CN111273096B - Electric test device of thyristor valve and power supply device thereof - Google Patents
Electric test device of thyristor valve and power supply device thereof Download PDFInfo
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- CN111273096B CN111273096B CN201811474356.3A CN201811474356A CN111273096B CN 111273096 B CN111273096 B CN 111273096B CN 201811474356 A CN201811474356 A CN 201811474356A CN 111273096 B CN111273096 B CN 111273096B
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Abstract
The application discloses electric test device of thyristor valve and power supply unit thereof, this power supply unit specifically includes first converter transformer, second converter transformer, first smoothing reactor, second smoothing reactor, first 6 pulsation rectifier bridges, second 6 pulsation rectifier bridges, first isolating valve, second isolating valve, first switch, second switch, third switch, fourth switch, fifth switch, sixth switch, seventh switch, eighth switch, twelfth switch, thirteenth switch, fourteenth switch, fifteenth switch, sixteenth switch, seventeenth switch, eighteenth switch, twenty-second switch, twenty-third switch and twenty-fourth switch. When a 6-pulse output request or a 12-pulse output request is received, the corresponding switch is controlled to be closed, and the connection mode of the secondary coil of the second converter transformer is controlled, so that the purpose of testing the thyristor valve to be detected in a 6-pulse rectification mode or a 12-pulse rectification mode can be achieved.
Description
Technical Field
The present application relates to the field of power electronics technologies, and more particularly, to an electrical testing apparatus for a thyristor valve and a power supply apparatus thereof.
Background
With the construction of high-voltage direct-current transmission engineering and the maturity of high-voltage static reactive compensation technology, various thyristor valves are widely applied, and the performance of the thyristor valves directly influences the safety and reliability of the operation of a high-voltage direct-current transmission system and a high-voltage alternating-current transmission system. Therefore, the performance of the thyristor valve applied to the system must be examined, and how to build a suitable detection loop meeting the electrical test requirements of various thyristor valves is a hot problem of current test technology research.
The operation test is used as an important test item of the electric test of the thyristor valve, and aims to examine the endurance capacity of the thyristor valve under the action of large current and high voltage under various working conditions. When the thyristor valve is tested, in order to meet the requirements of different thyristor valves for testing at different test parameters, a power supply device in an electrical testing device of the thyristor valve needs to adopt a 6-pulse rectifier bridge mode or a 12-pulse rectifier bridge mode, otherwise, the testing requirements cannot be met.
Disclosure of Invention
In view of this, the present application provides an electrical testing apparatus for a thyristor valve and a power supply apparatus thereof, which can output a test current by using a 6-pulse rectifier bridge method or a 12-pulse rectifier bridge method, so as to meet a requirement for testing the thyristor valve by the testing apparatus.
In order to achieve the above object, the following solutions are proposed:
a power supply device is applied to an electrical test device of a thyristor valve, and comprises a first converter transformer, a second converter transformer, a first smoothing reactor, a second smoothing reactor, a first 6-pulse rectifier bridge, a second 6-pulse rectifier bridge, a first isolating valve, a second isolating valve, a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, an eighteenth switch, a twenty-second switch, a twenty-third switch and a twenty-fourteenth switch, wherein:
the first 6-pulse rectifier bridge comprises a first one bridge arm, a first two bridge arm, a first three bridge arm, a first four bridge arm, a first five bridge arm, a first six bridge arm, a first anode bus and a first cathode bus, wherein the first anode bus is respectively connected with an anode of the first four bridge arm, an anode of the first six bridge arm and an anode of the first two bridge arm, the anode of the first one bridge arm is connected with a cathode of the first four bridge arm, the anode of the first three bridge arm is connected with a cathode of the first six bridge arm, the anode of the first five bridge arm is connected with a cathode of the first two bridge arm, and the first cathode bus is respectively connected with a cathode of the first one bridge arm, a cathode of the first three bridge arm and a cathode of the first five bridge arm;
the fourth switch is arranged on the first cathode bus and is arranged between the cathode of the first bridge arm and the cathode of the first third bridge arm;
the phase A of the output end of the first converter transformer is connected with the anode of the first bridge arm through the second switch, the phase B is connected with the anode of the first third bridge arm, the phase C is connected with the anode of the first fifth bridge arm, and a secondary coil of the first converter transformer is in star connection;
one end of the first switch is connected with A of the output end of the first converter transformer, and the other end of the first switch is connected with one end of the first isolating valve and one end of the third switch; the other end of the third switch is connected with the negative electrode of the first bridge arm; the other end of the first isolation valve is connected with one end of the thyristor valve to be detected and one end of the second isolation valve;
one end of the first smoothing reactor is connected with the first cathode bus, and the other end of the first smoothing reactor is connected with one end of the fifth switch and one end of the seventh switch; the other end of the fifth switch is connected with the first anode bus; one end of the seventh switch is connected with one end of the twelfth switch, and the other end of the twelfth switch is connected with the other end of the thyristor valve to be detected and one end of the sixth switch, and is grounded; the other end of the sixth switch is connected with the first cathode bus;
the second 6-pulse rectifier bridge comprises a second first bridge arm, a second bridge arm, a second third bridge arm, a second fourth bridge arm, a second fifth bridge arm, a second sixth bridge arm, a second anode bus and a second cathode bus, wherein the second anode bus is respectively connected with an anode of the second fourth bridge arm, an anode of the second sixth bridge arm and an anode of the second bridge arm, the anode of the second first bridge arm is connected with a cathode of the second fourth bridge arm, the anode of the second third bridge arm is connected with a cathode of the second sixth bridge arm, the anode of the second fifth bridge arm is connected with a cathode of the second fifth bridge arm, and the second cathode bus is respectively connected with a cathode of the second first bridge arm, a cathode of the second third bridge arm and a cathode of the second fifth bridge arm;
the eighteenth switch is arranged on the second cathode bus and is arranged between the cathode of the second first bridge arm and the cathode of the second third bridge arm;
the phase A of the output end of the second converter transformer is connected with the anode of the second first bridge arm through the twenty-four switch, the phase C is connected with the anode of the second third bridge arm, and the phase B is connected with the anode of the second fifth bridge arm;
one end of the second smoothing reactor is connected with the second anode bus, the other end of the second smoothing reactor is connected with one end of the sixteenth switch and one end of the seventeenth switch, the other end of the seventeenth switch is connected with the second cathode bus, and the other end of the sixteenth switch is connected with the other end of the seventh switch;
one end of the twenty-third switch is connected with a of the output end of the second converter transformer, the other end of the twenty-second switch is connected with one end of the twenty-second switch, one end of the fifteenth switch and one end of the eighth switch, the other end of the twenty-second switch is connected with the cathode of the second bridge arm, the other end of the fifteenth switch is connected with the other end of the second isolating valve, and the eighth switch is connected with the first anode bus;
the anode of the second bridge arm is also connected with one end of a fourteenth switch, the other end of the fourteenth switch is connected with one end of a thirteenth switch and the other end of the seventh switch, and the other end of the thirteenth switch is connected with the anode of the first bridge arm;
the first isolation valve comprises a ninth switch, a tenth switch, an eleventh switch, a first thyristor and a first thyristor, the anode of the first thyristor is connected with the other end of the first switch and one end of the ninth switch, the other end of the ninth switch is connected with the cathode of the first thyristor and one end of the eleventh switch, the other end of the eleventh switch is connected with one end of the thyristor valve to be detected and one end of the tenth switch, and the other end of the tenth switch is connected with the cathode of the first thyristor and the anode of the first thyristor;
the second isolation valve comprises a nineteenth switch, a twentieth switch, a twenty-first switch, a second thyristor and a second thyristor, one end of the twentieth switch is connected with one end of the thyristor valve to be detected and one end of the nineteenth switch, the other end of the nineteenth switch is connected with the anode of the second thyristor and the cathode of the second thyristor, the cathode of the second thyristor is connected with one end of the twenty-first switch, and the other end of the twenty-first switch is connected with the anode of the second thyristor and the other end of the fifteenth switch;
the power supply device is used for responding to a 6-pulse output request, controlling the second switch, the third switch, the fifth switch, the sixth switch, the eleventh switch, the twelfth switch, the fifteenth switch, the sixteenth switch, the seventeenth switch, the twentieth switch, the twenty-second switch and the twenty-fourth switch to be in a closed state, and controlling a secondary coil of the second converter transformer to be in a star connection mode, so that the power supply device outputs a test current to the thyristor valve to be detected in a 6-pulse rectification mode;
the power supply device is further configured to respond to a 12-pulse output request, control the second switch, the third switch, the sixth switch, the seventh switch, the eighth switch, the eleventh switch, the sixteenth switch, the eighteenth switch, the twenty-second switch, and the twenty-fourth switch to be turned on and off, and control a secondary coil of the second converter transformer to be in a delta connection manner, so that the power supply device outputs a test current to the thyristor valve to be detected in a 12-pulse rectification manner.
Optionally, the power supply device is further configured to control the first switch, the fourth switch, the fifth switch, the ninth switch, the tenth switch, the twelfth switch, the thirteenth switch, the fourteenth switch, the fifteenth switch, the seventeenth switch, the eighteenth switch, the nineteenth switch, the twenty-first switch, and the twenty-third switch to be closed in response to a bidirectional current output request, and control the secondary winding of the second converter transformer to be in a star connection.
Optionally, the primary coil of the first converter transformer and the primary coil of the second converter transformer are both in a star connection manner or a delta connection manner.
An electrical test device for a thyristor valve is provided with the power supply device.
It can be seen from the foregoing technical solutions that the present application discloses an electrical test device for a thyristor valve and a power supply device thereof, where the power supply device specifically includes a first converter transformer, a second converter transformer, a first smoothing reactor, a second smoothing reactor, a first 6-pulse rectifier bridge, a second 6-pulse rectifier bridge, a first isolation valve, a second isolation valve, a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, an eighteenth switch, a twenty-second switch, a twenty-third switch, and a twenty-fourth switch. When a 6-pulse output request or a 12-pulse output request is received, the corresponding switch is controlled to be closed, and the connection mode of the secondary coil of the second converter transformer is controlled, so that the purpose of testing the thyristor valve to be detected in a 6-pulse rectification mode or a 12-pulse rectification mode can be achieved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a circuit diagram of a power supply device according to an embodiment of the present application;
fig. 2 is a circuit diagram of another power supply device according to an embodiment of the present application;
fig. 3 is a circuit diagram of another power supply device according to an embodiment of the present application;
fig. 4 is a circuit diagram of another power supply device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example one
Fig. 1 is a circuit diagram of a power supply device according to an embodiment of the present application.
As shown in fig. 1, the power supply device provided in this embodiment is applied to an electrical test device for testing a thyristor valve Vt to be tested, and includes a first converter transformer T1, a second converter transformer T2, a first smoothing reactor L1, a second smoothing reactor L2, a first 6-ripple rectifier bridge B1, a second 6-ripple rectifier bridge B2, a first isolation valve V1, a second isolation valve V2, a first switch K1, a second switch K2, a third switch K3, a fourth switch K4, a fifth switch K5, a sixth switch K6, a seventh switch K7, an eighth switch K8, a twelfth switch K112, a thirteenth switch K13, a fourteenth switch K14, a fifteenth switch K15, a sixteenth switch K16, a seventeenth switch K17, an eighteenth switch K18, a twenty-second switch K22, a twenty-fourth switch K24, and a twenty-fourth switch K24.
The primary coil of the first converter transformer and the primary coil of the second converter transformer have the same structure, that is, both are connected in a delta connection manner or a star connection manner, and this embodiment takes the same star connection manner as an example. When the primary coils of the two converter transformers are both star-connected, the secondary coil of the first converter transformer is also star-connected.
The first isolation valve comprises a ninth switch K9, a tenth switch K10, an eleventh switch K11, a first thyristor V11 and a first thyristor V12; the second isolation valve comprises a nineteenth switch K19, a twentieth switch K20, a twenty-first switch K21, a second thyristor V21 and a second thyristor V22.
The first 6-pulse rectifier bridge comprises a first one-bridge arm 11, a first two-bridge arm 12, a first three-bridge arm 13, a first four-bridge arm 14, a first five-bridge arm 15, a first six-bridge arm 16, a first anode bus B11 and a first cathode bus B12, wherein the first anode bus is respectively connected with an anode of the first four-bridge arm, an anode of the first six-bridge arm and an anode of the first two-bridge arm, an anode of the first one-bridge arm is connected with a cathode of the first four-bridge arm, an anode of the first three-bridge arm is connected with a cathode of the first six-bridge arm, an anode of the first five-bridge arm is connected with a cathode of the first two-bridge arm, and the first cathode bus is respectively connected with a cathode of the first one-bridge arm, a cathode of the first three-bridge arm and a cathode of the first five-bridge arm.
The fourth switch is arranged on the first cathode bus and between the cathode of the first bridge arm and the cathode of the first third bridge arm
The phase A of the output end of the first converter transformer is connected with the anode of the first bridge arm through the second switch, the phase B is connected with the anode of the first third bridge arm, and the phase C is connected with the anode of the first fifth bridge arm.
One end of the first switch is connected with A of the output end of the first converter transformer, and the other end of the first switch is connected with one end of the first isolating valve and one end of the third switch; the other end of the third switch is connected with the negative electrode of the first bridge arm; the other end of the first isolating valve is connected with one end of the thyristor valve to be detected and one end of the second isolating valve.
One end of the first smoothing reactor is connected with the first cathode bus, and the other end of the first smoothing reactor is connected with one end of the fifth switch and one end of the seventh switch; the other end of the fifth switch is connected with the first anode bus; one end of the seventh switch is connected with one end of the twelfth switch, and the other end of the twelfth switch is connected with the other end of the thyristor valve to be detected and one end of the sixth switch, and is grounded; the other end of the sixth switch is connected with the first cathode bus.
The second 6-pulse rectifier bridge comprises a second first bridge arm 21, a second bridge arm 22, a second third bridge arm 23, a second fourth bridge arm 24, a second fifth bridge arm 25, a second sixth bridge arm 26, a second anode bus B21 and a second cathode bus B22, wherein the second anode bus is respectively connected with the anode of the second fourth bridge arm, the anode of the second sixth bridge arm and the anode of the second bridge arm, the anode of the second first bridge arm is connected with the cathode of the second fourth bridge arm, the anode of the second third bridge arm is connected with the cathode of the second sixth bridge arm, the anode of the second fifth bridge arm is connected with the cathode of the second bridge arm, and the second cathode bus is respectively connected with the cathode of the second first bridge arm, the cathode of the second third bridge arm and the cathode of the second fifth bridge arm.
And the eighteenth switch is arranged on the second cathode bus and is arranged between the cathode of the second first bridge arm and the cathode of the second third bridge arm.
And the phase A of the output end of the second converter transformer is connected with the anode of the second first bridge arm through a twenty-four switch, the phase C is connected with the anode of the second third bridge arm, and the phase B is connected with the anode of the second fifth bridge arm.
One end of the second smoothing reactor is connected with the second anode bus, the other end of the second smoothing reactor is connected with one end of the sixteenth switch and one end of the seventeenth switch, the other end of the seventeenth switch is connected with the second cathode bus, and the other end of the sixteenth switch is connected with the other end of the seventh switch.
One end of the twenty-third switch is connected with the A of the output end of the second converter transformer, the other end of the twenty-second switch is connected with one end of the twenty-second switch, one end of the fifteenth switch and one end of the eighth switch, the other end of the twenty-second switch is connected with the cathode of the second first bridge arm, the other end of the fifteenth switch is connected with the other end of the second isolating valve, and the eighth switch is connected with the first anode bus.
The anode of the second bridge arm is also connected with one end of a fourteenth switch, the other end of the fourteenth switch is connected with one end of a thirteenth switch and the other end of a seventh switch, and the other end of the thirteenth switch is connected with the anode of the first bridge arm.
The specific connection mode in the first isolation valve is as follows: the positive pole of the first thyristor is connected with the other end of the first switch and one end of the ninth switch, the other end of the ninth switch is connected with the negative pole of the first thyristor and one end of the eleventh switch, the other end of the eleventh switch is connected with one end of the thyristor valve to be detected and one end of the tenth switch, and the other end of the tenth switch is connected with the negative pole of the first thyristor and the positive pole of the first thyristor.
The specific connection mode of the second isolation valve is as follows: one end of the twentieth switch is connected with one end of the thyristor valve to be detected and one end of the nineteenth switch, the other end of the nineteenth switch is connected with the anode of the second thyristor and the cathode of the second thyristor, the cathode of the second thyristor is connected with one end of the twenty-first switch, and the other end of the twenty-first switch is connected with the anode of the second thyristor and the other end of the fifteenth switch.
When the thyristor valve to be detected is detected, a corresponding request may be sent to the power supply device, for example, a 6-pulse output request may be sent when a test current needs to be output to the thyristor valve to be detected in a 6-pulse rectification manner, and correspondingly, a 12-pulse rectification request may be sent when a test current needs to be output to the thyristor valve to be detected in a 12-pulse rectification manner.
When the power supply device responds to the 6-pulse output request, the second switch, the third switch, the fifth switch, the sixth switch, the eleventh switch, the twelfth switch, the fifteenth switch, the sixteenth switch, the seventeenth switch, the twentieth switch, the twenty-second switch and the twenty-fourth switch are controlled to be switched on and switched off, and except for the other switches, the other switches are in an off state; and controlling a secondary coil of the second converter transformer to be in a star connection mode so as to achieve the purpose that the power supply device outputs test current to the thyristor valve to be detected in a 6-pulse rectification mode.
In a case where the second switch, the third switch, the fifth switch, the sixth switch, the eleventh switch, the twelfth switch, the fifteenth switch, the sixteenth switch, the seventeenth switch, the twentieth switch, the twenty-second switch, and the twenty-fourth switch are closed, the circuit diagram of the power supply device provided in this embodiment may be simplified to the circuit diagram shown in fig. 2.
At the moment, the first converter transformer is connected with the 6-pulse rectifier bridge, the cathodes of the third bridge arm and the fifth bridge arm of the 6-pulse rectifier bridge are connected, and then connected with the first smoothing reactor, the other end of the first smoothing reactor is connected with a first anode bus of the 6-pulse rectifier bridge, the cathode of the first bridge arm of the 6-pulse rectifier bridge is connected with the anode of the first isolating valve (the first isolating valve works in a one-way valve mode), the cathode of the first isolating valve is connected with the anode of the thyristor valve to be detected, and the common cathode connection end of the first smoothing reactor, the third bridge arm and the fifth bridge arm of the 6-pulse rectifier bridge is connected with the cathode of the thyristor valve to be detected.
The second converter transformer is connected with the second 6 pulse rectifier bridge, the cathodes of the third bridge arm and the fifth bridge arm of the second 6 pulse rectifier bridge are connected, and then connected with the second smoothing reactor, the other end of the second smoothing reactor is connected with the second anode bus of the second 6 pulse rectifier bridge, the cathode of the first bridge arm of the second 6 pulse rectifier bridge is connected with the anode of the second isolation valve (the second isolation valve works in a one-way valve mode), the cathode of the second isolation valve is connected with the anode of the thyristor valve to be detected, and the common cathode connection end of the third bridge arm and the fifth bridge arm of the second 6 pulse rectifier bridge and the common cathode connection end of the second smoothing reactor and the third bridge arm and the fifth bridge arm of the second 6 pulse rectifier bridge are connected with the cathode of the thyristor valve to be detected. The trigger pulses of the first 6 pulse rectifier bridge and the second 6 pulse rectifier bridge are completely consistent, each bridge arm is sequentially conducted according to the sequence of 1, 2, 3, 4, 5, 6, 1 and 6 at an interval of every 60-degree electrical angle, and the first isolation valve, the second isolation valve and the thyristor valve to be detected are synchronously triggered according to the trigger pulse of the first bridge arm of the first 6 pulse rectifier bridge.
When the power supply device responds to the 12-pulse output request, the second switch, the third switch, the sixth switch, the seventh switch, the eighth switch, the eleventh switch, the sixteenth switch, the eighteenth switch, the twenty-second switch and the twenty-fourth switch are controlled to be switched on, and the other switches except the first switch are switched off; and controlling a secondary coil of the second converter transformer to be in a triangular connection mode so as to achieve the purpose that the power supply device outputs test current to the thyristor valve to be detected in a 12-pulse rectification mode.
In a case where the second switch, the third switch, the sixth switch, the seventh switch, the eighth switch, the eleventh switch, the sixteenth switch, the eighteenth switch, the twenty-second switch, and the twenty-fourth switch are closed, the circuit diagram of the power supply device provided in this embodiment may be simplified to the circuit diagram shown in fig. 3.
At the moment, the first converter transformer is connected with the first 6 pulse rectifier bridge, the cathodes of the third bridge arm and the fifth bridge arm of the first 6 pulse rectifier bridge are connected, and then connected with the first smoothing reactor, the cathode of the first bridge arm of the first 6 pulse rectifier bridge is connected with the anode of the first isolating valve (the first isolating valve works in a one-way valve mode), the cathode of the first isolating valve is connected with the anode of the thyristor valve to be detected, the common-cathode connecting end of the first smoothing reactor, the third bridge arm and the fifth bridge arm of the first 6 pulse rectifier bridge is connected with the cathode of the thyristor valve to be detected, and the first anode bus of the first 6 pulse rectifier bridge is connected with the first cathode bus of the first 6 pulse rectifier bridge.
And a second common-anode bus of the second 6-pulse rectifier bridge is connected with a second smoothing reactor, and the other end of the second smoothing reactor is connected with the first smoothing reactor. At the moment, the first isolation valve operates in a one-way valve mode, the trigger pulse of each bridge arm of the second 6-pulse rectifier bridge lags behind the trigger pulse of each bridge arm of the first 6-pulse rectifier bridge by 30 electrical angles, and the first isolation valve and the thyristor valve to be detected are synchronously triggered according to the trigger pulse of the first bridge arm of the first 6-pulse rectifier bridge.
It can be seen from the foregoing technical solutions that the present application provides a power supply device, which is applied to an electrical test device of a thyristor valve, and specifically includes a first converter transformer, a second converter transformer, a first smoothing reactor, a second smoothing reactor, a first 6-pulse rectifier bridge, a second 6-pulse rectifier bridge, a first isolation valve, a second isolation valve, a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, an eighteenth switch, a twenty-second switch, a twenty-third switch, and a twenty-fourth switch. When a 6-pulse output request or a 12-pulse output request is received, the corresponding switch is controlled to be closed, and the connection mode of the secondary coil of the second converter transformer is controlled, so that the purpose of testing the thyristor valve to be detected in a 6-pulse rectification mode or a 12-pulse rectification mode can be achieved.
In addition, the power supply device provided in this embodiment is further configured to receive a bidirectional current output request input by a user, at this time, as shown in fig. 4, the power supply device controls the first switch, the fourth switch, the fifth switch, the ninth switch, the tenth switch, the twelfth switch, the thirteenth switch, the fourteenth switch, the fifteenth switch, the seventeenth switch, the eighteenth switch, the nineteenth switch, the twenty-first switch, and the twenty-third switch to be closed, except that other switches are in an open state; and controlling the secondary coil of the second converter transformer to be in a star connection mode. So that the power supply device outputs a test current of bidirectional current to the thyristor valve to be detected.
At this time, B, C of the first converter transformer is connected with the first 6-pulse rectifier bridge, A of the second converter transformer is connected with the first isolation valve (the first isolation valve works in a two-way valve mode), the other end of the first isolation valve is connected with the thyristor valve to be detected (the thyristor valve to be detected is a two-way valve), and the other end of the thyristor valve to be detected is connected with A of the first converter transformer after being grounded. And a first cathode bus of the first 6 pulse rectifier bridge is connected with a first smoothing reactor, and the other end of the first smoothing reactor is connected with a first anode bus of the first 6 pulse rectifier bridge.
The phase B and the phase C of the second converter transformer are connected with the second 6 pulsating rectifier bridge, the phase A of the second converter transformer is connected with a second isolation valve (the second isolation valve works in a two-way valve mode), the other end of the second isolation valve V2 is connected with a thyristor valve to be detected (a two-way valve), and the other end of the thyristor valve to be detected is connected with the phase A terminal of the second 6 pulsating rectifier bridge after being grounded. And a second cathode bus of the second 6-pulse rectifier bridge B2 is connected with a second smoothing reactor, and the other end of the second smoothing reactor is connected with a second anode bus of the second 6-pulse rectifier bridge. At the moment, the first isolation valve and the second isolation valve operate in a two-way valve mode, and the trigger pulses of the first 6 pulse rectifier bridge and the second 6 pulse rectifier bridge are completely consistent. A first thyristor of the first isolation valve V1, a second thyristor of the second isolation valve, and a forward valve (cathode grounding is defined as a forward valve, and anode grounding is defined as a reverse valve) of the thyristor valve to be detected are synchronously triggered according to the trigger pulse of the first bridge arm of the first 6-pulse rectifier bridge; and a first thyristor of the first isolation valve, a second thyristor of the second isolation valve and a reverse valve of the thyristor valve to be detected are synchronously triggered according to the trigger pulse of the fourth bridge arm of the first 6-pulse rectifier bridge.
Example two
The embodiment also provides an electrical test device of the thyristor valve, and the electrical test device is provided with the power supply device provided by the previous embodiment.
The power supply device specifically comprises a first converter transformer, a second converter transformer, a first smoothing reactor, a second smoothing reactor, a first 6-pulse rectifier bridge, a second 6-pulse rectifier bridge, a first isolation valve, a second isolation valve, a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, an eighteenth switch, a twenty-second switch, a twenty-third switch and a twenty-fourteenth switch. When a 6-pulse output request or a 12-pulse output request is received, the corresponding switch is controlled to be closed, and the connection mode of the secondary coil of the second converter transformer is controlled, so that the purpose of testing the thyristor valve to be detected in a 6-pulse rectification mode or a 12-pulse rectification mode can be achieved.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one of skill in the art, embodiments of the present application may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The technical solutions provided by the present application are introduced in detail, and specific examples are applied in the description to explain the principles and embodiments of the present application, and the descriptions of the above examples are only used to help understanding the method and the core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (4)
1. A power supply device is applied to an electrical test device of a thyristor valve, and is characterized by comprising a first converter transformer, a second converter transformer, a first smoothing reactor, a second smoothing reactor, a first 6-pulse rectifier bridge, a second 6-pulse rectifier bridge, a first isolation valve, a second isolation valve, a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, an eighteenth switch, a twenty-second switch, a twenty-third switch and a twenty-fourteenth switch, wherein:
the first 6-pulse rectifier bridge comprises a first one bridge arm, a first two bridge arm, a first three bridge arm, a first four bridge arm, a first five bridge arm, a first six bridge arm, a first anode bus and a first cathode bus, wherein the first anode bus is respectively connected with an anode of the first four bridge arm, an anode of the first six bridge arm and an anode of the first two bridge arm, the anode of the first one bridge arm is connected with a cathode of the first four bridge arm, the anode of the first three bridge arm is connected with a cathode of the first six bridge arm, the anode of the first five bridge arm is connected with a cathode of the first two bridge arm, and the first cathode bus is respectively connected with a cathode of the first one bridge arm, a cathode of the first three bridge arm and a cathode of the first five bridge arm;
the fourth switch is arranged on the first cathode bus and is arranged between the cathode of the first bridge arm and the cathode of the first third bridge arm;
the phase A of the output end of the first converter transformer is connected with the anode of the first bridge arm through the second switch, the phase B is connected with the anode of the first third bridge arm, the phase C is connected with the anode of the first fifth bridge arm, and a secondary coil of the first converter transformer is in star connection;
one end of the first switch is connected with A of the output end of the first converter transformer, and the other end of the first switch is connected with one end of the first isolating valve and one end of the third switch; the other end of the third switch is connected with the negative electrode of the first bridge arm; the other end of the first isolation valve is connected with one end of the thyristor valve to be detected and one end of the second isolation valve;
one end of the first smoothing reactor is connected with the first cathode bus, and the other end of the first smoothing reactor is connected with one end of the fifth switch and one end of the seventh switch; the other end of the fifth switch is connected with the first anode bus; one end of the seventh switch is connected with one end of the twelfth switch, and the other end of the twelfth switch is connected with the other end of the thyristor valve to be detected and one end of the sixth switch, and is grounded; the other end of the sixth switch is connected with the first cathode bus;
the second 6-pulse rectifier bridge comprises a second first bridge arm, a second bridge arm, a second third bridge arm, a second fourth bridge arm, a second fifth bridge arm, a second sixth bridge arm, a second anode bus and a second cathode bus, wherein the second anode bus is respectively connected with an anode of the second fourth bridge arm, an anode of the second sixth bridge arm and an anode of the second bridge arm, the anode of the second first bridge arm is connected with a cathode of the second fourth bridge arm, the anode of the second third bridge arm is connected with a cathode of the second sixth bridge arm, the anode of the second fifth bridge arm is connected with a cathode of the second fifth bridge arm, and the second cathode bus is respectively connected with a cathode of the second first bridge arm, a cathode of the second third bridge arm and a cathode of the second fifth bridge arm;
the eighteenth switch is arranged on the second cathode bus and is arranged between the cathode of the second first bridge arm and the cathode of the second third bridge arm;
the phase A of the output end of the second converter transformer is connected with the anode of the second first bridge arm through the twenty-four switch, the phase C is connected with the anode of the second third bridge arm, and the phase B is connected with the anode of the second fifth bridge arm;
one end of the second smoothing reactor is connected with the second anode bus, the other end of the second smoothing reactor is connected with one end of the sixteenth switch and one end of the seventeenth switch, the other end of the seventeenth switch is connected with the second cathode bus, and the other end of the sixteenth switch is connected with the other end of the seventh switch;
one end of the twenty-third switch is connected with a of the output end of the second converter transformer, the other end of the twenty-second switch is connected with one end of the twenty-second switch, one end of the fifteenth switch and one end of the eighth switch, the other end of the twenty-second switch is connected with the cathode of the second bridge arm, the other end of the fifteenth switch is connected with the other end of the second isolating valve, and the eighth switch is connected with the first anode bus;
the anode of the second bridge arm is also connected with one end of a fourteenth switch, the other end of the fourteenth switch is connected with one end of a thirteenth switch and the other end of the seventh switch, and the other end of the thirteenth switch is connected with the anode of the first bridge arm;
the first isolation valve comprises a ninth switch, a tenth switch, an eleventh switch, a first thyristor and a first thyristor, the anode of the first thyristor is connected with the other end of the first switch and one end of the ninth switch, the other end of the ninth switch is connected with the cathode of the first thyristor and one end of the eleventh switch, the other end of the eleventh switch is connected with one end of the thyristor valve to be detected and one end of the tenth switch, and the other end of the tenth switch is connected with the cathode of the first thyristor and the anode of the first thyristor;
the second isolation valve comprises a nineteenth switch, a twentieth switch, a twenty-first switch, a second thyristor and a second thyristor, one end of the twentieth switch is connected with one end of the thyristor valve to be detected and one end of the nineteenth switch, the other end of the nineteenth switch is connected with the anode of the second thyristor and the cathode of the second thyristor, the cathode of the second thyristor is connected with one end of the twenty-first switch, and the other end of the twenty-first switch is connected with the anode of the second thyristor and the other end of the fifteenth switch;
the power supply device is used for responding to a 6-pulse output request, controlling the second switch, the third switch, the fifth switch, the sixth switch, the eleventh switch, the twelfth switch, the fifteenth switch, the sixteenth switch, the seventeenth switch, the twentieth switch, the twenty-second switch and the twenty-fourth switch to be in a closed state, and controlling a secondary coil of the second converter transformer to be in a star connection mode, so that the power supply device outputs a test current to the thyristor valve to be detected in a 6-pulse rectification mode;
the power supply device is further configured to respond to a 12-pulse output request, control the second switch, the third switch, the sixth switch, the seventh switch, the eighth switch, the eleventh switch, the sixteenth switch, the eighteenth switch, the twenty-second switch, and the twenty-fourth switch to be turned on and off, and control a secondary coil of the second converter transformer to be in a delta connection manner, so that the power supply device outputs a test current to the thyristor valve to be detected in a 12-pulse rectification manner.
2. The power supply apparatus according to claim 1, wherein said power supply apparatus is further configured to control said first switch, said fourth switch, said fifth switch, said ninth switch, said tenth switch, said twelfth switch, said thirteenth switch, said fourteenth switch, said fifteenth switch, said seventeenth switch, said eighteenth switch, said nineteenth switch, said twenty-first switch, and said twenty-third switch to be closed in response to a bidirectional current output request, and to control a secondary coil of said second converter transformer to be star-connected.
3. The power supply apparatus according to claim 1, wherein the primary coil of the first converter transformer and the primary coil of the second converter transformer are both star-connected or delta-connected.
4. An electrical testing apparatus for a thyristor valve, characterized in that a power supply apparatus according to any one of claims 1 to 3 is provided.
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| CN201811474356.3A CN111273096B (en) | 2018-12-04 | 2018-12-04 | Electric test device of thyristor valve and power supply device thereof |
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| CN201811474356.3A CN111273096B (en) | 2018-12-04 | 2018-12-04 | Electric test device of thyristor valve and power supply device thereof |
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