CN108667045A - A kind of sub-synchronous oscillation restraining device and power grid output system - Google Patents
A kind of sub-synchronous oscillation restraining device and power grid output system Download PDFInfo
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- CN108667045A CN108667045A CN201810432364.5A CN201810432364A CN108667045A CN 108667045 A CN108667045 A CN 108667045A CN 201810432364 A CN201810432364 A CN 201810432364A CN 108667045 A CN108667045 A CN 108667045A
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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
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
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Abstract
The present invention discloses a kind of sub-synchronous oscillation restraining device and power grid output system, sub-synchronous oscillation restraining device includes signal collecting device, it connects the leading-out terminal of bus rod, for acquiring the electrical parameter information on transmission line of electricity, subsynchronous data extraction device, connection signal collecting device, for extracting subsynchronous signal from electrical parameter information；Series transformer, primary side are separately connected the input terminal for collecting station and by terminal circuits；MMC converter valves, including several cascade MMC changes of current modules, the output end of MMC converter valves are connected in parallel the secondary side of series transformer；Control circuit is separately connected the input terminal of subsynchronous data extraction device and MMC converter valves, and the output voltage for controlling MMC converter valves changes to inhibit subsynchronous signal.The sub-synchronous oscillation restraining device structure of the present invention is relatively simple, and signal collecting device acquires the electrical parameter information on transmission line of electricity, can quickly inhibit the subsynchronous signal of the different frequency extracted from electrical parameter.
Description
Technical field
The present invention relates to power electronic equipment technical fields, and in particular to a kind of sub-synchronous oscillation restraining device and power grid are defeated
Go out system.
Background technology
Sub-synchronous oscillation (SSR) is extremely common in electric system and a kind of huge low-frequency oscillation of harm.With new energy
The extensive use greatly developed with power electronic technique in source, extensive new energy base, which is concatenated compensation or is sent out through direct current, is
There are the sub-synchronous oscillation phenomenons of frequency time-varying in system.Such as：The new energy of China's the first mends time of access transmission system through string
Synchronized oscillation accident is happened at Zhangjiakou Guyuan area, is had occurred so far much by wind turbine after this area's string is mended and put into operation within 2010
Sub-synchronous oscillation problem caused by group and string are mended, causes grid equipment operation exception and a large amount of wind turbine off-grids, seriously threatens power grid
Safe and stable operation.In recent years, successively there is sub-synchronous oscillation phenomenon in the wind power plant on the ground such as the Xinjiang in China, Jilin, Guangdong
Lead to a large amount of power grid accident.It can be seen that risk caused by sub-synchronous oscillation can not be ignored, in order to implement grid side reply
The strategy of sub-synchronous oscillation risk has gradually caused the extensive concern of academia and production run department.
Sub-synchronous oscillation suppressor mode traditional at present is generally set by installing sub-synchronous oscillation inhibition near thermal power plant
Standby to carry out sub-synchronous oscillation inhibition, the suppressor mode of the sub-synchronous oscillation needs the revolutional slip signal for acquiring Turbo-generator Set to obtain
To subsynchronous signal of the Turbo-generator Set shaft under fixed mode to inhibit sub-synchronous oscillation, since fixed mode is
The shaft of Turbo-generator Set can only generate intrinsic subsynchronous frequency signal during rotation, therefore traditional subsynchronous shake
The subsynchronous signal of other frequency ranges can not effectively be inhibited by swinging restraining device.
Invention content
Therefore, technical problems to be solved of the embodiment of the present invention are that traditional sub-synchronous oscillation in the prior art inhibits
Device can not effectively inhibit the subsynchronous signal of other frequency ranges.
For this purpose, an embodiment of the present invention provides following technical solutions：
The embodiment of the present invention provides a kind of sub-synchronous oscillation restraining device, including：
Signal collecting device connects the leading-out terminal of bus rod, for acquiring the electrical parameter information on transmission line of electricity, institute
It includes current parameters or voltage parameter or power parameter to state electrical parameter information；
Subsynchronous data extraction device connects the signal collecting device, for being extracted from the electrical parameter information
Subsynchronous signal；
Series transformer, primary side are separately connected the leading-out terminal of the bus rod and by terminal circuits；
MMC converter valves comprising several cascade MMC changes of current modules, the output end of the MMC converter valves are connected in parallel
The secondary side of the series transformer；
Control circuit is separately connected the input terminal of the subsynchronous data extraction device and the MMC converter valves, is used for
The output voltage for controlling the MMC converter valves changes to inhibit the subsynchronous signal.
Optionally, several described cascade MMC changes of current module composition MMC topological structures.
Optionally, each MMC changes of current module is bridge-type structure or semi-bridge type structure.
Optionally, the signal collecting device includes one kind in voltage transformer or current transformer or power transformer
Or it is several.
Optionally, the subsynchronous data extraction device further includes：
Filter connects the signal collecting device, the subsynchronous signal for being extracted to the signal collecting device
It is filtered；
Optionally, the subsynchronous data extraction device further includes：
Phase compensator connects the filter, for the subsynchronous signal after the filter filtering into
Row phase compensation and correction.
The embodiment of the present invention provides a kind of power grid output system, including the sub-synchronous oscillation restraining device, further includes：
Generation of electricity by new energy base comprising the input terminal in power grid is arranged in multiple generation of electricity by new energy stations, is used for the electricity
Net provides electric energy；
The bus rod connects the generation of electricity by new energy base, for exporting the multiple generation of electricity by new energy station
Electric energy collected.
Optionally, the generation of electricity by new energy station is wind power station or photo-voltaic power generation station.
The power grid output system further includes：Step-up transformer, primary side connect the outlet of the bus rod
End, secondary side connect the signal collecting device.
Technical solution of the embodiment of the present invention, has the following advantages that：
A kind of sub-synchronous oscillation restraining device of present invention offer and power grid output system, wherein sub-synchronous oscillation restraining device
Including signal collecting device, the leading-out terminal of bus rod is connected, it is subsynchronous for acquiring the electrical parameter information on transmission line of electricity
Data extraction device, connection signal collecting device, for extracting subsynchronous signal from electrical parameter information；Series transformer,
Its primary side is separately connected the leading-out terminal of bus rod and by terminal circuit；MMC converter valves comprising several cascade MMC are changed
The output end of flow module, MMC converter valves is connected in parallel the secondary side of series transformer；Control circuit is separately connected subsynchronous
The input terminal of data extraction device and MMC converter valves, the output voltage for controlling MMC converter valves, which changes, inhibits subsynchronous letter
Number.The sub-synchronous oscillation restraining device structure of the present invention is relatively simple, and signal collecting device acquires the electrical parameter on transmission line of electricity
Information can quickly inhibit the subsynchronous signal of the different frequency extracted from electrical parameter.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the structure diagram of sub-synchronous oscillation restraining device in the embodiment of the present invention 1；
Fig. 2 is that subsynchronous data extraction device carries out subsynchronous signal extraction and phase compensation in the embodiment of the present invention 1
Structural schematic diagram；
Fig. 3 is the MMC topological structure schematic diagrames of MMC converter valves in the embodiment of the present invention 1；
Fig. 4 is the first circuit diagram of each change of current module in the embodiment of the present invention 1；
Fig. 5 is the second circuit schematic diagram of each change of current module in the embodiment of the present invention 1；
Fig. 6 is the structural schematic diagram of power grid output system in the embodiment of the present invention 2；
Fig. 7 is the schematic diagram that sub-synchronous oscillation restraining device is installed by traditional thermal power plant in the embodiment of the present invention 2；
Fig. 8 is the Simulation of SAR power image figure that sub-synchronous oscillation restraining device inhibits subsynchronous signal in the embodiment of the present invention 2.
Reference numeral：
1- sub-synchronous oscillation restraining devices；11- signal collecting devices；The subsynchronous data extraction devices of 12-；
13- control circuits；14- series transformers；15-MMC converter valves；
21- generations of electricity by new energy base；22- bus rods；23- step-up transformers.
Specific implementation mode
The technical solution of the embodiment of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment be a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
The every other embodiment that logical technical staff is obtained without making creative work belongs to what the present invention protected
Range.
In the description of the embodiment of the present invention, it should be noted that term "center", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of the description embodiment of the present invention and simplifies to describe, not indicating or implying the indicated device or element must have
There is specific orientation, with specific azimuth configuration and operation, therefore is not considered as limiting the invention.In addition, term " the
One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.
In the description of the embodiment of the present invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can also be the connection inside two elements, can be wirelessly connected, can also be wired connection.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can be combined with each other at conflict.
Embodiment 1
The embodiment of the present invention provides a kind of sub-synchronous oscillation restraining device 1, as shown in Figure 1, including：Signal collecting device
11, subsynchronous data extraction device 12, series transformer 14, MMC converter valves 15 and control circuit 13, wherein MMC converter valves 15
Including several cascade MMC changes of current modules.Signal collecting device 11, subsynchronous data extraction device 12, series transformer 14,
MMC converter valves 15 and control circuit 13 may be located on the power transmission line that can be arranged being connect with the leading-out terminal of bus rod 22
On the road.
Specifically, signal collecting device 11 connect the leading-out terminal of bus rod 22, for acquiring the electricity on transmission line of electricity
Parameter information, the electrical parameter information include current parameters or voltage parameter or power parameter.Signal collecting device 11 herein can
To be voltage transformer or current transformer or power transformer, why it connects bus rod 22 to signal collecting device 11
Leading-out terminal is because can directly acquire out the electrical parameter information on grid side transmission line of electricity and then can obtain new energy wind-powered electricity generation
The total subsynchronous signal in field simultaneously carries out concentrated restraining.The electrical parameter information that signal collecting device 11 is acquired is mainly transmission line of electricity
On first voltage USWith the first electric current IS, on the transmission line of electricity between the leading-out terminal and MMC converter valves 15 of bus rod 22
Two electric current IL, utilize voltage transformer acquisition first voltage US, the first electric current I is acquired using current transformerS, the second electric current IL,
Three-phase current I on transmission line of electricityLa1、ILb1And ILc1.Signal collecting device 11 can acquire power grid transmission line road different frequency
The subsynchronous signal of range, and then the sub-synchronous oscillation restraining device in the present embodiment can be to the subsynchronous of different frequency scope
Signal can be carried out effectively inhibiting.
Subsynchronous data extraction device 12, connection signal collecting device 11 are secondary same for being extracted from electrical parameter information
Walk signal.Subsynchronous data extraction device 12 herein can be dector in the prior art.Specifically, according to first
Electric current ISWith the second electric current ILDetermine subsynchronous current signal.Specifically, subsynchronous data extraction device 12 from signal acquisition to setting
The the second electric current I acquired in standby 11LIt carries out d-q coordinate transforms and obtains the third electric current I under d-q coordinate systemsLdWith the 4th electric current ILq,
The first electric current I where obtaining the leading-out terminal of bus rod 22 on transmission line of electricitySWith first phase θp, extraction third electric current ILd's
Subsynchronous electric current ILd1With the 4th electric current ILqSubsynchronous electric current ILq2。
Subsynchronous data extraction device 12 further includes filter and phase compensator, wherein its connection signal of phase compensator
Collecting device 11, the subsynchronous signal for being extracted to signal collecting device 11 are filtered.Phase compensator, connection filtering
Device, for carrying out phase compensation and correction to the subsynchronous signal after filter filtering.Phase compensator herein is existing skill
The phase compensator being commonly used in art, internal phase compensation parameter be it is pre-set, due to subsynchronous signal with
Actual subsynchronous signal can have certain offset on transmission line of electricity, and its phase offset of different frequency is different, in order to
So that acquired subsynchronous signal is more accurate, inhibits subsynchronous signal ideal, therefore need phase compensator.Specifically
Ground, as shown in Fig. 2, subsynchronous data extraction device 12 acquires signal collecting device 11 the three-phase current I on transmission line of electricityLa1、
ILb1And ILc1It is coordinately transformed, the second electric current I acquired in signal collecting device 11LIt carries out d-q coordinate transforms and obtains d-q seats
Third electric current I under mark systemLdWith the 4th electric current ILq, the first electricity where obtaining the leading-out terminal of bus rod 22 on transmission line of electricity
Flow ISWith first phase θp, first phase θpIt is obtained by phaselocked loop, finally according to the third electric current I after coordinate transformLdWith the 4th
Electric current iLqExtract third electric current ILdSubsynchronous electric current ILd1With the 4th electric current ILqSubsynchronous electric current ILq2, similarly and to first
Voltage Us carries out d-q coordinate transforms and obtains the second voltage U under d-q coordinate systemssq1With tertiary voltage Usq2, to third electric current ILdWith
4th electric current ILqIt carries out phase compensation and corrects and obtain the subsynchronous electric current I of phase compensationLd1Subsynchronous electric current ILq2。
Series transformer 14, primary side a are separately connected the leading-out terminal of bus rod 22 and by terminal circuits 20.In Fig. 1,
It can be seen that the secondary side of series transformer 14 is b, primary side a, the secondary side b of series transformer 14 are connected in parallel MMC and change
Valve 15 is flowed, the primary side a of series transformer 14 is separately connected the leading-out terminal of bus rod 22 and by terminal circuit 20, series transformer
Impedance matching may be implemented in 14 one side, on the other hand realizes and presses down for being injected to the output end of sub-synchronous oscillation restraining device 1
Make the output voltage of subsynchronous signal.
In Fig. 1, MMC converter valves 15, output end connect the secondary side b of series transformer 14, MMC converter valves herein
It is connected in parallel series transformer 14.As shown in figure 3, MMC converter valves 15 include several cascade MMC changes of current modules, such as Fig. 3 institutes
Show, each MMC changes of current module cascades successively constitutes MMC topological structures.As shown in figure 4, each MMC change of current modules include two
IGBT device T1、T2And the first capacitance C being connected in parallel between each MMC converter valves1Form semi-bridge type structure.As shown in figure 5, every
A MMC changes of current module includes four IGBT device T3、T4、T5、T6、.And second be connected in parallel between each MMC change current valve modules
Capacitance C2Form bridge-type structure.
In Fig. 1, main function of the MMC converter valves 15 in the present embodiment sub-synchronous oscillation restraining device 1 is for inciting somebody to action
The electric energy of power grid output carries out the change of current, can be used as switching device, MMC converter valves 15 may be implemented by or off will be straight
Galvanic electricity inversion is the alternating current of some frequency or variable frequency, finally so that MMC converter valves under the action of pulse width is modulated
15 output voltage, which changes, to be realized and Power Exchange is occurred to inhibit subsynchronous signal by terminal circuit 20.
Control circuit 13 is separately connected the input terminal of subsynchronous data extraction device 12 and MMC converter valves 15, for controlling
The output voltage of MMC converter valves 15 processed, which changes, inhibits the subsynchronous signal.Control circuit 13 herein mainly applies existing skill
Controller in art, for generating pulse triggering signal, controlling the MMC change of current modules conducting progress pulsewidth modulation of preset quantity makes
The output voltage for obtaining MMC converter valves changes the subsynchronous signal of inhibition.Specifically, the start pulse signal that control circuit 13 generates is used
It is controlled in the break-make to the IGBT device inside MMC converter valves 15, changes the size of the output voltage of MMC converter valves 15,
Eventually by series transformer 14 to the output voltage by the subsynchronous signal of the injection inhibition of terminal circuit 20.Control circuit 13 is specifically led
Which MMC converter valve led to, the MMC changes of current for according to sort algorithm calculate conducting preset quantity according to control circuit 13 are needed
Valve.
Embodiment 2
The embodiment of the present invention provides a kind of power grid output system, as shown in fig. 6, including the sub-synchronous oscillation in embodiment 1
Restraining device 1 further includes：Generation of electricity by new energy base 21, bus rod 22, wherein it includes step-up transformer 221 to collect station 22；Its
Middle sub-synchronous oscillation restraining device 1 includes signal collecting device 11, subsynchronous data extraction device 12, series transformer 14, MMC
Converter valve 15 and control circuit 13.Signal collecting device 11, subsynchronous data extraction device 12, series transformer 14, the MMC changes of current
Valve 15 and control circuit 13 may be located on the transmission line of electricity where the leading-out terminal of bus rod 22, and sub-synchronous oscillation inhibits
The output end of device 1 is generally connect with by terminal circuit 20.The structure of sub-synchronous oscillation restraining device 1 in the present embodiment is also more
Simply, pass through signal collecting device 11, subsynchronous data extraction device 12, series transformer 14, MMC converter valves 15 and control electricity
Road 13 can quickly and effectively inhibit the subsynchronous signal on transmission line of electricity.
Generation of electricity by new energy base 21 comprising the input terminal in power grid is arranged in multiple generation of electricity by new energy stations, is used for power grid
Electric energy is provided.Generation of electricity by new energy base 21 herein can be wind power station or photo-voltaic power generation station, and wherein wind power station can
Think direct-drive wind power generation or double-fed wind generating.New energy is unconventional energy resource, refers to the various energy except traditional energy
Form, refer to just start develop and use or actively study, refer to the energy for needing to be promoted, as solar energy, geothermal energy, wind energy,
Ocean energy, biomass energy and nuclear fusion energy etc., and wind energy and solar energy are mainly applied in generation of electricity by new energy base 21 in the present embodiment,
Wind energy and solar energy can be converted to electric energy power supply network respectively and largely used by wind power station and photo-voltaic power generation station, be more clear
The clean and environmentally friendly energy.Traditional power generation base is generally generated electricity using steam turbine generator, and a kind of mode of thermal power generation is belonged to.
As shown in fig. 7, in order to inhibit the subsynchronous signal of power grid transmission line road, generally sub-synchronous oscillation restraining device 1 is mounted on
Near thermal power plant, the revolutional slip signal by acquiring steam turbine generator obtains steam turbine generator respective shaft and ties up to fixed mode next time
Synchronous frequency signal can only carry out for inhibition, to the subsynchronous letter of other frequency ranges the specific subsynchronous frequency
Number can not effectively it be inhibited.And the sub-synchronous oscillation restraining device 1 in the present embodiment be mounted on collect station 22 input terminal with
Between the output end of sub-synchronous oscillation restraining device 1, grid side transmission line of electricity can directly be acquired by signal collecting device 11
On subsynchronous signal, therefore concentrated restraining can be carried out to wind power plant sub-synchronous oscillation, but wind-powered electricity generation randomness is big, the system containing wind-powered electricity generation
The sub-synchronous oscillation range of generation is not fixed.So the subsynchronous signal acquiring method of the fixed frequency in compared with the prior art,
Using the subsynchronous method for extracting signal of broadband, the sub-synchronous oscillation signal of wide scope can be accurately obtained in the present embodiment.Such as：
Generation of electricity by new energy base 21 in the present embodiment is wind power station, and multiple wind power stations more disperse, frequency range
It is larger so that fan operation state is affected by wind speed, if being acquired wind turbine shafting using traditional thermoelectricity mode
Between subsynchronous information it is more difficult.
In figure 6, bus rod 22, connection generation of electricity by new energy base 21, for exporting multiple generation of electricity by new energy stations
Electric energy collected.Bus rod 22 concentrates the electric energy for collecting multiple generation of electricity by new energy station outputs, and it is more to be conducive to concentrated restraining
A generation of electricity by new energy station is grid-connected collect after the sub-synchronous oscillation phenomenon that occurs, cost can be greatly reduced.Step-up transformer 23 is led
It is used to boost to the voltage that bus rod 22 exports, the primary side of step-up transformer 23 can connect bus rod 22
Leading-out terminal, secondary side connection signal collecting device 11.Certainly, the connection type of the primary side of step-up transformer 23 and secondary side
It can be interchanged, i.e. the primary side connection signal collecting device 11 of step-up transformer 23, the secondary side connection of step-up transformer 23 converges
Flow the leading-out terminal of busbar 22.
As shown in figure 8, being sent out using multiple wind-force for the generation of electricity by new energy base 21 in power grid output system in the present embodiment
During power station is generated electricity, the Simulation of SAR power image figure of power grid output system when sub-synchronous oscillation occurs, in fig. 8, when 6.5s
The sub-synchronous oscillation restraining device 1 in the present embodiment is put into, is measured from line power upper, it is apparent that subsynchronous in generation
When oscillation, power is in the state of self-sustained oscillation, and after the sub-synchronous oscillation restraining device 1 in putting into the present embodiment, power shakes
It swings and is quickly stabilized, restore to stablize.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (9)
1. a kind of sub-synchronous oscillation restraining device, which is characterized in that including：
Signal collecting device connects the leading-out terminal of bus rod, for acquiring the electrical parameter information on transmission line of electricity, the electricity
Parameter information includes current parameters or voltage parameter or power parameter；
Subsynchronous data extraction device connects the signal collecting device, secondary same for being extracted from the electrical parameter information
Walk signal；
Series transformer, primary side are separately connected the leading-out terminal of the bus rod and by terminal circuits；
MMC converter valves comprising several cascade MMC changes of current modules, the output ends of the MMC converter valves are connected in parallel described
The secondary side of series transformer；
Control circuit is separately connected the input terminal of the subsynchronous data extraction device and the MMC converter valves, for controlling
The output voltage of the MMC converter valves changes to inhibit the subsynchronous signal.
2. sub-synchronous oscillation restraining device according to claim 1, which is characterized in that several described cascade MMC are changed
Flow module constitutes MMC topological structures.
3. sub-synchronous oscillation restraining device according to claim 2, which is characterized in that each MMC change of current modules are full-bridge
Type structure or semi-bridge type structure.
4. sub-synchronous oscillation restraining device according to claim 1, the signal collecting device include voltage transformer or
One or more of current transformer or power transformer.
5. sub-synchronous oscillation restraining device according to claim 1, which is characterized in that the subsynchronous data extraction device
Further include：
Filter connects the signal collecting device, and the subsynchronous signal for being extracted to the signal collecting device carries out
Filtering.
6. sub-synchronous oscillation restraining device according to claim 5, which is characterized in that the subsynchronous data extraction device
Further include：
Phase compensator connects the filter, for carrying out phase to the subsynchronous signal after the filter filtering
Position compensation and correction.
7. a kind of power grid output system, which is characterized in that inhibit to fill including claim 1-6 any one of them sub-synchronous oscillations
It sets, further includes：
Generation of electricity by new energy base comprising the input terminal in power grid is arranged in multiple generation of electricity by new energy stations, for being carried to the power grid
For electric energy；
The bus rod connects the generation of electricity by new energy base, the electricity for exporting the multiple generation of electricity by new energy station
It can be collected.
8. power grid output system according to claim 7, which is characterized in that the generation of electricity by new energy station is wind power station
Or photo-voltaic power generation station.
9. power grid output system according to claim 7, which is characterized in that further include：Step-up transformer, for described
The voltage of bus rod output boosts.
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| CN103124077A (en) * | 2011-11-18 | 2013-05-29 | 北京睿能世纪科技有限公司 | System and method for suppressing sub-synchronous resonance of generating set |
| CN105515020A (en) * | 2016-01-19 | 2016-04-20 | 思源清能电气电子有限公司 | Sub-synchronous oscillation suppression control method and system based on SVG |
| CN106130038A (en) * | 2016-06-24 | 2016-11-16 | 全球能源互联网研究院 | The grid side sub-synchronous oscillation restraining device that a kind of new forms of energy base goes out through string by-carriage |
| CN106505592A (en) * | 2016-12-22 | 2017-03-15 | 北京四方继保自动化股份有限公司 | A kind of flexible direct current additional control method for suppressing sub-synchronous oscillation |
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2018
- 2018-05-08 CN CN201810432364.5A patent/CN108667045A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103124077A (en) * | 2011-11-18 | 2013-05-29 | 北京睿能世纪科技有限公司 | System and method for suppressing sub-synchronous resonance of generating set |
| CN105515020A (en) * | 2016-01-19 | 2016-04-20 | 思源清能电气电子有限公司 | Sub-synchronous oscillation suppression control method and system based on SVG |
| CN106130038A (en) * | 2016-06-24 | 2016-11-16 | 全球能源互联网研究院 | The grid side sub-synchronous oscillation restraining device that a kind of new forms of energy base goes out through string by-carriage |
| CN106505592A (en) * | 2016-12-22 | 2017-03-15 | 北京四方继保自动化股份有限公司 | A kind of flexible direct current additional control method for suppressing sub-synchronous oscillation |
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