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2024 3rd International Conference on New energy, energy storage and Power engineering, NESP 2024

作者： Zhu, Shaojie Tao, Yibin Li, Guanjun Xu, Zheng Zhang, Jianzhong Jiangsu Energy Storage Variable Current and Application Engineering Technology Research Center China Electric Power Research Institute Jiangsu Nanjing210003 China School of Electrical Engineering Southeast University Jiangsu Nanjing210096 China

Owing to the uncontrollable and intermittent nature of wind resources, the frequency support capability of wind turbine generators has strong uncertainty. Employing energy storage systems could improve the frequency support capacity and stability of wind farms. This paper proposes a coordinated control strategy wherein wind power and energy storage collaboratively engage in frequency support operations. At the wind farm and energy storage level, the energy storage gives priority to providing the basic part of the incremental active power, and the wind turbine kinetic energy only takes the deficit. At the wind turbine level, the active power support capacity (APSC) of doubly fed induction generator (DFIG) units is proposed, based on which the coordinated control among wind turbines is designed. Simulation results are presented to validate the effectiveness of the proposed methodology. © Published under licence by IOP Publishing Ltd.

关键词： Windmill

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research on Low-voltage Ride-through Control Strategy of VSG under Symmetrical Grid Fault 8

Research on Low-voltage Ride-through Control Strategy of VSG...

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8th Asia Conference on Power and Electrical engineering, ACPEE 2023

作者： Tao, Yibin Wu, Fubao Yang, Bo Zhu, Shaojie Hai, Chen Liu, Haoming China Electric Power Research Institute Jiangsu Energy Storage Variable Current and Application Engineering Technology Research Center Nanjing China Hohai University College of Computer and Information Engineering Nanjing China Hohai University College of Energy and Electrical Engineering Nanjing China

ISBN: (纸本)9798350345520

By simulating the properties of synchronous generators (SG), the virtual synchronous generator (VSG) makes the converter have the inertial damping characteristics of SG and plays an essential role in improving the system inertia and supporting the grid voltage. However, when the grid voltage falls, VSG will face risks such as power angle divergence and overcurrent, resulting in generator disconnection and affecting the system's security and reliability. To solve the above problems, a VSG LVRT strategy with instantaneous power angle control and virtual impedance switching is proposed, which takes full advantage of VSG's flexible and controllable advantages. The proposed method can effectively control the power angle during fault and guarantee synchronous system stability. Virtual impedance is used to restrain the short-circuit current to prevent the risk of over-current and output reactive current to help restore grid voltage. Finally, the proposed LVRT control strategy is verified by using Matlab/Simulink. © 2023 IEEE.

关键词： Synchronous generators

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KPI-based Real-time Situational Awareness for Power Systems with a High Proportion of Renewable energy Sources

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CSEE Journal of Power and energy Systems 2022年第4期8卷 1060-1073页

作者： Tianhan Zhang Shengyuan Liu Weiqiang Qiu Zhenzhi Lin Lingzhi Zhu Zhao Dawei Minhui Qian LI Yang College of Electrical Engineering Zhejiang UniversityHangzhou 310027China Renewable Energy Research Center China Electric Power Research Institute(State Key Laboratory of Operation and Control of Renewable Energy&Storage SystemsJiangsu Engineering Technology Research Center for Energy Storage Conversion and Application)Nanjing 210003China

With the increasing complexity of power systems and the widespread penetration of renewable energy sources(RES),real-time situational awareness for power systems is of great significance for operational *** the impact of RES on power system operations,a situational awareness key performance index(KPI)system for power systems with a high proportion of RES is proposed in this paper,which consists of reserve capacity abundance,ramp resource abundance,center of inertia(COI)frequency deviation,interface power flow margin,synthesized voltage stability,and angle stability ***,the KPIs are synthesized and visualized by the decision tree method and radar chart method,respectively,for monitoring the operation states(i.e,normal,alert,and emergency states)of power systems with a high proportion of *** simulations are conducted in a revised New England 16-machine 68-bus power system and an actual CEPRI-RE power system in the northwest region of China with a high proportion of *** results show that the proposed KPI-based situational awareness method is able to accurately monitor the real-time state of power systems with a high proportion of RES,and can assist power dispatchers to make effective decisions.

关键词： High proportion of renewable energy sources(RES) key performance index(KPI) situational awareness state visualization

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research on Virtual Synchronous Generator Control for Parallel Connection of Multiple Grid-Forming energy storage Converters 9

Research on Virtual Synchronous Generator Control for Parall...

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9th Asia Conference on Power and Electrical engineering, ACPEE 2024

作者： Chen, Guowei Yang, Bo Li, Haoyuan Wang, Hui Wang, Baonan Res. Center for Energy Storage Conversion and Application China Electric Power Research Institute Jiangsu Engineering Technology Nanjing China Shanghai University of Electric Power College of Computer Science and Technology Shanghai China

ISBN: (纸本)9798350309638

The parallel connection of converters facilitates the modularization of the operating system, making the internal structure of the system more flexible and variable. However, due to the low damping and low inertia characteristics of power electronic equipment, which may be certain risks when the energy storage system is connected to the power grid through a power conversion system. To address this issue, the control strategy based on virtual synchronous machine control technology for grid-forming energy storage converters is proposed, which can improve system inertia and damping. Secondly, the conduct research on the off grid control of grid type energy storage converters. Finally, the proposed control strategy was validated through simulation experiments. © 2024 IEEE.

关键词： Synchronous generators

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A distributed secondary regulation strategy for alternating-current microgrids with actuator bias faults

A distributed secondary regulation strategy for alternating-...

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2023 jiangsu Annual Conference on Automation, JACA 2023

作者： Li, Guanjun Qiu, Xuechao Wang, Ying Li, Haoyuan Wang, Xiangyu Jiangsu Engineering Technology Research Center for Energy Storage Conversion Application China Electric Power Research Institute Nanjing210003 China School of Automation Southeast University Nanjing210096 China

ISBN: (纸本)9781839539848

In this paper, a distributed secondary regulation strategy is investigated for alternating-current microgrids with actuator bias faults. Under the actuator faults, a distributed secondary regulation strategy is proposed, which achieves voltage and frequency regulations, as well as power sharing. Meanwhile, by the combination of integral-Type nonsingular terminal slidingmode control and nonlinear observer methods together, unknown and time varying actuator bias faults are estimated and compensated in finite time. Finally, some simulation results are given to validate the proposed strategy. © The Institution of engineering & technology 2023.

关键词： Actuators

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research on Low-voltage Ride-through Control Strategy of VSG under Symmetrical Grid Fault

Research on Low-voltage Ride-through Control Strategy of VSG...

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Power and Electrical engineering (ACPEE), 5th Asia Conference on

作者： Yibin Tao Fubao Wu Bo Yang Shaojie Zhu Chen Hai Haoming Liu Jiangsu Energy Storage Variable Current and Application Engineering Technology Research Center China Electric Power Research Institute Nanjing China College of Computer and Information Engineering Hohai University Nanjing China College of Energy and Electrical Engineering Hohai University Nanjing China

关键词：

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A long prediction horizon fcs-mpc algorithm with disturbance preview for three-phase inverters

A long prediction horizon fcs-mpc algorithm with disturbance...

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2023 jiangsu Annual Conference on Automation, JACA 2023

作者： He, Xianghui Huang, Saijin Li, Guanjun Li, Haoyuan Wang, Xiangyu School of Automation Southeast University No. 2 Si Pai Lou Nanjing Jiangsu210096 China Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education China Jiangsu Engineering Technology Research Center for Energy Storage Conversion Application China Electric Power Research Institute Nanjing Jiangsu210003 China

ISBN: (纸本)9781839539848

This paper derives an efficient control algorithm to deal with the output voltage tracking control problem of threephase inverters with multiple disturbances (including parametric perturbations of filter, abrupt disturbances caused by load switching and harmonic disturbances brought by unbalanced loads and nonlinear loads). This accomplishment is realized through the long prediction horizon finite-control-set model predictive control (FCS-MPC) and the integration of a composite disturbance observer (CDO) and a disturbance preview model into the sphere decoding algorithm (SDA). This integration facilitates the estimation and prediction of future disturbance behaviors within the inverter system, which addresses the poor disturbance-rejection limitations inherent in conventional SDA approaches employed in previous studies. The algorithm also improves the dynamic performances of the output voltage. Simulations studies are illustrated to demonstrate the feasibility and effectiveness of the proposed control algorithm. Based on the presented results, the algorithm achieves good disturbance rejection capability and maintains small tracking error. © The Institution of engineering & technology 2023.

关键词： Disturbance rejection

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Visual Performance Analysis of Off-Grid Three-Phase Inverters Based on D-Partition Method

Visual Performance Analysis of Off-Grid Three-Phase Inverter...

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2022 jiangsu Annual Conference on Automation, JACA 2022

作者： Li, Guanjun Huang, Saijin Li, Haoyuan Wang, Xiangyu Jiangsu Engineering Technology Research Center for Energy Storage Conversion Application China Electric Power Research Institute Nanjing China School of Automation Southeast University Nanjing China

ISBN: (纸本)9781839538476

This paper investigates the performance analysis problem of off-grid three-phase inverters under the conventional double closed-loop PI control. A visual and general performance analysis scheme is proposed on the basis of the D-partition method, devoted to the control parameter turning for high-performance three-phase inverters. The proposed analysis scheme is able to draw the whole stable region related to the control parameters. Moreover, by embedding a gain-phase margin tester into the inverter system, the stable region under specified frequency-domain specifications is obtained, which facilitates the parameter selection for specific performance requirements. Copyright© JACA 2022 All rights reserved.

关键词： Frequency domain analysis

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An Overcurrent Protection Control Strategy of Three-Phase Inverter for Stand-alone Distributed Generation Systems

An Overcurrent Protection Control Strategy of Three-Phase In...

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2022 International Conference on Cyber-Physical Social Intelligence, ICCSI 2022

作者： Li, Guanjun Huang, Saijin Yu, Haojie Wang, Xiangyu School of Automation Southeast University Nanjing China Jiangsu Engineering Technology Research Center for Energy Storage Conversion and Application China Electric Power Research Institute Company Nanjing China

ISBN: (数字)9781665498357

ISBN: (纸本)9781665498357

This paper investigates the output voltage tracking problem of three-phase inverters for the stand-alone distributed generation systems (DGSs). Overcurrent protection is also taken into consideration. Conventionally, cascade control scheme is utilized to restrict the currents by reference current signals. However, it is hard to realize rapid dynamic response due to the limited bandwidth of the inner current control loops. To solve the above problems, this paper designs a novel current-constraint controller under a noncascade structure. The proposed single-loop control scheme not only ensures the currents within specified ranges but also retains good dynamic performances. Moreover, the proposed controller has a simple structure which overcomes drawbacks of the cascade controller and reduces cost of hardware. Rigorous stability analysis is given under the proposed control scheme. Simulation results are also illustrated to validate the feasibility and effectiveness of the presented controller. © 2022 IEEE.

关键词： Controllers

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Development of Environmentally Friendly and Efficient New energy Rail Locomotives for Industrial and Mining Enterprises 6

Development of Environmentally Friendly and Efficient New En...

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6th IEEE Conference on energy Internet and energy System Integration, EI2 2022

作者： Wang, Deshun Wu, Fubao Yang, Bo Wang, Kaiyi Li, Haoyuan Wei, Haikun Southeast University School of Automation Nanjing210096 China China Electric Power Research Institute Jiangsu Engineering Technology Research Center for Energy Storage Conversion and Application Nanjing210003 China

ISBN: (纸本)9798350347159

Diesel locomotive has the problems of high operation cost, serious pollution and high noise, thus an environmentally friendly and efficient new energy rail locomotive is studied in this paper, which can be applied to internal transportation in industrial and mining enterprises. Key parameters design methods for multi scene application are proposed, including locomotive adhesion weight, power and capacity of battery system, starting and continuous traction, motor parameters. Besides, system integration of rail locomotive is presents, which includes motor control unit, locomotive control unit, battery and BMS management system as well as traction motor. Furthermore, experiments are carried out on the new rechargeable rail locomotive, which has been put into operation in Nanjing Iron & Steel Untied Co., Ltd. The results have proved that the track electric locomotive can operate well under different working conditions. Compared with the diesel locomotive, it saves the fuel cost greatly and has higher economic benefits. © 2022 IEEE.

关键词： Traction motors

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