CN102012481B - Thyristor level test method for novel converter valve module - Google Patents
Thyristor level test method for novel converter valve module Download PDFInfo
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- 238000010998 test method Methods 0.000 title claims abstract description 9
- 238000012360 testing method Methods 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000013016 damping Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000002950 deficient Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims description 2
- 230000005622 photoelectricity Effects 0.000 claims description 2
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- 238000009666 routine test Methods 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 2
- 238000011990 functional testing Methods 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 208000034657 Convalescence Diseases 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The invention relates to the field of power system devices, in particular to a test method for a novel converter valve module. Before each converter valve leaves a factory, a routine test needs to be performed, wherein the most important item in the routine test is a functional test which is used for checking whether the thyristor level electric wiring of the converter valve module and thyristor electric equipment (TE) are normal. The invention discloses a novel design method for the functional test. A test circuit comprises an alternating current power supply, an alternating current filter, an isolating switch, a voltage regulator, an isolating transformer, a current limiting resistor, an insulated grid bipolar-type power tubes (IGBTs) which are connected in series positively and negatively, an impulse voltage generator and a test platform. The work of the test circuit is that: unified control is performed through the test platform; a test voltage is provided for a thyristor level by the alternating current system circuit; the on-off state of a loop is controlled by the IGBTs so that the voltage and the current applied to the thyristor level change; and the impulse voltage generator is used for providing an impulse voltage for the thyristor level.
Description
Technical field
The present invention relates to electric system devices field, be specifically related to a kind of novel converter valve module test method.
Background technology
The most basic in converter valve module test is routine test, before routine test, need to carry out functional trial, because traditional DC transmission engineering is all the external converter valve of buying, thereby functional trial in converter valve routine test all needs to use valve test equipment (VTE) to test, the technology of VTE is grasped by foreign company for a long time, the domestic converter valve that also there is no at present independent research due to DC transmission engineering, thereby this functional trial does not have reliable test method and advanced testing equipment yet, this invention is the design proposal that proposes the test of a kind of converter valve functions of modules of novelty under a kind of like this background technology, this Technical Design method novelty, there is very strong novelty.
Invention CN20010241741.8 has described a kind of novel DC converter valve routine test unit, it is characterized in that utilizing the core of industrial computer as system, comprise various test peripheral circuits, low-voltage triggers test unit, surge voltage unit, impedance instrument etc.Utilize discharging and recharging and the work of other peripherals of PLC steering logic control impact unit.This test unit forms complicated, realizes difficulty larger, at present the domestic test unit that does not also have yet independent research success and be applied to Practical Project.Invention circuit design of the present invention is simple, is easy to realize, and Billy controls simple optimizing with PLC.TE Testing Table Design is simple, and all control loop all adopts light path control, prevents that electric signal from disturbing, and controls safe and reliable.
Summary of the invention
The object of this invention is to provide a kind of DC converter valve TE function test method of novelty.Before dispatching from the factory in each converter valve module, must carry out routine test, in routine test, most important one is functional trial, for verifying the electrical wiring of converter valve module thyristor level, whether function is normal for thyristor electronic equipment (TE).In order to overcome owing to not having in the situation of external import VTE, can carry out smoothly valve module routine test, method of the present invention has been proposed.The correct wiring of thyristor level and the reliably working of TE are the preconditions that guarantees the operation of converter valve normal operation, still there is no to research and develop on market a successful VTE due at present domestic, in order to promote the production domesticization research and development process of converter valve, the present invention proposes a kind of test method of novelty, for complete this functional trial content under the condition that there is no VTE.
A kind of thyristor level test method for novel converter valve module that the present invention proposes, comprises
(1) hookup comprises that insulated gate bipolar translator power tube IGBT, impulse voltage generator and the test platform of AC power, alternating current filter, disconnector, pressure regulator, isolating transformer, current-limiting resistance, forward and reverse series connection form, in circuit, AC power is connected with alternating current filter AF, object is in order to obtain good alternating voltage waveform, AC power is connected with disconnector, provides on-off circuit to circuit, power supply is connected with pressure regulator by disconnector, the output terminal of pressure regulator is connected with the input end of isolating transformer, by adjusting the voltage of pressure regulator, adjust the output voltage of transformer, the output terminal of isolating transformer is connected with current-limiting resistance, effect is that the electric current of limit circuit is not excessive, thereby avoid in defective loop other components and parts, the output terminal of current-limiting resistance is connected with insulated gate bipolar translator power tube IGBT, the output terminal of insulated gate bipolar translator power tube IGBT is connected with thyristor level test product, object is for turning on and off by control insulated gate bipolar translator power tube IGBT, control the voltage waveform that is applied to thyristor two ends, the output terminal of impulse voltage generator is connected with thyristor level test product, high-pressure side is connected on thyristor anode, low pressure end is connected with thyristor negative electrode, and ground connection, effect is for thyristor is applied to surge voltage,
(2) connected mode of the insulated gate bipolar translator power tube IGBT of described forward and reverse series connection is that the first insulated gate bipolar translator power tube IGBT1 and the second insulated gate bipolar translator power tube IGBT2 are connected in parallel, each insulated gate bipolar translator power tube IGBT is parallel with fly-wheel diode, when circuit voltage is timing, electric current in loop forms path by the parallel diode of the first insulated gate bipolar translator power tube IGBT1 and the second insulated gate bipolar translator power tube IGBT2, for thyristor provides forward voltage; When circuit voltage is when negative, the electric current in loop forms path by the parallel diode of the second insulated gate bipolar translator power tube IGBT2 and the first insulated gate bipolar translator power tube IGBT1, for thyristor provides reverse voltage; Send trigger pulse by test platform to insulated gate bipolar translator power tube IGBT, in the time that trigger pulse is high level, insulated gate bipolar translator power tube IGBT conducting, in the time that trigger pulse is low level, insulated gate bipolar translator power tube IGBT turn-offs; In the time of insulated gate bipolar translator power tube IGBT conducting, loop is open-minded, and voltage is applied to thyristor anode, and in the time that turn-off in loop, voltage can not add to thyristor anode;
Wherein, described impulse voltage generator adopts photoelectricity triggering mode, and in the time receiving the triggering firing pulse of test platform transmission, impulse voltage generator triggers igniting, make the breakdown electric discharge of ball gap of impulse voltage generator, High Voltage Impulse Waveform is applied to thyristor two ends.
Wherein, described test platform, by being connected with AC power supply, by alternating current filter, obtains the synchronous working signal for test platform work, sends trigger pulse by built-in system to the circuit board TE of thyristor level, and accepts its return pulse.
Wherein, described thyristor level test product comprises damping circuit, the equal hydraulic circuit of direct current, thyristor and thyristor electronic equipment TE, and damping circuit comprises damping resistance and damping capacitor, and the equal hydraulic circuit of direct current comprises two direct current equalizing resistance series connection.
The functional trial that the invention has the beneficial effects as follows thyristor level and TE needs voltage generation circuit and TE return pick-up unit jointly to complete, wherein voltage generation circuit comprises power frequency low voltage generating device and impulse voltage generator, the normal need of work of thyristor is sent and is triggered coded pulse to TE by test platform, produce trigger pulse by TE, and trigger thyristor, and receive the various reported information that produced by TE, by test platform, the status information that is applied to the electric current and voltage of impulse voltage generator and returned by TE is comprehensively judged, provide the result of this functional trial.
Accompanying drawing explanation
In order to make content of the present invention by clearer understanding, and be convenient to the description of embodiment, provide accompanying drawing related to the present invention below and be described as follows:
Fig. 1 is converter valve module test schematic diagram of the present invention.
Fig. 2 is thyristor trigger voltage waveform and trigger waveform.
Fig. 3 is the waveform of thyristor convalescence protection test.
Embodiment
The technical scheme of this invention as shown in Figure 1, this test unit is made up of pressure regulator, isolating transformer, current-limiting resistance, TE test platform, impulse voltage generator, test product and TE, its electric connecting relation as seen from the figure, its principle of work is as follows: voltage generation circuit forms low-voltage loop by 220Vms alternating current source and isolating transformer, impulse voltage generator forms high voltage circuit, this two complete the needed voltage waveform of functional trial.TE test platform sends thyristor to TE and triggers coded pulse, and receives the status monitoring information of being returned by TE.
Referring to accompanying drawing 1, converter valve module thyristor level hookup is to be made up of IGBT, impulse voltage generator, the test platform of AC power, alternating current filter, disconnector, pressure regulator, isolating transformer, current-limiting resistance, forward and reverse series connection.In circuit, AC power is connected with alternating current filter AF, and object is that AC power is connected with disconnector, for providing on-off circuit to circuit in order to obtain good alternating voltage waveform.Power supply is connected with pressure regulator by disconnector, and the output terminal of pressure regulator is connected with the input end of isolating transformer, can, by adjusting the voltage of pressure regulator, adjust the output voltage of transformer.The output terminal of isolating transformer is connected with current-limiting resistance, object be for the electric current of limit circuit not excessive, so as not to other components and parts in defective loop.The output terminal of current-limiting resistance is connected with IGBT, and the output terminal of GBT is connected with thyristor level test product, and object is for by controlling turning on and off of IGBT, controls the voltage waveform that is applied to thyristor two ends.The output terminal of impulse voltage generator is connected with thyristor level test product, and high-pressure side is connected on thyristor anode, and low pressure end is connected with thyristor negative electrode, and ground connection, its objective is for thyristor is applied to surge voltage.Impulse voltage generator is that the light trigger pulse that is about 100us to its transmitted width by test platform makes it trigger igniting.
The connected mode of the IGBT of forward and reverse series connection is that IGBT1 and IGBT2 are connected in parallel, each IGBT is parallel with fly-wheel diode, when circuit voltage is timing, the electric current in loop forms path by the parallel diode of IGBT1, IGBT2, for thyristor provides forward voltage.When circuit voltage is when negative, the electric current in loop forms path by the parallel diode of IGBT2, IGBT1, for thyristor provides reverse voltage.Send trigger pulse by test platform to IGBT, when trigger pulse is high putting at ordinary times, IGBT conducting, in the time that trigger pulse is low level, IGBT turn-offs.In the time of IGBT conducting, loop is open-minded, and voltage is applied to thyristor anode, and in the time that turn-off in loop, voltage can not add to thyristor anode.
In order to describe test findings in detail, referring to accompanying drawing 2, be that TE is receiving the waveform that triggers thyristor after trigger pulse, the wherein waveform of A channel, first level is that thyristor triggers coded pulse, second is to stop coded pulse.To be produced by TE test platform.The waveform of B passage is the voltage waveform after the triggering of thyristor, and the waveform that this voltage is low-voltage test, is to be produced by the circuit in accompanying drawing 1.Visible, after receiving triggering coded pulse, TE can trigger thyristor.Realize the needed condition of thyristor valves low pressure test (LPT), can meet this test.
Fig. 3 is the waveform of thyristor convalescence protection test.Wherein A channel is the trigger pulse that TE sends to impulse voltage generator, and impulse voltage generator produces High Voltage Impulse Waveform after receiving this pulse, and in the time that TE detects that this surge voltage is greater than protection value, thyristor protection triggers.
Above by special embodiment content description the present invention, but those skilled in the art also can recognize the multiple possibility of modification and optional embodiment, for example, by combining and/or change the feature of single embodiment.Therefore, be understandable that these modification and optional embodiment will be considered as included in the present invention, scope of the present invention is enclosed invention claims and coordinator restriction thereof only.
Claims (4)
1. a thyristor level test method for novel converter valve module, is characterized in that:
(1) hookup comprises that insulated gate bipolar translator power tube IGBT, impulse voltage generator and the test platform of AC power, alternating current filter, disconnector, pressure regulator, isolating transformer, current-limiting resistance, differential concatenation form, in circuit, AC power is connected with alternating current filter AF, object is in order to obtain good alternating voltage waveform, AC power is connected with disconnector, provides on-off circuit to circuit, power supply is connected with pressure regulator by disconnector, the output terminal of pressure regulator is connected with the input end of isolating transformer, by adjusting the voltage of pressure regulator, adjust the output voltage of transformer, the output terminal of isolating transformer is connected with current-limiting resistance, effect is that the electric current of limit circuit is not excessive, thereby avoid in defective loop other components and parts, the output terminal of current-limiting resistance is connected with insulated gate bipolar translator power tube IGBT, the output terminal of insulated gate bipolar translator power tube IGBT is connected with thyristor level test product, object is for turning on and off by control insulated gate bipolar translator power tube IGBT, control the voltage waveform that is applied to thyristor two ends, the output terminal of impulse voltage generator is connected with thyristor level test product, high-pressure side is connected on thyristor anode, low pressure end is connected with thyristor negative electrode, and ground connection, effect is for thyristor is applied to surge voltage,
(2) connected mode of the insulated gate bipolar translator power tube IGBT of the differential concatenation described in is that the emitter of the first insulated gate bipolar translator power tube IGBT1 is connected with the emitter of the second insulated gate bipolar translator power tube IGBT2, each insulated gate bipolar translator power tube IGBT is parallel with fly-wheel diode, when circuit voltage is timing, electric current in loop forms path by the parallel diode of the first insulated gate bipolar translator power tube IGBT1 and the second insulated gate bipolar translator power tube IGBT2, for thyristor provides forward voltage; When circuit voltage is when negative, the electric current in loop forms path by the parallel diode of the second insulated gate bipolar translator power tube IGBT2 and the first insulated gate bipolar translator power tube IGBT1, for thyristor provides reverse voltage; Send trigger pulse by test platform to insulated gate bipolar translator power tube IGBT, in the time that trigger pulse is high level, insulated gate bipolar translator power tube IGBT conducting, in the time that trigger pulse is low level, insulated gate bipolar translator power tube IGBT turn-offs; In the time of insulated gate bipolar translator power tube IGBT conducting, loop is open-minded, and voltage is applied to thyristor anode, and in the time that turn-off in loop, voltage can not add to thyristor anode.
2. the method for claim 1, it is characterized in that described impulse voltage generator adopts photoelectricity triggering mode, in the time receiving the triggering firing pulse of test platform transmission, impulse voltage generator triggers igniting, make the breakdown electric discharge of ball gap of impulse voltage generator, High Voltage Impulse Waveform is applied to thyristor two ends.
3. method as claimed in claim 2, it is characterized in that described test platform is by being connected with AC power supply, by alternating current filter, obtain the synchronous working signal for test platform work, send trigger pulse by built-in system to the circuit board TE of thyristor level, and accept its return pulse.
4. method as claimed in claim 3, it is characterized in that described thyristor level test product comprises the circuit board TE of damping circuit, the equal hydraulic circuit of direct current, thyristor and thyristor level, damping circuit comprises damping resistance and damping capacitor, and the equal hydraulic circuit of direct current comprises two direct current equalizing resistance series connection.
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| CN201010512418.2A CN102012481B (en) | 2010-10-12 | 2010-10-12 | Thyristor level test method for novel converter valve module |
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| CN201010512418.2A CN102012481B (en) | 2010-10-12 | 2010-10-12 | Thyristor level test method for novel converter valve module |
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| CN113489334B (en) * | 2021-07-09 | 2023-03-28 | 北方工业大学 | High-voltage direct-current converter based on secondary side active loop and control method thereof |
| CN115015729B (en) * | 2022-06-30 | 2024-03-22 | 中国电力科学研究院有限公司 | Test loop, method and system for checking performance of thyristor converter valve and damping loop thereof |
| CN116381386B (en) * | 2023-04-04 | 2024-04-02 | 北京龙腾蓝天科技有限公司 | Comprehensive testing system and method for universal high-voltage direct-current transmission converter valve |
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