CN116068361B - Alternating current test system - Google Patents
Alternating current test system Download PDFInfo
- Publication number
- CN116068361B CN116068361B CN202310352953.3A CN202310352953A CN116068361B CN 116068361 B CN116068361 B CN 116068361B CN 202310352953 A CN202310352953 A CN 202310352953A CN 116068361 B CN116068361 B CN 116068361B
- Authority
- CN
- China
- Prior art keywords
- phase
- voltage
- power supply
- frequency power
- variable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2601—Apparatus or methods therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2607—Circuits therefor
- G01R31/2608—Circuits therefor for testing bipolar transistors
Abstract
The invention discloses an alternating current test system, which comprises a hardware module and a multi-mode switching circuit, wherein the hardware module comprises a high-voltage power distribution unit, a power control unit, a low-voltage power distribution unit and an insulation test platform, and the high-voltage power distribution unit is connected with the low-voltage power distribution unit through the power control unit; the multi-mode switching circuit comprises a single-phase output circuit, a two-phase or three-phase parallel output circuit and a three-phase output circuit, and the three circuits realize the mutual switching of the circuits by changing external wiring and a control method; the alternating current test system has large capacity, single-phase maximum test current not less than 1000A, three-phase parallel output capacity, adjustable output voltage of 0-14.5kV and frequency of 0-60Hz, and three working modes which can be switched, and can be connected into a test platform for testing according to different rated current and wiring modes of a tested product.
Description
Technical Field
The invention relates to the technical field of low-frequency power transmission of power electronics, in particular to an alternating current test system.
Background
Before the power electronic technology is mature, parameters such as voltage, power, frequency and the like of a power transmission line cannot be accurately controlled, flexible control of power grid parameters is realized by the flexible technology, and flexibility and stability of a power system are improved. The weakness of the industrial frequency high-voltage alternating current transmission is that the loss of the long-distance large-capacity transmission is high, the direct current transmission can only be point-to-point, and the flexible low-frequency transmission technology is generated for simultaneously solving the disadvantages of the two transmission technologies. The low frequency power transmission is between the power frequency ac power transmission and the dc power transmission, and the ac power transmission is performed at a frequency of between 0 to 50Hz (typically 15 to 20 Hz). The flexible low-frequency alternating current transmission technology is a novel transmission technology adopting a turn-off power electronic device and a modularized multi-level topology. The technology has the advantages of power frequency alternating current transmission and flexible direct current transmission, and is widely focused on the fields of remote transmission, offshore wind power transmission and urban power grid related fields.
The low-frequency converter valve is used as core equipment for low-frequency power transmission, and the performance and quality of the product are particularly important. The low-frequency converter valve is the same as SVG product-dynamic reactive compensation and harmonic wave treatment device, and is also a power electronic product based on full-control type power device IGBT for switch control. However, the two have certain differences in appearance, voltage and current, frequency, working principle and other characteristics.
Disclosure of Invention
The invention is provided in view of the problem that the prior SVG products have differences in characteristics such as voltage, current, frequency, working principle and the like.
Accordingly, it is an object of the present invention to provide an ac test system, which aims at: the alternating current test system has large capacity, adjustable frequency and voltage, can switch a plurality of modes, is suitable for testing full-bridge IGBT products of various sizes, and can be used for carrying out a minimum direct current voltage test, a maximum current continuous operation capability test, a maximum voltage continuous operation capability test, a loss measurement test, a power module anti-interference test, a fault bypass test and a bypass switch false-closing test.
In order to solve the technical problems, the invention provides the following technical scheme: the high-voltage power distribution system comprises a hardware module, a power supply module and a power supply module, wherein the hardware module comprises a high-voltage power distribution unit, a power supply control unit and a low-voltage power distribution unit, and the high-voltage power distribution unit is connected with the low-voltage power distribution unit through the power supply control unit;
the multi-mode switching circuit comprises a single-phase output circuit, a two-phase or three-phase parallel output circuit and a three-phase output circuit, and the three circuits can realize the mutual switching of the circuits by changing the external wiring mode.
As a preferred embodiment of the ac test system according to the present invention, wherein: the power supply control unit comprises a high-voltage variable-frequency power supply module, the input side of the high-voltage variable-frequency power supply module is respectively connected with the secondary winding of the phase-shifting transformer, and the output side of the high-voltage variable-frequency power supply module is connected with the low-voltage distribution unit;
the low-voltage distribution unit comprises at least two single-phase modules, a single-phase inductance voltage transformer, a current transformer, a circuit breaker and a human-computer interface, wherein the single-phase modules are sequentially connected in series and then are respectively connected with the single-phase inductance, the voltage transformer, the current transformer, the circuit breaker and the human-computer interface.
As a preferred embodiment of the ac test system according to the present invention, wherein: the single-phase output circuit is used for independently outputting three phases at the output side of the high-voltage variable-frequency power supply module, wherein the three phases are three independent single-phase variable-frequency power supplies at the moment, one end of the single-phase variable-frequency power supply is connected with the single-phase module, then the single-phase variable-frequency power supply is connected with the low-voltage end of a tested product through respective reactors and current transformers, and the single-phase output circuit is connected to the other end of the single-phase variable-frequency power supply through cables, and each single-phase variable-frequency power supply is not interfered with each other during operation.
As a preferred embodiment of the ac test system according to the present invention, wherein: when the output current of the single-phase output circuit does not meet the requirement of a tested product, connecting the positive poles of the output sides of the single-phase variable-frequency power supplies respectively and the negative poles of the output sides of the single-phase variable-frequency power supplies respectively, then connecting the single-phase variable-frequency power supplies with the tested product, and carrying out two-phase or three-phase parallel connection to form the two-phase or three-phase parallel output circuit.
As a preferred embodiment of the ac test system according to the present invention, wherein: the three-phase output circuit is used for connecting three-phase cathodes of the single-phase variable frequency power supply, and when the positive three-phase output circuit outputs the positive three-phase, the three-phase output circuit is a set of three-phase opposite pushing platform, and the three-phase switch cabinet is used for testing a tested product by switching on and off simultaneously.
As a preferred embodiment of the ac test system according to the present invention, wherein: each phase of the output side of the high-voltage variable-frequency power supply module corresponds to one output switch cabinet and the isolation switch cabinet, the output switch cabinets of the corresponding phases are operated, split-phase unlocking can be achieved, and the knife isolation position of the isolation switch cabinet is adjusted, so that power supply switching among the single-phase output circuit, the two-phase or three-phase parallel output circuit and the three-phase output circuit is achieved.
As a preferred embodiment of the ac test system according to the present invention, wherein: the high-voltage variable-frequency power supply module is of an AC-DC-AC topological structure, the input side of the high-voltage variable-frequency power supply module is respectively connected with the secondary winding of the multiplexing phase-shifting transformer, the secondary output is 3n paths of independent windings with n being more than or equal to 2, and each phase of the output side is respectively connected with the single-phase module in series to realize the operation of a single-phase output circuit.
As a preferred embodiment of the ac test system according to the present invention, wherein: the three-phase voltage amplitude of the high-voltage variable-frequency power supply module is independently set, and the output voltage can change in a step mode so as to simulate high-voltage and low-voltage ride-through faults.
As a preferred embodiment of the ac test system according to the present invention, wherein: each phase module of the high-voltage variable-frequency power supply module is provided with redundancy, and when one module fails, the equipment can continue to operate.
As a preferred embodiment of the ac test system according to the present invention, wherein: the hardware module can output 0-14.5kV voltage, the frequency is adjustable between 0-60Hz, and when a single-phase output circuit is used for experiment, the maximum test current is not less than 1000A, and three-phase parallel output can be performed.
The invention has the beneficial effects that: (1) The alternating current test system adopted by the invention has large capacity, the single-phase maximum test current is not less than 1000A, the three-phase parallel output capability is realized, the variable frequency and the variable voltage can be realized, the output voltage is 0-14.5kV, and the frequency is 0-60 Hz; (2) The alternating current test system can switch three working modes, and can be connected with a test platform for testing according to the different rated currents and wiring modes of the tested product.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic diagram of a single-phase output circuit of an AC test system according to the present invention;
FIG. 2 is a schematic diagram of a two-phase or three-phase parallel output circuit of the AC test system of the present invention;
FIG. 3 is a schematic diagram of a three-phase output circuit of the AC test system of the present invention;
fig. 4 is a topology diagram of the electrical principle of the ac test system of the present invention as actually tested in the low frequency converter valve section.
Reference numerals illustrate: hardware module: 100; high voltage power distribution unit: 101; a power supply control unit: 102, a step of; low voltage power distribution unit: 103; a multimode switching circuit: 200; single-phase output circuit: 201; two-phase or three-phase parallel output circuit: 202; three-phase output circuit: 203, a base station; high-voltage variable-frequency power supply module: 102a; single-phase module: 103a; single-phase inductance: 103b; a voltage transformer: 103c; a current transformer: 103d; a circuit breaker: 103e; single-phase variable frequency power supply: 102a-1; output switch cabinet: 102a-2; isolation switch cabinet: 102a-3; phase-shifting transformer: 101c.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Further, in describing the embodiments of the present invention in detail, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of description, and the schematic is only an example, which should not limit the scope of protection of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
the hardware module 100 comprises a high-voltage power distribution unit 101, a power supply control unit 102, a low-voltage power distribution unit 103 and an insulation test platform, wherein the high-voltage power distribution unit 101 is connected with the low-voltage power distribution unit 103 through the power supply control unit 102;
the insulation test platform needs to be grounded, and an AC/DC withstand voltage test is carried out, so that the test result has no flashover phenomenon.
In summary, the insulation test platform used in the invention is used for supporting and running the tested product instead of an insulator, has universal adaptability to products of various sizes and types, and greatly improves the operability of production test workshop personnel.
The multimode switching circuit 200 includes a single-phase output circuit 201, a two-phase or three-phase parallel output circuit 202, and a three-phase output circuit 203, and the three circuits can be mutually switched by changing external wiring.
Further, the power control unit 102 includes a high-voltage variable-frequency power module 102a, the input side of the high-voltage variable-frequency power module 102a is connected with the secondary winding of the phase-shifting transformer, and the output side is connected with the low-voltage distribution unit 103;
the low-voltage distribution unit 103 comprises at least two single-phase modules 103a, a single-phase inductor 103b, a voltage transformer 103c, a current transformer 103d, a circuit breaker 103e and a man-machine interface, wherein the single-phase modules 103a are sequentially connected in series and then are respectively connected with the single-phase inductor 103b, the voltage transformer 103c, the current transformer 103d, the circuit breaker 103e and the man-machine interface.
Preferably, each phase at the output side of the high-voltage variable-frequency power supply module 102a corresponds to one output switch cabinet 102a-2 and one isolation switch cabinet 102a-3, and the output switch cabinet 102a-2 of the corresponding phase is operated to realize split-phase unlocking, adjust the knife isolation position of the isolation switch cabinet 102a-3 and realize power supply switching among the single-phase output circuit 201, the two-phase or three-phase parallel output circuit 202 and the three-phase output circuit 203;
the high-voltage variable-frequency power supply module 102a is of an AC-DC-AC topological structure, the input side of the high-voltage variable-frequency power supply module is respectively connected with the secondary winding of the multiplexing phase-shifting transformer 101c, the secondary output is 3n paths of n independent windings which are more than or equal to 2, each phase of the output side is connected with n single-phase modules 103a in series, and the operation of the single-phase output circuit 201 is realized;
the three-phase voltage amplitude of the high-voltage variable-frequency power supply module 102a is independently set, and the output voltage can be changed in a step-by-step manner so as to simulate high-voltage and low-voltage ride-through faults; each phase module of the high voltage variable frequency power supply module 102a is provided with redundancy, and when one module fails, the device can continue to operate.
The alternating current test system can output 0-14.5kV voltage, the frequency is adjustable between 0-60Hz, the single-phase non-parallel maximum test current is not less than 1000A, and three-phase parallel output can be performed; in the using process, the alternating current test system can perform power unit or valve section tests based on full-bridge IGBT alternating current products, such as a minimum direct current voltage test, a maximum current continuous operation capability test, a maximum voltage continuous operation capability test, an IGBT overcurrent turn-off test, a fault (high and low voltage) ride-through test, a loss measurement test, a power module anti-interference test, a fault bypass test, a bypass switch false-on test and the like.
The single-phase output circuit 201 outputs three phases on the output side of the high-voltage variable-frequency power supply module 102a independently, namely three independent single-phase variable-frequency power supplies 102a-1 at the moment, one end of the single-phase variable-frequency power supply 102a-1 is connected with the single-phase module 103a, then the single-phase variable-frequency power supply is connected with the low-voltage end of a tested product, and then the single-phase variable-frequency power supply is connected to the other end of the single-phase variable-frequency power supply 102a-1 through a cable;
furthermore, the high-voltage variable-frequency power supply module 102a can output a low-frequency mixing, and adopts three-phase power supply to independently output, one phase of the three-phase variable-frequency power supply is used for supplying power to a tested object, and the other two phases can be used for supplying power to other systems; when the three phases of the high-voltage variable-frequency power supply module 102a are respectively and independently output, the three phases are equivalent to three independent single-phase opposite-pushing platforms, the three independent platforms are not mutually interfered when working, and when not used, the switches of the respective branches are separated, so that the production and test efficiency can be improved.
Compared with the embodiment 1, as shown in fig. 4, the tester performs appearance inspection on the test system equipment, the cabinet body and the tested article, and after confirming that no abnormality exists, the tester performs secondary electricity on the test system equipment and checks to confirm whether the electricity is normal or not; monitoring normal starting of a human-computer interface, and ensuring that all devices of a test platform are connected normally and communicated normally; and confirming that the platform circuit breakers are all in separated positions, that the knife switch positions meet starting conditions, confirming the electrical parameters of the tested product, and preparing to start after confirming that the electrical parameters are correct.
Shaking the handcart of the switch cabinet B06 in fig. 4 from the test position to the working position; starting a test system by remote control of a human-computer interface background software, performing split-phase unlocking according to the test task requirement, and checking whether the output voltage and the state of a tested product are normal or not; after normal starting, firstly, short-time unlocking is executed, the state of the module is checked, and long-time unlocking is carried out after no abnormality exists; and after unlocking is abnormal, performing power test related operation according to parameter requirements of different engineering tests.
After the test is completed, a split-phase locking command is executed on the tested object, and the module is stopped; the test platform executes a split-phase locking command, and the variable-frequency power supply is stopped; pulling the output switch cabinet 102a-2 and the switch corresponding to the isolation switch cabinet 102a-3 to remotely control the shutdown test platform.
Therefore, the test system is monitored in real time through the human-computer interface, the system operates stably in the test process, and no false triggering or false message occurs to the power module; and the single-phase output circuit 201 can improve production and testing efficiency.
Compared with embodiment 2, when the output current of the single-phase output circuit 201 does not meet the requirement of the tested product, the positive electrode of the output side of each single-phase variable frequency power supply 102a-1 is connected, the negative electrode of the output side is connected, and then the single-phase variable frequency power supply is connected with the tested product, so as to form the two-phase or three-phase parallel output circuit 202; the output current of the single-phase opposite pushing platform can be improved, and the full-bridge IGBT product testing device is applied to full-bridge IGBT product testing scenes with high current requirements.
The three-phase output circuit 203 connects the three-phase negative poles of the output side of the single-phase variable frequency power supply 102a-1, and when the positive pole outputs three phases, a set of three-phase opposite pushing platforms are adopted at the moment, and the three-phase switch cabinet simultaneously opens and closes to test the tested product; a low voltage ride through test may be performed.
In summary, the alternating current test system can realize the switching of working modes, and can be connected to a test platform for testing according to the different rated currents and wiring modes of the tested products.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (6)
1. An ac test system, characterized in that: comprising the steps of (a) a step of,
the hardware module (100) comprises a high-voltage power distribution unit (101), a power supply control unit (102) and a low-voltage power distribution unit (103), wherein the high-voltage power distribution unit (101) is connected with the low-voltage power distribution unit (103) through the power supply control unit (102);
the multi-mode switching circuit (200) comprises a single-phase output circuit (201), a two-phase or three-phase parallel output circuit (202) and a three-phase output circuit (203), and the three circuits can realize mutual switching of the circuits by changing external wiring;
the power supply control unit (102) comprises a high-voltage variable-frequency power supply module (102 a), wherein the input side of the high-voltage variable-frequency power supply module (102 a) is respectively connected with a secondary winding of the phase-shifting transformer, and the output side of the high-voltage variable-frequency power supply module is connected with the low-voltage distribution unit (103);
the low-voltage distribution unit (103) comprises at least two single-phase modules (103 a), a single-phase inductor (103 b), a voltage transformer (103 c), a current transformer (103 d), a circuit breaker (103 e) and a man-machine interface, wherein the single-phase modules (103 a) are sequentially connected in series and then are respectively connected with the single-phase inductor (103 b), the voltage transformer (103 c), the current transformer (103 d), the circuit breaker (103 e) and the man-machine interface;
the single-phase output circuit (201) is used for independently outputting three independent single-phase variable-frequency power supplies (102 a-1) from three phases at the output side of the high-voltage variable-frequency power supply module (102 a), connecting one end of the single-phase variable-frequency power supply (102 a-1) with the single-phase module (103 a), connecting the low-voltage end of a tested product through respective reactors and current transformers, and connecting the low-voltage end of the tested product to the other end of the single-phase variable-frequency power supply (102 a-1) through cables, wherein each single-phase variable-frequency power supply (102 a-1) is not interfered with each other during operation;
when the output current of the single-phase output circuit (201) does not meet the requirement of a tested product, connecting the positive electrode of the output side of each single-phase variable frequency power supply (102 a-1) and the negative electrode of the output side of each single-phase variable frequency power supply, connecting the single-phase variable frequency power supply with the tested product, and connecting the single-phase variable frequency power supply with the tested product in parallel to form a two-phase or three-phase parallel output circuit (202);
the three-phase output circuit (203) is used for connecting a three-phase negative electrode of the output side of the single-phase variable frequency power supply (102 a-1), a positive three-phase is connected with a tested object phase, and the three-phase switch cabinet is used for testing the tested object by switching on and off simultaneously.
2. The ac test system of claim 1, wherein: each phase of the output side of the high-voltage variable-frequency power supply module (102 a) is correspondingly connected with an output switch cabinet (102 a-2) and an isolation switch cabinet (102 a-3), the output switch cabinet (102 a-2) of the corresponding phase is operated, split-phase unlocking can be achieved, and the knife isolation position of the isolation switch cabinet (102 a-3) is adjusted, so that power supply switching among the single-phase output circuit (201), the two-phase or three-phase parallel output circuit (202) and the three-phase output circuit (203) is achieved.
3. The ac test system of claim 2, wherein: the high-voltage variable-frequency power supply module (102 a) is of an AC-DC-AC topological structure, the input side of the high-voltage variable-frequency power supply module is respectively connected with the secondary winding of the multiplexing phase-shifting transformer (101 c), the secondary output is 3n paths of independent windings with n being more than or equal to 2, and each phase of the output side is respectively connected with the single-phase module (103 a) in series to realize the operation of the single-phase output circuit (201).
4. The ac testing system of claim 3, wherein: the three-phase voltage amplitude of the high-voltage variable-frequency power supply module (102 a) is independently set, and the output voltage can be changed in a step-by-step mode so as to simulate high-voltage and low-voltage ride-through faults.
5. The ac test system of claim 3 or 4, wherein: each phase of the high-voltage variable-frequency power supply module (102 a) is provided with redundancy, and when one module fails, the equipment can continue to operate.
6. The ac test system of claim 5, wherein: the hardware module (100) can output 0-14.5kV voltage, can adjust the frequency between 0-60Hz, and can perform three-phase parallel output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310352953.3A CN116068361B (en) | 2023-04-04 | 2023-04-04 | Alternating current test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310352953.3A CN116068361B (en) | 2023-04-04 | 2023-04-04 | Alternating current test system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116068361A CN116068361A (en) | 2023-05-05 |
| CN116068361B true CN116068361B (en) | 2023-07-11 |
Family
ID=86170094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310352953.3A Active CN116068361B (en) | 2023-04-04 | 2023-04-04 | Alternating current test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116068361B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10136649A (en) * | 1996-10-25 | 1998-05-22 | Fuji Electric Co Ltd | Ac power adjuster |
| JP2001245474A (en) * | 2000-02-28 | 2001-09-07 | Fuji Electric Co Ltd | Alternating power source device |
| CN101645646A (en) * | 2009-05-27 | 2010-02-10 | 荣信电力电子股份有限公司 | Method for realizing variable voltage level constant power output of converter |
| CN102611126A (en) * | 2012-03-13 | 2012-07-25 | 中国计量学院 | Switching method for flexible switching system based on single-phase inverter power source |
| CN104767395A (en) * | 2015-04-30 | 2015-07-08 | 山东航宇吉力电子有限公司 | Three-phase and single-phase output circuit of variable-frequency power source |
| CN109347112A (en) * | 2018-11-16 | 2019-02-15 | 中气电力装备有限公司 | A kind of Multifunctional three-phase regulator |
| CN211293119U (en) * | 2019-12-13 | 2020-08-18 | 深圳天顺智慧能源科技有限公司 | Batch on-load test SVG power unit circuit |
| CN111624457A (en) * | 2020-05-08 | 2020-09-04 | 南方电网科学研究院有限责任公司 | Simulation test method for thyristor module action characteristics |
| CN112039081A (en) * | 2020-07-10 | 2020-12-04 | 常州博瑞电力自动化设备有限公司 | Power supply system with high-power alternating-current power supply voltage stabilization and energy storage functions and control method |
| CN214409146U (en) * | 2021-01-03 | 2021-10-15 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Power module test platform |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI364155B (en) * | 2008-04-25 | 2012-05-11 | Delta Electronics Inc | Three-phase buck-boost power factor correction circuit and controlling method thereof |
-
2023
- 2023-04-04 CN CN202310352953.3A patent/CN116068361B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10136649A (en) * | 1996-10-25 | 1998-05-22 | Fuji Electric Co Ltd | Ac power adjuster |
| JP2001245474A (en) * | 2000-02-28 | 2001-09-07 | Fuji Electric Co Ltd | Alternating power source device |
| CN101645646A (en) * | 2009-05-27 | 2010-02-10 | 荣信电力电子股份有限公司 | Method for realizing variable voltage level constant power output of converter |
| CN102611126A (en) * | 2012-03-13 | 2012-07-25 | 中国计量学院 | Switching method for flexible switching system based on single-phase inverter power source |
| CN104767395A (en) * | 2015-04-30 | 2015-07-08 | 山东航宇吉力电子有限公司 | Three-phase and single-phase output circuit of variable-frequency power source |
| CN109347112A (en) * | 2018-11-16 | 2019-02-15 | 中气电力装备有限公司 | A kind of Multifunctional three-phase regulator |
| CN211293119U (en) * | 2019-12-13 | 2020-08-18 | 深圳天顺智慧能源科技有限公司 | Batch on-load test SVG power unit circuit |
| CN111624457A (en) * | 2020-05-08 | 2020-09-04 | 南方电网科学研究院有限责任公司 | Simulation test method for thyristor module action characteristics |
| CN112039081A (en) * | 2020-07-10 | 2020-12-04 | 常州博瑞电力自动化设备有限公司 | Power supply system with high-power alternating-current power supply voltage stabilization and energy storage functions and control method |
| CN214409146U (en) * | 2021-01-03 | 2021-10-15 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Power module test platform |
Non-Patent Citations (2)
| Title |
|---|
| 大功率交流机车变流器试验系统;刘盛强 等;《铁道机车与动车》(第12期);第46-48页 * |
| 某500 kV变电站换流变阀侧电压互感器故障机理分析;吴继平 等;《电工电气》(第4期);第35-38页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116068361A (en) | 2023-05-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Rao | Architecture of Nan'ao multi-terminal VSC-HVDC system and its multi-functional control | |
| CN110854925B (en) | One-time voltage-on synchronous nuclear phase inspection system and inspection method for electrical system | |
| CN104714132A (en) | Flexible direct current power transmission converter performance testing platform and control method thereof | |
| CN114167278B (en) | Flexible direct-current transmission voltage source converter valve test method and power supply device | |
| Xu et al. | Protection coordination of meshed MMC-MTDC transmission systems under DC faults | |
| CN109347134B (en) | Bipolar flexible direct-current power grid polar line electric main wiring system and online maintenance method | |
| Dorn et al. | Full-bridge VSC: An essential enabler of the transition to an energy system dominated by renewable sources | |
| CN109683106B (en) | Short circuit test system for different-capacity impact generator grid-connected power supply | |
| CN116760303B (en) | High-voltage direct-current transformer and fault redundancy control method thereof | |
| Jie et al. | System design of MMC VSC-HVDC demonstration project for windfarm connection | |
| CN116068361B (en) | Alternating current test system | |
| Berry et al. | Implementation of an active fault level monitoring system for distributed generation integration | |
| CN108680825B (en) | Island detection method based on comprehensive sequence impedance | |
| CN116599350A (en) | High-voltage direct-current transformer | |
| CN213585610U (en) | High-power synchronous motor starting system | |
| EP4184768A1 (en) | Converter and method of operating a converter | |
| CN211826314U (en) | Wind turbine generator system testing arrangement that is incorporated into power networks | |
| CN210898551U (en) | One-time pressure-on synchronous nuclear phase inspection system for electrical system | |
| CN113922407A (en) | Low-pressure pressurizing system of flexible direct current converting station and control method | |
| CN111123043A (en) | Wind turbine generator system testing arrangement that is incorporated into power networks | |
| CN220210263U (en) | Single-tide power electronic transformer capable of carrying out no-load voltage stabilization test | |
| Štumberger et al. | Medium-voltage distribution feeders in open-loop and closed-loop arrangement | |
| Pfendler et al. | Fault location dependency of short-circuit currents in MMC based meshed HVDC cable systems | |
| CN215728740U (en) | Converter station converter transformer short circuit test device | |
| CN211554269U (en) | High-power inverter testing platform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |