CN204679566U - A kind of high pressure flexible direct current transmitted power unit forceful electric power test loop - Google Patents
A kind of high pressure flexible direct current transmitted power unit forceful electric power test loop Download PDFInfo
- Publication number
- CN204679566U CN204679566U CN201520402266.9U CN201520402266U CN204679566U CN 204679566 U CN204679566 U CN 204679566U CN 201520402266 U CN201520402266 U CN 201520402266U CN 204679566 U CN204679566 U CN 204679566U
- Authority
- CN
- China
- Prior art keywords
- power
- test
- power cell
- module
- direct current
- 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
Abstract
A kind of high pressure flexible direct current transmitted power unit forceful electric power test loop, comprises test direct supply generation module and the power cell test module be attached thereto and power cell and accompanies die trial block; Described power cell test module and power cell accompany die trial block to include power model control panel for driving inner IGBT action, the external power model test platform controller for sending trigger pip and acceptance test monitor signal to it of power model control panel; Described power cell test module and power cell accompany die trial block to form H type bridge circuit, the external power model test operation platform for controlling it of power model test platform controller; Described power cell test module and power cell are accompanied between die trial block and are provided with load inductance, by sending reactive current to load inductance with the thermal stability of the inner IGBT of evaluation module in big current situation.The utility model have implementation cost low, be easy to operation, test efficiency advantages of higher.
Description
Technical field
The utility model relates to a kind of forceful electric power test loop, is specifically related to a kind of high pressure flexible direct current transmitted power unit forceful electric power test loop.
Background technology
Increasingly serious along with the problem such as energy scarcity and environmental pollution, country is by Devoting Major Efforts To Developing and utilize renewable and clean energy resource, with Optimization of Energy Structure.But along with the continuous expansion of the renewable energy utilization such as wind energy, sun power scale, its intrinsic dispersiveness, compactness and away from features such as load centers, make to adopt UHV AC transmission technique or the networking of traditional HVDC Transmission Technology to seem very uneconomical.The simultaneously passive load such as marine drilling platform and isolated island, all adopts expensive local Blast Furnace Top Gas Recovery Turbine Unit (TRT) at present, not only uneconomical but also contaminated environment.In addition, the quick increase of electricity need load, needs the capacity constantly expanding electrical network, but in view of urban population expansion and the planning of city rationality, require on the one hand to utilize limited line corridor to carry more electric energy, require that a large amount of power distribution networks goes underground on the other hand.Therefore, in the urgent need to adopting more flexibly, the power transmission mode of economy and environmental protection solves above problem.
Technology of HVDC based Voltage Source Converter also claims HVDC Light technology, transmit electricity different from traditional current source type transverter based on natural commutation technology, VSC-HVDC is a kind of VSC-HVDC technology based on voltage source converter, controlled shutoff device and width modulation (PWM technology).This technology of transmission of electricity instantaneous realization can be gained merit and idle independent uneoupled control, can power, be easy to form MTDC transmission system without the need to communication between current conversion station to passive network.In addition, this technology of transmission of electricity can provide the Emergency Assistance of active power and reactive power simultaneously to system, has advantage improving in the stability of system and ability to transmit electricity etc.
Utility model content
The purpose of this utility model is for above-mentioned defect of the prior art, provides a kind of structure simple, easily operates, the high pressure flexible direct current transmitted power unit forceful electric power test loop that testing cost is lower.
To achieve these goals, the technical solution adopted in the utility model is:
Comprise test direct supply generation module and the power cell test module be attached thereto and power cell and accompany die trial block; Described power cell test module and power cell accompany die trial block to include power model control panel for driving inner IGBT action, the external power model test platform controller for sending trigger pip and acceptance test monitor signal to it of power model control panel; Described power cell test module and power cell accompany die trial block to form H type bridge circuit, the external power model test operation platform for controlling it of power model test platform controller; Described power cell test module and power cell are accompanied between die trial block and are provided with load inductance, by sending reactive current to load inductance with the thermal stability of the inner IGBT of evaluation module in big current situation.
Described test direct supply generation module comprises the disconnecting link connected with electrical network, and the fuse connected successively with disconnecting link, A.C. contactor, pressure regulator, step-up transformer and high-voltage rectifier; Described high-voltage rectifier output test high voltage direct current.
External surge suppressor between described step-up transformer and high-voltage rectifier.
Described high-voltage rectifier is high pressure three-phase diode bridge rectifier.
Two IGBT power cells that described power cell test module and power cell accompany die trial block to include to be connected in series.
Described IGBT power cell side arranges anti-paralleled diode.
The DC side that described power cell test module and power cell accompany die trial block to be connected with main busbar is also provided with capacitor.
Described power cell test module, power cell accompanies die trial block, power model test platform controller and the external accessory power supply of power model test operation platform.
Compared with prior art, power cell test module and power cell accompany die trial block to form H type bridge circuit by the utility model, by sending reactive current to load inductance with the inner thermal stability of IGBT in big current situation of evaluation module and the radiating effect of cooled plate.The unloaded pressure build-up test of the utility model can verify the board electronic equipment performance of getting energy from DC capacitor; when reaching minimum direct current voltage; power model electronic circuit should be able to normally run; trigger power device and detect feedback signal; when voltage reaches " overvoltage " and " under-voltage " protection value, there is corresponding indicating fault.The utility model run with load and bypass trigger test can verify that power model is at the switching capability periodically turned on and off, because the electric current and voltage combined action of switching process produces stress in operation, investigate the rationality of power model inner structure, the correctness of electric property, cooling system whether effectively and module run temperature rise situation.The utility model have implementation cost low, be easy to operation, test efficiency advantages of higher, for flexible direct current transmission converter valve power cell batch carries out routine test and lays a good foundation, improve product quality.
Further, the utility model IGBT power cell side arranges anti-paralleled diode, and the passage of load to DC side feedback energy be not only by this diode, also plays afterflow simultaneously.
Further, the DC side that the utility model power cell test module and power cell accompany die trial block to be connected with main busbar is also provided with capacitor, the effect of DC bus capacitor device is to provide voltage support, and dash current when buffering high-voltage rectifier brachium pontis turns off also reduces DC side harmonics.
Accompanying drawing explanation
Fig. 1 the utility model one-piece construction schematic diagram;
In accompanying drawing: I-test direct supply generation module; II-power cell test module; III-power cell accompanies die trial block; 1-power model test platform controller; 2-power model test operation platform; 3-load inductance; 4-disconnecting link; 5-fuse; 6-A.C. contactor; 7-pressure regulator; 8-step-up transformer; 9-high-voltage rectifier; 10-surge suppressor; 11-bypass thyristor; 12-anti-paralleled diode; 13-capacitor; 14-accessory power supply; 15-D.C. voltmeter.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See Fig. 1, the power cell test module II that the utility model structurally comprises test direct supply generation module I and is attached thereto, power cell accompanies die trial block III and power model test platform controller 1, the external power model test operation platform 2 of power model test platform controller 1.Power cell test module II, power cell accompanies die trial block III, power model test platform controller 1 and the external accessory power supply 14 of power model test operation platform 2.Test direct supply generation module I comprises the disconnecting link 4 connected with electrical network, and the fuse 5 to connect successively with disconnecting link 4, A.C. contactor 6, pressure regulator 7, step-up transformer 8 and high-voltage rectifier 9, external surge suppressor 10 between step-up transformer 8 and high-voltage rectifier 9.
Power cell test module II and power cell accompany die trial block III structure identical, include the static state voltage equipoise circuit be connected with main busbar, absorbing circuit, bypass thyristor 11, heating radiator, IGBT module and IGBT control loop.IGBT module comprises two IGBT power cells of serial connection, and IGBT power cell side arranges anti-paralleled diode 12.The DC side that power cell test module II and power cell accompany die trial block III to be connected with main busbar is also provided with capacitor 13, and AC is also provided with converter reactor.Power cell test module II and power cell accompany die trial block III to form H type bridge circuit, and by power model control panel inner separately by Fiber connection power model test platform controller 1; Power cell test module II and power cell accompany die trial block III outside to be all connected D.C. voltmeter 14, power cell test module II and power cell are accompanied between die trial block III and are provided with load inductance 3, by sending reactive current to load inductance 3 with the inner thermal stability of IGBT in big current situation of evaluation module and the radiating effect of cooled plate.
A. high-voltage rectifier 9 adopts high pressure three-phase diode bridge rectifier, and specifications parameter requires:
Rated direct voltage: 0 ~ 3kV;
Rated direct current: 200A.
B. step-up transformer 8 specifications parameter requires:
Nominal input voltage: 380V;
Rated output voltage: 1800V;
Rated capacity: 150kVA.
C. pressure regulator 7 adopts three-phase column type voltage regulator, and specifications parameter requires:
Nominal input voltage: 380V;
Rated output voltage: 0 ~ 420V;
Rated capacity: 150kVA;
The number of phases: three-phase;
Frequency: 50Hz;
Voltage regulating mode: the electronic pressure regulation of contact;
Output voltage during zero-bit :≤5V;
Short-circuit impedance :≤7.5%;
Wave form distortion :≤2%.
D. load inductance 3 specifications parameter requires:
Inductance ratings amount: 3.5mH, 4.4mH, 5mH, 5.9mH, 7mH, 10mH;
Rated frequency: 50Hz;
Rated voltage: 2000V;
Rated current: 650A.
E. power model test operation platform 2 has control splitting or integrating lock, boosting, step-down, crosses the functions such as current test, power test, bypass triggering, power test, electric discharge.
The voltage of system equipment, electric current display:
1) pressure regulator input voltage, electric current;
2) pressure regulator output voltage, electric current;
3) transformer output voltage, electric current;
4) rectifier cabinet output voltage, electric current;
DC capacitor voltage during the power model actual motion of soft direct line system is 1667V, and consider that malfunction lower module is in uncontrollable state, each power model capacitance voltage can reach 2300V.
Test loop parameter designing and calculating:
Line voltage 10kV, DC voltage 20kV when running according to real system.If assuming that active power 12.5MW, reactive power 6.25MVar calculates, and namely applied power is 14.0MVA.Suppose that a phase line voltage is 8164sin (100 π t) V simultaneously, then a phase current is 1143sin (100 π t ± 26.6 °) A, the electric current that bridge arm current/each power model flows through is 208+572sin (100 π t ± 26.6 °) A, the i.e. maximum 780A of rated current instantaneous value.When system 120% is transshipped, system active power is 15MW, and reactive power is zero.Suppose that a phase line voltage is 8164sin (100 π t) V simultaneously, then a phase current is 1225sin (100 π t) A, the electric current that bridge arm current/each power model flows through is 250+613sin (100 π t) A, i.e. current instantaneous value maximum 863A during system overload 120%.Therefore, the electric current peak-peak that each power model flows through is 863A.Die trial block III can be accompanied to form full-bridge inverter by power cell test module II and power cell, and combination load inductance 3 carry out maximum current test.Rated direct voltage due to full-bridge inverter is 1667V, therefore load inductance 3 is 6.15mH to the maximum.
Practical application example:
1. blue or green Australia soft straight engineering KGWF-102/ ± 160 power cell forceful electric power test
Test loop (for the soft straight engineering KGWF-102/ ± 160 power cell forceful electric power test of blue or green Australia, according to flexible DC power transmission engineering blue or green Australia current conversion station power model routine test outline) is connected according to accompanying drawing 1 electrical schematic diagram; Whether this test is mainly correctly verified power model electric function, and whether detection hardware board coordinates correct with power model device function, electrical specification, PMC program verification.All pilot projects of forceful electric power test will at room temperature be carried out, and the water route of test product should be full of deionized water, enters water water temperature and is no more than 52 DEG C, and cooling electrical conductivity of water is not more than 0.55 μ s/cm, and the flow of chilled water is about 0.6 ~ 0.7L/min.
2. unloaded pressure build-up test
The board electronic equipment performance of energy is got in checking by this test from DC capacitor; when reaching minimum direct current voltage, power model electronic circuit should be able to normally run, trigger power device and detect feedback signal; when voltage reaches " overvoltage " and " under-voltage " protection value, there is corresponding indicating fault.Test procedure is as follows:
1) unloaded boosting 450V, to observe when self-energizing obtains electric situation DC voltage display whether between 390V to 420V.And the DC voltage value recorded when self-energizing has output.
2) unloaded boosting 1850V, maintains 1min.
3) unloaded boosting 2100V, overvoltage protection, under-voltage protection.
3. run with load and bypass trigger test
The switching capability that checking power model turns on and off in periodicity by this test, because the electric current and voltage combined action of switching process produces stress in operation, investigate the rationality of power model inner structure, the correctness of electric property, cooling system whether effectively and module run temperature rise situation.
1) connect 22mH inductance, carry out following steps operation at forceful electric power test operation platform
When 450V band carries, current peak is about 35-47A.Current value can be observed from man-machine interface, during 1000V-1050, current peak is about 83-95A, treat that DC voltage proceeds to 1850V band and carries, start " power test 3 " (current peak is about 152-170A) button, run 30s, start " crossing current test 1 " (current peak is about 197-220A) button, run 5min, the record final intake-outlet temperature of test and man-machine interface temperature, record test waveform, and writing time.
2) start bypass and trigger test, run and stop; Press " bypass triggering " button, the sound of by-pass switch action can be heard.And run stopping automatically.Press " inverter stopping ".
3) step-down discharge operation is started.
Test findings: by this test loop, verifies the correctness of power cell electrical function and correctness that in power cell, hardware board electrical specification, PMC control program coordinate with power cell function is verified, improves product quality.
Claims (8)
1. a high pressure flexible direct current transmitted power unit forceful electric power test loop, is characterized in that: comprise test direct supply generation module (I) and the power cell test module (II) be attached thereto and power cell and accompany die trial block (III); Described power cell test module (II) and power cell accompany die trial block (III) to include power model control panel for driving inner IGBT action, the external power model test platform controller (1) for sending trigger pip and acceptance test monitor signal to it of power model control panel; Described power cell test module (II) and power cell accompany die trial block (III) to form H type bridge circuit, the external power model test operation platform (2) for controlling it of power model test platform controller (1); Described power cell test module (II) and power cell are accompanied between die trial block (III) and are provided with load inductance (3), by sending reactive current to load inductance (3) with the thermal stability of the inner IGBT of evaluation module in big current situation.
2. high pressure flexible direct current transmitted power unit forceful electric power test loop according to claim 1, it is characterized in that: described test direct supply generation module (I) comprises the disconnecting link (4) connected with electrical network, and the fuse (5) to connect successively with disconnecting link (4), A.C. contactor (6), pressure regulator (7), step-up transformer (8) and high-voltage rectifier (9); Described high-voltage rectifier (9) output test high voltage direct current.
3. high pressure flexible direct current transmitted power unit forceful electric power test loop according to claim 2, is characterized in that: external surge suppressor (10) between described step-up transformer (8) and high-voltage rectifier (9).
4. high pressure flexible direct current transmitted power unit forceful electric power test loop according to claim 2, is characterized in that: described high-voltage rectifier (9) is high pressure three-phase diode bridge rectifier.
5. high pressure flexible direct current transmitted power unit forceful electric power test loop according to claim 1, is characterized in that: two IGBT power cells that described power cell test module (II) and power cell accompany die trial block (III) to include to be connected in series.
6. high pressure flexible direct current transmitted power unit forceful electric power test loop according to claim 5, is characterized in that: described IGBT power cell side arranges anti-paralleled diode (12).
7. high pressure flexible direct current transmitted power unit forceful electric power test loop according to claim 1, is characterized in that: the DC side that described power cell test module (II) and power cell accompany die trial block (III) to be connected with main busbar is also provided with capacitor (13).
8. high pressure flexible direct current transmitted power unit forceful electric power test loop according to claim 1, it is characterized in that: described power cell test module (II), power cell accompanies die trial block (III), power model test platform controller (1) and power model test operation platform (2) external accessory power supply (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520402266.9U CN204679566U (en) | 2015-06-11 | 2015-06-11 | A kind of high pressure flexible direct current transmitted power unit forceful electric power test loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520402266.9U CN204679566U (en) | 2015-06-11 | 2015-06-11 | A kind of high pressure flexible direct current transmitted power unit forceful electric power test loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204679566U true CN204679566U (en) | 2015-09-30 |
Family
ID=54179249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520402266.9U Active CN204679566U (en) | 2015-06-11 | 2015-06-11 | A kind of high pressure flexible direct current transmitted power unit forceful electric power test loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204679566U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301406A (en) * | 2015-11-16 | 2016-02-03 | 特变电工新疆新能源股份有限公司 | Flexible direct-current power transmission valve segment short-circuit experiment testing system and testing method thereof |
| CN111781532A (en) * | 2020-07-10 | 2020-10-16 | 北京交通大学 | Circuit and method for realizing aging experiment of three-phase inverter power module |
| CN112034322A (en) * | 2020-08-17 | 2020-12-04 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Overvoltage bypass test loop and test method for MMC power module thyristor |
| CN112557792A (en) * | 2020-12-04 | 2021-03-26 | 广东电网有限责任公司 | Power electronic transformer power module online testing device and method thereof |
-
2015
- 2015-06-11 CN CN201520402266.9U patent/CN204679566U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301406A (en) * | 2015-11-16 | 2016-02-03 | 特变电工新疆新能源股份有限公司 | Flexible direct-current power transmission valve segment short-circuit experiment testing system and testing method thereof |
| 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 |
| CN111781532A (en) * | 2020-07-10 | 2020-10-16 | 北京交通大学 | Circuit and method for realizing aging experiment of three-phase inverter power module |
| CN111781532B (en) * | 2020-07-10 | 2021-06-08 | 北京交通大学 | Circuit and method for realizing aging experiment of three-phase inverter power module |
| CN112034322A (en) * | 2020-08-17 | 2020-12-04 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Overvoltage bypass test loop and test method for MMC power module thyristor |
| CN112557792A (en) * | 2020-12-04 | 2021-03-26 | 广东电网有限责任公司 | Power electronic transformer power module online testing device and method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Salomonsson et al. | Low-voltage DC distribution system for commercial power systems with sensitive electronic loads | |
| CN104034984B (en) | Short-circuit test method for engineering valve assembly in running test for flexible direct current transmission | |
| CN204679566U (en) | A kind of high pressure flexible direct current transmitted power unit forceful electric power test loop | |
| He et al. | Design and implementation of an energy feedback digital device used in elevator | |
| CN104009452A (en) | Protection scheme for direct current distribution system short-circuit fault | |
| Byeon et al. | A research on the characteristics of fault current of DC distribution system and AC distribution system | |
| CN103427425A (en) | Coordinated control device and method for MMC (modular multilevel converter) type unified power quality conditioner | |
| CN104333033A (en) | Power distribution system and power distribution method | |
| EP4075625A1 (en) | Sea island power transmission system and control method therefor | |
| CN105137212A (en) | Method for realizing short-circuit test between pole lines of converter valve by using high-speed power electronic switch | |
| CN103490639A (en) | Flexible distribution transformer based on full flexible control | |
| CN103633652A (en) | Subarea power grid interconnection system and method | |
| CN102882393B (en) | Power supply device for converter valve of static VAR generator | |
| US20220407316A1 (en) | Flexible excitation system and control method therefor | |
| CN203466765U (en) | Boiler air pre-heater frequency converter based on low-voltage ride-through device | |
| Han et al. | System integration and demonstration of a 4.5 MVA STATCOM based on emitter turn-off (ETO) thyristor and cascade multilevel converter | |
| CN101210941B (en) | Large power converter subsequent lockout overcurrent, subsequent power loss and overcurrent test method | |
| CN204465349U (en) | A kind of shore electric power system | |
| CN204407914U (en) | For the energy storage type electric energy regulator of wind generator system | |
| CN206332455U (en) | A kind of pole voltage power-less comprehensive compensating device towards urban power distribution network | |
| de Almeida et al. | Modulation technique for a single-stage three-phase bidirectional AC/DC converter with PFC and high-frequency isolation | |
| CN104852596A (en) | Shore power source system | |
| Ozdemir et al. | A new multifunctional power converter for grid connected residential photovoltaic applications | |
| Hu et al. | A novel power control strategy of Modular Multi-level Converter in HVDC-AC hybrid transmission systems for passive networks | |
| CN202748418U (en) | H-bridge full-power testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |