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

作者： Xiaoyun Song Danxi Liang Jie Song Guizhi Xu Zhanfeng Deng Meng Niu State Key Laboratory of Advanced Power Transmission Technology Global Energy Interconnection Research Institute Co. Ltd. Beijing China State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems China Electric Power Research Institute Beijing China

ISBN: (纸本)9781665434263

There is a hydrogen production route without carbon emissions, that uses power from renewable sources such as wind and solar energy to generate electricity and then electrolyzes water to produce hydrogen. So it is a clean energy in the true sense, and the hydrogen produced is also called “green hydrogen”. Hydrogen production by electrolysis of water is an important way to achieve zero carbon emissions. In the long run, hydrogen production by electrolysis of water is expected to become the main hydrogen production method. Here, two methods were reviewed for hydrogen production: alkaline water electrolysis (AWE) and proton exchange membrane water electrolysis (PEMWE). Also technical characteristics and technical development status of hydrogen production by water electrolysis were analyzed. Finally, the key research and development directions of AEW and PEMWE were respectively proposed.

关键词： Industries renewable energy sources Costs Fluctuations Hydrogen Green products Production

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Rotational-Inertia-and-Voltage-Stiffness Compensator to Improve Grid Voltage Dynamic

Rotational-Inertia-and-Voltage-Stiffness Compensator to Impr...

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2019 IEEE Sustainable Power and energy Conference, iSPEC 2019

作者： Shang, Lei State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems Beijing China Wuhan China

ISBN: (纸本)9781728149301

This paper proposes a novel power-electronic-based facility to improve the grid frequency and voltage dynamic using its virtual rotational inertia and voltage stiffness, simultaneously, called rotational-inertia-and-voltage-stiffness compensator, i.e. RIVSC. The proposed RIVSC directly regulates the phase and amplitude of the internal voltage according to the active and reactive power errors without any current control. In this paper, the grid voltage dynamic behavior is analyzed and the effect of the proposed RIVSC is studied. Simulations are implemented to validate the proposed RIVSC to improve the dynamic behavior of the grid voltage with large-scale renewable power generations. © 2019 IEEE.

关键词： Stiffness

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On the formation and wind enhancement mechanisms of a Mongolian cyclone that caused a transmission line galloping trip in Gansu province

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Atmospheric and Oceanic Science Letters 2021年第2期14卷 28-34页

作者： Shuanglong Jin Shuanglei Feng Xiaolin Liu Bo Wang Zongpeng Song Wei Cui Cong Wang State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems China Electric Power Research Institute Co.Ltd.BeijingChina Electric Power Meteorology State Grid Corporation Joint Laboratory BeijingChina Northwest Branch of State Grid Corporation of China Xi’anShaanxi ProvinceChina

Influenced by strong winds associated with a southeastward-moving Mongolian cyclone,a severe transmission line galloping occurred in Baiyin City,Gansu Province,on 14 April *** caused a tripping incident of the transmission line in this *** on the hourly,0.5°×0.5°,ECMWF ERA5 reanalysis data,this study investigated the formation mechanisms of the Mongolian cyclone and its associated strong *** from the vorticity budget indicate that the convergence-related vertical stretching and the upward transport of cyclonic vorticity governed formation of the Mongolian cyclone in this event;whereas,tilting and export of cyclonic vorticity from the central region of the cyclone mainly decelerated the cyclone’s *** kinetic energy(KE)budget shows that the wind associated with the Mongolian cyclone was mainly enhanced by the positive work of the pressure gradient *** some typical strong wind events in Northwest China,during this event,no significant downward momentum transportation from the upper troposphere was *** vertical transport of KE exerted a slightly favorable effect on the KE increase around the location where the transmission line galloping trip *** contrast,the horizontal transport mainly caused an export of KE from this region,which applied an overall negative effect on the wind enhancement associated with the Mongolian cyclone.

关键词： Mongolian cyclone Kinetic energy state grid Transmission line galloping trip

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Analysis of Cyber Attacks on Wind Power Generation systems in Damping Inter-area Oscillations of Power systems

Analysis of Cyber Attacks on Wind Power Generation Systems i...

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

作者： Guoqing He Yang Liu Q. H. Wu Kaishun Xiahou State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems China Electric Power Research Institute Beijing China School of Electric Power Engineering South China University of Technology Guangzhou China

ISBN: (纸本)9781665434263

With the application of damping controllers developed using remote feedback signals provided by phasor measurement unit (PMU) and wida-area measurement system (WAMS), the wind power generation system (WPGS) can damp the inter-area oscillations of power system. Nevertheless, the damping control system of WPGS may suffer from malicious cyber attacks, which will deteriorate the performance of WPGS and even destabilize the power system operation. This paper considers the various types of cyber attacks, including false data injection attack (FDIA), time-delay attack (TDA), denial of service (DoS) attack, coordinated cyber-physical attack (CCPA), and analyzes the effects of these cyber attacks on WPGS in damping inter-area oscillations of power system. Simulation studies are carried out on a two-area four-machine power system integrated with WPGS to investigate the cyber security of WPGS.

关键词： Damping Power measurement Simulation System integration Wind power generation control systems Phasor measurement units

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Research and Engineering Field-test of a renewable energy Stations Rapid Power control Technology for Improving Power Grid Stability

Research and Engineering Field-test of a Renewable Energy St...

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2021 International Conference on Power System Technology, POWERCON 2021

作者： Qu, Chunhui Zhang, Xiangwen Hu, Shuwu Lan, Jie Li, Yang Huang, Fengyi China Electric Power Research Institute State Key Laboratory of Operation and Control of Renewable Energy Storage Systems Beijing China Harbin Electric Corporation Wind Power Co. Ltd Wind Power Research Institute Xiangtan China DongFang Electric Wind Power Co. Ltd RD Centre Deyang China Shenzhen Hopewind Electric Co. Ltd Software Dept ShenZhen China

ISBN: (纸本)9781665407373

With the rapid development of renewable energy, a high proportion of wind power system in the "Three North"region has basically taken shape, the power electronization in the power grid is serious, the operation of the power grid encounters a series of difficulties and challenges, the level of system security and stability continues to decline, the capacity of traditional control and conventional resources is limited, and renewable energy is urgently needed to participate in power regulation and improve the ability to participate in power emergency control and improve the stability of power grid. In this paper, a system scheme based on rapid power control of renewable energy station is proposed. By transforming the existing power generation equipment, adjusting and upgrading the corresponding communication mode, acquisition process and control algorithm, a rapid power control device for renewable energy station is developed, which realizes flexible control to replace rigid control and rapid power adjustment continuously, The scheme has been applied in the DC field-test system platform of Zhangbei Test Base, state key laboratory of renewable energy and energy storage. The field test shows that the whole scheme meets the design requirements, and the test results achieve the expected purpose, which verifies the effectiveness and advancement of the technology. © 2021 IEEE.

关键词： Power control

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Extreme scenario extraction of a grid with large scale wind power integration by combined entropy-weighted clustering method

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Global energy Interconnection 2020年第2期3卷 140-148页

作者： Kui Luo Wenhui Shi Weisheng Wang State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems China Electric Power Research InstituteHaidian DistrictBeijing 100192P.R.China

Large-scale integration of wind power into a power system introduces uncertainties to its operation and planning,making the power system operation scenario highly diversified and *** conventional power system planning,some key operation modes and most critical scenarios are typically analyzed to identify the weak and high-risk points in grid *** these scenarios may not follow traditional empirical patterns due to the introduction of large-scale wind *** this paper,we propose a weighted clustering method to quickly identify a system’s extreme operation scenarios by considering the temporal variations and correlations between wind power and load to evaluate the stability and security for system ***,based on an annual time-series data of wind power and load,a combined weighted clustering method is used to pick the typical scenarios of power grid operation,and the edge operation points far from the clustering center are extracted as the extreme *** contribution of fluctuations and capacities of different wind farms and loads to extreme scenarios are considered in the clustering process,to further improve the efficiency and rationality of the extreme-scenario extraction.A set of case studies was used to verify the performance of the method,providing an intuitive understanding of the extreme scenario variety under wind power integration.

关键词： Wind power Load Weighted clustering Entropy weight Extreme scenario extraction

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Requirement of Generalized Modeling Technology and Parameter Identification for Wind Turbines

Requirement of Generalized Modeling Technology and Parameter...

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

作者： Hongchang Qi Yongning Chi Yan Li Cong Wang Yiwen Fan Yu Xiao China State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems China Electric Power Research Institute Beijing China School of Electrical and Electronic Engineering North China Electric Power University Beijing China

ISBN: (纸本)9781665434263

There are more than 80 megawatt-scale wind turbine manufacturers in China, and the current technical level of some manufacturers cannot provide accurate mathematical models of wind turbines, and there is no guidance for unified modeling methods in China. The International Electrotechnical Commission (IEC) has basically clarified the classification of various wind turbines, and has determined the four types of wind turbines that are currently mainstream in the market. In the current market in China, most of the III-type and IV -type turbines with variable speed and constant frequency solutions. Therefore, establishing a generalized wind power model and its parameter library, and then determining the actual parameters of each different turbines through parameter identification technology will be the main research and development direction of subsequent wind power modeling. It is an important scientific and technical basis for wind power simulation research and verification analysis capabilities which is necessary for forming a standardized and reliable system safety and stability analysis and evaluation system after large-scale wind power is connected to the power grid. It is the main research direction in the future to carry out generalized modeling research for the mainstream wind turbines in the market, so that the wind turbine / wind farm model can be standardized and generalized and can be applied to different simulation tools and different unit models.

关键词： Analytical models Parameter estimation IEC Wind power generation Power system stability Wind farms Mathematical models

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Technical requirements and schemes for analysis and control of transient response characteristics of active power restoration of wind power

Technical requirements and schemes for analysis and control ...

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Sustainable Power and energy Conference (iSPEC)

作者： Cong Wang Yan Li Hongchang Qi Xinshou Tian Yu Xiao Xiangyu Li China Electric Power Research Institute China State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems Beijing China School of Electrical and Electronic Engineering North China Electric Power University Beijing China

ISBN: (纸本)9781665414401

China’s relevant standards for wind power access to the power grid stipulate that the wind farm should have low-voltage ride through capability, dynamic reactive power support capability from the wind farm access point and other basic technical requirements. On the one hand, the transient response characteristics of wind turbines are the main determinant of the transient response characteristics of wind farms, while the transient response characteristics of wind turbines connected to the grid are not consistent in the current market. On the other hand, the transient response characteristics of wind farms cannot be simply understood as simple amplification or superposition of the transient response characteristics of wind turbines. Because the electrical distribution of wind turbines in a wind farm has the characteristics of dispersion and correlation, the mutual interaction between wind turbines will also have a significant impact on the transient response characteristics of the wind farm. For the future research trend of wind power grid connection stability, the main work of this paper is as follows. First, based on the published domestic wind turbine model verification standards, an electromechanical transient simulation model is established to more accurately simulate the transient response characteristics of wind turbine active power recovery. With that, the transient response characteristics of wind turbines, the interaction between wind turbines and the influence of wind farm collection system on the transient response characteristics of wind farm active power recovery are studied, and the transient simulation model of wind farm is established. Finally, the influence of grid-connected wind farm active power recovery characteristics on the system is analyzed. And corresponding active power recovery and reactive power output control strategies to improve the stability of wind power grid-connected are proposed. This paper focuses on the research on technical requ

关键词： Technical requirements Transient response Stability criteria Wind power generation Wind farms Power system stability Mathematical models

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Study on Power control Optimization Technology for Wind Turbines During Power Grid Transient Process

Study on Power Control Optimization Technology for Wind Turb...

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

作者： Cong Wang Yan Li Yiwen Fan Yongning Chi Yu Xiao Hongchang Qi China State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems China Electric Power Research Institute Beijing China School of Electrical and Electronic Engineering North China Electric Power University Beijing China

ISBN: (纸本)9781665434263

Due to the increasing proportion of wind power in regional grids the four corners of the earth and the withdrawal of traditional fossil power sources from operation, wind power is required to take on more responsibility in the grid and proactively involved in controlling the actual operation of the grid on the basis of ensuring safe and stable access to the grid. The LVRT technology for wind turbines in transient processes is now more mature, but the active support technology of wind power to the grid is now mainly reflected in the single function implementation and for the steady state support of the system, as more and more AC and DC mixed connection phenomenon in the grid, and its operating conditions are very complex. This has led to a lack of research on the active support of the grid under various transient processes. This paper investigates the requirements of wind turbines for power active support optimal control techniques during grid transients, the research on the optimization of the reactive voltage control technology in the transient process of wind turbines is not perfect, one of it is the double-fed wind turbines under grid faults and the dynamic state of full power variable-speed wind turbines are unclear, and there are no targeted method for active support of transient process voltages; the other one is the two types of wind turbines, doubly fed wind turbines, as well as full power variable speed wind turbines face the problem of adaptive control of active power during transient processes.

关键词： Power control Process control Switches Wind power generation Power grids Wind turbines Circuit faults

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Improved Direct Power control of Doubly Fed Induction Generator without Phase-Locked Loop

Improved Direct Power Control of Doubly Fed Induction Genera...

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2020 IEEE Sustainable Power and energy Conference, iSPEC 2020

作者： Kong, Huiwen He, Jing Liu, Yikai Cheng, Peng Ma, Jing China Institute of Energy and Transportation Integrated Development North China Electric Power University Changping Direct Beijing102206 China State Key Laboratory of Operation and Control of Renewable Energy Storage Systems China Electric Power Research Institute Haidian Direct Beijing100192 China

ISBN: (纸本)9781728191645

Direct power control is widely used in renewable power generation, due to the advantages of simple implementation and fast dynamic response. This paper proposes an improved direct power control of doubly fed induction generator (DFIG) without phase-locked loop (PLL), which is implemented in the stationary reference frame. In order to deal with the time-varying voltage matrix-related dynamics of active and reactive powers for a DFIG in the stationary reference frame, the modulated active and reactive voltage are introduced. By this means, the time-varying voltage matrix-related dynamics of DFIG active and reactive powers are changed into a constant coefficient-related equation, thereby resulting in a simpler implementation. Meanwhile, the modulated rotor voltage can be obtained from the modulated active and reactive voltages based on DFIG rotor position. Then, a linear controller can be introduced to achieve the decoupling regulation and fast tracking of active and reactive powers. Finally, the experimental results are provided to confirm the effectiveness and frequency adaptability of the proposed method. © 2020 IEEE.

关键词： Wind power

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