CN209764962U - Test device for excitation system control and rectification loop function verification - Google Patents
Test device for excitation system control and rectification loop function verification Download PDFInfo
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- CN209764962U CN209764962U CN201920262829.7U CN201920262829U CN209764962U CN 209764962 U CN209764962 U CN 209764962U CN 201920262829 U CN201920262829 U CN 201920262829U CN 209764962 U CN209764962 U CN 209764962U
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Abstract
A test device for excitation system control and rectification loop function verification comprises a main circuit breaker, an isolation transformer, an oscilloscope, a branch circuit breaker and a regulating transformer. The input terminal of the alternating current power supply is connected with one end of a main circuit breaker, and the other end of the main circuit breaker is respectively connected with an isolation transformer, a branch circuit breaker and a regulating transformer. The isolation transformer is connected with the power input end of the oscilloscope, and the signal input end of the oscilloscope is connected with the pulse transformer of the power cabinet; the three-phase rectifier bridge of the power cabinet is connected with the signal input end of the oscilloscope through a high-power resistor; the branch circuit breaker is connected with an alternating current power supply output terminal of the power cabinet; the voltage regulating transformer is connected with an excitation regulator PT and a synchronous TB voltage terminal of the regulator cabinet. The utility model discloses the device possesses excitation system undercurrent test function, arouses return circuit test function, can freely adjust excitation system PT magnitude of voltage, can show the voltage waveform of rectifier circuit output in real time, provides simple analysis function.
Description
Technical Field
The utility model relates to an excitation system control technical field specifically is a test device that is used for excitation system control and rectification circuit function check-up.
Background
At present, no test device for excitation system control and rectification loop function verification exists in the market. The field test must artificially build a test platform.
In the excitation system control and the rectification loop function verification, the defects and shortcomings of the prior art are as follows:
1: in the field test, a test platform needs to be manually built, various test devices and test instruments need to be prepared in the early stage, and the process is complicated.
2: the test equipment needs on-site wiring, and wrong connection and missed connection can cause test failure.
3: the built test platform has the risk of endangering personal safety and equipment when carrying out small current tests.
4: the test record depends on manual reading or photographing record, and is not beneficial to later-stage test data arrangement and analysis.
Disclosure of Invention
To the technical problem, the utility model provides a test device for excitation system control and rectification return circuit function check-up, the device possess excitation system undercurrent test function, excitation circuit test function, can freely adjust excitation system PT voltage value, can show the voltage waveform of rectification return circuit output in real time, provide simple analysis function.
The utility model discloses the technical scheme who takes does:
A test device for excitation system control and rectification loop function verification comprises a main circuit breaker, an isolation transformer, an oscilloscope, a branch circuit breaker and a regulating transformer. The input terminal of the alternating current power supply is connected with one end of a main circuit breaker, and the other end of the main circuit breaker is respectively connected with an isolation transformer, a branch circuit breaker and a regulating transformer.
The isolation transformer is connected with the power input end of the oscilloscope, and the signal input end of the oscilloscope is connected with the pulse transformer of the power cabinet; the three-phase rectifier bridge of the power cabinet is connected with the signal input end of the oscilloscope through a high-power resistor; the branch circuit breaker is connected with an alternating current power supply output terminal of the power cabinet; the voltage regulating transformer is connected with an excitation regulator PT and a synchronous TB voltage terminal of the regulator cabinet.
And a voltmeter is arranged on a connecting line between the regulating transformer and the regulator cabinet.
The utility model relates to a test device for excitation system control and rectification circuit function check-up, the technological effect as follows:
(1): the test equipment is integrated, simple, safe and convenient to use.
(2): can output required voltage value to PT, synchronous (TB) voltage terminal, and can be read visually.
(3): the open-loop excitation small current test can be carried out, and the control functions of excitation simulation, magnetism increase and reduction, PT disconnection and the like of the regulator are tested.
(4): the output waveform of the rectifier bridge, the pulse-to-primary waveform and the pulse-to-secondary waveform can be collected simultaneously.
(5): the oscilloscope can visually display real-time waveforms output by the control and rectification loop of the excitation regulator, can record waves, has the functions of storing and analyzing waveform files, can manually adjust the wave recording time, can record waves in advance, and can be used for storing and analyzing data after the mobile storage medium is copied.
Drawings
Fig. 1 is an electrical connection block diagram of the testing device of the present invention.
Fig. 2 is an external structural schematic diagram of the testing device of the present invention.
Fig. 3 is a circuit diagram of the testing apparatus of the present invention.
Wherein: an oscilloscope signal input end 4-1, a regulating transformer output end 8-1 and a regulating transformer output knob 8-2.
Detailed Description
As shown in fig. 1, 2, and 3, a test apparatus for excitation system control and rectification loop function verification includes a main circuit breaker 2, an isolation transformer 3, an oscilloscope 4, a branch circuit breaker 6, and a regulating transformer 8.
The alternating current power supply input terminal 1 is connected with one end of a main circuit breaker 2, and the other end of the main circuit breaker 2 is respectively connected with an isolation transformer 3, a branch circuit breaker 6 and a regulating transformer 8.
The isolation transformer 3 is connected with the power input end of the oscilloscope 4, and the signal input end of the oscilloscope 4 is connected with the pulse transformer 11-1 of the power cabinet 11;
A three-phase rectifier bridge 11-2 of the power cabinet 11 is connected with a signal input end of the oscilloscope 4 through a high-power resistor 5;
the branch circuit breaker 6 is connected with an alternating current power supply output terminal 7 of the power cabinet 11;
The voltage regulating transformer 8 is connected to an excitation regulator PT and a synchronous TB voltage terminal of the regulator cabinet 10.
And a voltmeter 9 is arranged on a connecting line between the regulating transformer 8 and the regulator cabinet 10.
And the output knob 8-2 of the regulating transformer is used for regulating the output voltage of the output end 8-1 of the regulating transformer.
The ac power input terminal 1 is connected to a three-phase ac power source, and the three-phase ac power source is input through the ac power input terminal 1.
The main breaker 2 is used for controlling the input of a three-phase alternating current power supply of the testing device, and can play a role in protection, if any abnormality is found in the testing process, the main breaker 2 can be rapidly and manually disconnected, and meanwhile, a loop of the testing device provides overload protection. The main breaker 2 adopts an IC65N-C63A/3P breaker.
The isolation transformer 3 provides power for the oscilloscope 4, and harmonic interference is avoided. The isolation transformer 3 adopts a BK250D01 isolation transformer.
The oscilloscope 4 can collect the output waveform of the three-phase rectifier bridge 11-2 of the power cabinet 11 and the primary and secondary waveforms of the pulse transformer 11-1, and has the functions of waveform analysis, waveform file storage, mobile medium copying and the like. The oscilloscope 4 adopts a Fluke 190-104/S oscilloscope.
The high-power resistor 5 is used for simulating the load of an excitation system and can tolerate high power. High power resistance 5 parameters: 100 omega/10000W.
The branch circuit breaker 6 is used for controlling the on-off of the alternating current power supply of the field power cabinet and providing overload protection. The AC power output terminal 7 provides AC power input of the three-phase rectifier bridge 11-2 for the power cabinet 11. The branch circuit breaker 6 adopts an IC65N-C63A/3P breaker.
The regulating transformer 8 provides a variable PT, synchronous (TB) voltage to the field excitation regulator. The voltmeter 9 is used for monitoring the voltage regulation and transformation voltage and displaying the output voltage value of the voltage regulation transformer 8 in real time.
The voltage regulating transformer 8 adopts a TSGC2J-3 voltage regulating transformer, and the voltmeter 9 adopts a PMAC625 three-phase voltmeter.
Excitation regulator PT, synchronous TB voltage terminal: for a field excitation regulator PT, synchronous (TB) voltage given, the field verification excitation regulator control function must provide the PT voltage and the synchronous (TB) voltage.
The working principle is as follows:
The test device is mainly used for power plant excitation system control and rectification loop function verification, can provide PT machine end voltage signals and TB synchronous voltage signals for an excitation system, can provide power cabinet alternating current power supply input, and is provided with a high-power resistor 5 for simulating a rotor and an oscilloscope for output waveform observation.
The power supply of the test device is divided into three paths of power supplies after passing through the main breaker 2:
The first path of power supply is used as an alternating current input power supply of a three-phase rectifier bridge 11-2, when a rectifier bridge controlled silicon is normally triggered and conducted, a power cabinet rectifier bridge outputs direct current to a high-power resistor 5 (a simulation rotor), and the voltage waveform of the direct current of the resistor is measured through an oscilloscope 4;
The second power supply is regulated to the voltage required by the test through the voltage regulating transformer 8, the voltage is output to terminals PT and TB of the excitation regulator, the terminal voltage and the synchronous voltage are simulated, and the voltmeter 9 can display the simulated terminal voltage and the synchronous voltage in real time;
The third power supply provides reliable and stable working power supply for the oscilloscope 4 after passing through the isolation transformer 3.
After the excitation system regulator collects the PT terminal voltage signal and TB synchronous voltage signal provided by the test device, the excitation system regulator can be manually operated to increase and decrease the magnetic button, so that the trigger angle of the controllable silicon on the rectifier bridge is changed between 15 and 120 degrees, and the waveforms corresponding to different angles are observed to check the correctness of the control function of the excitation system and the function of the rectifier circuit.
in addition, the device can record the primary side and the secondary side of the pulse transformer at the same time, and judge whether the pulse transformer works normally or not by observing parameters such as the amplitude, the period, the duty ratio and the like of the trigger pulse.
Because the high-power resistor 5 is used by the testing device, the testing device can bear large current, and has the function of testing the correctness of the functions of the control and rectifying circuit of the excitation system when the unit is in a power-on test in an idle state.
Claims (3)
1. A test device for excitation system control and rectification loop function verification comprises a main circuit breaker (2), an isolation transformer (3), an oscilloscope (4), a branch circuit breaker (6) and a regulating transformer (8); the method is characterized in that: an alternating current power supply input terminal (1) is connected with one end of a main circuit breaker (2), and the other end of the main circuit breaker (2) is respectively connected with an isolation transformer (3), a branch circuit breaker (6) and a regulating transformer (8);
The isolation transformer (3) is connected with the power input end of the oscilloscope (4), and the signal input end of the oscilloscope (4) is connected with the pulse transformer (11-1) of the power cabinet (11);
a three-phase rectifier bridge (11-2) of the power cabinet (11) is connected with a signal input end of the oscilloscope (4) through a high-power resistor (5);
the branch circuit breaker (6) is connected with an alternating current power supply output terminal (7) of the power cabinet (11);
The voltage regulating transformer (8) is connected with an excitation regulator PT and a synchronous TB voltage terminal of the regulator cabinet (10).
2. The test device for excitation system control and rectification loop function verification according to claim 1, wherein: and a voltmeter (9) is arranged on a connecting line between the regulating transformer (8) and the regulator cabinet (10).
3. the test device for excitation system control and rectification loop function verification according to claim 1, wherein: the device also comprises a regulating transformer output knob (8-2) which is used for regulating the output voltage of the regulating transformer output end (8-1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920262829.7U CN209764962U (en) | 2019-03-01 | 2019-03-01 | Test device for excitation system control and rectification loop function verification |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920262829.7U CN209764962U (en) | 2019-03-01 | 2019-03-01 | Test device for excitation system control and rectification loop function verification |
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| CN209764962U true CN209764962U (en) | 2019-12-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879991A (en) * | 2020-07-13 | 2020-11-03 | 中国水利水电第十二工程局有限公司 | Test device for primary through-flow secondary pressurization and excitation small current |
| CN111900700A (en) * | 2020-07-08 | 2020-11-06 | 西安热工研究院有限公司 | Method for identifying fault of anode power supply of excitation modulation system of generator |
| CN113644851A (en) * | 2021-07-06 | 2021-11-12 | 中国长江三峡集团有限公司 | State maintenance method for generator excitation system |
| CN115360947A (en) * | 2022-08-31 | 2022-11-18 | 中国长江三峡集团有限公司 | Excitation circuit, excitation small current test method and electronic equipment |
-
2019
- 2019-03-01 CN CN201920262829.7U patent/CN209764962U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111900700A (en) * | 2020-07-08 | 2020-11-06 | 西安热工研究院有限公司 | Method for identifying fault of anode power supply of excitation modulation system of generator |
| CN111879991A (en) * | 2020-07-13 | 2020-11-03 | 中国水利水电第十二工程局有限公司 | Test device for primary through-flow secondary pressurization and excitation small current |
| CN113644851A (en) * | 2021-07-06 | 2021-11-12 | 中国长江三峡集团有限公司 | State maintenance method for generator excitation system |
| CN115360947A (en) * | 2022-08-31 | 2022-11-18 | 中国长江三峡集团有限公司 | Excitation circuit, excitation small current test method and electronic equipment |
| CN115360947B (en) * | 2022-08-31 | 2023-07-25 | 中国长江三峡集团有限公司 | Excitation circuit, excitation small current test method and electronic equipment |
| EP4332593A1 (en) * | 2022-08-31 | 2024-03-06 | China Three Gorges Co., Ltd. | Excitation circuit, excitation small-current test method and electronic device |
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