Test device for detecting silicon controlled pulse of generator excitation system

Abstract

The invention belongs to the field of nuclear power station electrical engineering, and particularly relates to a silicon controlled rectifier pulse test device for detecting a generator excitation system. The device comprises a voltage regulating module, an adjustable alternating-current voltage source, an oscillographic module, a voltmeter, a waveform acquisition anode wiring terminal, a waveform acquisition cathode wiring terminal, a direct-current voltage anode acquisition wiring terminal and a direct-current voltage cathode acquisition wiring terminal. The alternating current power supply is connected with the adjustable alternating current voltage source through the voltage regulating module and used for providing alternating current power for the device, the adjustable alternating current voltage source is used for being connected with an alternating current input busbar, and the voltage regulating module is used for regulating conversion voltage; the positive input end and the negative input end of the oscillographic module are connected with a waveform acquisition anode wiring terminal and a waveform acquisition cathode wiring terminal respectively, the waveform acquisition anode wiring terminal is used for being connected with an equipment direct current output anode, and the waveform acquisition cathode wiring terminal is used for being connected with an equipment direct current output cathode; the oscillographic module is used for detecting the pulse waveform of the direct-current output end; the positive input end and the negative input end of the voltmeter are respectively connected with a direct-current voltage positive electrode acquisition wiring terminal and a direct-current voltage negative electrode acquisition wiring terminal, the direct-current voltage positive electrode acquisition wiring terminal is used for accessing a direct-current output positive electrode of equipment, and the direct-current voltage negative electrode acquisition wiring terminal is used for accessing a direct-current output negative electrode of the equipment; the voltmeter is used for measuring direct-current output voltage of equipment. The device is simple in wiring, can visually read voltage and check waveform, effectively improves the test measurement precision, improves the working efficiency, and reduces human errors at the same time.

Description

Technical Field

[0001] The invention belongs to the field of nuclear power plant electrical engineering, and in particular relates to a thyristor pulse test device for detecting an excitation system of a generator. Background Art

[0002] The generator excitation system of Units 3 and 4 of Tianwan Nuclear Power Plant is crucial to the safe and stable operation of the nuclear power plant. Its main function is to provide controllable DC current through thyristor rectifier equipment, and has short-term overload capacity, stabilize the generator terminal voltage with a certain accuracy, and improve the transient stability of the system.

[0003] Among them, the thyristor pulse detection of the generator excitation system is an important test during the overhaul. The main purpose is to test the basic control function of the excitation system regulator, the reliable triggering ability of the pulse, the performance of the thyristor, and the correctness of the output voltage and waveform. At present, the wiring of the entire test process is complicated, the test process is cumbersome, and the technical level of the personnel is very high. There may be human errors during the verification process.

[0004] Therefore, in order to optimize the test process, reduce human errors, and shorten the thyristor pulse time of the excitation system during overhaul, it is urgent to design a thyristor pulse test device for detecting the generator excitation system. Summary of the invention

[0005] The purpose of the present invention is to provide a thyristor pulse test device for detecting a generator excitation system. The device has simple wiring, can intuitively read voltage and view waveforms, effectively improves test measurement accuracy, improves work efficiency, and reduces human errors.

[0006] The technical solution to achieve the purpose of the present invention is:

[0007] A thyristor pulse test device for detecting a generator excitation system, the device comprising: a voltage regulating module, an adjustable AC voltage source, an oscilloscope module, a voltmeter, a waveform collection positive terminal, a waveform collection negative terminal, a DC voltage positive terminal, and a DC voltage negative terminal;

[0008] The AC power supply is connected to the adjustable AC voltage source through the voltage regulating module to provide AC power to the device. The adjustable AC voltage source is used to access the AC input busbar, and the voltage regulating module is used to adjust the conversion voltage;

[0009] The positive input terminal and negative input terminal of the oscilloscope module are connected to the waveform acquisition positive terminal and the waveform acquisition negative terminal respectively. The waveform acquisition positive terminal is used to connect to the positive DC output of the device, and the waveform acquisition negative terminal is used to connect to the negative DC output of the device. The oscilloscope module is used to detect the pulse waveform of the DC output terminal.

[0010] The positive input terminal and negative input terminal of the voltmeter are connected to the DC voltage positive pole collection terminal and the DC voltage negative pole collection terminal respectively. The DC voltage positive pole collection terminal is used to connect to the DC output positive pole of the device, and the DC voltage negative pole collection terminal is used to connect to the DC output negative pole of the device; the voltmeter is used to measure the DC output voltage of the device.

[0011] The device also includes a replaceable small load resistor, which is connected in parallel between the waveform acquisition positive terminal and the waveform acquisition negative terminal, and is connected to the DC output end of the field equipment to simulate the actual load condition.

[0012] The device also includes a waveform acquisition positive pole spare wiring terminal and a waveform acquisition negative pole spare wiring terminal. The positive input end of the oscilloscope module is connected to the waveform acquisition positive pole wiring terminal and the waveform acquisition positive pole spare wiring terminal in parallel, and the negative input end of the oscilloscope module is connected to the waveform acquisition negative pole wiring terminal and the waveform acquisition negative pole spare wiring terminal in parallel; the waveform acquisition positive pole spare wiring terminal and the waveform acquisition negative pole spare wiring terminal are used as spare wiring terminals, the waveform acquisition positive pole spare wiring terminal is used to connect to the positive pole of the DC output of the device, and the waveform acquisition negative pole spare wiring terminal is used to connect to the negative pole of the DC output of the device.

[0013] The device also includes a DC voltage positive pole collection standby wiring terminal and a DC voltage negative pole collection standby wiring terminal. The positive input terminal of the voltmeter is connected to the DC voltage positive pole collection standby wiring terminal and the DC voltage positive pole collection standby wiring terminal in parallel, and the negative input terminal of the voltmeter is connected to the DC voltage negative pole collection standby wiring terminal and the DC voltage negative pole collection standby wiring terminal in parallel. The DC voltage positive pole collection standby wiring terminal and the DC voltage negative pole collection standby wiring terminal serve as standby wiring terminals. The DC voltage positive pole collection standby wiring terminal is used to connect to the DC output positive pole of the device, and the DC voltage negative pole collection standby wiring terminal is used to connect to the DC output negative pole of the device.

[0014] The device also includes a waveform display module and a voltage display module; the waveform display module is connected to the oscilloscope module and is used to display the pulse waveform detected by the oscilloscope module; the voltage display module is connected to the voltmeter and is used to display the voltage value detected by the voltmeter.

[0015] The device also includes an adjustable AC voltage knob, which is connected to the adjustable AC voltage source and is used to adjust the AC voltage output size.

[0016] The device further comprises a resistance module, which is used for connecting a replaceable small load resistor.

[0017] The device also includes a waveform acquisition interface, a voltage measurement interface, and an AC output interface; the waveform acquisition interface is connected to the waveform acquisition positive pole wiring terminal, the waveform acquisition positive pole spare wiring terminal, the waveform acquisition negative pole wiring terminal, and the waveform acquisition negative pole spare wiring terminal in a one-to-one correspondence, and is used to access the DC output positive pole and the DC output negative pole of the device; the voltage measurement interface is connected to the DC voltage positive pole collection wiring terminal, the DC voltage positive pole collection spare wiring terminal, the DC voltage negative pole collection wiring terminal, and the DC voltage negative pole collection spare wiring terminal in a one-to-one correspondence, and is used to access the DC output positive pole and the DC output negative pole of the device; the AC output interface is connected to an adjustable AC voltage source, and is used to access the AC input busbar.

[0018] The device also includes a power socket, a switch, and a grounding point; the power socket is used to connect to an AC power supply to provide working power to the test device through the AC power supply; the switch is connected to the power socket, and when the power socket is connected to the AC power supply, the switch is closed and the test device is powered on and started, and the switch is opened and the test device is powered off and shut down; the grounding point is connected to the secondary grounding point.

[0019] The device also includes a portable handle, which is installed on the outer surface of the test device to facilitate the movement of the test device.

[0020] The beneficial technical effects of the present invention are:

[0021] 1. The thyristor pulse test device for detecting the excitation system of a generator of the present invention has a simple structure, convenient wiring, and shortened test time;

[0022] 2. A thyristor pulse test device for detecting a generator excitation system of the present invention can convert an AC 220V voltage into an AC 0-400V range voltage and has voltage adjustability;

[0023] 3. The thyristor pulse test device for detecting the excitation system of a generator of the present invention has an internal small load resistor that is replaceable and easy to replace;

[0024] 4. The thyristor pulse test device for detecting the excitation system of a generator of the present invention can intuitively detect the collected waveform;

[0025] 5. The thyristor pulse test device for detecting the excitation system of a generator of the present invention is equipped with a handle, is portable, and is convenient for on-site use;

[0026] 6. The thyristor pulse test device for detecting the excitation system of a generator of the present invention is provided with backup for the voltage measurement and waveform acquisition interfaces in consideration of the on-site usage;

[0027] 7. The thyristor pulse test device for detecting the excitation system of a generator of the present invention can intuitively detect the collected voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The electrical schematic diagram of a thyristor pulse test device for detecting the excitation system of a generator provided by the present invention;

[0029] Figure 2 The present invention provides a schematic structural diagram of a thyristor pulse test device for detecting a generator excitation system.

[0030] In the figure: 1-AC power supply phase A; 2-AC power supply phase B; 3-AC power supply phase C; 4-oscilloscope module; 5-replaceable small load resistor; 6-waveform acquisition positive terminal; 7-waveform acquisition positive spare terminal; 8-waveform acquisition negative terminal; 9-waveform acquisition negative spare terminal; 10-adjustable AC voltage source phase A; 11-adjustable AC voltage source phase B; 12-adjustable AC voltage source phase C; 13-voltmeter; 14-DC voltage positive terminal; 15-DC voltage positive terminal; 16-DC voltage negative terminal; 17-DC voltage negative terminal; 18-waveform display module; 19-waveform acquisition interface; 20-voltage measurement interface; 21-voltage display module; 22-portable handle; 23-AC output interface; 24-adjustable AC voltage knob; 25-switch; 26-resistance module; 27-power socket; 28-grounding point. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0032] like Figure 1 As shown, the present invention provides a thyristor pulse test device for detecting a generator excitation system, the device comprising:

[0033] The AC power supply is connected to the adjustable AC voltage source through the voltage regulating module. The AC power supply includes AC power supply A phase 1, AC power supply B phase 2, and AC power supply C phase 3, which are used to provide 220V AC power to the device and input AC power for voltage regulation. The adjustable AC voltage source includes adjustable AC voltage source A phase 10, adjustable AC voltage source B phase 11, and adjustable AC voltage source C phase 12, which can output A, B, C three-phase 0-400V AC voltage for connection to the AC input busbar. The voltage regulating module converts the AC 220V voltage into an AC 0-400V range voltage and has voltage adjustability.

[0034] The positive input terminal and negative input terminal of the oscilloscope module 4 are respectively connected to the waveform acquisition positive terminal 6 and the waveform acquisition negative terminal 8. The waveform acquisition positive terminal 6 is used to connect to the positive DC output of the device, and the waveform acquisition negative terminal 8 is used to connect to the negative DC output of the device. The oscilloscope module 4 is used to detect the pulse waveform of the DC output terminal of the thyristor of the generator excitation system. When the thyristor of the generator excitation system converts the collected AC voltage into DC voltage, the pulse waveform of the DC output terminal is detected, and whether the output pulse is correct can be judged according to the waveform.

[0035] The waveform acquisition positive terminal 6 and the waveform acquisition negative terminal 8 are connected in parallel to replace the small load resistor 5, and this load resistor is connected to the DC output end of the field equipment to simulate the actual load condition.

[0036] In one embodiment, the test device further includes a waveform acquisition positive pole spare wiring terminal 7 and a waveform acquisition negative pole spare wiring terminal 9. The positive input terminal of the oscilloscope module 4 is connected to the waveform acquisition positive pole wiring terminal 6 and the waveform acquisition positive pole spare wiring terminal 7 in parallel, and the negative input terminal of the oscilloscope module 4 is connected to the waveform acquisition negative pole wiring terminal 8 and the waveform acquisition negative pole spare wiring terminal 9 in parallel. The waveform acquisition positive pole spare wiring terminal 7 and the waveform acquisition negative pole spare wiring terminal 9 are used as spare wiring terminals. When the waveform acquisition positive pole wiring terminal 6 is damaged, the waveform acquisition positive pole spare wiring terminal 7 is used to connect to the positive pole of the DC output of the device. When the waveform acquisition negative pole wiring terminal 8 is damaged, the waveform acquisition negative pole spare wiring terminal 9 is used to connect to the negative pole of the DC output of the device.

[0037] The positive input terminal and negative input terminal of the voltmeter 13 are respectively connected to the DC voltage positive pole collection terminal 14 and the DC voltage negative pole collection terminal 16. The DC voltage positive pole collection terminal 14 is used to connect to the DC output positive pole of the device, and the DC voltage negative pole collection terminal 16 is used to connect to the DC output negative pole of the device. The voltmeter 13 is used to measure the DC output voltage of the device.

[0038] In another embodiment, the test device further includes a DC voltage positive pole collection standby wiring terminal 15 and a DC voltage negative pole collection standby wiring terminal 17. The positive input terminal of the voltmeter 13 is connected to the DC voltage positive pole collection standby wiring terminal 14 and the DC voltage positive pole collection standby wiring terminal 15 in parallel, and the negative input terminal of the voltmeter 13 is connected to the DC voltage negative pole collection standby wiring terminal 16 and the DC voltage negative pole collection standby wiring terminal 17 in parallel. The DC voltage positive pole collection standby wiring terminal 15 and the DC voltage negative pole collection standby wiring terminal 17 are used as standby wiring terminals. When the DC voltage positive pole collection wiring terminal 14 is damaged, the DC voltage positive pole collection standby wiring terminal 15 is used to connect to the DC output positive pole of the device. When the DC voltage negative pole collection wiring terminal 16 is damaged, the DC voltage negative pole collection standby wiring terminal 17 is used to connect to the DC output negative pole of the device.

[0039] In another embodiment, Figure 2 As shown, the test device also includes: a waveform display module 18, a waveform acquisition interface 19, a voltage measurement interface 20, a voltage display module 21, an AC output interface 23, an adjustable AC voltage knob 24, a switch 25, a resistance module 26, a power socket 27, and a grounding point 28.

[0040] The waveform display module 18, the waveform acquisition interface 19, the voltage measurement interface 20, the voltage display module 21, the AC output interface 23, the adjustable AC voltage knob 24, the switch 25, the resistance module 26, the power socket 27, and the grounding point 28 are installed on the outer surface of the test device.

[0041] The waveform display module 18 is connected to the oscilloscope module 4 and is used to display the pulse waveform detected by the oscilloscope module 4 .

[0042] The voltage display module 21 is connected to the voltmeter 13 and is used to display the voltage value detected by the voltmeter 13 .

[0043] The adjustable AC voltage knob 24 is connected to the adjustable AC voltage source and is used to adjust the AC voltage output.

[0044] The resistor module 26 is used to connect a replaceable small load resistor 5 .

[0045] The waveform acquisition interface 19 is connected to the waveform acquisition positive terminal 6, the waveform acquisition positive spare terminal 7, the waveform acquisition negative terminal 8, and the waveform acquisition negative spare terminal 9 in a one-to-one correspondence, and is used to access the positive DC output of the device and the negative DC output of the device.

[0046] The voltage measurement interface 20 is connected to the DC voltage positive pole collection terminal 14, the DC voltage positive pole collection standby terminal 15, the DC voltage negative pole collection terminal 16, and the DC voltage negative pole collection standby terminal 17 in a one-to-one correspondence, and is used to access the DC output positive pole and the DC output negative pole of the device.

[0047] The power socket 27 is used to connect to an AC power source to provide working power to the test device.

[0048] The AC output interface 23 is connected to an adjustable AC voltage source and is used to access an AC input busbar.

[0049] The switch 25 is connected to the power socket 27. When the power socket 27 is connected to an AC power source, the switch 25 is closed and the test device is powered on and started. When the switch 25 is opened, the test device is powered off and shut down.

[0050] The grounding point 28 is connected to the secondary grounding point.

[0051] In another embodiment, Figure 2 As shown, a portable handle 22 is installed on the outer surface of the test device to facilitate the movement of the test device.

[0052] The invention provides a pulse test device for detecting the thyristor pulse of the generator excitation system, and performs pulse and voltage detection on the thyristor pulse of the generator excitation system, which specifically includes the following steps:

[0053] Step 1. Connect the adjustable AC voltage source of the test device to the three-phase AC input busbar, that is, the adjustable AC voltage source A phase 10, the adjustable AC voltage source B phase 11, and the adjustable AC voltage source C phase 12 are connected to the three-phase AC input busbar of the tested equipment.

[0054] Step 2: Connect the waveform acquisition positive terminal 6 to the DC output positive pole of the test equipment.

[0055] Step 3: Connect the waveform acquisition negative terminal 8 to the negative pole of the tested DC output.

[0056] Step 4: Connect the DC voltage positive electrode collection terminal 14 to the DC output positive electrode of the tested equipment.

[0057] Step 5: Connect the DC voltage negative pole collection terminal 16 to the DC output negative pole of the test equipment.

[0058] Step 6: Connect the power socket 27 to a power source (AC power source) near the site to provide working power to the test device.

[0059] Step 7: Connect the grounding point 28 to the secondary grounding point.

[0060] Step 8: Close the switch 25 to energize the test device.

[0061] Step 9: adjust the voltage to the test voltage by operating the adjustable AC voltage knob 24, record the waveform displayed by the waveform display module 18 and the voltage value displayed by the voltage display module 21, and the test is completed.

[0062] Step 10: After the test is completed, operate the adjustable AC voltage knob 24 to adjust the voltage to 0V.

[0063] Step 11: Disconnect switch 25 and remove all connecting wires to the test equipment.

[0064] The present invention is described in detail above with reference to the accompanying drawings and embodiments, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention. The contents not described in detail in the present invention can adopt the existing technology.

Claims

1. A thyristor pulse test device for detecting generator excitation system, characterized in that: The device comprises: a voltage regulating module, an adjustable AC voltage source, an oscilloscope module (4), a voltmeter (13), a waveform collection positive electrode connection terminal (6), a waveform collection negative electrode connection terminal (8), a DC voltage positive electrode connection terminal (14), and a DC voltage negative electrode connection terminal (16); The AC power supply is connected to the adjustable AC voltage source through the voltage regulating module to provide AC power to the device. The adjustable AC voltage source is used to access the AC input busbar, and the voltage regulating module is used to adjust the conversion voltage; The positive input terminal and the negative input terminal of the oscilloscope module (4) are respectively connected to the waveform acquisition positive electrode connection terminal (6) and the waveform acquisition negative electrode connection terminal (8); the waveform acquisition positive electrode connection terminal (6) is used to connect to the positive electrode of the DC output of the device, and the waveform acquisition negative electrode connection terminal (8) is used to connect to the negative electrode of the DC output of the device; the oscilloscope module (4) is used to detect the pulse waveform of the DC output terminal; The positive input terminal and the negative input terminal of the voltmeter (13) are respectively connected to the DC voltage positive pole collection terminal (14) and the DC voltage negative pole collection terminal (16); the DC voltage positive pole collection terminal (14) is used to connect to the DC output positive pole of the device, and the DC voltage negative pole collection terminal (16) is used to connect to the DC output negative pole of the device; the voltmeter (13) is used to measure the DC output voltage of the device.

2. A thyristor pulse test device for detecting generator excitation system according to claim 1, characterized in that: The device also includes a replaceable small load resistor (5), which is connected in parallel between the waveform collection positive terminal (6) and the waveform collection negative terminal (8), and the load resistor is connected to the DC output end of the field device to simulate a real load condition.

3. The thyristor pulse test device for detecting the excitation system of a generator according to claim 1 is characterized in that: The device further comprises a waveform collection positive pole spare wiring terminal (7) and a waveform collection negative pole spare wiring terminal (9); the positive input end of the oscilloscope module (4) is connected to the waveform collection positive pole wiring terminal (6) and the waveform collection positive pole spare wiring terminal (7) connected in parallel, and the negative input end of the oscilloscope module (4) is connected to the waveform collection negative pole wiring terminal (8) and the waveform collection negative pole spare wiring terminal (9) connected in parallel; the waveform collection positive pole spare wiring terminal (7) and the waveform collection negative pole spare wiring terminal (9) serve as spare wiring terminals, the waveform collection positive pole spare wiring terminal (7) is used to connect to the positive pole of the DC output of the device, and the waveform collection negative pole spare wiring terminal (9) is used to connect to the negative pole of the DC output of the device.

4. The thyristor pulse test device for detecting the excitation system of a generator according to claim 1 is characterized in that: The device further comprises a DC voltage positive pole collection standby wiring terminal (15) and a DC voltage negative pole collection standby wiring terminal (17); the positive input terminal of the voltmeter (13) is connected to the DC voltage positive pole collection standby wiring terminal (14) and the DC voltage positive pole collection standby wiring terminal (15) connected in parallel; the negative input terminal of the voltmeter (13) is connected to the DC voltage negative pole collection standby wiring terminal (16) and the DC voltage negative pole collection standby wiring terminal (17) connected in parallel; the DC voltage positive pole collection standby wiring terminal (15) and the DC voltage negative pole collection standby wiring terminal (17) serve as standby wiring terminals; the DC voltage positive pole collection standby wiring terminal (15) is used to connect to the DC output positive pole of the device; and the DC voltage negative pole collection standby wiring terminal (17) is used to connect to the DC output negative pole of the device.

5. The thyristor pulse test device for detecting the excitation system of a generator according to claim 1 is characterized in that: The device further comprises a waveform display module (18) and a voltage display module (21); the waveform display module (18) is connected to the oscilloscope module (4) and is used to display the pulse waveform detected by the oscilloscope module (4); the voltage display module (21) is connected to the voltmeter (13) and is used to display the voltage value detected by the voltmeter (13).

6. The thyristor pulse test device for detecting the excitation system of a generator according to claim 1 is characterized in that: The device also includes an adjustable AC voltage knob (24), which is connected to an adjustable AC voltage source and is used to adjust the AC voltage output.

7. The thyristor pulse test device for detecting the excitation system of a generator according to claim 2 is characterized in that: The device further comprises a resistance module (26), wherein the resistance module (26) is used for connecting a replaceable small load resistor (5).

8. A thyristor pulse test device for detecting generator excitation system according to any one of claims 3 or 4, characterized in that: The device further comprises a waveform acquisition interface (19), a voltage measurement interface (20), and an AC output interface (23); the waveform acquisition interface (19) is connected to the waveform acquisition positive electrode wiring terminal (6), the waveform acquisition positive electrode standby wiring terminal (7), the waveform acquisition negative electrode wiring terminal (8), and the waveform acquisition negative electrode standby wiring terminal (9) in a one-to-one correspondence, and is used to connect to the positive DC output of the device and the negative DC output of the device; the voltage measurement interface (20) is connected to the DC voltage positive electrode collection wiring terminal (14), the DC voltage positive electrode collection standby wiring terminal (15), the DC voltage negative electrode collection wiring terminal (16), and the DC voltage negative electrode collection standby wiring terminal (17) in a one-to-one correspondence, and is used to connect to the positive DC output of the device and the negative DC output of the device; the AC output interface (23) is connected to an adjustable AC voltage source, and is used to connect to an AC input busbar.

9. The thyristor pulse test device for detecting the excitation system of a generator according to claim 1 is characterized in that: The device further comprises a power socket (27), a switch (25), and a grounding point (28); the power socket (27) is used to connect to an alternating current power source, and the alternating current power source is used to provide working power to the test device; the switch (25) is connected to the power socket (27); when the power socket (27) is connected to the alternating current power source, the switch (25) is closed, and the test device is powered on and started; when the switch (25) is opened, the test device is powered off and shut down; and the grounding point (28) is connected to a secondary grounding point.

10. The thyristor pulse test device for detecting the excitation system of a generator according to claim 1, characterized in that: The device also includes a portable handle (22) which is mounted on the outer surface of the test device to facilitate movement of the test device.

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