CN114527341A - Power transformer efficiency grade detection device - Google Patents
Power transformer efficiency grade detection device Download PDFInfo
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- CN114527341A CN114527341A CN202210070122.2A CN202210070122A CN114527341A CN 114527341 A CN114527341 A CN 114527341A CN 202210070122 A CN202210070122 A CN 202210070122A CN 114527341 A CN114527341 A CN 114527341A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to a power transformer energy efficiency grade detection device, which comprises an IPC central control unit, a PLC electric core controller, entity keys, a direct current resistance test unit, a no-load/load test unit, an output wiring switching unit and an output wiring interface, wherein the IPC central control unit is connected with the PLC electric core controller through a power line; the IPC central control unit is in interactive communication with the PLC electrical core controller, the entity key, the no-load/load testing unit and the output wiring switching unit are respectively connected with the PLC electrical core controller, the direct current resistance testing unit and the no-load/load testing unit are respectively connected with the output wiring switching unit, and the output wiring interface is connected with the output wiring switching unit. The method is simple and convenient to operate, and meets the requirement of detecting the energy efficiency grade of the power transformer.
Description
Technical Field
The invention belongs to the field of electrical test equipment, and particularly relates to a power transformer energy efficiency grade detection device for detecting the energy efficiency grade of a power transformer.
Background
According to the standard requirements of GB20052-2020 Power Transformer energy efficiency limiting value and energy efficiency grade, the energy efficiency (no-load loss and load loss) test limiting value of a power transformer produced after 2020 should meet the requirements of the standard, and two fundamental bases of energy efficiency judgment are two parameters of the no-load loss value and the load loss value. According to the standard requirements of JB/T501-2006 power transformer test guide, the transformer needs to be corrected in both no-load loss test and load loss test, and the no-load loss test needs to be corrected in waveform (correction of the difference between the average voltage value and the effective value); during the load loss test, temperature correction, resistance loss correction and other loss corrections are needed, so that during the two tests, the direct current resistance value of the transformer winding needs to be measured first, so that no-load and load loss tests can be performed, and corresponding correction can be performed.
At present, no special equipment for detecting the energy efficiency grade of the power transformer exists in the market, and all the equipment are only separated independent item test instruments, such as a direct current resistance tester, a low-voltage method air load loss tester (not meeting the requirements of test standards and not carrying out direct current resistance and temperature correction), an air load loss tester (not carrying out direct current resistance test and temperature correction), and the like, so that no integrated single-set equipment capable of completing the energy efficiency grade detection exists, and a plurality of kinds of equipment need to be prepared for combined use during use, and the following problems exist:
1. each test item needs an independent instrument, the power supply and the test wiring of the test item are independent, each test item needs power supply and test wiring, wiring errors are easy to occur, the instrument or the tested transformer is damaged or the measurement result is inaccurate, and the test efficiency is extremely low;
2. because the test instruments are dispersed and independent, the test result needs to be manually recorded after each test item is finished, so that recording errors and modification are easy to occur, and the subjective characteristic of manual intervention is achieved, so that the reliability of the result is reduced, and the reliability of the energy efficiency evaluation result is greatly reduced;
3. when no-load loss and load loss are tested, correction is carried out according to a corresponding calculation method according to test results, such as no-load waveform correction, load loss resistance correction and temperature correction, the correction is currently carried out through manual project recording and then input into an excel calculation table of a PC (personal computer) for calculation, so that the operation efficiency is extremely low, problems such as recording errors, intentional modification, input errors, calculation errors and the like are easy to occur due to intervention of operating personnel, the reliability of the whole test result is further reduced, and finally issued reports are seriously disputed;
4. according to the requirements of relevant standards, energy efficiency items of high-energy-efficiency transformers need to be checked every time, and due to the fact that the number of the transformers is large, only a material warehouse has storage capacity, detection work can be carried out only in the material warehouse, detection efficiency must be improved to a certain degree, warehouse detection can be met, and the requirement cannot be met at present.
Therefore, the detection equipment has the characteristics of complete integration, convenient movement, complete test items, simple operation and the like, and the existing equipment cannot meet the test requirements.
Disclosure of Invention
The invention aims to provide a power transformer energy efficiency grade detection device which can integrally complete energy efficiency grade detection and is simple and convenient to use.
In order to achieve the purpose, the invention adopts the technical scheme that:
a power transformer energy efficiency grade detection device is used for carrying out energy efficiency grade detection on a power transformer to be detected, and comprises an IPC central control unit, a PLC electrical core controller, entity keys, a direct current resistance test unit, a no-load/load test unit, an output wiring switching unit and an output wiring interface; the IPC central control unit is in interactive communication with the PLC electrical core controller, the entity key, the no-load/load test unit and the output wiring switching unit are respectively connected with the PLC electrical core controller, the direct current resistance test unit and the no-load/load test unit are respectively connected with the output wiring switching unit, and the output wiring interface is connected with the output wiring switching unit;
the IPC central control unit is used for acquiring basic information of the power transformer, calculating a parameter value required by energy efficiency grade detection based on the basic information of the power transformer, receiving detection trigger information output by the entity key through the PLC electrical core controller and sending a corresponding detection instruction, providing a wiring guide diagram for detecting the energy efficiency grade, acquiring corresponding detection data through the direct current resistance testing unit and the no-load/load testing unit, correcting the detection data to obtain corrected data, judging the energy efficiency grade of the power transformer based on the corrected data, and generating a power transformer energy efficiency grade testing report;
the PLC electrical core controller is used for switching the direct current resistance testing unit and the no-load/load testing unit by controlling the output connection switching unit according to the detection instruction, controlling power supply and communication of the direct current resistance testing unit and the no-load/load testing unit according to the detection instruction, and controlling detection of the entity key;
the direct-current resistance testing unit is used for performing direct-current resistance testing on the power transformer;
the no-load/load test unit is used for performing no-load loss test and load loss test on the power transformer;
the output wiring switching unit is used for connecting the direct current resistance testing unit or the no-load/load testing unit into the output wiring interface;
the output wiring interface is used for connecting the power transformer.
The no-load/load test unit comprises a variable-frequency voltage-regulating electronic power supply, a capacitor compensation unit and a voltage-current power measurement unit; the variable-frequency voltage-regulating electronic power supply, the capacitor compensation unit and the voltage-current power measurement unit are all connected with the PLC electrical core controller, the variable-frequency voltage-regulating electronic power supply is connected with the IPC central control unit, and the variable-frequency voltage-regulating electronic power supply, the capacitor compensation unit and the voltage-current power measurement unit are all connected with the output wiring switching unit;
the frequency conversion voltage regulation electronic power supply is used for outputting a corresponding test power supply according to the parameter value required by the energy efficiency level detection calculated by the IPC central control unit;
the capacitor compensation unit is used for compensating the power transformer when a load loss test is carried out;
the voltage and current power measuring unit is used for obtaining the detection data when a no-load loss test and a load loss test are carried out.
The IPC central control unit is connected with a scanning gun for scanning the two-dimensional code or the bar code of the power transformer to obtain the basic information of the power transformer and/or an input module for manually inputting the basic information of the power transformer.
The IPC central control unit is connected with a temperature measuring sensor of the power transformer to obtain the temperature of the transformer.
The IPC central control unit is provided with a network interface with a network access function and is communicated with a system background or a server through the network interface.
The output wiring interface comprises a power contact for connecting the frequency conversion and voltage regulation electronic power supply with the low-voltage side or the high-voltage side of the power transformer and a compensation contact for connecting the capacitance compensator with the power transformer.
And the power supply contact and the compensation contact are both provided with switch auxiliary feedback nodes for feeding back the switching state of the power supply contact and the compensation contact, and the switch auxiliary feedback nodes are connected with the PLC.
The power transformer energy efficiency grade detection device further comprises a state indication module connected with the PLC electrical core controller.
The power transformer energy efficiency grade detection device further comprises an integrated movable case, a plurality of modularized combined type box bodies or an integrated container.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the invention, each test item of the energy efficiency grade detection is completed at one time through a single set of equipment, and the corresponding correction is carried out, so that the operation is simple and convenient, and the requirement of the energy efficiency grade detection of the power transformer is met.
Drawings
Fig. 1 is a block diagram of a power transformer energy efficiency level detection apparatus according to the present invention.
Fig. 2 is a schematic front view of a first external form of the power transformer energy efficiency grade detection device of the present invention.
Fig. 3 is a schematic top view of a first external form of the energy efficiency grade detection device of the power transformer of the present invention.
Fig. 4 is a schematic front view of a second external form of the power transformer energy efficiency grade detection device of the present invention.
Fig. 5 is a schematic top view of a second external form of the energy efficiency grade detection device of the power transformer of the present invention.
Fig. 6 is a schematic front view of a third external form of the energy efficiency grade detection device of the power transformer of the invention.
Fig. 7 is a rear view schematically illustrating a third external form of the apparatus for detecting energy efficiency level of a power transformer according to the present invention.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings to which the invention is attached.
The first embodiment is as follows: as shown in fig. 1, the power transformer energy efficiency grade detection device comprises an IPC central control unit, a PLC electrical core controller, an entity key, a direct current resistance test unit, a no-load/load test unit, an output connection switching unit and an output connection interface. The IPC central control unit is in interactive communication with the PLC electrical core controller, the entity key, the no-load/load test unit and the output wiring switching unit are respectively connected with the PLC electrical core controller, the direct current resistance test unit and the no-load/load test unit are respectively connected with the output wiring switching unit, and the output wiring interface is connected with the output wiring switching unit. The power transformer energy efficiency grade detection device also comprises a state indication module and an emergency stop button which are connected with the PLC.
The direct-current resistance testing unit is used for performing direct-current resistance testing on the power transformer. The no-load/load test unit is used for performing no-load loss test and load loss test on the power transformer. The no-load/load test unit comprises a variable frequency voltage regulating electronic power supply, a capacitor compensation unit and a voltage current power measurement unit (U, I, P measurement unit). The frequency conversion and voltage regulation electronic power supply, the capacitor compensation unit and the voltage and current power measurement unit are all connected with the PLC electrical core controller, the frequency conversion and voltage regulation electronic power supply is connected with the IPC central control unit, and the frequency conversion and voltage regulation electronic power supply, the capacitor compensation unit and the voltage and current power measurement unit are all connected with the output wiring switching unit. And the frequency-conversion voltage-regulation electronic power supply is used for outputting a corresponding test power supply according to the parameter values required by the energy efficiency level detection calculated by the IPC central control unit. The capacitor compensation unit is used for compensating the power transformer when a load loss test is carried out. The voltage and current power measuring unit is used for obtaining detection data when a no-load loss test and a load loss test are carried out. The output wiring switching unit is used for connecting the direct current resistance testing unit or the no-load/load testing unit into the output wiring interface. The output wiring interface is used for connecting the power transformer and comprises a power supply contact for connecting the variable-frequency voltage-regulating electronic power supply with the low-voltage side or the high-voltage side of the power transformer and a compensation contact for connecting the capacitor compensator with the power transformer.
The IPC central control unit can realize the following functions:
a) the IPC central control unit can be connected with a scanning gun for scanning the two-dimensional code or the bar code of the power transformer to obtain the basic information of the power transformer and/or an input module for manually inputting the basic information of the power transformer;
b) calculating parameter values required by energy efficiency grade detection based on basic information of the power transformer, wherein the parameter values comprise direct current resistance test current, no-load loss test voltage and load loss test voltage, current and compensation capacity;
c) the PLC electric core controller receives detection trigger information output by the entity key and sends a corresponding detection instruction, an operator triggers different detection items through the entity key, and the IPC central control unit receives the corresponding detection trigger information, gives corresponding test items and can give prompt information for completing the test;
d) aiming at each test item, providing a wiring guide diagram for energy efficiency grade detection through a configured display device, guiding a tester to perform wiring, and ensuring the correctness of test wiring;
e) obtaining corresponding detection data (test result) through the direct current resistance test unit and the no-load/load test unit;
f) correcting the detection data to obtain corrected data, and after finishing a direct current resistance test, a no-load loss test and a load loss test in sequence, the system automatically generates corrected data subjected to waveform correction, resistance correction and temperature correction according to the input transformer information, and simultaneously, an IPC central control unit is connected with a temperature sensor of the power transformer to read the temperature of the transformer measured by the configured temperature sensor, integrates the test result, the transformer information and the test temperature, and automatically generates a test result, a test result and a test result;
g) judging the energy efficiency grade of the power transformer based on the corrected data, namely automatically judging the energy efficiency grade of the tested power transformer according to the energy efficiency grade limit value given by GB20052-2020 power transformer energy efficiency limit value and energy efficiency grade, and combining the material option of whether an iron core in transformer information is an electrical steel strip or an amorphous alloy, and contrasting the test value;
h) and generating a power transformer energy efficiency grade test report, wherein the report comprises information such as test data before and after correction, the energy efficiency grade of the tested power transformer and the like, and particularly, the report format can be customized and modified according to different requirements to meet individual requirements.
In addition, the control unit in the IPC may further have the following functions:
i) the IPC central control unit is provided with a network interface with a network access function and is communicated with the system background or the server through the network interface, so that the IPC central control unit can send the unique identity serial number of the energy efficiency detection device, the information of the tested power transformer, the test process, the result, the report, the environmental information and other related quantities to the network background or the designated server without sensing.
The PLC electrical core controller can realize the following functions:
a) switching of the direct current resistance test unit and the no-load/load test unit is achieved by controlling the output connection switching unit according to the detection instruction, namely, switching of the corresponding electrical connection line is controlled during test item conversion, and the test connection line is switched to the direct current resistance test unit during direct current resistance test; during no-load loss testing, the output of the built-in variable-frequency voltage-regulating electronic power supply is switched to a low-voltage side test connecting line of the power transformer; when the load loss is tested, the output of the built-in variable-frequency voltage-regulating electronic power supply is switched to a high-voltage side test connecting wire of the power transformer, and corresponding compensation capacitors are switched according to the capacity of the tested power transformer. The switching of the electrical connection lines is simultaneously checked whether the switching is finished through the switch auxiliary feedback node, namely, the power supply contact and the compensation contact are both provided with the switch auxiliary feedback node for feeding back the switching state of the power supply contact and the compensation contact, and the switch auxiliary feedback node is connected with the PLC electrical core controller so as to finish the switching feedback.
b) According to the detection instruction of the IPC central control unit, the power supply and communication of the direct current resistance test unit and the no-load/load test unit are controlled, so that when the test function is not executed, the test module is not powered on, the mutual interference among the test units is reduced, and the power consumption of the energy efficiency detection device is also reduced;
c) and the detection of the control entity key comprises control entity key detection, emergency stop key detection, state indication module detection and the like.
The power transformer energy efficiency grade detection device is mainly based on two modules, namely a direct current resistance test unit and a no-load/load test unit, the two modules are electrically switched in and out through a PLC (programmable logic controller), the functions of test items are realized by only using a group of external test lines, the direct current resistance test, the no-load loss and the load loss test can be completed, one-time wiring is met, and the requirements of a plurality of test items are completed. The central control unit adopts an IPC central control unit with a touch display screen, and has convenient operation and strong expansibility.
According to the standard requirements of the guide rules of the test, the step of utilizing the power transformer energy efficiency grade detection device to detect the energy efficiency grade of the power transformer to be detected comprises direct current resistance test, no-load test and load test, and during the test, 1) an IPC central control unit records the related basic information of the power transformer to be detected through a code scanning gun or manual input; 2) the IPC central control unit automatically calculates direct current resistance test current, no-load test voltage, load test voltage current and supplementary capacity according to the basic information of the tested power transformer; 3) the IPC central control unit receives the input of the direct current resistance test key and prompts a direct current resistance test wiring guide diagram; 4) when the wiring is finished and the wiring is correct, starting to perform direct-current resistance test through the direct-current resistance test unit, wherein the direct-current resistance test unit automatically tests and records the line resistance and the phase resistance of the tested power transformer; 5) finishing direct current resistance test, automatically recording a test result by an IPC central control unit, receiving no-load test key input and prompting a no-load test wiring guide diagram; 6) after wiring is completed and wiring is confirmed to be correct, no-load test is carried out through the no-load/load test unit, the voltage is automatically boosted to test voltage, and the effective value of the tested voltage, the average value of the voltage, the effective value of current, active power, apparent power, voltage frequency and the like are recorded; 7) completing no-load test, and correcting the test result and recording the test result by the IPC central control unit; 8) the IPC central control unit receives the input of a load test key and prompts a load test wiring guide diagram; 9) automatically switching corresponding compensation capacitors, boosting the voltage and increasing the current to a test current (not less than 50% of rated current), recording test data (voltage effective value, voltage average value, current effective value, active power, apparent power, voltage frequency and the like), and then quickly reducing the voltage, thereby preventing test errors caused by the rise of the temperature of the transformer due to overlong pressurization time; 10) completing no-load test, reading the temperature sensor measurement value of the temperature of the test transformer by the IPC central control unit, correcting the temperature of the test result and recording the test result; 11) comparing a given idle load loss limit value of GB20052-2020 power transformer energy efficiency limit value and energy efficiency grade, automatically judging the energy efficiency grade of the power transformer, and recording the energy efficiency grade in a detection report; 12) according to a defined network interface, relevant quantities such as the serial number of the energy efficiency detection device, information of a tested transformer, a test process, a result, a report, environmental information and the like are sent to a network background or a designated server in an noninductive manner; 13) and finishing the test, and waiting for the start of the test of the next transformer.
The energy efficiency grade detection device for the power transformer further comprises an integrated mobile case, a plurality of modularized combined type box bodies or an integrated container, and the energy efficiency grade detection device is specifically as follows:
a) for testing a small-capacity transformer (not more than 630kVA/10kV distribution transformer), each functional module is arranged in an integrated mobile case, the volume and the weight of the integrated mobile case meet the portable requirement, the integrated mobile case is easy to use in a field or a transformer storage warehouse, the structural form is shown in figures 2 and 3, wheels are arranged at the bottom of the integrated mobile case, an operation panel is formed on the top surface of the integrated mobile case, and a touch display screen, entity keys and the like are arranged;
b) to being used for testing medium capacity transformer (be not more than 1250kVA/10kV distribution transformer), adopt a plurality of (if two) modularization combination formula boxes, different functional module distributes in the modularization combination formula box of difference, and can realize the butt joint stack through corresponding docking mechanism between the modularization combination formula box, the modularization combination formula box of bottom can install the wheel, and the modularization combination formula box top surface at top sets up the operating panel who has touch display screen, entity button etc.. The modular combined type box bodies are independent modules during transportation, the modular combined type box bodies are overlapped into an integrated testing device during testing, the two modular combined type box bodies are connected by cables in a necessary mode, the volume and the weight of a single module meet the portable requirement, the modular combined type box bodies are easy to use in the field or a transformer storage warehouse, and the structural form is shown in attached figures 4 and 5;
c) for testing power transformers (more than 1250kVA/10kV distribution transformers and power transformers) with more than medium capacity, an integrated container structure is adopted, integral hoisting and transportation are carried out, only a power supply and an output connecting wire need to be connected during testing, a test project can be completed, the integrated container structure is easy to use on site or in a transformer storage warehouse, the structural form is shown in the attached drawings 6 and 7, and an operation panel is arranged on the front surface of the integrated container structure.
Based on the test requirements of two related standards, the invention realizes that a single set of equipment completes three test items of energy efficiency grade detection and corresponding correction at one time, automatically issues a test report and grade evaluation, and sends test data and results to a network platform or a server in real time to meet the technical requirements of the energy efficiency grade detection of the power transformer, and has the following beneficial effects:
1) the method is portable: the modularized, lightweight and integrated wheel type structure is convenient to move (a small-capacity detection platform), and is convenient for warehouse and field detection;
2) and (3) accuracy: the energy efficiency project is detected completely, the detection process and the precision meet the requirements of national standard and industry standard (the measurement precision is 0.1 grade of voltage and current and 0.2 grade of power)
3) The method is simple and convenient: one-key operation, automatic test, report generation and data remote transmission. In particular, no professional is needed, and the operation can be realized by simple training;
4) and (3) fast: fast reverse wiring prevention and programmed flow control are realized, and the detection of a single unit is not more than 15 minutes;
5) reliable: capacity margin, long-term work, and convenient transportation due to the adoption of a shockproof structure.
The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention by this means. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (9)
1. The utility model provides a power transformer efficiency grade detection device for treat the power transformer who detects and carry out efficiency grade detection, its characterized in that: the power transformer energy efficiency grade detection device comprises an IPC central control unit, a PLC electrical core controller, an entity key, a direct current resistance test unit, a no-load/load test unit, an output wiring switching unit and an output wiring interface; the IPC central control unit is in interactive communication with the PLC electrical core controller, the entity key, the no-load/load test unit and the output wiring switching unit are respectively connected with the PLC electrical core controller, the direct current resistance test unit and the no-load/load test unit are respectively connected with the output wiring switching unit, and the output wiring interface is connected with the output wiring switching unit;
the IPC central control unit is used for acquiring basic information of the power transformer, calculating a parameter value required by energy efficiency grade detection based on the basic information of the power transformer, receiving detection trigger information output by the entity key through the PLC electrical core controller and sending a corresponding detection instruction, providing a wiring guide diagram for detecting the energy efficiency grade, acquiring corresponding detection data through the direct current resistance testing unit and the no-load/load testing unit, correcting the detection data to obtain corrected data, judging the energy efficiency grade of the power transformer based on the corrected data, and generating a power transformer energy efficiency grade testing report;
the PLC electrical core controller is used for switching the direct current resistance testing unit and the no-load/load testing unit by controlling the output connection switching unit according to the detection instruction, controlling power supply and communication of the direct current resistance testing unit and the no-load/load testing unit according to the detection instruction, and controlling detection of the entity key;
the direct-current resistance testing unit is used for performing direct-current resistance testing on the power transformer;
the no-load/load test unit is used for performing no-load loss test and load loss test on the power transformer;
the output wiring switching unit is used for connecting the direct current resistance testing unit or the no-load/load testing unit into the output wiring interface;
the output wiring interface is used for connecting the power transformer.
2. The power transformer energy efficiency level detection device according to claim 1, characterized in that: the no-load/load test unit comprises a variable frequency voltage-regulating electronic power supply, a capacitor compensation unit and a voltage-current power measurement unit; the variable-frequency voltage-regulating electronic power supply, the capacitor compensation unit and the voltage-current power measurement unit are all connected with the PLC electrical core controller, the variable-frequency voltage-regulating electronic power supply is connected with the IPC central control unit, and the variable-frequency voltage-regulating electronic power supply, the capacitor compensation unit and the voltage-current power measurement unit are all connected with the output wiring switching unit;
the frequency conversion voltage regulation electronic power supply is used for outputting a corresponding test power supply according to the parameter value required by the energy efficiency level detection calculated by the IPC central control unit;
the capacitor compensation unit is used for compensating the power transformer when a load loss test is carried out;
the voltage and current power measuring unit is used for obtaining the detection data when a no-load loss test and a load loss test are carried out.
3. The power transformer energy efficiency level detection device according to claim 1, characterized in that: the IPC central control unit is connected with a scanning gun for scanning the two-dimensional code or the bar code of the power transformer to obtain the basic information of the power transformer and/or an input module for manually inputting the basic information of the power transformer.
4. The power transformer energy efficiency level detection device according to claim 1, characterized in that: the IPC central control unit is connected with a temperature measuring sensor of the power transformer to obtain the temperature of the transformer.
5. The power transformer energy efficiency level detection device according to claim 1, characterized in that: the IPC central control unit is provided with a network interface with a network access function and is communicated with a system background or a server through the network interface.
6. The power transformer energy efficiency level detection device according to claim 2, wherein: the output wiring interface comprises a power contact for connecting the frequency conversion and voltage regulation electronic power supply with the low-voltage side or the high-voltage side of the power transformer and a compensation contact for connecting the capacitance compensator with the power transformer.
7. The power transformer energy efficiency level detection device according to claim 6, wherein: and the power supply contact and the compensation contact are both provided with switch auxiliary feedback nodes for feeding back the switching state of the power supply contact and the compensation contact, and the switch auxiliary feedback nodes are connected with the PLC.
8. The power transformer energy efficiency level detection device according to claim 1, characterized in that: the power transformer energy efficiency grade detection device further comprises a state indication module connected with the PLC electrical core controller.
9. The power transformer energy efficiency level detection device according to claim 1, characterized in that: the power transformer energy efficiency grade detection device further comprises an integrated movable case, a plurality of modularized combined type box bodies or an integrated container.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210070122.2A CN114527341A (en) | 2022-01-21 | 2022-01-21 | Power transformer efficiency grade detection device |
| PCT/CN2022/113368 WO2023138045A1 (en) | 2022-01-21 | 2022-08-18 | Energy efficiency index detection apparatus for power transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210070122.2A CN114527341A (en) | 2022-01-21 | 2022-01-21 | Power transformer efficiency grade detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114814438A (en) * | 2022-05-25 | 2022-07-29 | 国网湖北省电力有限公司鄂州供电公司 | Intelligent detection method for energy efficiency of distribution transformer |
| CN114924153A (en) * | 2022-05-30 | 2022-08-19 | 国网湖北省电力有限公司鄂州供电公司 | Intelligent energy efficiency judgment system and method for power transformer |
| WO2023138045A1 (en) * | 2022-01-21 | 2023-07-27 | 苏州华电电气股份有限公司 | Energy efficiency index detection apparatus for power transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117420489A (en) * | 2023-12-18 | 2024-01-19 | 山东泰开检测有限公司 | Mutual inductor type evaluation test device based on Internet of things and application method |
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| US4795969A (en) * | 1987-12-11 | 1989-01-03 | Canadian Patents And Development Limited | Load loss standard for testing and calibrating high voltage power measuring systems |
| CN103196491B (en) * | 2013-03-22 | 2015-09-23 | 广州供电局有限公司 | Transformer integral comprehensive detection device |
| CN108535580A (en) * | 2018-07-02 | 2018-09-14 | 江苏高电电力设备有限公司 | Transformer synthesis tests system |
| CN109188071A (en) * | 2018-10-22 | 2019-01-11 | 国网电力科学研究院武汉南瑞有限责任公司 | Vehicular power transformer sky, load loss on-site test system and method |
| CN111458584A (en) * | 2020-04-16 | 2020-07-28 | 广东电网有限责任公司 | Automatic energy efficiency test platform and test method for power electronic equipment |
| CN214201623U (en) * | 2020-12-28 | 2021-09-14 | 国网湖北省电力有限公司电力科学研究院 | Comprehensive energy efficiency test platform |
| CN113447856A (en) * | 2021-06-25 | 2021-09-28 | 国网新疆电力有限公司电力科学研究院 | Automatic quality inspection testing device and method for transformer |
| CN114527341A (en) * | 2022-01-21 | 2022-05-24 | 苏州华电电气股份有限公司 | Power transformer efficiency grade detection device |
-
2022
- 2022-01-21 CN CN202210070122.2A patent/CN114527341A/en active Pending
- 2022-08-18 WO PCT/CN2022/113368 patent/WO2023138045A1/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023138045A1 (en) * | 2022-01-21 | 2023-07-27 | 苏州华电电气股份有限公司 | Energy efficiency index detection apparatus for power transformer |
| CN114814438A (en) * | 2022-05-25 | 2022-07-29 | 国网湖北省电力有限公司鄂州供电公司 | Intelligent detection method for energy efficiency of distribution transformer |
| CN114924153A (en) * | 2022-05-30 | 2022-08-19 | 国网湖北省电力有限公司鄂州供电公司 | Intelligent energy efficiency judgment system and method for power transformer |
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| Publication number | Publication date |
|---|---|
| WO2023138045A1 (en) | 2023-07-27 |
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