiency grade in the table, displaying and storing the energy efficiency grade, if the obtained load loss in the Yyn0 load loss connection mode is more than the load loss in the Yyn0 load loss connection mode in the table, entering the next row, comparing the obtained load loss in the Yyn0 load loss connection mode with the obtained load loss in the Yyn0 load loss connection mode in the table, if the obtained load loss in the Yyn0 load loss connection mode is not more than the load loss in the Yyn0 load loss connection mode in the table, reading the energy efficiency grade in the table, displaying and storing the energy efficiency grade, and repeating the steps, if the last row of the table is obtained and the obtained load loss in the Yyn0 load loss connection mode is still more than the load loss in the Yyn0 load loss connection mode in the table, displaying that the load loss does not accord with the over-exceeding transformer energy efficiency grade, and entering the network rule.
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