CN104714132A - Flexible direct current power transmission converter performance testing platform and control method thereof - Google Patents
Flexible direct current power transmission converter performance testing platform and control method thereof Download PDFInfo
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Abstract
The invention provides a flexible direct current power transmission converter performance testing platform and a control method thereof. The direct current side of a first modularized multi-level converter and the direct current side of a second modularized multi-level converter are connected in a back-to-back mode, and three phases of the alternating current side of the first modularized multi-level converter are connected with three phases of the alternating current side of the second modularized multi-level converter correspondingly, so that a power circulation pathway is formed; a test power source is in parallel connection with the direct current side of the first modularized multi-level converter and the direct current side of the second modularized multi-level converter and provides loss power for steady-state operation testing; a short circuit generator is in parallel connection with the direct current side of the first modularized multi-level converter and the direct current side of the second modularized multi-level converter. According to the testing platform and the control method thereof, the requirement for power grid capacity is low; meanwhile, the direct current side power supply mode is adopted in the testing platform, and therefore the single test power source is adopted for the whole platform. With regard to test items of the short circuit and over-current turn-off required by IEC standards, due to the fact that the basic structure of the platform is basically the same with that of practical engineering, the short circuit test and the over-current turn-off test can be set through the platform according to double-pole short-circuit faults in a practical flexible direct current power transmission system.
Description
Technical field
What the present invention relates to is a kind of system of high-voltage and high-power power electronic current transformer technical field of measurement and test, specifically a kind of flexible DC power transmission current transformer Testing Platform of a kind of modular multilevel and control method thereof.
Background technology
Technology of HVDC based Voltage Source Converter is the full-control type power device (IGBT based on voltage source converter VSC technology and gate electrode capable of switching off, IEGT) novel electric power transmission technology, compared with traditional HVDC Transmission Technology, have can connect weak AC system, power to passive network, improve the new forms of energy such as wind-powered electricity generation access electrical network penetrate the advantages such as power.Along with the development of recent domestic flexible direct current converter topology, its electric pressure and transmission line capability also constantly increase, and have started to be applied to China's backbone network system, and its stability and Immunity Performance have been enough to affect power system safety and stability and have run.Therefore flexible DC power transmission engineering all requires that current transformer carried out running test before construction, needs to carry out Tests at Steady State, short-circuit test and excess current turn off test according to IEC standard.It can thus be appreciated that the construction of test platform has become indispensable part in Technology of HVDC based Voltage Source Converter development.
Usually electrical network cannot be directly utilized to carry out total power test for the electric pressure of flexible DC power transmission current transformer and capacity, simple dependence test platform provides its equipment cost of experiment power supply of the even thousands of megawatts capacity of hundreds of megawatt will meet or exceed whole flexible DC power transmission engineering, cannot realize from engineering construction and cost angle at all.Therefore need design special test platform, ensureing on the basis that in test, current transformer operating mode is identical with Practical Project, less and can equipment cost be reduced to experiment power supply capacity requirement.To this by WU YANAN, Luo Xiang, in the patent " power ring test unit [P] .202230181U of flexible DC power transmission MMC valve Tests at Steady State; 2012 " of high punching application, a kind of steady-state operation test platform by two valve module parallel forms is proposed, by changing the modulation signal of two valve modules, make to produce high-power circulation therebetween, current transformer bridge arm current when being equivalent to steady-state operation in Practical Project.But this equipment only can carry out steady-state operation test, the short circuit of not mentioned IEC standard-required and overcurrent turn-off function test in document, and converter structure difference is larger in this device topological structure and practical engineering application, though equivalent bridge arm current when can produce steady-state operation, but its control strategy that adopts needs particular design, different from actual motion equipment, therefore also cannot carry out algorithm level test to adopted current transformer control strategy.
Summary of the invention
For defect of the prior art, the object of the invention is to the above-mentioned deficiency overcoming prior art, a kind of flexible DC power transmission current transformer Testing Platform is provided.
The present invention with the modular multi-level converter of progression less (be preferably 5 to 7 grades) for core, adopt the 1st modular multi-level converter, the 2nd modular multi-level converter with form connection back-to-back, form steady-state operation test platform, two current transformers work in constant dc power control mode respectively and determine alternating voltage control mode, identical with current transformer control mode in Practical Project, two AC side of converter are interconnected, therebetween form power circulation, test platform net capacity requires very low.Meanwhile, test platform adopts DC side power supply mode, and therefore whole system only adopts an experimental power supply.For the short circuit required by IEC standard and overcurrent turn-off function test event, because this platform basic structure is substantially identical with Practical Project, therefore this platform can arrange short circuit and overcurrent turn-off function test according to the bipolar short trouble of flexible direct current power transmission system in reality.This test platform can complete the test event of all running test tests of IEC and control algolithm level in sum.
According to a kind of flexible DC power transmission current transformer Testing Platform provided by the invention, comprising: the 1st modular multi-level converter, the 2nd modular multi-level converter, experiment power supply, short circuit generating means;
The DC side of the 1st modular multi-level converter, the 2nd modular multi-level converter connects back-to-back, and AC three-phase is connected respectively, and forms power ring circulation flow path;
Experiment power supply and the 1st modular multi-level converter, the 2nd modular multi-level converter DC side parallel, provide the loss power that steady-state operation is tested;
Short circuit generating means and the 1st modular multi-level converter, the 2nd modular multi-level converter DC side parallel.
Preferably, described 1st modular multi-level converter, the 2nd modular multi-level converter, all primarily of 6 valve sections through brachium pontis reactor, parallel with one anotherly again to connect and compose after series connection between two.
Preferably, described experiment power supply is formed primarily of three-phase uncontrollable rectifier bridge, DC voltage-stabilizing electric capacity, input AC isolating switch;
Three-phase uncontrollable rectifier bridge exchanges survey input end and is connected with electrical network through input AC isolating switch; Three-phase uncontrollable rectifier bridge DC side positive pole is connected with DC voltage-stabilizing capacitance cathode, is the DC output side positive pole of experiment power supply; Three-phase uncontrollable rectifier bridge DC side negative pole is connected with DC voltage-stabilizing electric capacity negative pole, is the DC output side negative pole of experiment power supply;
The DC output side of experiment power supply and the 1st modular multi-level converter, the 2nd modular multi-level converter DC side parallel.
Preferably, during steady-state operation test, the input AC breaker closing be connected with electrical network; When short-circuit test starts, first disconnect the input AC isolating switch be connected with electrical network.
Preferably, described short-circuit test device is composed in series primarily of thyristor valve and REgulatable reactor, by regulating REgulatable reactor numerical value, can limit the escalating rate of bipolar short-circuit test short circuit currents.
Preferably, described valve section is followed in series to form by the power cell of negligible amounts, and wherein, described negligible amounts is that exponential quantity is more than or equal to 5 and is less than or equal to 7, and described series connection successively refers to and is interconnected successively between the high-pressure side of different capacity unit and low pressure end.
Preferably, described power cell adopts the modular power unit of half-bridge structure, or adopts the modular power unit of full bridge structure.
Preferably, between the 1st modular multi-level converter, the 2nd modular multi-level converter, exchange active power, and work in constant dc power control mode respectively, determine alternating voltage control mode; Experiment power supply only provides loss power when the 1st modular multi-level converter, the 2nd modular multi-level converter steady-state operation.
According to the control method of a kind of above-mentioned flexible DC power transmission current transformer Testing Platform provided by the invention, comprise the steps:
Step 1: the input AC isolating switch of closed experiment power supply, slowly raises experiment power supply voltage to rated voltage, wherein, describedly slowly refers to according to given slope lifting experiment power supply voltage;
Step 2: unlock the 1st modular multi-level converter, run on and determine alternating voltage control mode, it is the 1st modular multi-level converter and the 2nd modular multi-level converter rating operating voltage value that the 1st AC side of converter voltage exports setting value;
Step 3: after the 1st modular multi-level converter output AC voltage amplitude and frequency stabilization, unlock the 2nd modular multi-level converter, increased wattage set-point gradually, until nominal operation power, completes IEC Tests at Steady State and determines power and determine the inspection of alternating voltage control strategy; In operation produce loss and supplemented by the parallel connection direct side of experiment power supply through the 1st modular multi-level converter and the 2nd modular multi-level converter; Wherein, the described set-point of increased wattage gradually refers to according to given slope lifting power set-point;
Step 4: treat that the 1st modular multi-level converter and the 2nd modular multi-level converter work are to thermal steady state, the input AC side isolating switch of open test power supply, after AC breaker open operation position to be entered returns, trigger the thyristor valve in short circuit generating means, cause the bipolar short circuit of the 1st modular multi-level converter, after 1st modular multi-level converter detects its brachium pontis excess current comprised, locking the 1st modular multi-level converter and the 2nd modular multi-level converter, make the 1st modular multi-level converter comprise the valve section short circuit current flow of brachium pontis.
Compared with prior art, the present invention has following beneficial effect:
1, in test platform, two modular multi-level converter AC A, B, C are corresponding is interconnected, during steady-state operation, 1st, active power is exchanged between the 2nd modular multi-level converter, experiment power supply only provides the 1st, the 2nd modular multi-level converter steady-state operation time loss power, test platform to power strength and capacity requirement low.
2, can complete IEC running test based on same test platform and control the checking of current transformer control strategy, to run control strategy identical with Practical Project, without the need to particular design test platform control algolithm.
3, test platform is applicable to the modular multi-level converter of the power cell of half-bridge structure and full bridge structure, and subjects area coverage is relatively extensive, and platform utilization factor is high.
4, test platform only needs an experimental power supply, and carry out complementary energy to power attenuation during current transformer steady-state operation, short-circuit current needed for short-circuit test is provided by capacitor in current transformer power unit.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is modular multi-level converter test platform topological structure schematic diagram;
Fig. 2 modular multi-level converter schematic diagram;
Fig. 3 is valve section schematic diagram;
Fig. 4 is power cell schematic diagram;
Fig. 5 is short circuit generating means schematic diagram.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
The invention provides a kind of flexible DC power transmission current transformer Testing Platform.Comprise: two three-phase modular multilevel current transformers, two DC filter, experiment power supply, short circuit generating meanss.Wherein: the 1st and the 2nd modular multi-level converter AC A, B, C phase is interconnected respectively, and the 1st modular multi-level converter positive pole and negative pole are connected with the 2nd modular multi-level converter positive pole and negative pole with DC filter L2 through DC filter L1 respectively.Experiment power supply AC is connected with electrical network, and experiment power supply DC output end both positive and negative polarity is connected with the 1st current transformer DC side both positive and negative polarity respectively.Short circuit generating means positive pole is connected with the 1st modular multilevel positive pole, and short circuit generating means negative pole is connected with the 1st modular multilevel negative pole.Described test platform adopts the 1st to be connected with form back-to-back with the 2nd modular multi-level converter, and the described 1st and the 2nd modular multi-level converter AC is interconnected, and forms power circulation therebetween, and the requirement of test platform net capacity is very low.Meanwhile, test platform adopts DC side power supply mode, and therefore whole system only adopts an experimental power supply.For the short circuit required by IEC standard and overcurrent turn-off function test event, because this platform basic structure is substantially identical with Practical Project, therefore this platform can arrange short circuit and overcurrent turn-off function test according to the bipolar short trouble of flexible direct current power transmission system in reality.
Below in conjunction with Fig. 1-Fig. 5 and specific embodiment, this experiment system design scheme is described in detail:
Composition graphs 1, test platform provided by the invention comprises the 1st modular multi-level converter, the 2nd modular multi-level converter, DC filter L1, DC filter L2, experiment power supply, short circuit generating means.Wherein: AC A, B, C phase of the 1st modular multi-level converter and the 2nd modular multi-level converter is interconnected respectively, and the 1st modular multi-level converter positive pole and negative pole are connected with the 2nd modular multi-level converter positive pole and negative pole through DC filter L1, DC filter L2 respectively.Experiment power supply AC is connected with electrical network, and experiment power supply DC output end both positive and negative polarity is connected with the 1st modular multi-level converter DC side both positive and negative polarity respectively.Short circuit generating means positive pole ("+") is connected with the 1st modular multilevel positive pole, and short circuit generating means negative pole ("-") is connected with the first modular multilevel negative pole.
The 1st described modular multi-level converter, the 2nd modular multi-level converter are as shown in Figure 2, all comprise and form standard three-phase Multilevel Inverters structure by 6 valve sections (comprising the 1st, 2,3,4,5,6 valve sections) and 6 brachium pontis reactors (comprising brachium pontis reactor L11, L12, L13, L14, L15, L16), be specially: 1-3 valve section low pressure end is connected with brachium pontis reactor L11, L12, L13 one end respectively, as current transformer DC side positive pole after the parallel connection of 1-3 valve section high-pressure side; 4-6 valve section high-pressure side is connected with brachium pontis reactor L14, L15, L16 one end respectively, as current transformer DC side negative pole after the parallel connection of 4-6 valve section low pressure end; The reactor L11 other end is connected for modular multi-level converter AC A phase with the reactor L14 other end, the reactor L12 other end is connected for modular multi-level converter AC B phase with the reactor L15 other end, the reactor L13 other end is connected with the reactor L16 other end for modular multi-level converter AC C phase.
Wherein said valve section as shown in Figure 3, by 5 power cells (comprise the 1st, 2,3,4,5 power cells) be composed in series.The high-pressure side of 1-5 power cell and low pressure end are connected respectively successively, and the high-pressure side of the 1st power cell is valve section high-pressure side, and the low pressure end of the 5th power cell is the low pressure end of valve section.Described series connection successively refers to and is interconnected successively between the high-pressure side of different capacity unit and low pressure end, the low pressure end of the 1st power cell connects the high-pressure side of the 2nd power cell, the low pressure end of the 2nd power cell connects the high-pressure side of the 3rd power cell, the low pressure end of the 3rd power cell connects the high-pressure side of the 4th power cell, and the low pressure end of the 4th power cell connects the high-pressure side of the 5th power cell.
Wherein said power cell as shown in Figure 4, is full bridge structure.Full bridge structure power cell entirely controls power device (comprising anti-paralleled diode) G1, G2, G3, G4 by four and capacitor forms.The E pole of rate device G1 is connected with the C pole of rate device G2, in parallel with capacitor C again, the E pole of power device G3 is connected with the C pole of power device G4, in parallel with capacitor again, the tie point of power device G1 and G2 is power cell high-pressure side P, and the tie point of power device G3, G4 is power cell low pressure end N.
Described two DC filter L1, L2 are direct current reactor.
Described experiment power supply is as shown in Fig. 1 pilot scale electrical verification source module, be made up of diode (D1 ~ D6) three-phase uncontrollable rectifier bridge, DC voltage-stabilizing electric capacity C1 and input AC isolating switch CB1, diode three-phase uncontrollable rectifier bridge AC input end A0, B0, C0 are connected with electrical network A, B, C tri-through input AC isolating switch CB1, diode three-phase uncontrollable rectifier bridge DC side positive pole is connected with DC voltage-stabilizing electric capacity C1 positive pole, is the positive pole of experiment power supply; Diode three-phase uncontrollable rectifier bridge DC side negative pole is connected with DC voltage-stabilizing electric capacity C1 negative pole, is the negative pole of experiment power supply.
As shown in Figure 5, be made up of thyristor controlled series compensation V4 and REgulatable reactor L0, V4 negative electrode is connected with L0 one end described short circuit generating means, and the L0 other end is the negative pole (-) of short circuit generating means, and V1 anode is the positive pole (+) of short circuit generating means.
The present embodiment control method comprises the following steps:
Step 1: closed experiment power supply AC circuit breaker CB1, slowly raises experiment power supply voltage to specified 22kV with the slope of 1kV/s.
Step 2: separate locking alternating voltage side the 1st modular multi-level converter, run on and determine alternating voltage control mode, it is current transformer rating operating voltage value 11kV that alternating voltage exports setting value;
Step 3: after AC voltage convertor output AC voltage amplitude undetermined and frequency stabilization, separate locking power side the 2nd current transformer, with the slope of 2MW/s increased wattage set-point gradually, until nominal operation power 30MW, complete IEC Tests at Steady State and determine power and determine the inspection of alternating voltage control strategy.In operation produce loss and supplemented through DC side by experiment power supply module.
Step 4: treat that current transformer work is to thermal steady state, open test capable AC side isolating switch CB1, after friendship CB1 open position returns, trigger the thyristor valve V4 in short circuit generating means, cause the bipolar short circuit of current transformer, after first modular multi-level converter detects brachium pontis excess current (current instantaneous value is more than 2.5kA), locking first and second Multilevel Inverters, makes the first module Multilevel Inverters brachium pontis 1-6 valve section short circuit current flow.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (9)
1. a flexible DC power transmission current transformer Testing Platform, is characterized in that, comprising: the 1st modular multi-level converter, the 2nd modular multi-level converter, experiment power supply, short circuit generating means;
The DC side of the 1st modular multi-level converter, the 2nd modular multi-level converter connects back-to-back, and AC three-phase is connected respectively, and forms power ring circulation flow path;
Experiment power supply and the 1st modular multi-level converter, the 2nd modular multi-level converter DC side parallel, provide the loss power that steady-state operation is tested;
Short circuit generating means and the 1st modular multi-level converter, the 2nd modular multi-level converter DC side parallel.
2. flexible DC power transmission current transformer Testing Platform according to claim 1, it is characterized in that, described 1st modular multi-level converter, the 2nd modular multi-level converter, all primarily of 6 valve sections through brachium pontis reactor, parallel with one anotherly again to connect and compose after series connection between two.
3. flexible DC power transmission current transformer Testing Platform according to claim 1, is characterized in that, described experiment power supply is formed primarily of three-phase uncontrollable rectifier bridge, DC voltage-stabilizing electric capacity, input AC isolating switch;
Three-phase uncontrollable rectifier bridge exchanges survey input end and is connected with electrical network through input AC isolating switch; Three-phase uncontrollable rectifier bridge DC side positive pole is connected with DC voltage-stabilizing capacitance cathode, is the DC output side positive pole of experiment power supply; Three-phase uncontrollable rectifier bridge DC side negative pole is connected with DC voltage-stabilizing electric capacity negative pole, is the DC output side negative pole of experiment power supply;
The DC output side of experiment power supply and the 1st modular multi-level converter, the 2nd modular multi-level converter DC side parallel.
4. flexible DC power transmission current transformer Testing Platform according to claim 3, is characterized in that, during steady-state operation test, and the input AC breaker closing be connected with electrical network; When short-circuit test starts, first disconnect the input AC isolating switch be connected with electrical network.
5. flexible DC power transmission current transformer Testing Platform according to claim 1, it is characterized in that, described short-circuit test device is composed in series primarily of thyristor valve and REgulatable reactor, by regulating REgulatable reactor numerical value, can limit the escalating rate of bipolar short-circuit test short circuit currents.
6. flexible DC power transmission current transformer Testing Platform according to claim 2, it is characterized in that, described valve section is followed in series to form by the power cell of negligible amounts, wherein, described negligible amounts is that exponential quantity is more than or equal to 5 and is less than or equal to 7, and described series connection successively refers to and is interconnected successively between the high-pressure side of different capacity unit and low pressure end.
7. flexible DC power transmission current transformer Testing Platform according to claim 6, is characterized in that, described power cell adopts the modular power unit of half-bridge structure, or adopts the modular power unit of full bridge structure.
8. flexible DC power transmission current transformer Testing Platform according to claim 1, it is characterized in that, exchange active power between 1st modular multi-level converter, the 2nd modular multi-level converter, and work in constant dc power control mode respectively, determine alternating voltage control mode; Experiment power supply only provides loss power when the 1st modular multi-level converter, the 2nd modular multi-level converter steady-state operation.
9. a control method for the flexible DC power transmission current transformer Testing Platform according to any one of claim 1 to 8, is characterized in that, comprise the steps:
Step 1: the input AC isolating switch of closed experiment power supply, slowly raises experiment power supply voltage to rated voltage, wherein, describedly slowly refers to according to given slope lifting experiment power supply voltage;
Step 2: unlock the 1st modular multi-level converter, run on and determine alternating voltage control mode, it is the 1st modular multi-level converter and the 2nd modular multi-level converter rating operating voltage value that the 1st modular multi-level converter AC voltage exports setting value;
Step 3: after the 1st modular multi-level converter output AC voltage amplitude and frequency stabilization, unlock the 2nd modular multi-level converter, increased wattage set-point gradually, until nominal operation power, completes IEC Tests at Steady State and determines power and determine the inspection of alternating voltage control strategy; In operation produce loss and supplemented by the parallel connection direct side of experiment power supply through the 1st modular multi-level converter and the 2nd modular multi-level converter; Wherein, the described set-point of increased wattage gradually refers to according to given slope lifting power set-point;
Step 4: treat that the 1st modular multi-level converter and the 2nd modular multi-level converter work are to thermal steady state, the input AC side isolating switch of open test power supply, after AC breaker open operation position to be entered returns, trigger the thyristor valve in short circuit generating means, cause the bipolar short circuit of the 1st modular multi-level converter, after 1st modular multi-level converter detects its brachium pontis excess current comprised, locking the 1st modular multi-level converter and the 2nd modular multi-level converter, make the 1st modular multi-level converter comprise the valve section short circuit current flow of brachium pontis.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834451A (en) * | 2010-05-07 | 2010-09-15 | 中国科学院电工研究所 | High-voltage back-to-back converter |
| CN102299644A (en) * | 2011-08-23 | 2011-12-28 | 东北电网有限公司 | Frequency-converter stabilized power supply apparatus possessing low voltage ride-through (LVRT) capability |
| CN202230181U (en) * | 2011-08-25 | 2012-05-23 | 中国电力科学研究院 | Power ring test apparatus for flexible DC power transmission MMC valve stable state operation test |
| JP2013027260A (en) * | 2011-07-26 | 2013-02-04 | Hitachi Ltd | Power conversion apparatus |
| CN103033701A (en) * | 2012-11-30 | 2013-04-10 | 许继集团有限公司 | Flexible direct current transmission converter valve steady-state high-power running testing device and testing method |
| CN103048502A (en) * | 2012-12-11 | 2013-04-17 | 国网智能电网研究院 | Control protection system of valve steady-state operation test device of shutoff device |
| CN103051213A (en) * | 2012-12-11 | 2013-04-17 | 国网智能电网研究院 | Energy replenishing power supply system and control method thereof for MMC valve |
| CN103197241A (en) * | 2013-03-20 | 2013-07-10 | 许继集团有限公司 | Testing device and testing method of flexible direct-current transmission modular multilevel converter (MMC) converter valve operating |
| CN103728508A (en) * | 2013-12-05 | 2014-04-16 | 国家电网公司 | Device and method for testing steady-state operation of MMC flexible direct current sub-module |
| CN104035027A (en) * | 2014-06-20 | 2014-09-10 | 中国西电电气股份有限公司 | Method for performing valve assembly running type test by using back-to-back loop test system |
| CN104036066A (en) * | 2014-04-30 | 2014-09-10 | 许继电气股份有限公司 | Method for simulating DC short circuit working condition of half-bridge type modular multi-level converter |
| CN104065088A (en) * | 2014-06-26 | 2014-09-24 | 许继电气股份有限公司 | High-voltage STATCOM commutation chain equivalent full-voltage and full-power operation control method |
-
2015
- 2015-03-17 CN CN201510117119.1A patent/CN104714132A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834451A (en) * | 2010-05-07 | 2010-09-15 | 中国科学院电工研究所 | High-voltage back-to-back converter |
| JP2013027260A (en) * | 2011-07-26 | 2013-02-04 | Hitachi Ltd | Power conversion apparatus |
| CN102299644A (en) * | 2011-08-23 | 2011-12-28 | 东北电网有限公司 | Frequency-converter stabilized power supply apparatus possessing low voltage ride-through (LVRT) capability |
| CN202230181U (en) * | 2011-08-25 | 2012-05-23 | 中国电力科学研究院 | Power ring test apparatus for flexible DC power transmission MMC valve stable state operation test |
| CN103033701A (en) * | 2012-11-30 | 2013-04-10 | 许继集团有限公司 | Flexible direct current transmission converter valve steady-state high-power running testing device and testing method |
| CN103048502A (en) * | 2012-12-11 | 2013-04-17 | 国网智能电网研究院 | Control protection system of valve steady-state operation test device of shutoff device |
| CN103051213A (en) * | 2012-12-11 | 2013-04-17 | 国网智能电网研究院 | Energy replenishing power supply system and control method thereof for MMC valve |
| CN103197241A (en) * | 2013-03-20 | 2013-07-10 | 许继集团有限公司 | Testing device and testing method of flexible direct-current transmission modular multilevel converter (MMC) converter valve operating |
| CN103728508A (en) * | 2013-12-05 | 2014-04-16 | 国家电网公司 | Device and method for testing steady-state operation of MMC flexible direct current sub-module |
| CN104036066A (en) * | 2014-04-30 | 2014-09-10 | 许继电气股份有限公司 | Method for simulating DC short circuit working condition of half-bridge type modular multi-level converter |
| CN104035027A (en) * | 2014-06-20 | 2014-09-10 | 中国西电电气股份有限公司 | Method for performing valve assembly running type test by using back-to-back loop test system |
| CN104065088A (en) * | 2014-06-26 | 2014-09-24 | 许继电气股份有限公司 | High-voltage STATCOM commutation chain equivalent full-voltage and full-power operation control method |
Non-Patent Citations (2)
| Title |
|---|
| 刘普等: "模块化多电平换流器优化模型预测控制策略研究", 《中国电机工程学报》 * |
| 王志新等: "海上风电柔性直流输电变流器研究", 《电网与清洁能源》 * |
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| CN105301406B (en) * | 2015-11-16 | 2018-03-27 | 特变电工新疆新能源股份有限公司 | A kind of flexible direct-current transmission valve section short-circuit test test system and its method of testing |
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