Frequency Control Strategy of DFIGs based on Improved Virtual Inertia Method

Abstract The DFIGs can participate in frequency control by virtual inertia method. After exiting the frequency control, secondary frequency drop will occur inevitably. The current study of the problem mostly focused on the rotor speed recovery strategy and PD control parameter optimization problems,...

Full description

Saved in:
Bibliographic Details
Published inIOP conference series. Earth and environmental science Vol. 838; no. 1; pp. 12010 - 12017
Main Authors Gao, Zhimin, Cao, Yongji, Zhang, Hengxu, Qin, Hao, Yang, Dong, Ma, Huan
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.08.2021
Subjects
Control methods
Frequency control
Frequency dependence
Frequency modulation
Inertia
Load fluctuation
Optimization
Rotor speed
Turbines
Online AccessGet full text

Cover

Abstract Abstract The DFIGs can participate in frequency control by virtual inertia method. After exiting the frequency control, secondary frequency drop will occur inevitably. The current study of the problem mostly focused on the rotor speed recovery strategy and PD control parameter optimization problems, which cannot eliminate the phenomenon of secondary frequency drop in essence. This paper proposes a frequency control strategy based on the improved virtual inertia control method. When the DFIG exits the frequency modulation process, the supplementary control component based on the turbine speed is added to avoid the sudden drop of output power, so as to suppress the secondary frequency drop. Finally, a simulation model is built in Matlab/Simulink, and the feasibility of the proposed strategy is verified in two case studies of power system frequency reduction and load fluctuation.
AbstractList The DFIGs can participate in frequency control by virtual inertia method. After exiting the frequency control, secondary frequency drop will occur inevitably. The current study of the problem mostly focused on the rotor speed recovery strategy and PD control parameter optimization problems, which cannot eliminate the phenomenon of secondary frequency drop in essence. This paper proposes a frequency control strategy based on the improved virtual inertia control method. When the DFIG exits the frequency modulation process, the supplementary control component based on the turbine speed is added to avoid the sudden drop of output power, so as to suppress the secondary frequency drop. Finally, a simulation model is built in Matlab/Simulink, and the feasibility of the proposed strategy is verified in two case studies of power system frequency reduction and load fluctuation.
Abstract The DFIGs can participate in frequency control by virtual inertia method. After exiting the frequency control, secondary frequency drop will occur inevitably. The current study of the problem mostly focused on the rotor speed recovery strategy and PD control parameter optimization problems, which cannot eliminate the phenomenon of secondary frequency drop in essence. This paper proposes a frequency control strategy based on the improved virtual inertia control method. When the DFIG exits the frequency modulation process, the supplementary control component based on the turbine speed is added to avoid the sudden drop of output power, so as to suppress the secondary frequency drop. Finally, a simulation model is built in Matlab/Simulink, and the feasibility of the proposed strategy is verified in two case studies of power system frequency reduction and load fluctuation.
Author Qin, Hao
Ma, Huan
Yang, Dong
Zhang, Hengxu
Gao, Zhimin
Cao, Yongji
Author_xml – sequence: 1
  givenname: Zhimin
  surname: Gao
  fullname: Gao, Zhimin
  organization: Key Laboratory of Power System Intelligent Dispatch and Control of the Ministry of Education, Shandong University , China
– sequence: 2
  givenname: Yongji
  surname: Cao
  fullname: Cao, Yongji
  organization: Key Laboratory of Power System Intelligent Dispatch and Control of the Ministry of Education, Shandong University , China
– sequence: 3
  givenname: Hengxu
  surname: Zhang
  fullname: Zhang, Hengxu
  organization: Key Laboratory of Power System Intelligent Dispatch and Control of the Ministry of Education, Shandong University , China
– sequence: 4
  givenname: Hao
  surname: Qin
  fullname: Qin, Hao
  organization: Key Laboratory of Power System Intelligent Dispatch and Control of the Ministry of Education, Shandong University , China
– sequence: 5
  givenname: Dong
  surname: Yang
  fullname: Yang, Dong
  organization: State Grid Shandong Electric Power Research Institute, State Grid Shandong Electric Power Company , China
– sequence: 6
  givenname: Huan
  surname: Ma
  fullname: Ma, Huan
  organization: State Grid Shandong Electric Power Research Institute, State Grid Shandong Electric Power Company , China
BookMark eNqFkE1LAzEQhoNUsFb_ggS8eFk7SfYje5Ta1oWKh6rXkOZDt7SbNdkK_femrFQEwdPMkGfeDM85GjSuMQhdEbglwPmYFFmWEEayMWdxGgOhQOAEDY8Pg2MPxRk6D2ENkBcpK4doMfPmY2catccT13TebfCy87Izb3vsLL6fVfOAVzIYjV2Dq23r3WfsX2vf7eQGV43xXS3xo-nenb5Ap1Zugrn8riP0Mps-Tx6SxdO8mtwtEsUohYQpTrhR0oK1KXAiTW5WeUE1pEBTRfkqszRTyhjNNPCSlzrlxjJdmpLTvGAjdN3nxmvi8aETa7fzTfxS0CxnHHIOWaTynlLeheCNFa2vt9LvBQFxMCcOUsRBkIjmBBG9ubh40y_Wrv1Jnk6XvzDRahtR-gf6T_4XQ4x9gw
CitedBy_id crossref_primary_10_3390_electronics13020279
Cites_doi 10.1109/TSTE.2018.2848923
10.1109/TEC.2017.2698212
10.1109/TPWRS.2016.2605012
10.1109/TPWRS.2020.2985843
10.1109/TPWRS.2018.2801283
10.1109/TPWRS.2018.2829748
10.1109/TPWRS.2020.2967468
10.1109/TII.2019.2924662
10.1109/TPWRS.2019.2939411
10.1109/TPWRS.2017.2761897
10.1109/TSTE.2015.2508792
10.1109/TEC.2016.2537539
10.1109/TPWRS.2005.861956
10.1109/TPWRS.2019.2943520
10.1109/TSTE.2020.3032478
10.1109/TSTE.2017.2710624
10.1109/TSTE.2018.2856938
10.1109/ACCESS.2019.2937180
10.1109/TEC.2017.2696510
10.1109/TPWRS.2015.2417758
10.1109/TSTE.2017.2754522
ContentType Journal Article
Copyright Published under licence by IOP Publishing Ltd
2021. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
Copyright_xml – notice: Published under licence by IOP Publishing Ltd
– notice: 2021. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
DBID O3W
TSCCA
AAYXX
CITATION
ABUWG
AFKRA
ATCPS
AZQEC
BENPR
BHPHI
CCPQU
DWQXO
GNUQQ
HCIFZ
PATMY
PIMPY
PQEST
PQQKQ
PQUKI
PRINS
PYCSY
DOI 10.1088/1755-1315/838/1/012010
DatabaseName Open Access: IOP Publishing Free Content
IOPscience (Open Access)
CrossRef
ProQuest Central (Alumni)
ProQuest Central
Agricultural & Environmental Science Collection
ProQuest Central Essentials
AUTh Library subscriptions: ProQuest Central
ProQuest Natural Science Collection
ProQuest One Community College
ProQuest Central
ProQuest Central Student
SciTech Premium Collection
Environmental Science Database
Publicly Available Content Database
ProQuest One Academic Eastern Edition (DO NOT USE)
ProQuest One Academic
ProQuest One Academic UKI Edition
ProQuest Central China
Environmental Science Collection
DatabaseTitle CrossRef
Publicly Available Content Database
ProQuest Central Student
ProQuest Central Essentials
ProQuest One Academic Eastern Edition
ProQuest Central (Alumni Edition)
SciTech Premium Collection
ProQuest One Community College
ProQuest Central China
ProQuest Central
Environmental Science Collection
ProQuest One Academic UKI Edition
Natural Science Collection
ProQuest Central Korea
Agricultural & Environmental Science Collection
Environmental Science Database
ProQuest One Academic
DatabaseTitleList Publicly Available Content Database
CrossRef
Database_xml – sequence: 1
  dbid: O3W
  name: Open Access: IOP Publishing Free Content
  url: http://iopscience.iop.org/
  sourceTypes:
    Enrichment Source
    Publisher
– sequence: 2
  dbid: BENPR
  name: AUTh Library subscriptions: ProQuest Central
  url: https://www.proquest.com/central
  sourceTypes: Aggregation Database
DeliveryMethod fulltext_linktorsrc
Discipline Geology
EISSN 1755-1315
ExternalDocumentID 10_1088_1755_1315_838_1_012010
EES_838_1_012010
GroupedDBID 1JI
2WC
4.4
5B3
5GY
5VS
AAFWJ
AAJIO
AAJKP
ABHWH
ACAFW
ACHIP
AEFHF
AEJGL
AFKRA
AFYNE
AHSEE
AIYBF
AKPSB
ALMA_UNASSIGNED_HOLDINGS
ASPBG
ATCPS
ATQHT
AVWKF
AZFZN
BENPR
BHPHI
CCPQU
CEBXE
CJUJL
CRLBU
CS3
DU5
EDWGO
EQZZN
HCIFZ
IJHAN
IOP
IZVLO
KNG
KQ8
N5L
O3W
OK1
PATMY
PIMPY
PJBAE
PYCSY
RIN
SY9
T37
TR2
TSCCA
W28
AAYXX
CITATION
ABUWG
AZQEC
DWQXO
GNUQQ
PQEST
PQQKQ
PQUKI
PRINS
ID FETCH-LOGICAL-c3220-3c818ecaf0ff4081ae6eb672d04024c28b5f25cceed3d08989d48ef3d9e982673
IEDL.DBID O3W
ISSN 1755-1307
IngestDate Thu Oct 10 15:47:36 EDT 2024
Fri Aug 23 02:11:22 EDT 2024
Wed Aug 21 03:31:14 EDT 2024
Tue Aug 20 22:16:45 EDT 2024
IsDoiOpenAccess true
IsOpenAccess true
IsPeerReviewed true
IsScholarly true
Issue 1
Language English
License Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
LinkModel DirectLink
MergedId FETCHMERGED-LOGICAL-c3220-3c818ecaf0ff4081ae6eb672d04024c28b5f25cceed3d08989d48ef3d9e982673
OpenAccessLink https://iopscience.iop.org/article/10.1088/1755-1315/838/1/012010
PQID 2563806805
PQPubID 4998669
PageCount 8
ParticipantIDs iop_journals_10_1088_1755_1315_838_1_012010
crossref_primary_10_1088_1755_1315_838_1_012010
proquest_journals_2563806805
PublicationCentury 2000
PublicationDate 20210801
PublicationDateYYYYMMDD 2021-08-01
PublicationDate_xml – month: 08
  year: 2021
  text: 20210801
  day: 01
PublicationDecade 2020
PublicationPlace Bristol
PublicationPlace_xml – name: Bristol
PublicationTitle IOP conference series. Earth and environmental science
PublicationTitleAlternate IOP Conf. Ser.: Earth Environ. Sci
PublicationYear 2021
Publisher IOP Publishing
Publisher_xml – name: IOP Publishing
References Kheshti (EES_838_1_012010bib20) 2020; 16
Wang (EES_838_1_012010bib3) 2018; 33
Liu (EES_838_1_012010bib17) 2018; 33
Shao (EES_838_1_012010bib15) 2019; 7
Liu (EES_838_1_012010bib18) 2017; 32
Azizipanah-Abarghooee (EES_838_1_012010bib2) 2020; 35
Zhao (EES_838_1_012010bib12) 2016; 31
Garmroodi (EES_838_1_012010bib4) 2018; 9
Morren (EES_838_1_012010bib5) 2006; 21
Ashouri-Zadeh (EES_838_1_012010bib7) 2021; 12
Van de Vyver (EES_838_1_012010bib9) 2016; 31
Chu (EES_838_1_012010bib16) 2020; 35
Prasad (EES_838_1_012010bib14) 2020; 35
Toulabi (EES_838_1_012010bib19) 2017; 32
Hwang (EES_838_1_012010bib10) 2016; 7
Tang (EES_838_1_012010bib13) 2019; 10
Yin (EES_838_1_012010bib1) 2017; 32
Ying (EES_838_1_012010bib11) 2018; 33
Ashouri-Zadeh (EES_838_1_012010bib21) 2017; 8
Peng (EES_838_1_012010bib6) 2020; 35
Nguyen (EES_838_1_012010bib8) 2019; 10
References_xml – volume: 10
  start-page: 822
  year: 2019
  ident: EES_838_1_012010bib13
  article-title: Active Power Control of Wind Turbine Generators via Coordinated Rotor Speed and Pitch Angle Regulation
  publication-title: IEEE Transactions on Sustainable Energy
  doi: 10.1109/TSTE.2018.2848923
  contributor:
    fullname: Tang
– volume: 32
  start-page: 1209
  year: 2017
  ident: EES_838_1_012010bib18
  article-title: ESO-Based Inertia Emulation and Rotor Speed Recovery Control for DFIGs
  publication-title: IEEE Transactions on Energy Conversion
  doi: 10.1109/TEC.2017.2698212
  contributor:
    fullname: Liu
– volume: 32
  start-page: 2487
  year: 2017
  ident: EES_838_1_012010bib1
  article-title: Turbine Stability-Constrained Available Wind Power of Variable Speed Wind Turbines for Active Power Control
  publication-title: IEEE Transactions on Power Systems
  doi: 10.1109/TPWRS.2016.2605012
  contributor:
    fullname: Yin
– volume: 35
  start-page: 4056
  year: 2020
  ident: EES_838_1_012010bib16
  article-title: Towards Optimal System Scheduling With Synthetic Inertia Provision From Wind Turbines
  publication-title: IEEE Transactions on Power Systems
  doi: 10.1109/TPWRS.2020.2985843
  contributor:
    fullname: Chu
– volume: 33
  start-page: 3450
  year: 2018
  ident: EES_838_1_012010bib11
  article-title: Impact of Inertia Control of DFIG-Based WT on Electromechanical Oscillation Damping of SG
  publication-title: IEEE Transactions on Power Systems
  doi: 10.1109/TPWRS.2018.2801283
  contributor:
    fullname: Ying
– volume: 33
  start-page: 6579
  year: 2018
  ident: EES_838_1_012010bib3
  article-title: A Novel Active Power Control Framework for Wind Turbine Generators to Improve Frequency Response
  publication-title: IEEE Transactions on Power Systems
  doi: 10.1109/TPWRS.2018.2829748
  contributor:
    fullname: Wang
– volume: 35
  start-page: 3181
  year: 2020
  ident: EES_838_1_012010bib14
  article-title: Synergistic Frequency Regulation Control Mechanism for DFIG Wind Turbines With Optimal Pitch Dynamics
  publication-title: IEEE Transactions on Power Systems
  doi: 10.1109/TPWRS.2020.2967468
  contributor:
    fullname: Prasad
– volume: 16
  start-page: 6772
  year: 2020
  ident: EES_838_1_012010bib20
  article-title: Toward Intelligent Inertial Frequency Participation of Wind Farms for the Grid Frequency Control
  publication-title: IEEE Transactions on Industrial Informatics
  doi: 10.1109/TII.2019.2924662
  contributor:
    fullname: Kheshti
– volume: 35
  start-page: 1198
  year: 2020
  ident: EES_838_1_012010bib2
  article-title: A Linear Inertial Response Emulation for Variable Speed Wind Turbines
  publication-title: IEEE Transactions on Power Systems
  doi: 10.1109/TPWRS.2019.2939411
  contributor:
    fullname: Azizipanah-Abarghooee
– volume: 33
  start-page: 3097
  year: 2018
  ident: EES_838_1_012010bib17
  article-title: Avoiding Frequency Second Dip in Power Unreserved Control During Wind Power Rotational Speed Recovery
  publication-title: IEEE Transactions on Power Systems
  doi: 10.1109/TPWRS.2017.2761897
  contributor:
    fullname: Liu
– volume: 7
  start-page: 924
  year: 2016
  ident: EES_838_1_012010bib10
  article-title: Dynamic Droop – Based Inertial Control of a Doubly-Fed Induction Generator
  publication-title: IEEE Transactions on Sustainable Energy
  doi: 10.1109/TSTE.2015.2508792
  contributor:
    fullname: Hwang
– volume: 31
  start-page: 833
  year: 2016
  ident: EES_838_1_012010bib12
  article-title: Coordinated Microgrid Frequency Regulation Based on DFIG Variable Coefficient Using Virtual Inertia and Primary Frequency Control
  publication-title: IEEE Transactions on Energy Conversion
  doi: 10.1109/TEC.2016.2537539
  contributor:
    fullname: Zhao
– volume: 21
  start-page: 433
  year: 2006
  ident: EES_838_1_012010bib5
  article-title: Wind turbines emulating inertia and supporting primary frequency control
  publication-title: IEEE Transactions on Power Systems
  doi: 10.1109/TPWRS.2005.861956
  contributor:
    fullname: Morren
– volume: 35
  start-page: 962
  year: 2020
  ident: EES_838_1_012010bib6
  article-title: Two-Stage Variable Proportion Coefficient Based Frequency Support of Grid-Connected DFIG-WTs
  publication-title: IEEE Transactions on Power Systems
  doi: 10.1109/TPWRS.2019.2943520
  contributor:
    fullname: Peng
– volume: 12
  start-page: 1060
  year: 2021
  ident: EES_838_1_012010bib7
  article-title: Adaptive Virtual Inertia Controller for DFIGs Considering Nonlinear Aerodynamic Efficiency
  publication-title: IEEE Transactions on Sustainable Energy
  doi: 10.1109/TSTE.2020.3032478
  contributor:
    fullname: Ashouri-Zadeh
– volume: 8
  start-page: 1772
  year: 2017
  ident: EES_838_1_012010bib21
  article-title: Modification of DFIG’s Active Power Control Loop for Speed Control Enhancement and Inertial Frequency Response
  publication-title: IEEE Transactions on Sustainable Energy
  doi: 10.1109/TSTE.2017.2710624
  contributor:
    fullname: Ashouri-Zadeh
– volume: 10
  start-page: 997
  year: 2019
  ident: EES_838_1_012010bib8
  article-title: Combination of Synchronous Condenser and Synthetic Inertia for Frequency Stability Enhancement in Low-Inertia Systems
  publication-title: IEEE Transactions on Sustainable Energy
  doi: 10.1109/TSTE.2018.2856938
  contributor:
    fullname: Nguyen
– volume: 7
  start-page: 120089
  year: 2019
  ident: EES_838_1_012010bib15
  article-title: Stability Enhancement and Direct Speed Control of DFIG Inertia Emulation Control Strategy
  publication-title: IEEE Access
  doi: 10.1109/ACCESS.2019.2937180
  contributor:
    fullname: Shao
– volume: 32
  start-page: 1418
  year: 2017
  ident: EES_838_1_012010bib19
  article-title: An Input-to-State Stability Approach to Inertial Frequency Response Analysis of Doubly-Fed Induction Generator-Based Wind Turbines
  publication-title: IEEE Transactions on Energy Conversion
  doi: 10.1109/TEC.2017.2696510
  contributor:
    fullname: Toulabi
– volume: 31
  start-page: 1129
  year: 2016
  ident: EES_838_1_012010bib9
  article-title: Droop Control as an Alternative Inertial Response Strategy for the Synthetic Inertia on Wind Turbines
  publication-title: IEEE Transactions on Power Systems
  doi: 10.1109/TPWRS.2015.2417758
  contributor:
    fullname: Van de Vyver
– volume: 9
  start-page: 676
  year: 2018
  ident: EES_838_1_012010bib4
  article-title: Frequency Support From Wind Turbine Generators With a Time-Variable Droop Characteristic
  publication-title: IEEE Transactions on Sustainable Energy
  doi: 10.1109/TSTE.2017.2754522
  contributor:
    fullname: Garmroodi
SSID ssj0067439
Score 2.2354681
Snippet Abstract The DFIGs can participate in frequency control by virtual inertia method. After exiting the frequency control, secondary frequency drop will occur...
The DFIGs can participate in frequency control by virtual inertia method. After exiting the frequency control, secondary frequency drop will occur inevitably....
SourceID proquest
crossref
iop
SourceType Aggregation Database
Enrichment Source
Publisher
StartPage 12010
SubjectTerms Control methods
Frequency control
Frequency dependence
Frequency modulation
Inertia
Load fluctuation
Optimization
Rotor speed
Turbines
SummonAdditionalLinks – databaseName: AUTh Library subscriptions: ProQuest Central
  dbid: BENPR
  link: http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwhV1dS8MwFA1uQ_BF_MTplAi-SVm_2zyJznWbuCHqZG8hbRrYS1u3-bB_771tyhyCvrVNHspJck8-zs0h5MYWti1NZRlAhoHhCmYaTFko9geuCIQbJAxzh8cTfzh1n2beTG-4LbWsso6JZaCWeYJ75F2gZidEowjvrvg00DUKT1e1hUaDtGzLxWPa1kN_8vJax2JU2LMyJdLzDIjWQZ0jDMs-_c3yuqEDb13MIsU82h_01Jjnxa8YXRJPdED29YyR3ldNfEh20uyI7A5KR971MXmOFpUaek17leyc6htn1zRX9DEaDZYUuUrSPKPVHgI8f8wXmDlCRxkKqwUdl07SJ2Qa9d97Q0NbJBgJjESIoAkQbpoIZSrlAruL1E9jPwD4YV3oJnYYe8r2EmRCR5poFSndMFWOZCmDhUXgnJJmlmfpGaEqkHh3mWCOI9w4cQTMdHzJlCliGTNbtUm3RoYX1U0YvDzBDkOOWHLEkgOW3OIVlm1yCwByPSiW_9a-3qrd779tlfNCwj906sbYVNz0jPO_iy_Ino2KlFK-1yHN1eIrvYQpxSq-0v3mG5eEwn8
  priority: 102
  providerName: ProQuest
Title Frequency Control Strategy of DFIGs based on Improved Virtual Inertia Method
URI https://iopscience.iop.org/article/10.1088/1755-1315/838/1/012010
https://www.proquest.com/docview/2563806805
Volume 838
hasFullText 1
inHoldings 1
isFullTextHit
isPrint
link http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwlV1bS8MwFA66IfgiXnE6RwTfpPaS3vKoc90m7oI69S2kTQO-tGObD_v3niQtMkTEt5SmTfjanO-k_c45CF153POEI10LyDCyfE4di0pXif2BKyLuRxlVscOjcTiY-Q_vQa0m1LEw5bwy_TfQNImCDYSVIC62gfACyyVuYMcEjmwV_qmCrJownPaRJuStNsZKYk91TKS-xonqIOFf77PBT9swhx9GWjNPso_2KpcR35oJHqCtvDhEO31dknd9hB6ThZFDr3HX6M5xlXJ2jUuJ75Nhf4kVWQlcFth8RID268dChY7gYaGU1RyPdCnpYzRLei_dgVXVSLAyWIpgQjNg3Dzj0pHSB3rneZinYQT4w8bQz7w4DaQXZIoKiXBUrUjhx7kkguYUdhYROUGNoizyU4RlJFTyMk4J4X6aEQ6uTiiodHgqUurJFrJrZNjcpMJg-hd2HDOFJVNYMsCSucxg2ULXACCrVsXyz96XG717veeN82wuYA7t-mF8dwSvjcSqhkhw9q8Bz9GupxQqWs7XRo3V4jO_ABdjlXZQ8643nj510PZwMu3oV-oLJ4bDeg
link.rule.ids 315,786,790,21416,27955,27956,33777,38898,38923,43838,53875,53901
linkProvider IOP Publishing
linkToHtml http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwhV1LS8NAEF60RfQiPrFadQVvEvJusifR2pe2RbSV3pZNNgu9JLWth_57Z5INtQh6C9kJhG9359vHNzOE3DrCcaSlbAPIMDA8wSyDKRvF_sAVgfCCmGHs8GDY6I6954k_0QduCy2rLH1i7qhlFuMZuQnU7IZYKMK_n30aWDUKb1d1CY1tUsWUm2GFVB9bw9e30hejwp7lIZG-b4C3DsoYYdj26Xe2b8KHpm1iFCnG0f6gp-1pNvvlo3PiaR-Qfb1ipA9FFx-SrSQ9IjudvCLv6pj02_NCDb2izUJ2TnXG2RXNFH1q9zoLilwlaZbS4gwBnj-mc4wcob0UhdWCDvJK0idk3G6Nml1Dl0gwYpiJ4EFjINwkFspSygN2F0kjiRoBwA_7Qi92wshXjh8jE7rSwlKR0gsT5UqWMNhYBO4pqaRZmpwRqgKJucsEc13hRbErYKXTkExZIpIRc1SNmCUyfFZkwuD5DXYYcsSSI5YcsOQ2L7CskTsAkOtJsfjX-mbDutV632jnMwn_UC87Y224Hhnnfzdfk93uaNDn_d7w5YLsOahOyaV8dVJZzr-SS1heLKMrPYa-AfEVxXU
linkToPdf http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwpV1ZS8QwEB48UHzxFtczgm_S7ZF22zyKu3XXGzzwLaRNAyJ0lz0e1l_vJOkqq4iIby1Nenxp5pu038wAHAciCKSnfAfJMHZCwTyHKV-L_ZErYhHGOdOxw9c3jfZjePEcPc9A6yMWpturTH8dN22iYAthJYhLXCS8yPGpH7kJxT1Xh3_6ntuTahbmcf7GWtnXub2bGGQts2cmLtL08-JJoPCP55riqFm8j2-G2rBPumJVIgOTtFCLTl7ro2FWz9--pHT894OtwnLln5JT22kNZopyHRbOTf3f8QZcpX2rvR6TMytyJ1V-2zHpKtJMO-cDoplRkm5J7BcL3H566es4FdIptYxbkGtTt3oTHtPWw1nbqQoyODnOe7TXOdJ7kQvlKRWiLyGKRpE1YhxsXIWGeZBkkQqiXPMulZ4uTCnDpFBUsoLhMiamWzBXdstiG4iKpc6UJhilIsxyKtCvakimPJHJjAWqBu5kCHjP5t3g5n95knCNE9c4ccSJ-9ziVIMTBJZXU3Dwa-ujqdat1v3UcY6o12BvMuqfDdFFpIkuWBLt_OmCh7B410z5VefmcheWAq2MMTLCPZgb9kfFPro2w-zAvLjviQnmCw
openUrl ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Frequency+Control+Strategy+of+DFIGs+based+on+Improved+Virtual+Inertia+Method&rft.jtitle=IOP+conference+series.+Earth+and+environmental+science&rft.au=Gao%2C+Zhimin&rft.au=Cao%2C+Yongji&rft.au=Zhang%2C+Hengxu&rft.au=Qin%2C+Hao&rft.date=2021-08-01&rft.pub=IOP+Publishing&rft.issn=1755-1307&rft.eissn=1755-1315&rft.volume=838&rft.issue=1&rft_id=info:doi/10.1088%2F1755-1315%2F838%2F1%2F012010&rft.externalDocID=EES_838_1_012010
thumbnail_l http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/lc.gif&issn=1755-1307&client=summon
thumbnail_m http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/mc.gif&issn=1755-1307&client=summon
thumbnail_s http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/sc.gif&issn=1755-1307&client=summon