Mobile integrated detection method for power distribution and transformation switch and mutual inductor

Abstract

The invention relates to a mobile integrated detection method for a power distribution and transformation switch and a mutual inductor. The method comprises the following steps: determining detection items of the power distribution and transformation switch and the mutual inductor; dividing all the detection items into a plurality of detection categories based on detection contents; respectively constructing corresponding detection system modules according to different detection categories so as to execute respective detection items; an intelligent control module is built to generate a detection task according to user instructions, experiment information related to the detection task is sent to the corresponding detection system module, and then the detection system module is controlled to complete the detection task. According to the invention, automatic integrated detection of the distribution transformer, the high-low voltage switch and the mutual inductor can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent power distribution equipment detection, and in particular to a mobile integrated detection method for power distribution and transformation switches and transformers. Background Art

[0002] Distribution transformers, high and low voltage switches, and mutual inductors are important equipment in the distribution network. The quality of their materials directly determines the stability of the grid voltage and the safety of operation. The quality inspection of distribution transformers, high and low voltage switches, and mutual inductors is particularly important for power grid companies. Traditional distribution transformer, high and low voltage switch, and mutual inductor inspection are carried out in a laboratory environment. They are carried out separately according to different tests of the equipment. The inspection items are numerous and single, and the test instruments and equipment are scattered. During the inspection process, multiple wiring and disconnection are required according to different test items, and the inspection efficiency is low. At the same time, the test and inspection process requires manual entry of equipment information and test results, and the level of intelligence is not high.

[0003] There is a need for a detection method based on batch integration of test items for distribution transformers, high and low voltage switches, and transformers, which can realize automatic detection and automatic identification of multiple test functions. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a method for realizing automatic integrated detection of distribution transformers, high and low voltage switches, and mutual inductors.

[0005] The technical solution adopted by the present invention to solve the technical problem is: to provide a mobile integrated detection method for distribution and transformation switches and transformers, comprising the following steps:

[0006] Determine the inspection items for distribution and transformation switches and transformers;

[0007] Dividing all the detection items into multiple detection categories based on the detection content;

[0008] Constructing corresponding detection system modules for different detection categories to execute the respective detection items;

[0009] An intelligent control module is built to generate detection tasks, and the experimental information related to the detection tasks is sent to the corresponding detection system modules, thereby controlling each detection system module to complete the detection tasks.

[0010] Further, generating a detection task according to a user instruction and sending experimental information related to the detection task to a corresponding detection system module includes:

[0011] Get the device information under test;

[0012] Determine the detection items to be executed and their execution order according to the device under test information, and then generate the detection task, and generate a wiring diagram to guide the user to connect the device under test to the corresponding detection system module;

[0013] Detect whether the device under test is correctly connected. If it is correctly connected, send the experimental information related to the detection task to the corresponding detection system module; otherwise, return to the step of obtaining the device under test information.

[0014] Furthermore, the intelligent control module is also used to analyze the detection results to generate a test report and generate user prompt information for performing a discharge operation on the device under test.

[0015] Furthermore, the detection categories include insulation characteristics, transformer characteristics and switch characteristics, and the detection system modules include insulation characteristics module, transformer characteristics module and switch characteristics module.

[0016] Furthermore, the detection items for the distribution transformer include:

[0017] Measurement of DC insulation resistance between winding and ground and between windings;

[0018] Absorption ratio measurement;

[0019] Winding resistance measurement;

[0020] Voltage ratio measurement and connection group number verification;

[0021] No-load loss and no-load current measurement;

[0022] Short circuit impedance and load loss measurements;

[0023] Externally applied pressure test;

[0024] Induction withstand voltage test;

[0025] No-load losses and no-load current measurements at 90% and 110% rated voltage.

[0026] Furthermore, the detection items for the high voltage switch include:

[0027] Power frequency withstand voltage test;

[0028] Main circuit resistance measurement;

[0029] Insulation test of auxiliary and control circuits;

[0030] Mechanical operation and mechanical properties tests.

[0031] Furthermore, the detection items for the low-voltage switch include:

[0032] Electric shock protection and protection circuit integrity testing;

[0033] Dielectric properties testing;

[0034] Mechanical operation test;

[0035] Power-on operation test.

[0036] Furthermore, the detection items for the mutual inductor include:

[0037] Primary end power frequency withstand voltage test;

[0038] Inter-section power frequency withstand voltage test;

[0039] Secondary end power frequency withstand voltage test;

[0040] Turn-to-turn overvoltage test.

[0041] Beneficial Effects

[0042] Due to the adoption of the above-mentioned technical scheme, the present invention has the following advantages and positive effects compared with the prior art: the present invention classifies various detection items of distribution and transformation devices, and builds a detection system architecture including an intelligent control module and multiple detection system modules. The intelligent control module determines the detection items to be executed and the execution order according to the equipment to be tested, and generates a wiring diagram to guide the user to correctly connect the wires, and then sends the relevant experimental information of the detection task to the corresponding detection system module, controls the detection system module to execute the detection items in sequence, realizes the integrated detection function of distribution transformers, high and low voltage switches, and mutual inductors, and greatly improves the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a system flow chart of an embodiment of the present invention;

[0044] Figure 2 is a schematic diagram of the system architecture of an embodiment of the present invention;

[0045] Figure 3 It is a schematic diagram of the working process of the intelligent control module according to the embodiment of the present invention. DETAILED DESCRIPTION

[0046] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0047] The embodiment of the present invention relates to a mobile integrated detection method for distribution and transformation switches and transformers, such as Figure 1As shown, the following steps are included:

[0048] Determine the inspection items for distribution and transformation switches and transformers;

[0049] Divide all test items into multiple test categories based on the test content;

[0050] Build corresponding detection system modules for different detection categories to perform their respective detection projects;

[0051] An intelligent control module is built to generate detection tasks, and the experimental information related to the detection tasks is sent to the corresponding detection system modules, thereby controlling each detection system module to complete the detection tasks.

[0052] Among them, the inspection items for distribution transformers include:

[0053] 1) Measurement of DC insulation resistance between winding and ground and between windings;

[0054] 2) Absorption ratio measurement;

[0055] 3) Winding resistance measurement;

[0056] 4) Voltage ratio measurement and connection group number verification;

[0057] 5) No-load loss and no-load current measurement;

[0058] 6) Short-circuit impedance and load loss measurement;

[0059] 7) Externally applied pressure test;

[0060] 8) Induction withstand voltage test;

[0061] 9) No-load loss and no-load current measurements at 90% and 110% rated voltage.

[0062] The test items for high voltage switches include:

[0063] 1) Power frequency withstand voltage test;

[0064] 2) Main circuit resistance measurement;

[0065] 3) Insulation test of auxiliary and control circuits;

[0066] 4) Mechanical operation and mechanical properties test.

[0067] The test items for low voltage switches include:

[0068] 1) Electric shock protection and protection circuit integrity detection;

[0069] 2) Dielectric properties testing;

[0070] 3) Mechanical operation test;

[0071] 4) Power-on operation test.

[0072] The test items for transformers include:

[0073] 1) Primary end power frequency withstand voltage test;

[0074] 2) Inter-section power frequency withstand voltage test;

[0075] 3) Secondary end power frequency withstand voltage test;

[0076] 4) Turn-to-turn overvoltage test.

[0077] like Figure 2 As shown, the test power supply module is connected to the 220V power supply system and is connected to the other modules; the intelligent control module is connected to the other modules to ensure the normal operation of each module and device; according to different test items, the distribution transformer, high and low voltage switches, and transformer test products are connected to the transformer characteristic module, switch characteristic module, and insulation characteristic module; the intelligent control module sends the detection task, transmits the test information to each system module, and automatically performs the test.

[0078] The specific test process includes:

[0079] 1) The inspector shall accurately connect the wires according to the wiring diagram displayed by the prompt system of the intelligent control module and confirm that the wiring is completed;

[0080] 2) The tester confirms the one-button start measurement on the intelligent control module;

[0081] 3) Automatic testing of the detection and test system;

[0082] 4) After completing the first test, the system automatically switches lines and then continues to automatically perform the next test until all tests are completed;

[0083] 5) The intelligent control module prompts that the test is completed, analyzes the test data, automatically generates a test report, and prompts the tester to perform the test product discharge operation.

[0084] During the test, the workflow of the intelligent control module is as follows: Figure 3 As shown, the following steps are included:

[0085] S0 obtains the information of the device under test;

[0086] S1 determines the test items to be performed and their execution order;

[0087] S2 generates a wiring diagram to guide the connection of the device under test;

[0088] S3 verifies whether the wiring is correct, if it is correct, sends the relevant experimental information to the corresponding detection system module, otherwise returns to step S0;

[0089] S4 controls each detection system module to complete all detection items in sequence;

[0090] S5 analyzes the test results, generates a test report, and generates user prompt information for performing a discharge operation on the device under test.

Claims

1. A mobile integrated detection method for distribution and transformation switches and transformers, characterized in that: The following steps are involved: Determine the inspection items for distribution and transformation switches and transformers; Dividing all the detection items into multiple detection categories based on the detection content; Constructing corresponding detection system modules for different detection categories to execute the respective detection items; An intelligent control module is built to generate detection tasks, and the experimental information related to the detection tasks is sent to the corresponding detection system modules, thereby controlling each detection system module to complete the detection tasks.

2. The method according to claim 1, characterized in that Generating a detection task according to a user instruction and sending experimental information related to the detection task to a corresponding detection system module includes: Get the device information under test; The detection items to be executed and their execution order are determined according to the information of the device under test, and then the detection task is generated. At the same time, a wiring diagram is generated to guide the user to connect the device under test to the corresponding detection system module; whether the device under test is correctly connected is detected, and if it is correctly connected, the experimental information related to the detection task is sent to the corresponding detection system module, otherwise, return to the step of obtaining the information of the device under test.

3. The method according to claim 2, characterized in that The intelligent control module is also used to analyze the test results to generate a test report and generate user prompt information for performing a discharge operation on the device under test.

4. The method according to claim 1, characterized in that: The detection categories include insulation characteristics, transformer characteristics and switch characteristics, and the detection system modules include insulation characteristics module, transformer characteristics module and switch characteristics module.

5. The method according to claim 1, characterized in that The test items for distribution transformers include: Measurement of DC insulation resistance between winding and ground and between windings; Absorption ratio measurement; Winding resistance measurement; Voltage ratio measurement and connection group number verification; No-load loss and no-load current measurement; Short circuit impedance and load loss measurements; Externally applied pressure test; Induction withstand voltage test; No-load losses and no-load current measurements at 90% and 110% rated voltage.

6. The method according to claim 1, characterized in that The test items for high voltage switches include: Power frequency withstand voltage test; Main circuit resistance measurement; Insulation test of auxiliary and control circuits; Mechanical operation and mechanical properties tests.

7. The method according to claim 1, characterized in that The test items for low-voltage switches include: electric shock protection and protection circuit integrity testing; Dielectric properties testing; Mechanical operation test; Power-on operation test.

8. The method according to claim 1, characterized in that: The test items for the transformer include: Primary end power frequency withstand voltage test; Inter-section power frequency withstand voltage test; Secondary end power frequency withstand voltage test; Turn-to-turn overvoltage test.

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