• 主题
高级搜索  >
历史搜索 清空历史
您现在的位置：首页> 中文期刊>其他>全球能源互联网（英文版）

全球能源互联网（英文版）

全球能源互联网（英文版）

Global Energy Interconnection
  • 发文量：237
  • 被引量：309
  • H指数：0
  • 开始收录时间：
  • CNKI综合因子：
  • 维普期刊影响因子： 1.13
  • 万方期刊影响因子：0.0
  • 创刊时间：
  • 国内刊号/CN：10-1551/TK
    国际刊号/ISSN：2096-5117
  • 发行周期：双月刊
    邮发代号：
  • 主管单位：全球能源互联网发展合作组织
    主办单位：全球能源互联网集团有限公司
全球能源互联网（英文版）-联系信息
  • 主编：
  • 电话：86-10-63411498
  • 邮箱：geijournal@geidco.org
  • 地址：
  • 邮编：100052
全球能源互联网（英文版）-获奖情况
  • 暂无获奖信息
  • 收录汇总
  • 刊内文献检索
  • 投稿信息

刊期浏览

全球能源互联网（英文版） >2021年第6期

学科

年度

全选（0）
排序：
共4384条结果
  • 摘要：This paper presents a method of tuning governor control parameters of an isolated hydropower generator considering the primary frequency performance and small-signal stability.First,generators that can be operated in isolated state are identified.Second,different schemes are proposed for generator mode switching from on-grid to off-grid state through comparison and mechanism analysis.Third,the time domain model and frequency domain model of the isolated generator governor are constructed to respectively estimate the primary frequency performance and small signal stability.Parameter sets that satisfy the pdmary frequency performance and small signal stability are acquired as optimal values of govemor control parameters.Finally,the measurement-based parameters of the governor are identified and validated using simulations to demonstrate the feasibility and effectiveness of the method.
  • 摘要：The demands for massive renewable energy integration,passive network power supply,and global energy interconnection have all gradually increased,posing new challenges for high voltage direct current (HVDC) power transmission systems,including more complex topology and increased diversity of bipolar HVDC transmission.This study proposes that these two factors have led to new requirements for HVDC control strategies.Moreover,due to the diverse applications of HVDC transmission technology,each station in the system has different requirements.Furthermore,the topology of the AC-DC converter is being continuously developed,revealing a trend towards hybrid converter stations.
  • 摘要：The economic benefits of interconnecting the power grids of Europe (EU) and China (CN) were assessed considering 100％ reliance on renewable energy (RE).Four different scenarios,energy storage without interconnection,installing additional renewable energy sources without interconnection,energy storage with interconnection,and installing additional RE sources with interconnection,were considered for the economic benefit analysis.A comparative study of these four scenarios was conducted to identify the best option for achieving hourly power balance.Further,sensitivity analysis was carried out to demonstrate the robustness of the results.Electricity interconnection between CN and EU decreases the annual additional costs by more than 30％ when compared to the absence of interconnection,which demonstrates the necessity and benefits of CN-EU electricity interconnection.
  • 摘要：Wave energy is an important renewable energy source.Previous studies of wave energy conversion (WEC) have focused on the maximum power take-off (PTO) techniques of a single machine.However,there is a lack of research on the energy and power quality of wave farm systems.Owing to the pulsating nature of ocean waves and popular PTO devices,the generated electrical power suffers from severe fluctuations.Existing solutions require extra energy storage and overrated power converters for wave power integration.In this study,we developed a master-slave wave farm system with rotor inertia energy storage;this system delivers self-smoothed power output to the grid and reduces the number of converters.Two control methods based on the moving average filter (MAF) and energy filter (EF) are proposed to smooth the output power of wave farms.RTDS simulations show that the proposed systems and control methods facilitate simple and smooth grid integration of wave energy.
  • 摘要：The intense application of Voltage Source Converter based HVDC interconnections and grids will result in a hybrid AC-HVDC-system.The operation of such a system becomes complex regarding system secudty and system operation.This paper describes major challenges and proposes potential solutions,including a combined security assessment,preventive optimization and curative actions.A coordination of both systems enables an efficient application of existing transport capacity.
  • 摘要：In recent years,a large number of high voltage direct current (HVDC) transmission projects have been connected to AC systems.This has started to have an impact on AC/DC hybrid power grids,particularly receiving terminal power grids.An HVDC system is a large-scale power electronic integrated nonlinear system,and it includes a primary system and a control and protection system.Hence,the precision and degree of detail of HVDC systems directly affect the actual effect of simulation.In recent years,in the case of the normal operation and failure of AC power grids,the abnormal fluctuation and even locking of HVDC systems caused by the inappropriate strategies of the control and protection system component have strongly affected power grids.This has significantly affected the safety and stability of receiving power grids and normal operation.In this study,the actual engineering HVDC control logic provided by a manufacturer is analyzed and simulated based on the user defined component library of the ADPSS electromagnetic transient calculation program,and an HVDC control model based on an actual system is established.The accuracy of the DC control custom model based on ADPSS is verified through the simulation of an actual power grid.
  • 摘要：With the development of superconducting technology,the electrical performance of insulating materials is drawing increasing concern.This paper is devoted to investigating resin materials and aims to test the resin requirements of impregnating procedures and design curing molds.First,the samples are prepared,and then the power-frequency breakdown,lighting surges,relative dielectric constant,and loss angle tangent of the impregnation resin are measured at room temperature and liquid nitrogen temperature.We also present the testing reference for cryogenic and high-voltage insulating materials of superconducting power devices.
  • 摘要：Conventional power systems are being developed into grid cyber physical systems (GCPS) with widespread application of communication,computer,and control technologies.In this article,we propose a quantitative analysis method for a GCPS.Based on this,we discuss the relationship between cyberspace and physical space,especially the computational similarity within the GCPS both in undirected and directed bipartite networks.We then propose a model for evaluating the fusion of the three most important factors:information,communication,and security.We then present the concept of the fusion evaluation cubic for the GCPS quantitative analysis model.Through these models,we can determine whether a more realistic state of the GCPS can be found by enhancing the fusion between cyberspace and physical space.Finally,we conclude that the degree of fusion between the two spaces is very important,not only considering the performance of the whole business process,but also considering security.
  • 摘要：Decarbonizing the power sector is a necessary step towards a low-carbon future. Interconnecting power systems on different continents could be a method to contribute to such a future, by utilizing highly efficient renewable resources around the globe, while simultaneously providing additional benefits of power system integration. In this paper, we describe the process of constructing and simulating a global interconnected power system model with high technical and temporal resolution. Being the first of its kind on the global scale, this paper is designed to showcase the proof of concept as an intermediate step to a high resolution global model, by integrating an existing European power system model with the North-American continent. The work to date has been focused on testing the methodology and building up necessary knowledge to realistically simulate the functionality of a possible future global grid. Some initial results are analysed to support the viability of the model and the concept in general. Furthermore, key factors influencing the development and optimal performance of the global interconnected power system model are identified.
  • 摘要：Running composite insulators are prone to failure due to their harsh surrounding work environment, which directly affects the safe operation of transmission lines. This paper puts forward the method of using fiber Bragg grating (FBG) as the monitors to parameters correlated with thermal and stress of the composite insulators in transmission lines at working status. Firstly, monitoring points are found out by the mechanical test on composite insulator samples. Secondly, based on the monitoring theory, this paper introduces the feasibility design frame of the composite insulator with FBG implanted in the rod and the online monitor system. At last, it describes applications of this monitor system in the field of transmission lines.
  • 摘要：The AC/DC hybrid distribution network is one of the trends in distribution network development, which poses great challenges to the traditional distribution transformer. In this paper, a new topology suitable for AC/DC hybrid distribution network is put forward according to the demands of power grid, with advantages of accepting DG and DC loads, while clearing DC fault by blocking the clamping double sub-module (CDSM) of input stage. Then, this paper shows the typical structure of AC/DC distribution network that is hand in hand. Based on the new topology, this paper designs the control and modulation strategies of each stage, where the outer loop controller of input stage is emphasized for its twocontrol mode. At last, the rationality of new topology and the validity of control strategies are verified by the steady and dynamic state simulation. At the same time, the simulation results highlight the role of PET in energy regulation.
  • 摘要：National and international policies encourage increased penetration of solar and wind energy into electrical networks in order to reduce greenhouse gas emission. Solar radiation and wind speed variations complicate the integration of wind and solar generation into power systems and delay the transition of these sources from centralized to distributed energy sources. The increased penetration of nontraditional energy sources into the electric grid stimulates the demand for large capacities in the field of energy storage. A mathematical model, which describes the operation of a proposed hybrid system, including solar PV, wind energy, and a pumped storage hydroelectric power plant is developed in this paper. This hydropower plant utilizes seawater as a lower reservoir, and only a tank has to be built in order to reduce the installation cost of the storing system. The pumped storage power plant used for compensation of the variation of the output energy from the PV and wind power plants by discharging water from the upper reservoir, which is previously pumped in the case of surplus energy from PV and wind turbine power plants. The impact of the proposed system on the grid utility is investigated in accordance with the values of energy exchange (deficits and surpluses of energy) between the considered hybrid system and the grid. The optimum design is determined by the pump and turbine capacities, upper reservoir volume, and the volume of water left in the tank for emergencies. Different scenarios of the optimum operations are presented for analysis. The results obtained from the examined scenarios indicate the ability of such a hybrid energy system to reduce the exchange of energy with the grid. This paper indicates the technical feasibility of seawater pumpedstorage hydropower plant for increasing the Egyptian national grid's ability to accept high integration of renewable energy sources.
  • 摘要：Seamless switching is an important guarantee for the inverter to work continuously without stopping when gridconnected power generation system is the transient process from grid-connected to isolated island and from isolated island reclosing. Based on the principle of pre-synchronous operation of traditional synchronous generators, this paper analyzes the principle of pre-synchronous process and its effect on the steady-state of micro grid with multiple virtual synchronous generators. At the same time, the paper analyzes the transient influence of the closed pre-synchronous switch on the power distribution of the micro grid under different phase modes. This paper proposes a pre-synchronous control strategy based on phase recognition. MATLAB/Simulink simulation software is used to verify the correctness and validity of the proposed method.
  • 摘要：This paper introduces the implementation and data analysis associated with a state-wide power quality monitoring and analysis system in China. Corporation specifications on power quality monitors as well as on communication protocols are formulated for data transmission. Big data platform and related technologies are utilized for data storage and computation. Compliance verification analysis and a power quality performance assessment are conducted, and a visualization tool for result presentation is finally presented.
  • 摘要：The Virtual Resistor based Active Damping (VR-AD) is widely employed in converters connected to the grid via LCL filters in order to mitigate the inherent resonance of the filters. Nevertheless, in digitally controlled systems, the PWM and the calculating delays modify the system characteristics in terms of frequency and phase, thus destabilizing the system and degrading the VR-AD performances, mainly in low switching frequencies. Moreover, the stability of the system is greatly affected under weak grid operation characterized by large grid impedance variation. This paper solves these problems by proposing a systematic, robust and optimized design procedure of voltage oriented PI control (VOC) with VRAD.The considered design procedure ensures robust control (sufficient stability margins) and high quality of grid current (reduced steady-state error and minimized THD value) despite the negative impact of digital time delay, grid impedance variation and filter parameters change. Simulation and experimental results are presented to show robustness and efficiency of the suggested design procedure.
  • 摘要：The Ethiopian Electric Power (EEP) has been operating and managing the national interconnected power system with dispersed and geographically isolated generators, a complex transmission system and loads. In recent years, with an increasing load demand due to rural electrification and industrialization, the Ethiopian power system has faced more frequent, widely spread and long lasting blackouts. To slash the occurrence of such incidents, identifying the system vulnerabilities is the first step in this direction. In this paper, the vulnerability assessment is performed using indices called active power performance index (PIp) and voltage performance index (PIv). These indices provide a direct means of comparing the relative severity of the different line outages on the system loads and voltage profiles. Accordingly, it is found that the most severe line outages are those lines that interconnect the high load centered (Addis Ababa and Central regions) with the rest of the regional power systems. In addition, the most vulnerable buses of the network in respect of voltage limit violations are mainly found at the high load centers.
  • 摘要：Global Energy Interconnection(hereafter GEI) is not only connectivity of power grid, but also a series of methodical innovations for energy transition towards sustainable and resilient societies,which is different from the traditional energy development mode in the past. This paper seeks to summarize the key features about the abovementioned innovations, as Green & Clean, Balanced & Reciprocal, Efficient & Intelligent and Vitality & Business opportunity. Finally it puts forward some reflections on the future development of GEI based on ASEAN practice cases.
  • 摘要：HVDC transfer switches are used in different locations in electrode lines of HVDC transmission systems for their reconfigurations. They have to carry and commutate currents to the overload currents of HVDC transmission systems,which increased to 6,400 A in the past years. Common designs of transfer switches use combinations of several switching units connected in series and parallel. This paper describes the design and development of a new DC commutation switch with two switching units only, but it is able to carry currents up to 10,000 A and has an actual tested commutation capability of 6,500 A.
  • 摘要：Construction of Global Energy Interconnection (GEI) is regarded as an effective way to utilize clean energy and it has been a hot research topic in recent years. As one of the enabling technologies for GEI, big data is accompanied with the sharing, fusion and comprehensive application of energy related data all over the world. The paper analyzes the technology innovation direction of GEI and the advantages of big data technologies in supporting GEI development, and then gives some typical application scenarios to illustrate the application value of big data. Finally, the architecture for applying random matrix theory in GEI is presented.
  • 摘要：The scenarios of a half wavelength transmission line (HWTL) connected to the original DC asynchronous interconnection system are established based on the quasi-steady state model of HWTL, which include single or double loops of single channel and multi-channel scenarios with different starting and landing points. Firstly, the steady state power flow characters of multi-scenario transmission schemes are studied. The voltage distribution characters of HWTL are analyzed when its transmission power and power factor vary, and the influence of the DC power variation on voltage of HWTL is discussed. Then the transient characters of HWDHTS are explored. The DC commutation failure caused by the fault of HWTL is simulated and the power transfer capacity of HWTL while DC blocking is calculated in this paper.
  • 摘要：Wide area measurement system (WAMS),which is based on synchronization data from phasor measurement units (PMU) and EMS SCADA,is implemented to establish a system model that can handle certain functions such as real-time power system monitoring,oscillation mode analysis,accident analysis and decision-making assistance for emergency control.The Brazilian Interconnected Power System (BIPS) is a large system covering an extensive geographical region,which faces certain risks and challenges.It has several main transmission corridors associated with large power plants and interconnection between the northern and southeastern regions.Mismatch between the energy base and load pool also exists in Brazil as energy resources are not well-distributed;therefore,the use of large-capacity,long-distance transmission technique to transmit remote power is unescapable.On the other hand,there are many types of voltage levels and multiple entangled electromagnetic loops owing to historical reasons.Then,for insufficient power reservation and defective grid body in load pools,once the external power is cut,it's easy to raise a blackout.The infrastructure is old and the power system operates close to the upper limit.All these represent risks and challenges to BIPS.Through WAMS technology research method in this project,the electrical power system function of monitoring,analysis,and control improved from the static state to the dynamic state.WAMS enhances data integration and real-time analysis capabilities,and can provide dispatchers with high quality real-time dynamic information and decision-making support information,enhance monitoring of auxiliary services in the electricity market,enable operators to improve the accuracy of power network analysis,thereby increasing power grid monitoring and operation,and improve the transmission capacity and reliability of the power grid operation [1].
  • 摘要：The development of interstate electric ties ISETs and grids (ISGs) is a global process;recently,countries of Northeast Asia (NEA) that were previously very poorly connected have started to study the possibility of constructing ISETs and ISGs.This paper describes the current state of the interstate transmissions in the NEA region,considering the prospective projects of ISETs in NEA.The results of the system optimization study on prospective NEA ISGs are provided.The proposals on the development of electric power cooperation in NEA are formulated.
  • 摘要：In a power system,power generation and load have frequency response characteristics,which randomly fluctuate with changes in operating status.This study investigates a probabilistic power flow method that considers the unit and load uncertainty of the static frequency characteristic.Firstly,a calculation model is established on the basis of the characteristics of the frequency modulation performance of the unit and load.Then a calculation method is developed using the concept of dynamic power flow in order to determine the probability distribution of the active power flow of each line under the occurrence of a fault in the system.In the method,Monte Carlo sampling with the semi-invariant method is applied for analysis and calculation.The IEEE-30-buses system is taken as an example to analyze the impact of different responses of units on the power flow distribution of various branches.The method discussed herein is compared with the Monte Carlo simulation method to verify its effectiveness.
  • 摘要：This study investigated the feasibility of distance protection in extra-high voltage (EHV) networks.In long-distance transmission lines,the distributed parameter characteristic of the EHV network is obvious.When a fault occurs far away from the measurement site,the measured impedance might not be directly proportional to the fault distance,and the protection domain of distance protection will be decreased.The detailed theory inferred and proven in this paper reveals that this phenomenon is widespread in EHV transmission lines.The results indicate that the protection domain error is greatly reduced by the application of the shunt reactor.Overall,simulation results show that the proposed method is effective for impedance relay,considering different characteristics,different lengths of lines,and compensation degrees.
  • 摘要：With the development of information technology,the amount of power grid topology data has gradually increased.Therefore,accurate querying of this data has become particularly important.Several researchers have chosen different indexing methods in the filtering stage to obtain more optimized query results because currently there is no uniform and efficient indexing mechanism that achieves good query results.In the traditional algorithm,the hash table for index storage is prone to "collision" problems,which decrease the index construction efficiency.Aiming at the problem of quick index entry,based on the construction of frequent subgraph indexes,a method of serialized storage optimization based on multiple hash tables is proposed.This method mainly uses the exploration sequence to make the keywords evenly distributed;it avoids conflicts of the stored procedure and performs a quick search of the index.The proposed algorithm mainly adopts the "filterverify" mechanism;in the filtering stage,the index is first established offline,and then the frequent subgraphs are found using the "contains logic" rule to obtain the candidate set.Experimental results show that this method can reduce the time and scale of candidate set generation and improve query efficiency.
  • 摘要：As the proportion of renewable energy increases,the interaction between renewable energy devices and the grid continues to enhance.Therefore,the renewable energy dynamic test in a power system has become more and more important.Traditional dynamic simulation systems and digital-analog hybrid simulation systems are difficult to compromise on the economy,flexibility and accuracy.A multi-time scale test system of doubly fed induction generator based on FPGA+ CPU heterogeneous calculation is proposed in this paper.The proposed test system is based on the ADPSS simulation platform.The power circuit part of the test system is setup up using the EMT (electromagnetic transient simulation) simulation,and the control part uses the actual physical devices.In order to realize the close-loop testing for the physical devices,the power circuit must be simulated in real-time.This paper proposes a multi-time scale simulation algorithm,in which the decoupling component divides the power circuit into a large time scale system and a small time scale system in order to reduce computing effort.This paper also proposes the FPGA+CPU heterogeneous computing architecture for implementing this multi-time scale simulation.In FPGA,there is a complete small time-scale EMT engine,which support the flexibly circuit modeling with any topology.Finally,the test system is connected to an DFIG controller based on Labview to verify the feasibility of the test system.
  • 摘要：Recently,with increasing improvements in the penetration of wind power and photovoltaic power in the world,probabilistic small signal stability analysis (PSSSA) of a power system consisting of multiple types of renewable energy has become a key problem.To address this problem,this study proposes a probabilistic collocation method (PCM)-based PSSSA for a power system consisting of wind farms and photovoltaic farms.Compared with the conventional Monte Carlo method,the proposed method meets the accuracy and precision requirements and greatly reduces the computation;therefore,it is suitable for the PSSSA of this power system.Case studies are conducted based on a 4-machine 2-area and New England systems,respectively.The simulation results show that,by reducing synchronous generator output to improve the penetration of renewable energy,the probabilistic small signal stability (PSSS) of the system is enhanced.Conversely,by removing part of the synchronous generators to improve the penetration of renewable energy,the PSSS of the system may be either enhanced or deteriorated.

    全球能源互联网（英文版）的期刊信息

    • 曾用名：
    • 创刊时间：
    • 地区：
    • 语言：中文
    • 热门主题：
    • 学科分类：

    全球能源互联网（英文版）的获奖情况

    全球能源互联网（英文版）的收录情况

    全球能源互联网（英文版）的投稿信息

    • 投稿方式：
    • 投稿须知：点击查看
    • 期刊官方网站：点击前往
    • 版面费：
    • 审稿费：元
    • 通讯地址：
    • 邮编：100052
    • 联系电话：86-10-63411498
    • 邮箱：geijournal@geidco.org
    • 期刊栏目：
    免费订阅本刊

    客服邮箱：kefu@zhangqiaokeyan.com

    京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有 出版物经营许可证

    • 客服微信

    • 服务号