CN108777489A - 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
- Publication number
- CN108777489A CN108777489A CN201810432363.0A CN201810432363A CN108777489A CN 108777489 A CN108777489 A CN 108777489A CN 201810432363 A CN201810432363 A CN 201810432363A CN 108777489 A CN108777489 A CN 108777489A
- Authority
- CN
- China
- Prior art keywords
- sub
- electricity
- subsynchronous
- synchronous oscillation
- signal
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
- H02J3/002—Flicker reduction, e.g. compensation of flicker introduced by non-linear load
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention discloses a kind of sub-synchronous oscillation restraining device and power grid output system, sub-synchronous oscillation restraining device include：Signal collecting device connects the leading-out terminal of bus rod, and for acquiring the electrical parameter information on transmission line of electricity, electrical parameter information includes current parameters or voltage parameter or power parameter；Subsynchronous data extraction device, connection signal collecting device, for extracting subsynchronous signal from electrical parameter information；Series transformer, primary side are separately connected the leading-out terminal of bus rod with by terminal circuit, and bridge inverter, output end is connected in parallel the secondary side of series transformer；Control circuit is separately connected the input terminal of subsynchronous data extraction device and bridge inverter, and the output voltage for controlling bridge inverter changes, and inhibits sub-synchronous oscillation.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 different electrical parameters.
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 restraining device can not be to it
The subsynchronous signal of its frequency range is effectively inhibited.
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 be separately connected the leading-out terminal of the bus rod with by terminal circuit,
Bridge inverter, output end 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 bridge inverter, uses
Change in the output voltage for controlling the bridge inverter, to inhibit the sub-synchronous oscillation.
Optionally, the bridge inverter includes multiple change of current modules, and each change of current module cascades successively.
Optionally, each change of current module is bridge-type structure or semi-bridge type structure.
Optionally, each change of current module cascades successively constitutes transverter topological 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.
Optionally, the power grid output system further includes：Step-up transformer, for what is exported to the bus rod
Voltage boosts.
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, sub-synchronous oscillation restraining device packet
It includes：Signal collecting device connects the leading-out terminal of bus rod, for acquiring the electrical parameter information on transmission line of electricity, electrical parameter
Information includes current parameters or voltage parameter or power parameter；Subsynchronous data extraction device, connection signal collecting device are used
In extracting subsynchronous signal from electrical parameter information；Series transformer, primary side be separately connected the leading-out terminal of bus rod with by
Terminal circuit；Bridge inverter, output end are connected in parallel the secondary side of series transformer；Control circuit is separately connected secondary same
The input terminal for walking data extraction device and bridge inverter, the output voltage for controlling bridge inverter change to inhibit secondary
Synchronized oscillation.The sub-synchronous oscillation restraining device structure of the present invention is relatively simple, and signal collecting device acquires on transmission line of electricity
Electrical parameter 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 the structure that subsynchronous data extraction device carries out subsynchronous extraction and phase compensation in the embodiment of the present invention 1
Schematic diagram；
Fig. 3 is the topological structure schematic diagram of bridge inverter 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 electricity
Road；14- series transformers；15- bridge inverters；
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, bridge inverter 15 and control circuit 13.Signal collecting device 11,
Subsynchronous data extraction device 12, series transformer 14, bridge inverter 15 and control circuit 13 can be arranged female with confluence
On the transmission line of electricity of the leading-out terminal connection of line 22.
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 electric field
Total subsynchronous signal simultaneously carries out concentrated restraining.The electrical parameter information that signal collecting device 11 is acquired is mainly on transmission line of electricity
First voltage USWith the first electric current IS, on the transmission line of electricity between the leading-out terminal and bridge inverter 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。
In Fig. 1, 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, the secondary side b parallel connections of primary side a, series transformer 14 connect
Bridge inverter 15 is connect, the primary side a of series transformer 14 is separately connected the leading-out terminal of bus rod 22 and by terminal circuit 20, string
The primary side a of connection transformer 14 is also connected with signal collecting device 11, and impedance matching may be implemented in 14 one side of series transformer, separately
On the one hand the output voltage for inhibiting subsynchronous signal to the injection of the output end of sub-synchronous oscillation restraining device 1 is realized.
In Fig. 1, bridge inverter 15, output end are connected in parallel the secondary side b of series transformer 14, bridge-type herein
Transverter 15 is connected in parallel series transformer 14.As shown in figure 3, bridge inverter 15 includes multiple change of current modules, each change of current
Module cascades successively.Each change of current module can be H bridge transverters, and each H bridges transverter cascades successively constitutes transverter topology
Structure.Specifically, as shown in Figure 3 and Figure 4, each H bridges transverter includes four IGBT device T1、T2、T3、T4It is every with being connected in parallel on
The first capacitance C between a H bridges transverter1Form bridge-type structure.As other interchangeable embodiments, in the present embodiment
Each change of current module can also be semi-bridge type structure, composition semi-bridge type structure each change of current module cascade successively composition the change of current
Device topological structure.As shown in figure 5, each change of current module includes two IGBT device T5、T6Be connected in parallel on each half-bridge transverter it
Between the second capacitance C2Form semi-bridge type structure.
In Fig. 1, main function of the bridge inverter 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, bridge inverter 15 by or off may be implemented by
DC inverter is the alternating current of some frequency or variable frequency, finally under the action of pulse width is modulated, the bridge convertor
The output voltage of device 15, which changes, to be realized and Power Exchange is occurred to inhibit sub-synchronous oscillation by terminal circuit 20.
Control circuit 13 is separately connected the input terminal of subsynchronous data extraction device 12 and bridge inverter 15, is used for
The output voltage for controlling bridge inverter 15 changes the subsynchronous signal of inhibition.Control circuit 13 herein mainly applies the prior art
In controller control the IGBT device inside bridge inverter 15 for generating start pulse signal and be connected to obtain and control
13 valve control of circuit instructs consistent output voltage, you can the size for changing the output voltage of bridge inverter 15, to finally lead to
Series transformer 14 is crossed to the output voltage for being inhibited subsynchronous signal by the injection of terminal circuit 20.
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, step-up transformer 23；Wherein sub-synchronous oscillation inhibits
Device 1 includes signal collecting device 11, subsynchronous data extraction device 12, series transformer 14, bridge inverter 15 and control
Circuit 13.Signal collecting device 11, subsynchronous data extraction device 12, series transformer 14, bridge inverter 15 and control electricity
Road 13 may be located on the transmission line of electricity where the leading-out terminal of bus rod 22, the primary side of series transformer 14 respectively with
The leading-out terminal of bus rod 22 is connect with by terminal circuit 20.The structure of sub-synchronous oscillation restraining device 1 in the present embodiment also compared with
To be simple, pass through signal collecting device 11, subsynchronous data extraction device 12, series transformer 14, bridge inverter 15 and control
Circuit 13 processed 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 on the transmission line of electricity where the leading-out terminal of the bus rod in the present embodiment, it is adopted by signal
Collection equipment 11 can directly acquire the subsynchronous signal on grid side transmission line of electricity, therefore can collect to wind power plant sub-synchronous oscillation
Middle inhibition, but wind-powered electricity generation randomness is big, and the sub-synchronous oscillation range that the system containing wind-powered electricity generation generates is not fixed.So in the prior art
The subsynchronous signal acquiring method of fixed frequency can be accurate in the present embodiment using broadband subsynchronous method for extracting signal
Obtain the sub-synchronous oscillation signal of wide scope.Such as：Generation of electricity by new energy base 21 in the present embodiment is wind power station, multiple
Wind power station more disperses, and frequency range is larger so that fan operation state is affected by wind speed, if used
The subsynchronous information that traditional thermoelectricity mode is acquired between wind turbine shafting 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 used
It boosts in the voltage exported to bus rod 22.The leading-out terminal of the primary side connection bus rod 22 of step-up transformer 23,
Its secondary side connection signal collecting device 11.Certainly, the connection type of the primary side of step-up transformer 23 and secondary side can be mutual
It changes, i.e. the primary side connection signal collecting device 11 of step-up transformer 23, the secondary side of step-up transformer 23 connects bus rod
22 leading-out terminal.
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 figure 6, 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 (10)
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 be separately connected the leading-out terminal of the bus rod with by terminal circuit,
Bridge inverter, output end 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 bridge inverter, for controlling
The output voltage for making the bridge inverter changes, to inhibit the sub-synchronous oscillation.
2. sub-synchronous oscillation restraining device according to claim 1, which is characterized in that the bridge inverter includes multiple
Change of current module, each change of current module cascade successively.
3. sub-synchronous oscillation restraining device according to claim 2, which is characterized in that each change of current module is full-bridge
Type structure or semi-bridge type structure.
4. sub-synchronous oscillation restraining device according to claim 2, which is characterized in that each change of current module grade successively
Connection constitutes transverter topological structure.
5. sub-synchronous oscillation restraining device according to claim 1, which is characterized in that the signal collecting device includes electricity
Press mutual inductor or one or more of current transformer or power transformer.
6. 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.
7. sub-synchronous oscillation restraining device according to claim 6, 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.
8. a kind of power grid output system, which is characterized in that inhibit to fill including claim 1-7 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.
9. power grid output system according to claim 8, which is characterized in that the generation of electricity by new energy station is wind power station
Or photo-voltaic power generation station.
10. power grid output system according to claim 9, which is characterized in that further include：Step-up transformer, for institute
The voltage for stating bus rod output boosts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810432363.0A CN108777489A (en) | 2018-05-08 | 2018-05-08 | A kind of sub-synchronous oscillation restraining device and power grid output system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810432363.0A CN108777489A (en) | 2018-05-08 | 2018-05-08 | A kind of sub-synchronous oscillation restraining device and power grid output system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108777489A true CN108777489A (en) | 2018-11-09 |
Family
ID=64026936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810432363.0A Pending CN108777489A (en) | 2018-05-08 | 2018-05-08 | A kind of sub-synchronous oscillation restraining device and power grid output system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108777489A (en) |
Citations (4)
| 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 |
| CN106300392A (en) * | 2016-10-21 | 2017-01-04 | 国网新疆电力公司电力科学研究院 | Wind energy turbine set sub-synchronous oscillation suppressor multimachine control method for coordinating |
-
2018
- 2018-05-08 CN CN201810432363.0A patent/CN108777489A/en active Pending
Patent Citations (4)
| 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 |
| CN106300392A (en) * | 2016-10-21 | 2017-01-04 | 国网新疆电力公司电力科学研究院 | Wind energy turbine set sub-synchronous oscillation suppressor multimachine control method for coordinating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103326368B (en) | Double-fed fan motor unit dynamic reactive current direct control method during electric network fault | |
| CN103560524B (en) | Low voltage ride-through system and method of double-fed asynchronous wind generating unit based on dynamic voltage restorer (DVR) | |
| CN108718094A (en) | A method of it improving large-sized photovoltaic system low-voltage and passes through performance | |
| CN104377699B (en) | For the mixing induction type active power filtering of wind power plant and reactive compensation system and method | |
| CN104218573A (en) | Control method of MMC-HVDC (multi media card-high voltage direct current) during power grid malfunction of receiving end | |
| CN113746129A (en) | Impedance model obtaining method and device for direct-drive wind power plant through LCC-HVDC sending-out system | |
| CN105098833A (en) | Asynchronous constant speed wind turbine system for micro grid and working method thereof | |
| CN105162139A (en) | Complex optimal control method for reactive power of wind power system in grid voltage sag fault | |
| CN105281366A (en) | Method for simultaneously realizing low-voltage ride through and island detection | |
| CN102064714B (en) | Doubly-fed wind power frequency converter | |
| Carr et al. | Modular multilevel converter for direct MVDC connection of offshore wind farms | |
| CN103795082B (en) | A kind of distributed power source connects net controller and control method | |
| CN109004657B (en) | Method and system for suppressing subsynchronous oscillation of wind power plant | |
| CN108390399A (en) | A kind of sub-synchronous oscillation restraining device and power grid output system | |
| CN201829955U (en) | Dynamic voltage stabilizer for helping wind power generator to implement low voltage ride-through | |
| CN208257419U (en) | A kind of sub-synchronous oscillation inhibits device and power grid output system | |
| CN208257418U (en) | A kind of sub-synchronous oscillation inhibits device and power grid output system | |
| CN104682444A (en) | Control method of permanent magnetic direct drive type wind power system converter of power grid | |
| CN104362672A (en) | Wind power generation system | |
| CN208581066U (en) | A kind of sub-synchronous oscillation inhibits device and power grid output system | |
| CN108777489A (en) | A kind of sub-synchronous oscillation restraining device and power grid output system | |
| Patel et al. | Application of static compensator to improve the power quality of grid connected induction generator based wind farm | |
| Dong et al. | Low voltage ride through capability enhancement of PMSG-based wind turbine | |
| CN108667045A (en) | A kind of sub-synchronous oscillation restraining device and power grid output system | |
| CN208257420U (en) | A kind of sub-synchronous oscillation inhibits device and power grid output system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 102209 18 Riverside Avenue, Changping District science and Technology City, Beijing Applicant after: Global energy Internet Institute, Inc. Applicant after: State Grid Corporation of China Address before: 102209 18 Riverside Avenue, Changping District science and Technology City, Beijing Applicant before: Global energy Internet Institute, Inc. Applicant before: State Grid Corporation of China |
|
| CB02 | Change of applicant information |