CN110137893A - A kind of full-bridge MMC type ice-melt experimental rig and method - Google Patents
A kind of full-bridge MMC type ice-melt experimental rig and method Download PDFInfo
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- CN110137893A CN110137893A CN201910537011.6A CN201910537011A CN110137893A CN 110137893 A CN110137893 A CN 110137893A CN 201910537011 A CN201910537011 A CN 201910537011A CN 110137893 A CN110137893 A CN 110137893A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 93
- 238000010998 test method Methods 0.000 claims description 38
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 14
- 238000002844 melting Methods 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000005413 snowmelt Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
Abstract
The invention discloses a kind of full-bridge MMC type ice-melt experimental rig and method, including full-bridge MMC inverter, the exchange side of full-bridge MMC inverter is connected on AC power source bus, and two direct current poles of full-bridge MMC inverter connect a direct current reactor.The present invention can be realized the zero load test that rated DC current flows down, the pressure build-up test of DC output end open circuit, STATCOM be fully loaded with mechanical back to back test, STATCOM it is fully loaded to drag+rated direct current test and STATCOM it is fully loaded to drag+rated direct voltage tests, structure is simple, occupied area is small, reactive power changes small (close to zero) when ice-melt, will not generate harmonic resonance.
Description
Technical field
The invention belongs to DC ice melting equipment technical fields, and in particular to a kind of full-bridge MMC type ice-melt experimental rig and side
Method.
Background technique
Currently, because transmission line of electricity freezes and accumulated snow due to causes high voltage transmission line to break and tower, the accident Shi Youfa of bar of falling
Life, ultra-high-tension power transmission line broken string and the accident of falling tower have seriously affected the safe operation of power grid, cause large area blackout.In order to
Prevent the generation of this kind of accident, it is necessary in time by conducting wire icing and accumulated snow melt, mainly take at present mechanical (vibration) formula,
The de-icing method of electrothermal two major classes.Mechanical (vibration) formula ice-melt makes ice and snow fall off, feature using the method for vibration conducting wire
It is simple operations, without wasting electric energy, but the disadvantage is that must carry out by shelves, speed is slow, and tight in ground icing and accumulated snow
In the case where weight, often it cannot reach the transmission line of electricity on high mountain because of traffic problems and can not be operated.Electrothermal melts
Ice technology utilizes the high current for generating line end short circuit that wire-heated is achieved the purpose that ice-melt, and mechanical (vibration
It is dynamic) formula de-icing method compares, and the advantages of electrothermal ice melting technology is ice-melt fast speed, not by icy on road and accumulated snow shadow
It rings, but certain electric energy need to be expended and configure relevant corollary apparatus.Currently based on the straight of thyristor rectifier and diode rectification
Flowing great current deicing technology is widely applied two kinds of de-icing technologies in electric system.D.C. high-current based on diode rectification
The advantages of de-icing technology, is that device is very simple and reliable, the disadvantage is that ice melting current cannot be continuously adjusted, cannot accomplish zero raising,
There are many gear of its rectifier transformer configured, and the gear of its in the deicing processes rectifier transformer adjust it is very frequent.
Biggish harmonic current is generated when their common drawback is ice-melt, is further provided with filtering to filter out these harmonic currents needs
Device.In addition, the phenomenon that because of route heavy ice is not common, the utilization rate of these devices is lower.Application No. is
The Chinese patent that the Chinese Patent Application No. of 200810060026.X is 200810120372.2 discloses two classes can be big by direct current
The device that electric current de-icing technology and static reactive power compensation technology (SVC) combine, effectively improves utilization rate of equipment and installations, and by
In use thyristor for power device, therefore have very high ice melting current.But it is required to match in two class devices of foregoing invention
Set the largely passive filter based on capacitor and reactor, thus exist and take up a large area, ice-melt when reactive power change
Greatly, the problems such as being easy to produce harmonic resonance.Chinese patent (application No. is ZL201320048177.X) discloses a kind of based on grade
The ice-melt of connection type voltage source converter (full-bridge MMC inverter) and STATCOM technology, technology are more complicated.
Summary of the invention
The technical problem to be solved by the present invention is a kind of full-bridge MMC type ice-melt experimental rig and method are provided, it is existing to solve
There is the problem of technology.
The technical scheme adopted by the invention is as follows: a kind of full-bridge MMC type ice-melt experimental rig, including full-bridge MMC inverter, entirely
The exchange side of bridge MMC inverter is connected on AC power source bus, and two direct current poles of full-bridge MMC inverter connect a direct current
Reactor.
Preferably, the DC output voltage of above-mentioned full-bridge MMC inverter is continuously adjusted within the set range.
Preferably, above-mentioned full-bridge MMC inverter by two identical star-connection modes cascade connection type STATCOM structure
At；The exchange side of two STATCOM passes through reactor and is connected on same AC power source bus；The neutrality of two STATCOM
Two direct current poles of the point respectively as full-bridge MMC inverter.
A kind of test method of full-bridge MMC type ice-melt experimental rig, this method includes the zero energy that rated DC current flows down
Test method, DC output end open circuit pressure build-up test method, STATCOM be fully loaded with mechanical back to back test method, STATCOM it is fully loaded to drag+
Rated direct current test method and STATCOM are fully loaded to dragging+rated DC current pressure test method.
The zero load test method that rated DC current flows down are as follows: the exchange side of full-bridge MMC type deicing device and full-bridge MMC type
The test of deicing device voltage rating is connected with AC power source bus, and the DC side of full-bridge MMC type deicing device connects one directly
Reactor is flowed, the reactive power reference qref of setting full-bridge MMC type deicing device is zero, after test starting, with full-bridge MMC type ice-melt
The controller of device connection gradually adjusts average anode current to rated value, and is maintained at rated value setting time, tests full-bridge
The rated direct current tolerance of all components of the DC side of MMC type deicing device, it is ensured that device is intact.Due to direct current
The theoretical resistance of anti-device is zero, which only consumes small active power, i.e. own loss of the device under the Test condition.And
And reactive power is zero when testing, therefore to the capacity requirement of test AC power source also very little.
DC output end open circuit pressure build-up test method are as follows: the exchange side of full-bridge MMC type deicing device and full-bridge MMC type ice-melt
The test of device voltage rating is connected with AC power source bus, and the DC side of full-bridge MMC type deicing device disconnects direct current reactor,
Open circuit is kept, the reactive power reference qref that direct current reactor is arranged is zero, after test starting, is connected with full-bridge MMC type deicing device
The controller connect gradually adjusts DC output voltage to rated value, and is maintained at rated value setting time, and test full-bridge MMC type is melted
The rated direct voltage tolerance of all components of the DC side of ice production apparatus, it is ensured that device is intact, idle due to the test
Power is zero, and does not load that the test only consumes the active power of very little, i.e. itself damage of the device under the Test condition
Consumption.Therefore to the capacity requirement very little of test AC power source.
STATCOM is fully loaded with mechanical back to back test method are as follows: the exchange side of full-bridge MMC type deicing device and full-bridge MMC type ice-melt dress
The test for setting voltage rating is connected with AC power source bus, and the DC side of full-bridge MMC type deicing device connects a direct current reactance
Device, after test starting, the controller connecting with full-bridge MMC type deicing device gradually adjusts one in full-bridge MMC inverter
STATCOM, which exports fully loaded reactive power while gradually adjusting another STATCOM absorption in MMC inverter, is fully loaded with idle function
Rate also gradually adjusts average anode current to rated value simultaneously, and is maintained at the state setting time, and test full-bridge MMC type is melted
The DC side of ice production apparatus and the rated current tolerance (ensuring that device is intact) for exchanging all components in side and the MMC change of current
The DC voltage fluctuation of all power modules is subjected to ability in device, it is ensured that device is intact, due to the theoretical resistance of direct current reactor
It is zero, which only consumes the active power of very little, i.e. own loss of the device under the Test condition.And one when testing
STATCOM exports fully loaded reactive power, another STATCOM absorbs fully loaded reactive power, so absorbed from experiment power supply
Net reactive power is zero.Therefore capacity requirement also very little of the test to test AC power source.
STATCOM is fully loaded to dragging+rated direct current test method are as follows: the exchange side of full-bridge MMC type deicing device and complete
The test of bridge MMC type deicing device voltage rating is connected with AC power source bus, full-bridge MMC type deicing device DC side open circuit,
After test starting, it is defeated that the controller connecting with full-bridge MMC type deicing device gradually adjusts a STATCOM in MMC inverter
Fully loaded reactive power, another STATCOM gradually adjusted in MMC inverter simultaneously absorb fully loaded reactive power, go back simultaneously out
DC output voltage is gradually adjusted to rated value, and is maintained at the state setting time, tests full-bridge MMC type deicing device direct current
Side and all power in the voltage rating tolerance (ensuring that device is intact) and MMC inverter that exchange all components in side
The direct voltage output ability of module, it is ensured that device is intact.Since the net reactive power that the test is absorbed from experiment power supply is
Zero and do not have active load, therefore the test to test AC power source capacity requirement very little.
STATCOM is fully loaded to dragging+rated DC current pressure test method are as follows: the exchange side of full-bridge MMC type deicing device and complete
The test AC power source of bridge MMC type deicing device voltage rating connects, full-bridge MMC type deicing device DC side open circuit, and setting is complete
The DC output voltage reference value of bridge MMC type deicing device is zero, after test starting, is connect with full-bridge MMC type deicing device
Controller gradually adjusts a STATCOM in MMC inverter and exports fully loaded reactive power while gradually adjusting MMC inverter
In another STATCOM absorb fully loaded reactive power, and keep setting time, test full-bridge MMC type deicing device exchanges side
The rated alternating current tolerance of all components, it is ensured that device is intact.When due to test, without DC load, and one
STATCOM exports fully loaded reactive power, another STATCOM absorbs fully loaded reactive power, so absorbed from experiment power supply
Net reactive power is zero.And it does not load, therefore the test is to the capacity requirement very little of test AC power source.
Beneficial effects of the present invention: compared with prior art, the present invention can be realized the zero energy that rated DC current flows down
It is fully loaded to dragging+rated direct current that mechanical back to back test, STATCOM are fully loaded in test, the pressure build-up test of DC output end open circuit, STATCOM
Test and STATCOM it is fully loaded to drag+rated direct voltage tests, structure is simple, and occupied area is small, and reactive power changes when ice-melt
Small (close to zero), will not generate harmonic resonance, by the DC ice melting technology based on diode rectifier and based on the full-bridge of IGBT
MMC inverter technology combines, to well solve following problem: 1) single based on the straight of diode rectifier
Flow de-icing technology in ice-melt: there are many gear of the rectifier transformer of problem, its configuration that ice melting current cannot be continuously adjusted, and
And the gear of its in the deicing processes rectifier transformer adjust very frequent problem, ice melting current cannot zero raising the problem of,
With harmonic wave current problems, 2) the low problem of the service efficiency of equipment.
The active power capacity of full-bridge MMC inverter in the present invention are as follows: U0IDC (IDCFor the nominal DC of deicing device
Electric current), and the active power capacity of the inverter in full-bridge MMC converter type DC ice melting technology are as follows: 4U0IDC, the two is 4
Relationship again.
The ac-side current harmonic content of apparatus of the present invention is very low, power factor is close to one, therefore the device of the invention
It does not need to configure the largely passive filter based on capacitor and reactor in exchange side, thus greatly reduces whole device
Occupied area.
Detailed description of the invention
Fig. 1 is the present invention in " pressure build-up test of DC output end open circuit "；" STATCOM is fully loaded with mechanical back to back test " and " STATCOM
It is fully loaded to drag+rated direct voltage tests " when electrical block diagram；
Fig. 2 is the present invention at " zero load test that rated DC current flows down " and " STATCOM is fully loaded with to dragging+rated direct current
Electrical block diagram when test ".
Specific embodiment
With reference to the accompanying drawing and the present invention is described further in specific embodiment.
Embodiment 1: as shown in Figs. 1-2, a kind of full-bridge MMC type ice-melt experimental rig, including full-bridge MMC inverter, full-bridge
The exchange side of MMC inverter is connected on AC power source bus, and two direct current poles of full-bridge MMC inverter connect a direct current
Anti- device, direct current reactor concatenate a switch.
Preferably, the DC output voltage of above-mentioned full-bridge MMC inverter is continuously adjusted within the set range.
Preferably, above-mentioned full-bridge MMC inverter by two identical star-connection modes cascade connection type STATCOM structure
At；The exchange side of two STATCOM passes through reactor and is connected on same AC power source bus；The neutrality of two STATCOM
Two direct current poles of the point respectively as full-bridge MMC inverter.
Embodiment 2: a kind of test method of full-bridge MMC type ice-melt experimental rig, this method includes that rated DC current flows down
Zero load test method, DC output end open circuit pressure build-up test method, that STATCOM is fully loaded with mechanical back to back test method, STATCOM is full
Carry to drag+rated direct current test method and STATCOM be fully loaded to dragging+rated DC current pressure test method.
As shown in Fig. 2, the zero load test method that rated DC current flows down are as follows: the exchange side of full-bridge MMC type deicing device
It is connected with the test of full-bridge MMC type deicing device voltage rating with AC power source bus, the DC side of full-bridge MMC type deicing device
Connect a direct current reactor, the reactive power reference qref of setting full-bridge MMC type deicing device is zero, and complete after test starting
Bridge MMC type deicing device connection controller gradually adjust average anode current to rated value, and be maintained at rated value set when
Between, test the rated direct current tolerance of all components of DC side of full-bridge MMC type deicing device, it is ensured that device is complete
It is good.Since the theoretical resistance of direct current reactor is zero, which only consumes small active power, i.e., device is under the Test condition
Own loss.And reactive power is zero when testing, therefore to the capacity requirement of test AC power source also very little.
The pressure build-up test method as shown in Figure 1, DC output end is opened a way are as follows: the exchange side of full-bridge MMC type deicing device and complete
The test of bridge MMC type deicing device voltage rating is connected with AC power source bus, and the DC side of full-bridge MMC type deicing device disconnects
Direct current reactor keeps open circuit, and the reactive power reference qref that direct current reactor is arranged is zero, after test starting, with full-bridge MMC type
The controller of deicing device connection gradually adjusts DC output voltage to rated value, and is maintained at rated value setting time, tests
The rated direct voltage tolerance of all components of DC side of full-bridge MMC type deicing device, it is ensured that device is intact.Due to this
The reactive power of test is zero, and does not load that the test only consumes the active power of very little, i.e., device is under the Test condition
Own loss.Therefore to the capacity requirement very little of test AC power source.
As shown in Fig. 2, STATCOM is fully loaded with mechanical back to back test method are as follows: the exchange side of full-bridge MMC type deicing device and full-bridge
The test of MMC type deicing device voltage rating is connected with AC power source bus, the DC side connection one of full-bridge MMC type deicing device
A direct current reactor, after test starting, the controller connecting with full-bridge MMC type deicing device gradually adjusts full-bridge MMC inverter
In a STATCOM export fully loaded reactive power, another STATCOM for gradually adjusting in MMC inverter simultaneously absorb it is full
It carries reactive power, also gradually adjust average anode current simultaneously to rated value, and be maintained at the state setting time, test full-bridge
The DC side of MMC type deicing device and the rated current tolerance (ensuring that device is intact) for exchanging all components in side and
The DC voltage fluctuation of all power modules is subjected to ability in MMC inverter, it is ensured that device is intact.Due to the reason of direct current reactor
It is zero by resistance, which only consumes the active power of very little, i.e. own loss of the device under the Test condition.And when testing
One STATCOM exports fully loaded reactive power, another STATCOM absorbs fully loaded reactive power, so inhaling from experiment power supply
The net reactive power received is zero.Therefore capacity requirement also very little of the test to test AC power source.
As shown in Figure 1, STATCOM is fully loaded to dragging+rated direct current test method are as follows: full-bridge MMC type deicing device
Exchange side is connected with the test of full-bridge MMC type deicing device voltage rating with AC power source bus, and full-bridge MMC type deicing device is straight
Side open circuit is flowed, after test starting, the controller connecting with full-bridge MMC type deicing device gradually adjusts one in MMC inverter
STATCOM, which exports fully loaded reactive power while gradually adjusting another STATCOM absorption in MMC inverter, is fully loaded with idle function
Rate also gradually adjusts DC output voltage to rated value simultaneously, and is maintained at the state setting time, and test full-bridge MMC type is melted
Ice production apparatus DC side and the voltage rating tolerance (ensuring that device is intact) and MMC inverter for exchanging all components in side
In all power modules direct voltage output ability, it is ensured that device is intact.Due to the test absorbed from experiment power supply it is net
Reactive power is zero and without active load, therefore the test is to the capacity requirement very little of test AC power source.
As shown in Figure 1, STATCOM is fully loaded to dragging+rated DC current pressure test method are as follows: full-bridge MMC type deicing device
Exchange side is connected with the test AC power source of full-bridge MMC type deicing device voltage rating, and full-bridge MMC type deicing device DC side is opened
The DC output voltage reference value on road, setting full-bridge MMC type deicing device is zero, after test starting, is filled with full-bridge MMC type ice-melt
The controller for setting connection gradually adjusts the fully loaded reactive power of STATCOM output in MMC inverter while gradually adjusting
Another STATCOM in MMC inverter absorbs fully loaded reactive power, and keeps setting time, test full-bridge MMC type ice-melt dress
Set the rated alternating current tolerance of the exchange all components in side.When due to test, without DC load, and one
STATCOM exports fully loaded reactive power, another STATCOM absorbs fully loaded reactive power, so absorbed from experiment power supply
Net reactive power is zero.And it does not load, therefore the test is to the capacity requirement very little of test AC power source.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Within protection scope of the present invention, therefore, protection scope of the present invention should be based on the protection scope of the described claims lid.
Claims (9)
1. a kind of full-bridge MMC type ice-melt experimental rig, it is characterised in that: including full-bridge MMC inverter, full-bridge MMC inverter
Exchange side is connected on AC power source bus, and two direct current poles of full-bridge MMC inverter connect a direct current reactor.
2. a kind of full-bridge MMC type ice-melt experimental rig according to claim 1, it is characterised in that: full-bridge MMC inverter
DC output voltage is continuously adjusted within the set range.
3. a kind of full-bridge MMC type ice-melt experimental rig according to claim 1, it is characterised in that: full-bridge MMC inverter by
The cascade connection type STATCOM of two identical star-connection modes is constituted；The exchange side of two STATCOM passes through reactor
It is connected on same AC power source bus；Two direct currents of the neutral point of two STATCOM respectively as full-bridge MMC inverter
Pole.
4. a kind of test method of full-bridge MMC type ice-melt experimental rig according to claim 1 to 3, feature exist
In: this method include rated DC current flow down zero load test method, DC output end open circuit pressure build-up test method,
STATCOM be fully loaded with mechanical back to back test method, STATCOM it is fully loaded to drag+rated direct current test method and STATCOM it is fully loaded to dragging
+ rated DC current pressure test method.
5. a kind of test method of full-bridge MMC type ice-melt experimental rig according to claim 4, it is characterised in that: specified
Zero load test method under DC current are as follows: the exchange side of full-bridge MMC type deicing device and full-bridge MMC type deicing device are specified
The test of voltage is connected with AC power source bus, and the DC side of full-bridge MMC type deicing device connects a direct current reactor, setting
The reactive power reference qref of full-bridge MMC type deicing device is zero, is tested after starting, the control connecting with full-bridge MMC type deicing device
Device processed gradually adjusts average anode current to rated value, and is maintained at rated value setting time, tests full-bridge MMC type deicing device
All components of DC side rated direct current tolerance.
6. a kind of test method of full-bridge MMC type ice-melt experimental rig according to claim 4, it is characterised in that: direct current
Output end open circuit pressure build-up test method are as follows: the exchange side of full-bridge MMC type deicing device and full-bridge MMC type deicing device voltage rating
Test connected with AC power source bus, the DC side of full-bridge MMC type deicing device disconnects direct current reactor, keep open circuit, if
The reactive power reference qref for setting direct current reactor is zero, after test starting, the controller that is connect with full-bridge MMC type deicing device by
DC output voltage is gradually adjusted to rated value, and is maintained at rated value setting time, tests the direct current of full-bridge MMC type deicing device
The rated direct voltage tolerance of all components in side.
7. a kind of test method of full-bridge MMC type ice-melt experimental rig according to claim 4, it is characterised in that:
STATCOM is fully loaded with mechanical back to back test method are as follows: the exchange side of full-bridge MMC type deicing device and the specified electricity of full-bridge MMC type deicing device
The test of pressure is connected with AC power source bus, and the DC side of full-bridge MMC type deicing device connects a direct current reactor, and test is opened
After dynamic, the controller connecting with full-bridge MMC type deicing device gradually adjusts the output of a STATCOM in full-bridge MMC inverter
Fully loaded reactive power, another STATCOM for gradually adjusting in MMC inverter simultaneously absorb fully loaded reactive power, simultaneously also by
Average anode current is gradually adjusted to rated value, and is maintained at the state setting time, tests the direct current of full-bridge MMC type deicing device
The DC voltage of side and all power modules in the rated current tolerance and MMC inverter that exchange all components in side
Fluctuation is subjected to ability.
8. a kind of test method of full-bridge MMC type ice-melt experimental rig according to claim 4, it is characterised in that:
STATCOM is fully loaded to dragging+rated direct current test method are as follows: the exchange side of full-bridge MMC type deicing device and full-bridge MMC type are melted
The test of ice production apparatus voltage rating is connected with AC power source bus, full-bridge MMC type deicing device DC side open circuit, test starting
Afterwards, the controller connecting with full-bridge MMC type deicing device gradually adjusts a STATCOM in MMC inverter and exports fully loaded nothing
Function power, another STATCOM gradually adjusted in MMC inverter simultaneously absorb fully loaded reactive power, also gradually adjust simultaneously
DC output voltage is maintained at the state setting time to rated value, test full-bridge MMC type deicing device DC side with exchange
The direct voltage output ability of all power modules in the voltage rating tolerance and MMC inverter of all components in side.
9. a kind of test method of full-bridge MMC type ice-melt experimental rig according to claim 4, it is characterised in that:
STATCOM is fully loaded to dragging+rated DC current pressure test method are as follows: the exchange side of full-bridge MMC type deicing device and full-bridge MMC type are melted
The test AC power source of ice production apparatus voltage rating connects, and full-bridge MMC type deicing device DC side open circuit, setting full-bridge MMC type is melted
The DC output voltage reference value of ice production apparatus is zero, and after test starting, the controller connecting with full-bridge MMC type deicing device is gradually
It adjusts a STATCOM in MMC inverter and exports another being fully loaded in reactive power while gradually adjusting MMC inverter
STATCOM absorbs fully loaded reactive power, and keeps setting time, and test full-bridge MMC type deicing device exchanges all components in side
Rated alternating current tolerance.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108226811A (en) * | 2017-12-30 | 2018-06-29 | 长园深瑞继保自动化有限公司 | Converter power module liquidates test system |
| CN113176459A (en) * | 2021-04-01 | 2021-07-27 | 南方电网科学研究院有限责任公司 | Flexible direct current converter valve power module starting test method and circuit thereof |
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