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Dual Control Strategy for Grid-tied Battery Energy Storage Systems to Comply with Emerging Grid Codes and fault ride through Requirements

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Journal of Modern Power Systems and Clean Energy 2022年第4期10卷 977-988页

作者： Maxime Berger Ilhan Kocar Evangelos Farantatos Aboutaleb Haddadi Department of Electrical Engineering Polytechnique MontréalMontréalCanada Electric Power Research Institute(EPRI) Palo AltoUSA

Battery energy storage systems(BESSs)need to comply with grid code and fault ride through(FRT)requirements during disturbances whether they are in charging or discharging *** literature has shown that constant charging current control of BESSs in charging mode can prevent BESSs from complying with emerging grid codes such as the German grid code under stringent unbalanced fault *** address this challenge,this paper proposes a new FRTactivated dual control strategy that consists of switching from constant battery current control to constant DC-link voltage control through a positive droop *** results show that the strategy ensures proper DC-link voltage and current management as well as adequate control of the positive-and negative-sequence active and reactive currents according to the grid code *** is also shown that the proposed FRT control strategy is tolerant to initial operating conditions of BESS plant,grid code requirements,and fault severity.

关键词： Battery energy storage system inverter-based resource fault ride through electromagnetic transient

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Power hardware in the loop validation of fault ride through of VSC HVDC connected offshore wind power plants

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Journal of Modern Power Systems and Clean Energy 2014年第1期2卷 23-29页

作者： Ranjan SHARMA Qiuwei WU Seung Tae CHA Kim H.JENSEN Tonny W.RASMUSSEN JacobØSTEGAARD Siemens Wind Power A/S Borupvej 167330 BranderDenmark Centre for Electric Power and Energy Department of Electrical EngineeringTechnical University of DenmarkElektrovej 3252800 Kongens LyngbyDenmark

This paper presents the power hardware in the loop(PHIL)validation of a feed forward DC voltage control scheme for the fault ride through(FRT)of voltage source converter(VSC)high voltage DC(HVDC)connected offshore wind power plants(WPPs).In the proposed FRT scheme,the WPP collector network AC voltage is actively controlled by considering both the DC voltage error and the AC current from the WPP AC collector system which ensures fast and robust FRT of the VSC HVDC connected offshore *** PHIL tests were carried out in order to verify the efficacy of the proposed feed forward DC voltage control scheme for enhancing the FRT capability of the VSC HVDC connected *** PHIL test results have demonstrated the proper control coordination between the offshore WPP and the WPP side VSC and the efficient FRT of the VSC HVDC connected WPPs.

关键词： fault ride through High voltage DC(HVDC) Offshore wind power plant Power hardware in the loop(PHIL) Voltage source converter(VSC)

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Hybrid MMC with Low Voltage Operations and DC fault ride-through Capabilities Based on Auxiliary Full-bridge Converter

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CSEE Journal of Power and Energy Systems 2022年第3期8卷 864-871页

作者： Xibei Zhao Jiangping Ding Jianzhong Xu Jinsha Yuan State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University(NCEPU)Beijing102206China

The hybrid modular multilevel converter(MMC)based on half-bridge sub-modules(HBSMs)and full-bridge submodules(FBSMs)can operate at low DC voltages and clear DC side fault ***,the costs and power losses are much higher in hybrid *** auxiliary full-bridge converter(AFC)is designed to reconstruct the converter structure in the arm level,and the HBSMs output capacitor voltage through the AFC can attain similar capabilities to hybrid *** operational principle of the auxiliary full-bridge converter is discussed,and the low voltage operation and non-blocking fault ride through control are verified in a two-terminal DC network *** economic analysis,the power loss of the AFC is similar to a HBSM MMC but the total investment is lower than a hybrid MMC,making the AFC a promising solution to improve the existing HBSM converter with more controllability.

关键词： DC fault fault ride through hybrid MMC low voltage operation

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Voltage phase angle jump characteristic of DFIGs in case of weak grid connection and grid fault

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Journal of Modern Power Systems and Clean Energy 2016年第2期4卷 256-264页

作者： Xinshou TIAN Gengyin LI Yongning CHI Weisheng WANG Haiyan TANG Xiang LI State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University) Changping DistrictBeijing 102206China China Electric Power Research Institute Haidian DistrictBeijing 100192China

In the condition of connecting large scale doubly-fed induction generators (DFIGs) into weak grid,the closely coupled interactions between wind generators and power grid becomes more *** new fault characteristics including voltage phase angle jump will emerge,which will influence the power quality of power ***,there are very few studies focusing on the mechanism of voltage phase angle jump under grid fault in a weak grid with wind turbine *** paper focuses on the scientific issues and carries out mechanism studies from different aspects,including mathematical deduction,field data analysis and time domain *** on the analysis of transientcharacteristics of DFIGs during the grid fault,this paper points out that the change of terminal voltage phase angle in DFIGs is an electromagnetism transition process,which is different from conventional synchronous ***,the impact on transient characteristics of voltage phase angle are revealed in terms of fault ride through(FRT) control strategies,control parameters of current inner-loop of rotor-side converter and grid strength.

关键词： DFIGs Weak grid fault ride through Voltage phase angle jump

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Condition Monitoring and Maintenance Management with Grid-Connected Renewable Energy Systems

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Computers, Materials & Continua 2022年第8期72卷 3999-4017页

作者： Md.Mottahir Alam Ahteshamul Haque Mohammed Ali Khan Nebras M.Sobahi Ibrahim Mustafa Mehedi Asif Irshad Khan Department of Electrical and Computer Engineering(ECE) King Abdulaziz UniversityJeddah 21589Saudi Arabia Advance Power Electronics Research Lab Department of Electrical EngineeringJamia Millia IslamiaNew Delhi 110025India Department of Electrical Power Engineering Faculty of Electrical Engineering and CommunicationBrno University of TechnologyBrno 61600Czech Republic Center of Excellence in Intelligent Engineering Systems(CEIES) King Abdulaziz UniversityJeddah 21589Saudi Arabia Computer Science Department Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddah 21589Saudi Arabia

The shift towards the renewable energy market for carbon-neutral power generation has encouraged different governments to come up with a plan of *** with the endorsement of renewable energy for harsh environmental conditions like sand dust and snow,monitoring and maintenance are a few of the prime *** problems were addressed widely in the literature,but most of the research has drawbacks due to long detection time,and high misclassification *** to overcome these drawbacks,and to develop an accurate monitoring approach,this paper is motivated toward the understanding of primary failure concerning a grid-connected photovoltaic(PV)system and highlighted along with a brief overview on existing fault detection *** on the drawback a data-driven machine learning approach has been used for the identification of fault and indicating the maintenance unit regarding the operation and maintenance ***,the system was tested with a 4 kWp grid-connected PV system,and a decision tree-based algorithm was developed for the identification of a *** results identified 94.7%training accuracy and 14000 observations/sec prediction speed for the trained classifier and improved the reliability of fault detection nature of the grid-connected PV operation.

关键词： fault detection machine learning fault ride through

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fault Current Contributions of Doubly Fed Induction Generator Wind Turbines under Different Control Strategies

Fault Current Contributions of Doubly Fed Induction Generato...

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2011 International Conference on Advanced Power System Automation and Protection(APAP 2011)

作者： GAO Xiang WANG Gang WU Zhengrong LI Haifeng College of Electrical Engineering South China University of Technology Guangzhou 510640 China

With the increased penetration of wind energy into the power system, the fault ride-through ability of doubly fed generator （DFIG） has got more and more attention. Recent grid codes request DFIG stay connected to grid when system fault occurs and play an active role in grid voltage recovery. In this paper, a new voltage control strategy without crowbar is to improve fault ride-through characteristic. The transient characteristics of DFIG are analyzed. The fault current contributions DFIG with crowbar protection and proposed voltage control strategy are analyzed and compared based on mathematical expressions and equivalent circuits. The conclusion that fault current contributions of DFIG under two control strategies are different in amplitude and phase is obtained. At last, a 10KV distribution network with DFIG model under two control strategies set up in PowerFactory DIgSILENT. Simulation results show the different behavior of DFIG under different control strategies which will impact distribution network protection in different way.

关键词： DFIG fault ride through Short circuit current Voltage control Crowbar

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