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检索条件"机构=Jiangsu Energy Storage Variable Current and Application Engineering Technology Research Center"

共 38 条记录，以下是21-30 订阅

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

Development of Environmentally Friendly and Efficient New En...

引用

IEEE Conference on energy Internet and energy System Integration (EI2)

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

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.

关键词： Rails Vibrations Costs Pollution Transportation System integration Traction motors

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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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jiangsu Annual Conference on Automation (JACA 2022)

作者： G. Li S. Huang H. Li X. Wang Jiangsu Engineering Technology Research Center for Energy Storage Conversion and Application China Electric Power Research Institute Nanjing People's Republic of China School of Automation Southeast University Nanjing People's Republic of China

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.

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research on Zero Sequence Circulating current Suppression of Parallel Inverter System with Common AC and DC Bus

Research on Zero Sequence Circulating Current Suppression of...

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IEEE Conference on energy Internet and energy System Integration (EI2)

作者： Guanjun Li Haojie Yu Zhao Liu Jiangsu Engineering Technology Research Center for Energy Storage Conversion and Application (China Electric Power Research Institute) Nanjing China Nanjing University of Science and Technology Nanjing China

ISBN: (纸本)9781665434263

The parallel inverter system with common AC and DC bus has the advantages of small size, low cost and high reliability. However, due to the inconsistency of switch status and main circuit parameters, zero sequence circulating current will be generated between inverters, which will cause serious distortion of grid-connected current, increase of system loss, and decrease of efficiency. This paper focuses on the research on zero-sequence circulating current suppression of parallel inverter systems with common AC and DC bus. First, the zero-sequence circulating current model of parallel inverters is analyzed, and the reasons for the generation of zero-sequence circulating current are analyzed. The circulation suppression method with zero-sequence component feedforward based on traditional PI control is proposed. Finally, the effectiveness of the proposed control method is verified by simulation and experiment.

关键词： Costs Conferences System integration Switches Distortion Inverters Internet

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research on Coordinated Frequency Regulation Control of Wind Turbines

Research on Coordinated Frequency Regulation Control of Wind...

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

作者： Hongfen Cui Deshun Wang Bo Yang Jinhua Xue Sheng Liu Ying Zhu China Electric Power Research Institute Nanjing China Jiangsu Engineering Technology Research Center for Energy Storage Conversion and Application Nanjing China College of Energy and Electrical Engineering Hohai University Nanjing China

variable speed wind turbines (WTs) are linked to the grid via inverters, so the rotor cannot provide inertial support for grid frequency fluctuation. In recent years, the proportion of wind power is increasing, which seriously threatens the frequency stability of power system. In this paper, two traditional inertial control methods are researched. Based on this research, the variable coefficient integrated inertial (VCII) control method is proposed, which enables the output power of WT based on permanent magnet synchronous generator (PMSG) to be changed on the basis of the degree of frequency change. On this basis, a coordinated frequency regulation control strategy with VCII control combined with pitch angle control is proposed. By adopting different control methods for different wind speeds, the WT can participate in grid frequency regulation more targeted. At last, the simulation shows that the coordinated frequency regulation control method can fully stimulate the frequency regulation ability of WT.

关键词： Wind speed Rotors Power system stability Wind power generation Synchronous generators Stability analysis Regulation

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Stability Analysis of Virtual Synchronous Generator Based on Sequence Impedance Model for an energy storage Converter in Weak Grid

Stability Analysis of Virtual Synchronous Generator Based on...

引用

Sustainable Power and energy Conference (iSPEC)

作者： Guanjun Li Haojie Yu Guowei Chen Zhizhou Li Jiangsu Engineering Technology Research Center for Energy Storage Conversion and Application China Electric Power Research Institute Nanjing China School of Automation Nanjing University of Science and Technology Nanjing China

ISBN: (纸本)9781665414401

In this paper, the stability performance is analyzed in detail for an energy storage converter with the virtual synchronous generator (VSG) control strategy in weak grid. By applying the VSG strategy, the mathematical model of the grid-connected converter is established, including the active-frequency and the reactive-voltage controller. Moreover, in order to analyze the stability of the energy storage converter using VSG in weak grid, a sequence impedance model of the system is derived to achieve stability analysis by the harmonic linearization method. Meanwhile, the impact of the grid-side filter is introduced into the impedance model. Based on which, combined with the small signal model of the energy storage converter, the stability of the converter in weak grid is studied through the Nyquist stability criterion. The stability analysis indicates that the converter with VSG can still operate stably under weak grid condition. Finally, the simulation verified the feasibility and correctness of the above analysis.

关键词： Analytical models Stability criteria Power system stability Harmonic analysis Synchronous generators Mathematical models Steady-state

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Optimal allocation of energy storage systems participating in frequency regulation markets

Optimal allocation of energy storage systems participating i...

引用

CIRED 2022 Shanghai Workshop

作者： D. Wang S. Jiang J. Xue S. Wen M. Zhu Jiangsu Engineering Technology Research Center for Energy Storage Conversion and Application Electric Power Research Institute Nanjing People's Republic of China Key Laboratory of Control of Power Transmission and Conversion Ministry of Education Shanghai Jiao Tong University Shanghai People's Republic of China

The increasing penetration of renewable energy will bring great pressure to conventional generators in frequency regulation. Due to the rapid ramping capability and response, energy storage systems (ESSs) are expected to assist traditional generators to regulate the frequency. However, high investment costs and degradation effect of ESSs limit the large-scale application. Therefore, proper sizes of ESSs and efficient bidding strategy of regulation are necessary for maximizing the profits. In this paper, the ESS sizing problem is formulated as an optimization problem under consideration of frequency regulation. To solve the problem, an economic sizing method of ESSs participating in frequency regulation is proposed, taking into account the cycle life loss. Furthermore, a dynamic programming method is employed to decide the optimal bidding strategy, then the sizing of ESSs can be further optimized. Various scenarios are considered and simulation results demonstrate the effectiveness of proposed method. With the help of the proposed method, the operation cost of the ESSs is reduced.

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DC grid demonstration to verify the control flexibility of the grid connected with renewable power generation and energy storage 15

DC grid demonstration to verify the control flexibility of t...

引用

15th IET International Conference on AC and DC Power Transmission, ACDC 2019

作者： Yao, Liangzhong Zhuang, Jun Yang, Bo Wang, Zhibing Cao, Yuanzhi Road Beijing China Jiangsu Engineering Technology Research Center for Energy Storage Conversion and Application No.8 Nanrui Road Nanjing China

ISBN: (纸本)9781839530074

This paper presents a four terminal bipolar DC grid demonstrator, composed of two VSCs and two DC/DC converters in a loop topological structure. The wind and photovoltaic power generations together with battery energy storage are connected with the DC grid through three converters respectively, in order to demonstrate the control flexibility of the grid-connected fluctuated renewables and its shaving using energy storage. The DC grid demonstration system is built in the laboratory environment with homothetic design in terms of the actual HVDC project data, and the corresponding coordinated control strategies on system voltage and power are studied. A SCADA system to monitor and control the DC grid is designed and developed. A series of operational and control scenarios of the DC grid are studied and verified, such as the start-up and shutdown of the DC grid, multi-sources hybrid-operation, shaving power fluctuations, wind generation shutdown and single-polar failure, etc. Those scenarios are also compared with the results obtained from the MATLAB/Simulink software simulations. © 2019 Institution of engineering and *** rights reserved.

关键词： Demonstrations

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Review on modeling of wind power generation systems

Review on modeling of wind power generation systems

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2019 IEEE PES Innovative Smart Grid Technologies Asia, ISGT 2019

作者： Qian, Minhui Zhao, Dawei Wu, Fubao Zhu, Lingzhi Chen, Ning Li, Haifeng Zhang, Ningyu Renewable Energy Research Center China Electric Power Research Institute Jiangsu Engineering Technology Research Center for Energy Storage Conversion and Application State Key Laboratory of Operation and Control Renewable Energy and Storage Systems Nanjing China State Grid Jiangsu Electric Power Company Nanjing China

ISBN: (纸本)9781728135205

In recent years, renewable energy generations, such as wind power generation, have a rapid development in a large scale all over the world. The development trend of renewable energy, from auxiliary power supply to main power supply even leading power supply, is becoming increasing obviously. Due to the fluctuation and intermittence of wind power, the safe and stable operation of power system has been threatened. The modeling of wind power generation system has become a key factor and hotspot issue that influence the interaction between wind plant and power grid, with scholars domestic and overseas all weight in. Hence institutions and organizations, such as GE, IEC, WECC, EPRI, CEPRI, also have attached great importance to this issue, relevant research guideline or report about wind power generation system modeling have been published continuously. The existing research both in domestic and outside is presented first in this paper, then the problems in modeling are analyzed, suggestions and prospects for future research are given at last. © 2019 IEEE.

关键词： Wind turbines

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Review on modeling of photovoltaic power generation systems

Review on modeling of photovoltaic power generation systems

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2019 IEEE PES Innovative Smart Grid Technologies Asia, ISGT 2019

作者： Zhao, Dawei Ge, Luming Qian, Minhui Jiang, Dajun Qu, Linan Han, Hualing Liu, Yanzhang Wang, Xudong Renewable Energy Research Center China Electric Power Research Institute State Key Laboratory of Operation and Control of Renewable Energy Storage Systems Jiangsu Engineering Technology Research Center for Energy Storage Conversion and Application Nanjing China Electric Power Research Institute State Grid Tianjin Electric Power Company Tianjin China

ISBN: (纸本)9781728135205

In recent years, photovoltaic (PV) power generation has developed rapidly at China and abroad. PV power generation is on the trend from auxiliary power supply to main power supply even leading power supply. Due to the fluctuation and intermittent characteristics of PV power generation, and zero inertia, the integration of large-scale grid-connected PV power generation may have a negative impact on the stability of the power system. Modeling grid-connected PV power generation systems is the key factor to investigate the influence between it and other parts of power system. Modeling of PV is also a hot issue that has been studied continuously for many years around the world. GE, WECC, CIGRE, CEPRI and so on have attached great importance to this issue and have published many research results. The existing research at China and abroad is reviewed in this paper, the existing problems are analyzed, and suggestions for future research are given. © 2019 IEEE.

关键词： Electric power transmission networks

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research on the dual-terminal ring topology-based dc microgrid system

Research on the dual-terminal ring topology-based dc microgr...

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作者： Fei, Yijun Zhuang, Jun Li, Guanjun Yao, Liangzhong Yang, Bo State Grid Jiangsu Electric Power Co. Ltd Nanjing China Jiangsu Engineering Technology Research Center for Energy Storage Conversion and Application China Electric Power Research Institute Nanjing China

A dual-terminal ring topology dc microgrid is studied and discussed in this study, the topology includes photovoltaic power generation, supercapacitor system, energy storage system, vehicle-to-grid charger and dc loads, this typical dc microgrid is fully filled with all essential elements. The key equipment is summarised with relative topology and corresponding control strategies. Four operational modes are outlined in grid-connected and stand-alone mode. A relative simulation is undertaken by Matlab/Simulink software packet and three key scenarios are analysed on both steady state and dynamic state, the research results show that the dual-terminal ring topology-based dc grid has advantages on reliability and flexibility. © 2019 Institution of engineering and *** right reserved.

关键词： Topology

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