CN219799644U - Digital direct-current withstand voltage and leakage testing equipment for hydraulic generator - Google Patents
Digital direct-current withstand voltage and leakage testing equipment for hydraulic generator Download PDFInfo
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Abstract
The utility model relates to digital direct-current withstand voltage and leakage test equipment for a hydraulic generator, and belongs to the technical field of hydraulic generator insulation test. The system comprises a boost control box, a high-voltage generator system, a high-voltage microampere current testing system, a direct-current high-voltage measuring system, an on-site control computer and an application terminal; the testing equipment can realize the insulation direct current withstand voltage and leakage test of the automatic hydraulic generator, and ensure the consistency of the boosting process, thereby improving the accuracy of the leakage current of the test result, improving the test efficiency and being easy to popularize and apply.
Description
Technical Field
The utility model belongs to the technical field of insulation test of hydraulic generators, and particularly relates to digital direct-current withstand voltage and leakage test equipment for a hydraulic generator.
Background
At present, for the insulation direct current withstand voltage and leakage test of the hydraulic generator, the direct current high voltage generator is used for manually pressurizing in stages, the high voltage microammeter is used for measuring leakage current, and the voltage and current are read in stages and recorded for standard comparison and judgment. Because of the large number of winding bars of the hydraulic generator, the large-capacity generator usually exceeds 1000 bars, the capacitance of the insulation system is larger than 3 mu F, and the test time is longer than 2 hours. The consistency of the boosting process is difficult to ensure in the long-time continuous manual operation boosting, so that the accuracy of the leakage current of the test result is low and the test efficiency is low. Along with the development of industrial automation, digitization and intellectualization, the existing test equipment needs to be transformed in a digitization and internet of things mode, and the intelligent maintenance requirement is met. Therefore, how to overcome the defects of the prior art is a problem to be solved in the technical field of the insulation test of the hydraulic generator at present.
Disclosure of Invention
The utility model aims to solve the defects of the prior art and provides digital direct-current withstand voltage and leakage testing equipment for a hydraulic generator.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a digital dc withstand voltage and leakage testing apparatus for a hydro-generator, comprising: the system comprises a boost control box, a high-voltage generator system, a high-voltage microampere current testing system, a direct-current high-voltage measuring system, an on-site control computer and an application terminal;
the high-voltage microampere current testing system adopts an optical fiber high-voltage microampere meter; the plugging interface of the optical fiber high-voltage microammeter is connected with the tested hydraulic generator; the optical fiber high-voltage microammeter is also connected with the boost control box;
the high-voltage generator system comprises a high-voltage generator and a high-voltage current-limiting resistor;
the high-voltage generator is connected with the boost control box through a boost control plug interface of the high-voltage generator;
the high-voltage generator is connected with one end of the high-voltage current-limiting resistor through a screw hole interface;
the high-voltage current-limiting resistor is connected with the optical fiber high-voltage microammeter through a three-way connector;
the third joint of the three-way joint is connected with a voltage measurement plug interface of the direct-current high-voltage measurement system; the direct-current high-voltage measurement system is also connected with the boost control box;
the boost control box is also connected with the local control computer;
the application terminal is connected with the local control computer through a remote server.
Further, preferably, the boost control box comprises a boost control box input/output module, a boost control box display screen module, a boost control box indicator light module and a boost control box control module;
the boost control box input/output module comprises a boost control interface, a voltage measurement input interface, a current measurement input optical fiber interface and an upper computer communication control interface;
the boost control interface is connected with a boost control plug interface of the high-voltage generator;
the voltage measurement input interface is connected with a voltage measurement output plug interface of the direct-current high-voltage measurement system;
the current measurement input optical fiber interface is connected with the optical fiber high-voltage microammeter;
the upper computer communication control interface is connected with an upper computer data interface of the local control computer.
Further, it is preferable that the application terminals include a mobile phone application terminal and a portable computer application terminal.
Further, preferably, the local control computer comprises a boost control parameter setting module, a test display module, a test analysis module and a control button;
the test display module comprises a test voltage display unit, a test current display unit, a test result table display unit, a test state progress display unit and a test result voltage current curve display unit.
Further, it is preferable that the boost control box display screen module includes a leakage current display unit, an overcurrent setting unit, a timing setting unit, an output voltage display unit, an overvoltage protection setting unit;
the boost control box indicator lamp module comprises a high-voltage on-off indicator lamp and a power indicator lamp;
the control module of the boost control box comprises a power switch, a high-voltage switch, a manual and automatic control mode switching button, a timing start-stop button, a boost control fine adjustment knob and a boost control coarse adjustment knob.
In the utility model, the high-voltage current-limiting resistor protects the test equipment from being damaged, preferably, the two ends of the high-voltage current-limiting resistor are protruded by 1cm long screw rods, and the high-voltage generator connection screw holes and the three-way joint screw holes at the two ends are screwed in during installation to finish connection.
In the utility model, the optical fiber high-voltage microampere meter is used for measuring high-voltage microampere current, so that a measurement signal can be transmitted to a local control computer to participate in control and sampling input, and the transmission process is not interfered, therefore, optical fiber transmission is preferably adopted, namely the high-voltage microampere current and the boost control box transmit data through the optical fiber, and more preferably, the high-voltage microampere current and the boost control box are connected through a plug-in interface and the optical fiber, namely the plug-in connection is realized.
In the utility model, a current measurement input optical fiber interface is used for collecting the measurement result of an optical fiber high-voltage microammeter, namely, sampling and inputting high-voltage leakage current.
In the utility model, in order to ensure accurate test voltage, a set of direct current high-voltage measurement system is independently established, the measuring point is arranged between the high-voltage microammeter and the high-voltage current-limiting resistor and is connected through the three-way connector, and the test voltage signal is output to the boost control box through the bottom voltage measurement output plug interface.
In the utility model, the local control computer is connected with the boost control box through the COM data interface and the data line to realize communication control. Preferably, the remote server and the local control computer realize data interaction through the Internet.
Compared with the prior art, the utility model has the beneficial effects that:
the test equipment has novel structure and convenient use; the test equipment of the utility model is adopted to carry out direct current high voltage output, can realize insulation direct current withstand voltage and leakage test of the automatic hydraulic generator, and ensures consistency of the boosting process, thereby improving accuracy of leakage current of test results and improving test efficiency.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of a digital DC withstand voltage and leakage testing apparatus for a hydro-generator according to the present utility model;
FIG. 2 is a schematic diagram of the input/output module of the boost control box;
FIG. 3 is a schematic diagram of a boost control tank;
FIG. 4 is a schematic diagram of the structure of the local control computer;
1, a boost control box; 2. a high voltage generator; 3. an optical fiber high-voltage microammeter; 4. a high voltage current limiting resistor; 5. a direct current high voltage measurement system; 6. an in-situ control computer; 7. a remote server; 8. a mobile phone application terminal; 9. a portable computer application terminal; 10. a plug interface; 11. a three-way joint; 12. a screw hole interface; 13. a voltage measurement plug interface; 14. a voltage measurement output plug interface; 15. boost control plug interface; 16. the boost control box input/output module; 17. an upper computer data interface; 18. a boost control interface; 19. a voltage measurement input interface; 20. a current measurement input optical fiber interface; 21. the upper computer communication control interface; 22. the boost control box display screen module; 23. the boost control box indicator light module; 24. the boost control box control module; 25. a leakage current display unit; 26. an overcurrent setting unit; 27. a timing setting unit; 28. an output voltage display unit; 29. an overvoltage protection setting unit; 30. high-voltage on-off indicator lamp; 31. a power indicator light; 32. a power switch; 33. a high voltage switch; 34. a manual automatic control mode switching button; 35. a timing start-stop button; 36. a boost control fine tuning knob; 37. a boost control coarse adjustment knob; 38. a boost control parameter setting module; 39. a test voltage display unit; 40. a test current display unit; 41. a test result table display unit; 42. a test state progress display unit; 43. a control button; 44. and a test result voltage-current curve display unit.
Detailed Description
The present utility model will be described in further detail with reference to examples.
It will be appreciated by those skilled in the art that the following examples are illustrative of the present utility model and should not be construed as limiting the scope of the utility model. The specific techniques, connections, or conditions are not identified in the examples and are set forth in accordance with the techniques, connections, conditions, or in accordance with the product specifications described in the literature in this field. The materials, instruments or equipment used are conventional products available from commercial sources, not identified to the manufacturer.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, "connected" as used herein may include wireless connections. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. The orientation or state relationship indicated by the terms "inner", "upper", "lower", etc. are orientation or state relationship based on the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the utility model.
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "provided" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model is understood by those of ordinary skill in the art according to the specific circumstances.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Example 1
As shown in fig. 1 to 4, a digital direct current withstand voltage and leakage test apparatus for a hydro-generator includes: the system comprises a boost control box 1, a high-voltage generator system, a high-voltage microampere current testing system, a direct-current high-voltage measuring system 5, an on-site control computer 6 and an application terminal;
the high-voltage microampere current testing system adopts an optical fiber high-voltage microampere meter 3; the plugging interface 10 of the optical fiber high-voltage microammeter 3 is connected with a tested hydraulic generator; the optical fiber high-voltage microammeter 3 is also connected with the boost control box 1;
the high-voltage generator system comprises a high-voltage generator 2 and a high-voltage current-limiting resistor 4;
the high-voltage generator 2 is connected with the boost control box 1 through a boost control plug interface 15 thereof;
the high-voltage generator 2 is connected with one end of the high-voltage current-limiting resistor 4 through a screw hole interface 12;
the high-voltage current-limiting resistor 4 is connected with the optical fiber high-voltage microammeter 3 through a three-way joint 11;
the third joint of the three-way joint 11 is connected with a voltage measurement plug interface 13 of the direct-current high-voltage measurement system 5; the direct-current high-voltage measurement system 5 is also connected with the boost control box 1;
the boost control box 1 is also connected with a local control computer 6;
the application terminal is connected to the local control computer 6 via a remote server 7.
Example 2
As shown in fig. 1 to 4, a digital direct current withstand voltage and leakage test apparatus for a hydro-generator includes: the system comprises a boost control box 1, a high-voltage generator system, a high-voltage microampere current testing system, a direct-current high-voltage measuring system 5, an on-site control computer 6 and an application terminal;
the high-voltage microampere current testing system adopts an optical fiber high-voltage microampere meter 3; the plugging interface 10 of the optical fiber high-voltage microammeter 3 is connected with a tested hydraulic generator; the optical fiber high-voltage microammeter 3 is also connected with the boost control box 1;
the high-voltage generator system comprises a high-voltage generator 2 and a high-voltage current-limiting resistor 4;
the high-voltage generator 2 is connected with the boost control box 1 through a boost control plug interface 15 thereof;
the high-voltage generator 2 is connected with one end of the high-voltage current-limiting resistor 4 through a screw hole interface 12;
the high-voltage current-limiting resistor 4 is connected with the optical fiber high-voltage microammeter 3 through a three-way joint 11;
the third joint of the three-way joint 11 is connected with a voltage measurement plug interface 13 of the direct-current high-voltage measurement system 5; the direct-current high-voltage measurement system 5 is also connected with the boost control box 1;
the boost control box 1 is also connected with a local control computer 6;
the application terminal is connected to the local control computer 6 via a remote server 7.
The boost control box 1 comprises a boost control box input/output module 16, a boost control box display screen module 22, a boost control box indicator light module 23 and a boost control box control module 24;
the boost control box input/output module 16 comprises a boost control interface 18, a voltage measurement input interface 19, a current measurement input optical fiber interface 20 and an upper computer communication control interface 21;
the boost control interface 18 is connected with the boost control plug interface 15 of the high-voltage generator 2;
the voltage measurement input interface 19 is connected with the voltage measurement output plug interface 14 of the direct-current high-voltage measurement system 5;
the current measurement input optical fiber interface 20 is connected with the optical fiber high-voltage microammeter 3;
the upper computer communication control interface 21 is connected with the upper computer data interface 17 of the local control computer 6.
The application terminals include a mobile phone application terminal 8 and a portable computer application terminal 9.
Example 3
As shown in fig. 1 to 4, a digital direct current withstand voltage and leakage test apparatus for a hydro-generator includes: the system comprises a boost control box 1, a high-voltage generator system, a high-voltage microampere current testing system, a direct-current high-voltage measuring system 5, an on-site control computer 6 and an application terminal;
the high-voltage microampere current testing system adopts an optical fiber high-voltage microampere meter 3; the plugging interface 10 of the optical fiber high-voltage microammeter 3 is connected with a tested hydraulic generator; the optical fiber high-voltage microammeter 3 is also connected with the boost control box 1;
the high-voltage generator system comprises a high-voltage generator 2 and a high-voltage current-limiting resistor 4;
the high-voltage generator 2 is connected with the boost control box 1 through a boost control plug interface 15 thereof;
the high-voltage generator 2 is connected with one end of the high-voltage current-limiting resistor 4 through a screw hole interface 12;
the high-voltage current-limiting resistor 4 is connected with the optical fiber high-voltage microammeter 3 through a three-way joint 11;
the third joint of the three-way joint 11 is connected with a voltage measurement plug interface 13 of the direct-current high-voltage measurement system 5; the direct-current high-voltage measurement system 5 is also connected with the boost control box 1;
the boost control box 1 is also connected with a local control computer 6;
the application terminal is connected to the local control computer 6 via a remote server 7.
The boost control box 1 comprises a boost control box input/output module 16, a boost control box display screen module 22, a boost control box indicator light module 23 and a boost control box control module 24;
the boost control box input/output module 16 comprises a boost control interface 18, a voltage measurement input interface 19, a current measurement input optical fiber interface 20 and an upper computer communication control interface 21;
the boost control interface 18 is connected with the boost control plug interface 15 of the high-voltage generator 2;
the voltage measurement input interface 19 is connected with the voltage measurement output plug interface 14 of the direct-current high-voltage measurement system 5;
the current measurement input optical fiber interface 20 is connected with the optical fiber high-voltage microammeter 3;
the upper computer communication control interface 21 is connected with the upper computer data interface 17 of the local control computer 6.
The application terminals include a mobile phone application terminal 8 and a portable computer application terminal 9.
The local control computer 6 comprises a boost control parameter setting module 38, a test display module, a test analysis module and a control button 43;
the test display module includes a test voltage display unit 39, a test current display unit 40, a test result table display unit 41, a test status progress display unit 42, and a test result voltage current curve display unit 44.
The boost control box display screen module 22 comprises a leakage current display unit 25, an overcurrent setting unit 26, a timing setting unit 27, an output voltage display unit 28 and an overvoltage protection setting unit 29;
the boost control box indicator lamp module 23 comprises a high-voltage on-off indicator lamp 30 and a power indicator lamp 31;
the boost control box control module 24 includes a power switch 32, a high voltage switch 33, a manual/automatic control mode switching button 34, a timer start/stop button 35, a boost control fine adjustment knob 36, and a boost control coarse adjustment knob 37.
Example 4
As shown in fig. 1 to 4, a digital direct current withstand voltage and leakage test apparatus for a hydro-generator includes: the system comprises a boost control box 1, a high-voltage generator system, a high-voltage microampere current testing system, a direct-current high-voltage measuring system 5, an on-site control computer 6 and an application terminal;
the high-voltage microampere current testing system adopts an optical fiber high-voltage microampere meter 3; the plugging interface 10 of the optical fiber high-voltage microammeter 3 is connected with a tested hydraulic generator; the optical fiber high-voltage microammeter 3 is also connected with the boost control box 1;
the high-voltage generator system comprises a high-voltage generator 2 and a high-voltage current-limiting resistor 4;
the high-voltage generator 2 is connected with the boost control box 1 through a boost control plug interface 15 thereof;
the high-voltage generator 2 is connected with one end of the high-voltage current-limiting resistor 4 through a screw hole interface 12;
the high-voltage current-limiting resistor 4 is connected with the optical fiber high-voltage microammeter 3 through a three-way joint 11;
the third joint of the three-way joint 11 is connected with a voltage measurement plug interface 13 of the direct-current high-voltage measurement system 5; the direct-current high-voltage measurement system 5 is also connected with the boost control box 1;
the boost control box 1 is also connected with a local control computer 6;
the application terminal is connected to the local control computer 6 via a remote server 7.
The boost control box 1 comprises a boost control box input/output module 16, a boost control box display screen module 22, a boost control box indicator light module 23 and a boost control box control module 24;
the boost control box input/output module 16 comprises a boost control interface 18, a voltage measurement input interface 19, a current measurement input optical fiber interface 20 and an upper computer communication control interface 21;
the boost control interface 18 is connected with the boost control plug interface 15 of the high-voltage generator 2;
the voltage measurement input interface 19 is connected with the voltage measurement output plug interface 14 of the direct-current high-voltage measurement system 5;
the current measurement input optical fiber interface 20 is connected with the optical fiber high-voltage microammeter 3;
the upper computer communication control interface 21 is connected with the upper computer data interface 17 of the local control computer 6.
The application terminals include a mobile phone application terminal 8 and a portable computer application terminal 9.
The local control computer 6 comprises a boost control parameter setting module 38, a test display module, a test analysis module and a control button 43;
the test display module includes a test voltage display unit 39, a test current display unit 40, a test result table display unit 41, a test status progress display unit 42, and a test result voltage current curve display unit 44.
The boost control box display screen module 22 comprises a leakage current display unit 25, an overcurrent setting unit 26, a timing setting unit 27, an output voltage display unit 28 and an overvoltage protection setting unit 29;
the boost control box indicator lamp module 23 comprises a high-voltage on-off indicator lamp 30 and a power indicator lamp 31;
the boost control box control module 24 includes a power switch 32, a high voltage switch 33, a manual/automatic control mode switching button 34, a timer start/stop button 35, a boost control fine adjustment knob 36, and a boost control coarse adjustment knob 37.
The boost control box 1 is respectively connected with the high-voltage generator system, the high-voltage microampere current testing system, the direct-current high-voltage measuring system 5 and the local control computer 6, and is used for collecting the testing result of the high-voltage microampere current testing system, collecting the measuring result of the direct-current high-voltage measuring system 5 and then transmitting the collected data to the local control computer 6; receiving a control signal of the local control computer 6 so as to control the operation of the high-voltage generator system;
the high-voltage generator system is used for generating direct-current voltage and outputting the direct-current voltage to the tested hydraulic generator;
the high-voltage microampere current testing system is respectively connected with the tested hydraulic generator and the high-voltage generator system and is used for measuring the current output by the high-voltage generator system to the tested hydraulic generator;
the local control computer 6 decomposes the voltage and time parameters required by the test into boost control parameters for controlling the high-voltage generator 2, and sends the boost control parameters to the boost control box 1 to control the high-voltage generator 2 to boost;
the application terminal is connected with the local control computer 6 through the remote server 7 and is used for checking historical test data of the same hydraulic generator.
The control signal input by the boost control plug interface 15 is boosted by the voltage doubling circuit of the high-voltage generator 2 and then is output to the tested hydro-generator winding by the high-voltage current limiting resistor 4, the three-way connector 11 and the optical fiber high-voltage microammeter 3.
The boost control interface 18 is connected with the boost control plug interface 15 of the high-voltage generator 2 and is used for sending a control signal to the high-voltage generator 2;
the voltage measurement input interface 19 is connected with the voltage measurement output plug interface 14 of the direct-current high-voltage measurement system 5 and is used for collecting the test result of the direct-current high-voltage measurement system 5;
the current measurement input optical fiber interface 20 is connected with the optical fiber high-voltage microammeter 3 and is used for collecting the measurement result of the optical fiber high-voltage microammeter 3;
the upper computer communication control interface 21 is connected with the upper computer data interface 17 of the local control computer 6 and is used for communicating with the local control computer 6, uploading test data of the real-time high-voltage microampere current test system and the direct-current high-voltage measurement system 5 and receiving control signals of the local control computer 6.
In order to facilitate test manager to check test data remotely and in different places, the audit test report is realized in two forms of a mobile phone application terminal 8 and a portable computer application terminal 9.
The local control computer 6 is also used for continuously sampling and recording test data, structurally storing the test data, judging the standard of the test data and analyzing the test data.
The boost control parameter setting module 38 is used for setting parameters of a boost program of the high voltage generator 2;
the test display module is used for displaying test results of the direct-current high-voltage measurement system 5 and the high-voltage microampere current test system, and displaying current test state progress and test results of direct-current withstand voltage and leakage tests;
the test analysis module is used for analyzing the test results of the direct-current high-voltage measurement system 5 and the high-voltage microampere current test system to obtain the test results of direct-current withstand voltage and leakage tests;
the control button 43 is used to control the operation of the local control computer 6.
The test voltage display unit 39 is used for displaying real-time test results of the direct-current high-voltage measurement system 5;
the test current display unit 40 is used for displaying real-time test results of the high-voltage microampere current test system;
the test result table display unit 41 is used for displaying a test result table of the direct current withstand voltage and leakage test;
the test state progress display unit 42 is used for displaying the test state progress of the boosting program of the high-voltage generator 2 in the direct-current withstand voltage test and the leakage test;
the test result voltage current curve display unit 44 is used for displaying the curve of the voltage current changing with time in the test process.
The boosting procedure includes an isochronal step voltage, a timeshare step voltage, and a ramp voltage output.
The leakage current display unit 25 is used for displaying the leakage current real-time value obtained by the test.
The overcurrent setting unit 26 has a pre-stored upper limit value of current, and is used for automatically stopping the test when the current exceeds the set value in the test process so as to ensure that the test equipment is not damaged.
The timing setting unit 27 is used for setting the time required to be held at a certain test voltage.
The output voltage display unit 28 is used for displaying the real-time voltage applied to the device under test.
The overvoltage protection setting unit 29 is pre-stored with a voltage upper limit value, and is used for automatically stopping the test when the voltage exceeds the set value in the test process so as to ensure that the tested equipment is not damaged.
The boost control box indicator lamp module 23 comprises a high-voltage on-off indicator lamp 30 and a power indicator lamp 31;
the high-voltage on-off indicator lamp 30 is used for displaying whether the high-voltage output of the test equipment is in a connection state with the tested equipment.
The power indicator lamp 31 is used for displaying the power on-off of the boost control box 1;
the control module 24 of the boost control box comprises a power switch 32, a high-voltage switch 33, a manual and automatic control mode switching button 34, a timing start-stop button 35, a boost control fine adjustment knob 36 and a boost control rough adjustment knob 37
The power switch 32 is used for controlling the power on-off of the boost control box 1;
the high voltage switch 33 is used to control the connection and disconnection between the high voltage output of the test device and the device under test in manual mode.
The manual/automatic control mode switching button 34 is used for switching between a manual control mode and an automatic control mode;
the timing start-stop button 35 is used for controlling the timing start and stop of the voltage holding stage in the test process in the manual mode;
the boost control fine tuning knob 36 is used for fine tuning of the voltage during boost in manual mode;
the step-up control coarse tuning knob 37 is used for coarse tuning of the voltage during step-up in the manual mode.
The utility model still keeps the manual mode, can switch to the manual mode through manual/automatic mode when necessary, carry on the direct-flow high-voltage withstand voltage of manual operation and leak test.
In the utility model, the local control computer 6 is connected with the boost control box 1 through a COM data interface and a data line to realize communication control. The functions such as program-controlled voltage output, continuous sampling and recording of test data, structured storage of the test data, standard comparison and judgment of the test data, voltage characteristic analysis of the current of the test data and time characteristic analysis can be further expanded.
In the utility model, the test display module is used for displaying the test voltage, current and test state progress, displaying the current values of the test voltage and current in real time, and displaying all data of the current measurement, including time, voltage and current data, through tabulation.
The utility model can display the voltage characteristic curve and time characteristic curve of the current through constant coordinates and logarithmic coordinates for the test result of the direct current withstand voltage and leakage test; the utility model can realize the setting modification of the test parameters, the test start-stop control, the test data check and the report generation through the local control computer 6.
In the utility model, the direct-current withstand voltage and leakage test data are uploaded to the remote server 7 in real time for storage and recording, and the direct-current withstand voltage and leakage test report of the hydraulic generator can be called through the application terminal for remote auditing.
The utility model relates to a boost control box 1, which is responsible for controlling information processing of a local control computer 6 in an automatic mode, issuing a control instruction to control the output voltage of a high-voltage generator system, receiving voltage and current signals fed back by a high-voltage microampere current testing system and a direct-current high-voltage measuring system 5 to the local control computer, outputting the voltage according to preset voltage control information (test voltage value, voltage holding time and boosting speed) by the local control computer 6 through the boost control box 1, controlling the high-voltage generator system to output program voltage required by a test, automatically completing the whole process through program control, recording real-time data and storing the real-time data into a database. In the manual mode, the boost control box 1 inputs information through a timing start-stop button 35, a boost control fine adjustment knob 36 and a boost control coarse adjustment knob 37 to control the output voltage of the high-voltage generator system, receives feedback voltage of the high-voltage microampere current testing system and the direct-current high-voltage measuring system 5 and forms closed loop control with the output voltage of the high-voltage generator system (direct-current high-voltage generator), and in the mode, the input information is manually input through a switch, a button and a knob of the boost control box 1.
Taking the direct current withstand voltage and leakage test of the stator winding of the 18kV hydraulic generator required by the current preventive test procedure as an example, the system of the utility model is used for carrying out corresponding tests, the test voltages are determined to be 9kV, 18kV, 27kV and 36kV in sequence, the test voltages are kept for 1 minute under each voltage, and the leakage current value is recorded in 1 minute.
The manual mode test was wired as in fig. 1. The power switch 32 is turned on in the control box, 1mA is set by the overcurrent setting unit 26, 40kV is set by the overvoltage protection setting unit 29, the manual/automatic control mode switching button 34 is switched on manually, and the high-voltage switch 33 is turned on. The step-up control coarse tuning knob 37 is operated to step up to about 8kV, the step-up control fine tuning knob 36 is operated to step up to 9kV, the timing start-stop button 35 is started to count 60 seconds, the leakage current is recorded for 60 seconds, and the timing is stopped. And operating the boost control fine adjustment knob 36, the boost control coarse adjustment knob 37 and the timing start-stop button 35 again to finish the leakage current test under 18kV voltage, repeating the boost process to finish 27kV and 36kV boost, and recording the voltage maintaining leakage current and finishing the buck test.
According to the automatic mode test, the wiring is carried out according to fig. 1, a power switch 32 is turned on a control box, a manual and automatic control mode switching button 34 is switched on automatically, a test voltage 36kV, a step voltage 9kV, a time interval 60 seconds, a sample model 18kV hydraulic generator and a test number FDJ-18-001 are set in a boost control parameter setting module 38 of a local control computer 6, and the boost is started by clicking a control button 43. The test voltage display unit 39 and the test current display unit 40 will display the voltage and current in real time, and the test state progress display unit 42 will display the test completion percentage through the percentile system. The test result voltage current curve display unit 44 updates and displays the voltage current curve in real time. The test result table display unit 41 displays leakage current under 9kV by a display unit in a 1-minute timing completion table under 9kV, and additionally displays leakage current under 18kV by 1-minute timing under 18kV, and then leakage current of 27kV and 36kV are sequentially displayed. After 36kV for 1 minute, the test is completed, and the progress shows that 100% of the system is automatically reduced to 0kV to complete the test. Meanwhile, test record reports in a template format are generated and automatically stored, the data and the reports are checked through data checking and report button generation, the data can be synchronized to a remote server 7 in a network communication state, and at the moment, a manager can check the test data and audit the test reports remotely and in different places through a mobile phone application terminal 8 and a portable computer application terminal 9. Other test voltages may be achieved in the automatic mode by software interface boost control parameter settings of the local control computer 6.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. A digital direct current withstand voltage and leakage test device for a hydro-generator, comprising: the system comprises a boost control box (1), a high-voltage generator system, a high-voltage microampere current testing system, a direct-current high-voltage measuring system (5), an on-site control computer (6) and an application terminal;
the high-voltage microampere current testing system adopts an optical fiber high-voltage microampere meter (3); the plugging interface (10) of the optical fiber high-voltage microammeter (3) is connected with the tested hydraulic generator; the optical fiber high-voltage microammeter (3) is also connected with the boost control box (1);
the high-voltage generator system comprises a high-voltage generator (2) and a high-voltage current-limiting resistor (4);
the high-voltage generator (2) is connected with the boost control box (1) through a boost control plug interface (15) thereof;
the high-voltage generator (2) is connected with one end of the high-voltage current-limiting resistor (4) through a screw hole interface (12) thereof;
the high-voltage current-limiting resistor (4) is connected with the optical fiber high-voltage microammeter (3) through a three-way joint (11);
the third joint of the three-way joint (11) is connected with a voltage measurement plug interface (13) of the direct-current high-voltage measurement system (5); the direct-current high-voltage measurement system (5) is also connected with the boost control box (1);
the boost control box (1) is also connected with a local control computer (6);
the application terminal is connected with the local control computer (6) through a remote server (7).
2. The digital direct current withstand voltage and leakage testing device for a hydraulic generator according to claim 1, wherein the boost control box (1) comprises a boost control box input/output module (16), a boost control box display screen module (22), a boost control box indicator light module (23) and a boost control box control module (24);
the boost control box input/output module (16) comprises a boost control interface (18), a voltage measurement input interface (19), a current measurement input optical fiber interface (20) and an upper computer communication control interface (21);
the boost control interface (18) is connected with the boost control plug interface (15) of the high-voltage generator (2);
the voltage measurement input interface (19) is connected with the voltage measurement output plug interface (14) of the direct-current high-voltage measurement system (5);
the current measurement input optical fiber interface (20) is connected with the optical fiber high-voltage microammeter (3);
the upper computer communication control interface (21) is connected with the upper computer data interface (17) of the local control computer (6).
3. The digital direct current withstand voltage and leakage testing device for a hydro-generator according to claim 1, characterized in that the application terminals comprise a cell phone application terminal (8) and a portable computer application terminal (9).
4. The digital direct current withstand voltage and leakage testing device for a hydro-generator according to claim 1, characterized in that the local control computer (6) comprises a boost control parameter setting module (38), a test display module, a test analysis module and a control button (43);
the test display module comprises a test voltage display unit (39), a test current display unit (40), a test result table display unit (41), a test state progress display unit (42) and a test result voltage current curve display unit (44).
5. The digital direct current withstand voltage and leakage test device for a hydraulic generator according to claim 2, wherein the boost control box display screen module (22) comprises a leakage current display unit (25), an overcurrent setting unit (26), a timing setting unit (27), an output voltage display unit (28) and an overvoltage protection setting unit (29);
the boost control box indicator lamp module (23) comprises a high-voltage on-off indicator lamp (30) and a power supply indicator lamp (31);
the boost control box control module (24) comprises a power switch (32), a high-voltage switch (33), a manual and automatic control mode switching button (34), a timing start-stop button (35), a boost control fine adjustment knob (36) and a boost control coarse adjustment knob (37).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320563145.7U CN219799644U (en) | 2023-03-21 | 2023-03-21 | Digital direct-current withstand voltage and leakage testing equipment for hydraulic generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320563145.7U CN219799644U (en) | 2023-03-21 | 2023-03-21 | Digital direct-current withstand voltage and leakage testing equipment for hydraulic generator |
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| CN219799644U true CN219799644U (en) | 2023-10-03 |
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| CN202320563145.7U Active CN219799644U (en) | 2023-03-21 | 2023-03-21 | Digital direct-current withstand voltage and leakage testing equipment for hydraulic generator |
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| Country | Link |
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| CN (1) | CN219799644U (en) |
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