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1

Shen, Yu, Wei Hu, Yaoyao Xiao, et al. "Mechanical Switch Based Adaptive Fault Ride-through Strategy for Power Quality Improvement Device." Energies 14, no. 20 (2021): 6623. http://dx.doi.org/10.3390/en14206623.

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Cascaded H-bridge power quality improving device (PQID) has garnered extensive attention for its flexible electric energy conversion and fast voltage response. However, the failure rate of PQID is relatively high due to the use of large numbers of power electronic devices. This paper proposes a mechanical-switch based adaptive fault ride-through strategy for improving the operational stability and power supply reliability of PQID. According to the features of the topology and working principle of PQID, this paper summarized the types of internal faults and analyzed the characteristics of diffe
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2

Zhou, Huiying, Siyang Ge, and Liang Qin. "Coordinate Fault Ride-Through Strategy for Connection of Offshore Wind Farms Using Voltage Source-Converter-Based High-Voltage Direct-Current Transmission under Single Polar Fault." Sensors 23, no. 12 (2023): 5760. http://dx.doi.org/10.3390/s23125760.

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In a system where wind farms are connected to the grid via a bipolar flexible DC transmission, the occurrence of a short-time fault at one of the poles results in the active power emitted by the wind farm being transmitted through the non-faulty pole. This condition leads to an overcurrent in the DC system, thereby causing the wind turbine to disconnect from the grid. Addressing this issue, this paper presents a novel coordinated fault ride-through strategy for flexible DC transmission systems and wind farms, which eliminates the need for additional communication equipment. The proposed strate
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3

Aggarwal, Manju, Madhusudan Singh, and S. K. Gupta. "Fault Ride-Through Capability of DSTATCOM for Distributed Wind Generation System." International Journal of Power Electronics and Drive Systems (IJPEDS) 6, no. 2 (2015): 348. http://dx.doi.org/10.11591/ijpeds.v6.i2.pp348-355.

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<span>In this paper, fault ride through analysis of a low voltage distribution system augmented with distributed wind generation using squirrel cage induction generator and distribution static compensator (DSTATCOM) is carried out through modeling and simulation study in MATLAB. The impact of different types of unbalanced (single line to ground) fault in a low voltage distribution system in normal and severe conditions are studied and analysed in details. Analysis on system instability is also shown in case of sever fault condition. A distribution Static Compensator (DSTATCOM) is used to
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4

Chen, Yue, Chenglin Ren, Junyi Sheng, et al. "An Optimized Fault-Ride-Through Control Strategy of Hybrid MMC with Fewer FBSMs." Electronics 13, no. 10 (2024): 1797. http://dx.doi.org/10.3390/electronics13101797.

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The modular multilevel converter (MMC) has many advantages of low switching losses, good harmonic performance and high modularity structure in state-of-the-art HVDC applications. The full-bridge submodules (FBSMs) of the hybrid MMC can inherently output negative voltage to absorb fault currents, and consequently the hybrid MMC can ride through severe DC faults without blocking. During the DC fault-ride-through process, the submodule capacitor voltage and arm current of the MMC will be temporarily increased. These characteristics limit the proportion of the FBSMs, which should not be too low an
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5

Jia, Jun, Xin Xin Hu, Ping Ping Han, and Yan Ping Hu. "The Study of Chopper in the LVRT of Direct-Drive Wind Energy Generation System." Advanced Materials Research 950 (June 2014): 314–20. http://dx.doi.org/10.4028/www.scientific.net/amr.950.314.

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With the scale of wind farm continuously increasing, when grid fault, the influences of the wind turbines connected to the grid on the stability of the power grid can never be ignored. Therefore, there are higher standards of the wind turbines’ abilities of fault ride-through (FRT) and producing reactive power. This paper studies the direct-drive wind power system, and the main point is the fault ride-through (FRT) of the permanent magnetic synchronous generator (PMSG) with Chopper. By establishing the dynamic model of PMSG under the environment of DigSILENT, this paper simulates the fault rid
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6

Islam, Saif, Kamran Zeb, Waqar Din, et al. "Design of a Proportional Resonant Controller with Resonant Harmonic Compensator and Fault Ride Trough Strategies for a Grid-Connected Photovoltaic System." Electronics 7, no. 12 (2018): 451. http://dx.doi.org/10.3390/electronics7120451.

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This paper presents the design and analysis of a proportional resonant controller with a resonant harmonic compensator and switch-type fault current limiter, as a fault-ride through strategy for a three-phase, grid-connected photovoltaic (PV) system under normal conditions and asymmetrical faults. The switch-type fault limiter comprised of current-limiting inductors, a bridge rectifier, a snubber capacitor, linear transformers, and energy absorption bypass. Furthermore, a critical and analytical comparison of switch-type fault limiters is carried out, with the conventional crowbar as the fault
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7

Zhang, Qingliang, Hui Sun, Changchun Zhai, and Xiaowei Chen. "Modeling and Simulation of Fault Ride Through Performance of HPR1000 NPP in the UK Grid." Journal of Physics: Conference Series 2087, no. 1 (2021): 012071. http://dx.doi.org/10.1088/1742-6596/2087/1/012071.

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Abstract This study focuses on the fault ride through capability of HPR1000 NPP in the UK grid and presents a Simulink-based modelling and simulation of the demonstration. The paper firstly introduces the fault ride through requirements of the UK grid, then describes the modelling process and analyses the simplified part accordingly, and finally analyses a three-phase ground fault with a duration of 140ms and a three-phase ground fault with a residual voltage of 85% and a duration of 180 seconds. The results show that the fluctuations of the plant under various fault ride through scenarios mee
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8

Ma, Kuichao, Mohsen Soltani, Amin Hajizadeh, Jiangsheng Zhu, and Zhe Chen. "Wind Farm Power Optimization and Fault Ride-Through under Inter-Turn Short-Circuit Fault." Energies 14, no. 11 (2021): 3072. http://dx.doi.org/10.3390/en14113072.

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Inter-Turn Short Circuit (ITSC) fault in stator winding is a common fault in Doubly-Fed Induction Generator (DFIG)-based Wind Turbines (WTs). Improper measures in the ITSC fault affect the safety of the faulty WT and the power output of the Wind Farm (WF). This paper combines derating WTs and the power optimization of the WF to diminish the fault effect. At the turbine level, switching the derating strategy and the ITSC Fault Ride-Through (FRT) strategy is adopted to ensure that WTs safely operate under fault. At the farm level, the Particle Swarm Optimization (PSO)-based active power dispatch
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9

Li, Xiaoqing, Haiying Dong, Jun Liu, Xiaojun Lin, and Zhiqiang Sun. "Synergetic Control Strategy of Front-End Speed Regulation Wind Turbine (FESRWT) for Fault Ride through." Mathematical Problems in Engineering 2022 (March 31, 2022): 1–11. http://dx.doi.org/10.1155/2022/6150753.

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A synergetic control method is proposed to improve the fault ride through capability of front-end speed regulation wind turbine (FESRWT). In case of three-phase short-circuit fault and single-phase grounding fault, this method can accelerate the attenuation of stator flux transient component and restrain the fluctuation of rotor speed, make generator produce large reactive power which will provide more reactive power support for power grid, and improve the fault ride through capability of FESRWT. By dynamic analysis of the proposed algorithm, the large range stability constraint condition sati
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10

Mullane, A., G. Lightbody, and R. Yacamini. "Wind-Turbine Fault Ride-Through Enhancement." IEEE Transactions on Power Systems 20, no. 4 (2005): 1929–37. http://dx.doi.org/10.1109/tpwrs.2005.857390.

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11

SUTHAR, BHARAT D. "Wind Energy Integration for DfIg Based Wind Turbine fault Ride-Through." Indian Journal of Applied Research 4, no. 5 (2011): 216–20. http://dx.doi.org/10.15373/2249555x/may2014/64.

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12

Han, Bing, and Yonggang Li. "Simulation Test of a DC Fault Current Limiter for Fault Ride-Through Problem of Low-Voltage DC Distribution." Energies 13, no. 7 (2020): 1753. http://dx.doi.org/10.3390/en13071753.

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The low voltage direct current (LVDC) distribution networks are connected with too many kinds of loads and sources, which makes them prone to failure. Due to the small damping value in the DC lines, the fault signal propagates so fast that the impact current with the wave front of millisecond and the transient voltage pose great challenges for fault detection. Even worse, some faults with small currents are difficult to detect and the communication is out of sync, resulting in protection misoperation. These problems have severely affected the new energy utilization. In view of this, a DC fault
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13

Shi, Huabo, Lijie Ding, Xueyang Zeng, et al. "Fault Ride-Through Control Strategy for Variable Speed Pumped Storage Unit with Full-Size Converter." Applied Sciences 14, no. 19 (2024): 8672. http://dx.doi.org/10.3390/app14198672.

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Fault ride-through is a prerequisite for ensuring continuous operation of a variable-speed pumped storage unit with a full-size converter (FSC-VSPU) and providing support for the renewable energy and power grid. This paper proposes low-voltage ride through (LVRT) and high-voltage ride through (HVRT) strategies for FSC-VSPU to address this issue. Firstly, the structure of FSC-VSPU and its control strategy under power generation and pumping conditions are described. Subsequently, the fault characteristics of the FSC-VSPU under different operating conditions are analyzed. More stringent fault rid
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14

Yadav, M. Praful, P. Sujatha, and P. B. Kumar. "Power Quality Improvement Using Dynamic Voltage Restorer on Grid-Connected Wind Energy System." European Journal of Electrical Engineering 23, no. 5 (2021): 401–7. http://dx.doi.org/10.18280/ejee.230506.

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Reduction of fossil fuels and increasing technology made importance of wind generation as renewable energy sources. With increasing number of wind farms fed to grid increases grid fault issues due to various wind systems disconnected from grid during grid faults. To get better grid operation, wind farms are probable to be carried during disturbance related to grid faults extensively known as fault ride through capability. In proposed system a fault ride through method in wind farm management system connected to grid is investigated in term of critical clearing time. This paper examines the use
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15

Shuaibu, Musayyibi, and Adamu Saidu Abubakar. "An Improved Dynamic Voltage Restorer Model for Ensuring Fault Ride-Through Capability of DFIG-based Wind Turbine Systems." ELEKTRIKA- Journal of Electrical Engineering 19, no. 1 (2020): 9–16. http://dx.doi.org/10.11113/elektrika.v19n1.205.

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Renewable energy sources (RES) are being integrated to electrical grid to complement the conventional sources in meeting up with global electrical energy demand. Among the RES, Wind Energy Conversion Systems (WECS) have gained global electricity market competitiveness especially the Doubly Fed Induction Generator (DFIG)-based Wind Turbines (WTs) because of flexible regulation of active and reactive power, higher power quality, variable speed operation, four quadrant converter operation and better dynamic performance. Grid connected DFIG-based WTs are prone to disturbances due to faults in the
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16

Li, Jiajun, Huabo Shi, Baohong Li, et al. "Fault Ride-Through Method for Interline Power Flow Controller Based on DC Current Limiter." Electronics 13, no. 6 (2024): 1038. http://dx.doi.org/10.3390/electronics13061038.

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The interline power flow controller (IPFC) based on a modular multilevel converter with a half-bridge configuration can control the active and reactive power flows of multiple alternating current (AC) lines. However, it forms a multiterminal system on the direct current (DC) side, which leads to DC faults. To reduce the protection and clearance requirements on the DC side of IPFCs, this paper proposes a hybrid current limiter topology suitable for generating a DC-side fault ride-through scheme. The current limiter employs a low-loss branch in steady-state conditions; when the fault occurs, a c
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17

Alharbi, Mohammed, Semih Isik, Faris E. Alfaris, Abdulaziz Alkuhayli, and Subhashish Bhattacharya. "A Fault Clearance and Restoration Approach for MMC-Based MTDC Grid." Electronics 11, no. 14 (2022): 2127. http://dx.doi.org/10.3390/electronics11142127.

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With the growth in continuous energy demand, high-voltage Multi-Terminal DC (MTDC) systems are technically and economically feasible to transmit bulk power and integrate additional energy sources. However, the high vulnerability of the MTDC systems to DC faults, especially pole-to-pole (P2P) faults, is technically challenging. The development of DC fault ride-through techniques such as DC circuit breakers is still challenging due to their high cost and complex operation. This paper presents the DC fault clearance and isolation method for an MMC-based MTDC grid without adopting the high-cost DC
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18

Wang, Ling Ling, Shu Ju Hu, Feng Lin Li, and Nian Hong Li. "High Voltage Ride through of PMSG-Based Wind Turbines." Advanced Materials Research 608-609 (December 2012): 633–37. http://dx.doi.org/10.4028/www.scientific.net/amr.608-609.633.

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The fault ride through capability of wind turbine is becoming more important with the rapid growth of wind power installed capacity. Among several grid faults the voltage swell is a critical event. Thus, to enhance the high voltage ride through capability of popular PMSG-based wind turbine, the behavior of the PMSG wind turbine when subjected to a voltage swell was analyzed and a strategy was proposed. The overvoltage results in an increasing converter DC bus voltage. By analyzing the vector diagram of line-side converter, the paper recommends increasing inductive current assisted with chopper
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19

Yin, Shi, Guanjun Li, Fubao Wu, Bo Yang, and Haoyuan Li. "Fault ride-through control strategy of H-bridge cascaded energy storage system." E3S Web of Conferences 185 (2020): 01075. http://dx.doi.org/10.1051/e3sconf/202018501075.

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The cascaded energy storage system has received extensive attention in areas such as new energy consumption, maintaining stable operation of the power grid, and supporting black start due to its advantages such as high access voltage level, large single unit capacity, and fast dynamic response rate. This paper aimed to improve the fault ride-through capability of the cascaded energy storage system, and proposed a fault ride-through control method. Firstly, the mathematical model of the cascaded energy storage system was established, and then the rapid detection method of the abnormal state of
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20

Kontos, E., G. Tsolaridis, R. Teodorescu, and P. Bauer. "Full-bridge MMC DC fault ride-through and STATCOM operation in multi-terminal HVDC grids." Bulletin of the Polish Academy of Sciences Technical Sciences 65, no. 5 (2017): 653–62. http://dx.doi.org/10.1515/bpasts-2017-0070.

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Abstract This paper investigates a control structure to enhance the DC fault ride-through capability of a full-bridge modular multilevel converter (MMC) station, while ensuring a stable controlled operation as a STATCOM during DC faults without the need for fault isolation. Taking advantage of the switching states of a full-bridge submodule, a DC current controller is proposed, which provides the DC voltage reference for the modulation when a DC fault is detected. By changing the outer controllers strategy from DC voltage or active power control to converter energy control during a fault, the
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21

Kalyani, V. Mohana, J. Preetha Roselyn, C. Nithya, and D. Devaraj. "Enhanced Crowbar Protection for Fault Ride through Capability of Wind Generation Systems." International Journal of Power Electronics and Drive Systems (IJPEDS) 7, no. 4 (2016): 1366. http://dx.doi.org/10.11591/ijpeds.v7.i4.pp1366-1376.

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Due to increasing demand in power, the integration of renewable sources like wind generation into power system is gaining much importance nowadays. The heavy penetration of wind power into the power system leads to many integration issues mainly due to the intermittent nature of the wind and the desirability for variable speed operation of the generators. As the wind power generation depends on the wind speed, its integration into the grid has noticeable influence on the system stability and becomes an important issue especially when a fault occurs on the grid. The protective disconnection of
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22

Fujii, K., N. T. Yamada, Y. Okuma, and N. Kanao. "Fault Ride Through Capability for Solar Inverters." EPE Journal 22, no. 2 (2012): 30–36. http://dx.doi.org/10.1080/09398368.2012.11463821.

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23

Mo, Olve, John Olav Tande, Leif Warland, and Kjell Ljøkelsøy. "Fault Ride-through Testing of Wind Turbines." Wind Engineering 30, no. 2 (2006): 129–40. http://dx.doi.org/10.1260/030952406778055036.

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24

Zhang, Xinyan, Xuan Cao, Weiqing Wang, and Chao Yun. "Fault Ride-Through Study of Wind Turbines." Journal of Power and Energy Engineering 01, no. 05 (2013): 25–29. http://dx.doi.org/10.4236/jpee.2013.15004.

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25

He, Jianan, Lei Li, Jian Niu, et al. "Fault Analysis and Protection Principle for the Distribution Networks Integrated with PV and BESS." Applied Sciences 15, no. 10 (2025): 5568. https://doi.org/10.3390/app15105568.

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With the rapid development of renewable energy technologies, large numbers of photovoltaic (PV) and battery energy storage systems (BESS) have been connected to distribution networks. However, both PV and the BESS are inverter interfaced power sources, which may cause the traditional protection relays to mis-operate or mal-operate. Moreover, according to the latest grid connection specifications, PV and BESS are required to absorb negative sequence current during asymmetric faults of distribution networks, indicating that they both must adopt new control strategies during the fault ride throug
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26

Safaei, A., S. H. Hosseinian, and Abyaneh H. Askarian. "Enhancing the HVRT and LVRT Capabilities of DFIG-based Wind Turbine in an Islanded Microgrid." Engineering, Technology & Applied Science Research 7, no. 6 (2017): 2118–23. https://doi.org/10.5281/zenodo.1118240.

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Doubly fed induction generator (DFIG) based wind turbines are very sensitive to grid voltage variations. Therefore, low-voltage-ride-through (LVRT) and high-voltage-ride-through (HVRT) capabilities are employed to improve DFIG performance during grid faults and voltage swell events. In this paper, a superconducting magnetic energy storage (SMES) device with a PWM voltage source converter and a DC-DC chopper is proposed to enhance the DFIG LVRT and HVRT capabilities in an islanded microgrid simultaneously. The simulation results demonstrate that the SMES absorbs or releases energy from/to the m
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27

Wang, Zaisheng, Shiya Zhao, Yang Li, Fang Yang, and Zhan Zhao. "Fault Tolerant Control of Grid Connected Inverters Based on Low-Voltage Ride Through." International Journal of Mechanical and Electrical Engineering 3, no. 3 (2024): 78–83. http://dx.doi.org/10.62051/ijmee.v3n3.09.

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To enhance the reliability of new energy grid connected systems, a fault-tolerant model predictive control strategy with low-voltage ride-through capability for grid connected inverter bridge arms has been proposed. Firstly, the operational principles following a single-phase bridge arm fault in the grid-tied inverter are analyzed. Then, a fault-tolerant structure for the grid connected inverter is established by creating a virtual bridge arm using direct current-side capacitors. Subsequently, a current prediction model is established, and control is implemented using redundant vectors. Additi
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28

Li, Lei, Yabo Liang, Jian Niu, et al. "The Fault Ride-Through Characteristics of a Double-Fed Induction Generator Using a Dynamic Voltage Restorer with Superconducting Magnetic Energy Storage." Applied Sciences 13, no. 14 (2023): 8180. http://dx.doi.org/10.3390/app13148180.

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With the prevalence of renewable energy sources such as wind power in the power system, analyzing the fault characteristics of systems composed of DFIGs is becoming increasingly important. Therefore, this article analyzes, at first theoretically, the fault characteristics of a doubly fed induction generator (DFIG) during fault periods. It was found that the fault current of the DFIG exhibited the frequency offset phenomenon, which is affected by the depth of voltage dips and can negatively impact traditional distance protection. Furthermore, a method using a dynamic voltage restorer (DVR) base
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29

Chongjarearn, Yutana. "Doubly-Fed Induction Generator Wind Turbine Model for Fault Ride-Through Investigation." ECTI Transactions on Electrical Engineering, Electronics, and Communications 11, no. 1 (2012): 32–36. http://dx.doi.org/10.37936/ecti-eec.2013111.170603.

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The paper presents an investigation into the behavior of a grid-connected, wind turbine driven Doubly-Fed Induction Generator (DFIG) during Grid faults which are represented by a voltage dip on all three phases of the voltage supply. Stator-voltage- oriented vector control is used to decouple the active and reactive power generated by the machine. The dynamic DFIG model is used to simulate the behaviour of the wind turbine generator during both normal and fault conditions. Simulation and experiment results are shown in a very good agreement. Further the model can be used to investigate Fault r
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30

Chen, Siqing, Xiren Miao, Jinjie Lin, and Minyi Fu. "Fault adaptive current limiter for low voltage DC distribution system." Journal of Physics: Conference Series 3033, no. 1 (2025): 012026. https://doi.org/10.1088/1742-6596/3033/1/012026.

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Abstract Low voltage direct current (LVDC) distribution network is one of the important carriers of new DC sources and loads. However, the voltage source converter (VSC), as its important energy conversion device, does not have fault ride-through capability. At the same time, traditional DC circuit breakers are difficult to isolate faults before VSC is blocked, which makes LVDC system have huge potential safety hazards. This paper proposes a fault adaptive current limiter (FACL) for LVDC systems to address these issues, offering superior current limiting performance to traditional schemes. At
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31

Wang, Deming, Fei Li, and Yingliang Li. "A Communication-Assisted Distance Protection for AC Microgrids considering the Fault-Ride-Through Requirements of Distributed Generators." International Journal of Energy Research 2023 (December 16, 2023): 1–13. http://dx.doi.org/10.1155/2023/2000611.

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The conventional overcurrent protection is ineffective in isolating faults in microgrids due to the low fault current levels contributed by inverter-interfaced distributed generations (IIDGs). To extend the microgrid protection methods, the distance protection is considered as a common alternative to detect faults. However, the fault-ride-through (FRT) requirements and the high impedance fault (HIF) detection challenge the application of the conventional distance protection. To solve the two problems, a new inverse-time distance (ITD) protection for medium-voltage AC microgrids was proposed in
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32

Gao, Kun, Zhe Nan Zhang, Quan Sheng Zhu, and Liang Yuan. "Research on Low Voltage Ride through of Coal-Fired Power Unit Auxiliary in Henan." Applied Mechanics and Materials 441 (December 2013): 281–85. http://dx.doi.org/10.4028/www.scientific.net/amm.441.281.

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The electric power short circuit breakdown may cause low voltage blocking of frequency-converter giving rise to power unit shutdown accident,three typical coal-fired power units are selected to emulate calculations on low voltage ride ability with considering threephase short-circuit earthing fault, threephase short-circuit earthing fault by impedance, single-phase short-circuit earthing fault ,indicating that the short-circuit fault of the lines integrating into power system would result in the voltage of house-service busbar dropping off to 25%-85%,especially threephase short-circuit earthin
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33

Qi, Xin, Can Ding, Jun Zhang, Quan Wang, and Wenhui Chen. "Low Voltage Ride Through Coordination Control Strategy of DFIG with Series Grid Side Converter." Energies 18, no. 10 (2025): 2537. https://doi.org/10.3390/en18102537.

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The present study investigates the control strategy of a novel doubled-fed induction generator (DFIG) with a series grid-side converter (SGSC) during grid faults. The rotor-side inverter is subject to a control strategy derived from the Model Predictive Current Control (MPCC) theory, which is implemented during periods of fault occurrence; for the series grid-side converter, the positive and negative sequence component control is implemented during both steady state and fault periods to enhance system stability and performance. The proposed coordinated control strategy is implemented on a doub
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34

Arulampalam, A., G. Ramtharan, N. Caliao, J. B. Ekanayake, and N. Jenkins. "Simulated Onshore-Fault Ride through of Offshore Wind Farms Connected through VSC HVDC." Wind Engineering 32, no. 2 (2008): 103–13. http://dx.doi.org/10.1260/030952408784815781.

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Effective Onshore-Fault Ride Through was demonstrated by simulation for a Fixed Speed Induction Generator (FSIG) offshore wind farm connected through a Voltage Source Converter HVDC link. When a terrestrial grid fault occurs, power through the onshore converter reduces and the DC link voltage increases. A control system was then used to block the offshore converter. The offshore AC network voltage was reduced to achieve rapid power rejection. Reactive power at the onshore converter was controlled to support the AC network voltage according to the GB Grid Code requirements. Two cases, a 200 ms
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35

CH., Aparna, and Chand Sr. J.V.Pavan. "Performance of Flywheel Energy Storage System for Fault Ride through Support of Grid Connected Vsc-Hvdc Based Offshore Wind Farms." International Journal of Innovative Technology and Exploring Engineering (IJITEE) 9, no. 12 (2020): 189–92. https://doi.org/10.35940/ijitee.L7965.1091220.

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For the sake of uninterrupted power supply to the loads we are using renewable energy sources. Among them wind energy and the solar energy is the most familiar renewable energy sources we are using now-a-days. Voltage source converter based high voltage DC transmission is considered as future of offshore power transmission. This paper proposes the high voltage DC power transmission system and maintains system balance during each faults. This results in the voltage and current losses on the switching devices. This strategy implements the flywheel energy storage system based on a squirrel cage i
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36

Wang, Yingjie, Bo Yang, Huifang Zuo, Haiyuan Liu, and Haohao Yan. "A DC Short-Circuit Fault Ride Through Strategy of MMC-HVDC Based on the Cascaded Star Converter." Energies 11, no. 8 (2018): 2079. http://dx.doi.org/10.3390/en11082079.

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A modular multilevel converter based high voltage direct current (MMC-HVDC) with DC fault self-clearing is adopted to deal with the DC short-circuit fault. However, the constant power load characteristic of the sub-modules causes capacitor voltages to diverge and the converter to go out of hot standby. To address this problem, a novel DC short-circuit fault ride through strategy is proposed. According to the polarities of grid voltages, the working or blockage of the upper and lower bridge arms is chosen according to six sections to obtain a cascaded star converter. The capacitor voltages of M
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37

Yang, Fan, Hechong Chen, Gang Han, et al. "A Fault Direction Criterion Based on Post-Fault Positive-Sequence Information for Inverter Interfaced Distributed Generators Multi-Point Grid-Connected System." Processes 12, no. 7 (2024): 1522. http://dx.doi.org/10.3390/pr12071522.

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In response to the poor reliability in identifying fault direction in distribution networks with Inverter Interfaced Distributed Generators (IIDGs), considering the control strategy of low-voltage ride-through, a fault direction criterion based on post-fault positive-sequence steady-state components is proposed. Firstly, the output steady-state characteristics of IIDGs considering the low-voltage ride-through capability are analyzed during grid failure, and the applicability of existing directional elements in a distribution network with IIDGs connected dispersively is demonstrated. Subsequent
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38

Zhuang, Shenglun, Xiangmei Kong, Huixing Qu, and Sujuan Sun. "A smooth switching strategy for steady-state operation control and fault transient control of doubly fed induction generator." Journal of Physics: Conference Series 2855, no. 1 (2024): 012004. http://dx.doi.org/10.1088/1742-6596/2855/1/012004.

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Abstract As the proportion of wind power generation systems in power systems continues to rise, their dynamic response during system malfunctions has gained significant importance. As the grid short-circuit ratio continues to decrease, traditional fault ride-through algorithms for wind power generators may no longer be applicable. This is evidenced by voltage oscillations under significant disturbances and overvoltage issues during low-voltage ride-through, which are further aggravated during asymmetric fault conditions. Therefore, this paper focuses on the low-voltage ride-through issues of d
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Ananth, D. V. N., and G. V. Nagesh Kumar. "Low Voltage Ride-through for Doubly Fed Induction Generator Using Battery-Storage System." International Journal of Power Electronics and Drive Systems (IJPEDS) 7, no. 2 (2016): 481. http://dx.doi.org/10.11591/ijpeds.v7.i2.pp481-497.

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In this paper, enhanced field oriented control technique (EFOC) was adopted in Rotor Side Control (RSC) of DFIG converter for improved response during severe faults. The work is intended to damp pulsations in electromagnetic torque, improve voltage mitigation and limit surge currents and to enhance the operation of DFIG during voltage sags. The converter topology uses a battery energy storage system with capacitor storage system to further enhance operation of DFIG during faults. The battery and capacitor system in coordination provide additional real and reactive power support during faults a
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Ai, Liang, Leicheng Bai, Ke Du, et al. "Comparative Study on Different Temporary Blocking Schemes of Valve Control in VSC-HVDC System." Journal of Physics: Conference Series 2479, no. 1 (2023): 012005. http://dx.doi.org/10.1088/1742-6596/2479/1/012005.

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Abstract To improve the fault ride-through capability of the VSC-HVDC system and ensure the safe operation of the equipment, it is necessary to design the temporary blocking scheme of the converter valve of VSC-HVDC. Taking the Chongqing Hubei Back to Back VSC-HVDC Project as the research object, this paper first analyzes the fault types of the VSC-HVDC system, obtains the fault types of the AC fault ride-through; and then, according to the requirements of system fault ride-through, three-valve controlled temporary blocking schemes are designed: global blocking, phase splitting blocking and br
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Cui, M., K. J. Li, Z. J. Liu, and L. Z. Li. "DC Fault Ride-Through Strategy Based on Overmodulation." IOP Conference Series: Earth and Environmental Science 701, no. 1 (2021): 012075. http://dx.doi.org/10.1088/1755-1315/701/1/012075.

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Kondoh, Mizuno, and Funamoto. "Fault Ride-Through Characteristics of Small Wind Turbines." Energies 12, no. 23 (2019): 4587. http://dx.doi.org/10.3390/en12234587.

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There is significant potential for an increase in the use of kilowatt-class small wind turbines (SWTs) in Japan due to reduced limitations with respect to installation, despite their high cost. At this stage, the Japanese grid code has not been considered sufficiently with respect to grid-connected SWTs, and the addition of fault ride-through (FRT) requirements for SWTs has been requested. Moreover, the FRT of SWTs is challenging to achieve owing to the low inertia constants when compared with those of large-scale wind turbines, which result in significant acceleration of the rotor speed and a
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Arab Ansari, Sajad, Amir Reza Mizani, Siamak Ashouri, and Javad Shokrollahi Moghani. "Fault Ride-Through Capability Enhancement for Microinverter Applications." Journal of Renewable Energy 2019 (March 7, 2019): 1–12. http://dx.doi.org/10.1155/2019/1036156.

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Due to the fast growth of single-phase grid-connected photovoltaic (PV) systems, the existing grid codes are expected to be modified to guarantee the availability, quality, and reliability of the electrical system. Therefore, the future single-phase PV systems should become smarter and support low voltage ride-through (LVRT) capability, which are required for three-phase wind power systems. In this paper, the operation principle of a flyback inverter in a low-voltage ride-through operation is demonstrated in order to map future challenges. The steady state performance of the flyback inverter u
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Piya, Prasanna, Mohammad Ebrahimi, Masoud Karimi-Ghartemani, and Sayed Ali Khajehoddin. "Fault Ride-Through Capability of Voltage-Controlled Inverters." IEEE Transactions on Industrial Electronics 65, no. 10 (2018): 7933–43. http://dx.doi.org/10.1109/tie.2018.2803765.

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Hansen, Anca D., and Gabriele Michalke. "Fault ride-through capability of DFIG wind turbines." Renewable Energy 32, no. 9 (2007): 1594–610. http://dx.doi.org/10.1016/j.renene.2006.10.008.

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Ling, Yu. "Study of the influence of different feed-forward voltage compensation terms on the fault ride-through capability of doubly fed induction generator wind turbines." Wind Engineering 41, no. 3 (2017): 147–59. http://dx.doi.org/10.1177/0309524x17699922.

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As a result of the increasing wind power penetration into power systems, the wind farms, especially with doubly fed induction generators, are required to have the fault ride-through capability. The article presents a study on the influence of three different feed-forward voltage compensation terms in rotor current control on the fault ride-through capability of doubly fed induction generator wind turbines. The study focuses on the enhancement of fault ride-through capability for doubly fed induction generator wind turbines by adopting different feed-forward voltage compensation terms in rotor
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Solak, Krzysztof, Waldemar Rebizant, and Frank Mieske. "Development and Validation of the High-Voltage Direct-Current Modular Multilevel Converter (HVDC-MMC) Model for Converter Transformer Protection Studies." Sensors 24, no. 10 (2024): 3126. http://dx.doi.org/10.3390/s24103126.

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The electrical protection of power networks with fault contribution from inverter-based power sources imposes new application challenges that have to be dealt with by protection engineers. This paper describes the development of a study case model of an HVDC-MMC link for testing the protection behaviour of connected converter transformers. The paper summarises the implementation and validation of the converter control as well as enhancements to provide Fault Ride-Through capability and fast fault current injection as required by the German Technical Connection Rules for HVDC. The grid code sta
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Lee, Yoo, Yoon, and Jang. "Advanced Fault Ride-through Strategy by an MMC HVDC Transmission for Off-Shore Wind Farm Interconnection." Applied Sciences 9, no. 12 (2019): 2522. http://dx.doi.org/10.3390/app9122522.

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In order to solve the problems brought upon by off-shore wind-power plants, it is important to improve fault ride-through capability when an on-shore fault occurs in order to prevent DC overvoltage. In this paper, a coordinated control strategy is implemented for a doubly-fed induction generator (DFIG)-based off-shore wind farm, which connects to on-shore land by a modular multilevel converter (MMC)-based high voltage direct current (HVDC) transmission system during an on-shore fault. The proposed control strategy adjusts the DC voltage of the off-shore converter to ride through fault conditio
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Manonmani, N., V. Subbiah, and L. Sivakumar. "Differential Evolution Based IDWNN Controller for Fault Ride-Through of Grid-Connected Doubly Fed Induction Wind Generators." Scientific World Journal 2015 (2015): 1–15. http://dx.doi.org/10.1155/2015/746017.

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The key objective of wind turbine development is to ensure that output power is continuously increased. It is authenticated that wind turbines (WTs) supply the necessary reactive power to the grid at the time of fault and after fault to aid the flowing grid voltage. At this juncture, this paper introduces a novel heuristic based controller module employing differential evolution and neural network architecture to improve the low-voltage ride-through rate of grid-connected wind turbines, which are connected along with doubly fed induction generators (DFIGs). The traditional crowbar-based system
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Ye, Yi, Zelin Yang, Jiawei Hu, Haopeng Yi, and Lu Zhang. "Control Strategy of Doubly-Fed Induction Generator under Zero Voltage Fault of Power Grid." Sustainability 14, no. 23 (2022): 15835. http://dx.doi.org/10.3390/su142315835.

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For improving the zero-voltage ride through the capability of a doubly fed induction generator in high proportion new energy grid in extreme faults, a coordinated control scheme of hardware and optimal control strategy is proposed. A high-temperature superconductive-fault current limiter suppresses stator fault current, adaptive virtual impedance control and active dynamic reactive power support control act on the back-to-back converter of wind turbines as optimal control strategies. Optimizing the control strategy without changing the controller structure is beneficial to engineering implemen
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