Table of Content

    20 December 2017
    Volume 47 Issue 6
    Bi-stage optimization method for receiving-end ultra-high voltage network planning under global energy interconnection
    LIU Xiaoming, XU Naiyuan, YANG Bin, WEI Xin, ZHANG Lina, CAO Yongji
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  1-6.  doi:10.6040/j.issn.1672-3961.0.2017.541
    Abstract ( 1064 )   PDF (495KB) ( 280 )   Save
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    The ultra-high voltage(UHV)grid serves as a critical support technology of the global energy interconnection, of which network configuration may seriously impact the security and economical efficiency of global energy. Taking into account the layout of UHV receiving point and regulation of receiving-end network structure simultaneously, a bi-stage optimization approach was proposed to deal with the problem of receiving-end UHV network planning. In the first stage, a tri-objective optimization model(TOOM)of the UHV receiving point planning was established to maximize the strength of receiving-end system and the static voltage stability, and minimize the active transmission power loss. Then, the normalization and scalarization methods were implemented to solve the TOOM. In the second stage, the short circuit current level and cost-performance ratio were utilized as indices and the network structure was regulated based on the BPA software to ensure the safe and reliable operation. Shandong power grid was taken as a case study and the results validated the effectiveness of proposed approach.
    Nodal load forecasting method considering spatial correlation and redundancy
    HAN Xueshan, WANG Junxiong, SUN Donglei, LI Wenbo, ZHANG Xinyi, WEI Zhiqing
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  7-12.  doi:10.6040/j.issn.1672-3961.0.2017.530
    Abstract ( 975 )   PDF (712KB) ( 460 )   Save
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    Aiming at the problem that existing nodal load forecasting methods had no effective use for the nodes spatial correlation information, a new nodal load forecasting method with estimated correction characteristic was proposed, which had considered spatial correlation and redundancy. The correlation between the time dimension and the spatial dimension of the measurement information, and the spatial correlation and redundancy characteristics which combined these two dimensions were analyzed, and the mutual correction prediction principle was given. Two spatial correlations between state and measured values were analyzed deeply to establish measuring equations, which could characterise state features indirectly on the spatial correlation topology. Based on the analysis results, the forecasting model was established, and the forecasting method in which pre-prediction model was support vector machine was given, and advantages of the forecasting method were elaborated. Case studies demonstrated that compared with SVM model, the proposed 山 东 大 学 学 报 (工 学 版)第47卷 - 第6期韩学山,等:计及空间关联冗余的节点负荷预测方法 \=-method could effectively decrease forecasting errors and improve forecasting results.
    Construction of index system for relay protection operation evaluation based on KPI
    ZHENG Maoran, YU Jiang, CHEN Hongshan, ZHANG Shiyu, CHENG Haoyuan, GAO Honghui, ZHANG Jingwei
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  13-19.  doi:10.6040/j.issn.1672-3961.0.2017.225
    Abstract ( 1554 )   PDF (710KB) ( 342 )   Save
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    A method to construct the evaluation index system of relay protection operation based on KPI was proposed and the index system from three layers was illustrated. According to 20-80 rules and the balanced score card method in KPI theory, the composition of the strategic indicators was clarified and the strategic index set was established after analyzing the relationship between the relay protection business and other related business of power grid. The strategic index decomposition method based on the fishbone map was established and tactical sub-indicators was formed through the dimension division, classification design and index integration constructing tactical indicators set. Strategic indicators set and tactical indicators set were closely integrated in the form of index chain. The relay protection operation evaluation index system consist of multi-layer, multi-level and multi-dimension was finished.
    Robust optimal dispatch of active distribution networks based on centralized information system
    CHU Xiaodong, TANG Maosen, GAO Xu, LIU Weisheng, JIA Shanjie, LI Sun
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  20-25.  doi:10.6040/j.issn.1672-3961.0.2017.505
    Abstract ( 861 )   PDF (836KB) ( 345 )   Save
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    To be adpaptable to the evolving role of distribution power networks from the passive power consumption to active power supply, a robust optimal scheduling strategy was proposed for active distribution networks based on centralized information system. The AC power flow model was used to describe the power balance of a distribution network accounting for the impact of adjustment of the reactive power injection. A two-stage joint energy and reserve scheduling model was built. The uncertainty set of the renewable power outputs was constructed by using the roboust optimization technique. The optimization problem of high dimension and nonconvexity was transformed into convex problem to ensure the optimal solution performance. Simulation results of a test system showed that a substantial increase of flexibility was achieved through the optimal dispatch of various resources. The proposed robust optimal schedule strategy could enhance the capability of active distribution networks to integrate intermittent renewable generation.
    Interval optimization method for reference network adaptable to the uncertainties of power sources and electric loads
    SUN Donglei, LI Shan, LI Xueliang, HAN Xueshan, LI Wenbo, YANG Si
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  26-31.  doi:10.6040/j.issn.1672-3961.0.2017.538
    Abstract ( 1094 )   PDF (658KB) ( 278 )   Save
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    Aimed at the shortage of the existing reference network models that rarely take the uncertainties of power sources and electric loads as well as the operation strategies of responding uncertainties into consideration, an interval optimization method for reference network adaptable to the uncertainties of power sources and electric loads was proposed to provide theoretical guidance for flexible electric network planning. Based on the forecasted interval level of uncertain power sources and electric loads in the planning period and candidate schemes in network planning strategy, a novel interval optimization model for reference network was built to minimize the total generation cost, reserve allocation cost and transmission investment cost, in which the security region constraints under all operating modes should be respected. The solution method was given for the proposed model to get the optimal planning scheme for electric network. Finally, case studies were conducted to demonstrate the effectiveness of the proposed method.
    Economic dispatch of microgrid under two-level market operating environment
    WANG Shibo, DU Heng, WU Yong, LIU Hongzheng, CHENG Yan
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  32-38.  doi:10.6040/j.issn.1672-3961.0.2017.399
    Abstract ( 1449 )   PDF (990KB) ( 351 )   Save
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    To resolve the contradiction and deviation produced by microgrids isolation decision between day-ahead market and real-time market, energy exchanges between power market and microgrid control system of two different time scales were considered. An economic dispatching model of microgrid under two-level market operating environment was proposed to make concerted decision. Simultaneously, control means of demand side response influences were introduced to decision making process to provide beneficial references for the ancillary service of microgrids coping with uncertainties. The correctness and effectiveness were verified by simulations on a typical microgrid.
    Online voltage security assessment of distribution network based on WAMS Light
    WANG Hui, CHEN Lizheng, ZHOU Gang, LIU Bochen, YU Yang, LIU Gang, FENG Zhongkui, JIN Zongshuai
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  39-45.  doi:10.6040/j.issn.1672-3961.0.2017.089
    Abstract ( 1042 )   PDF (1369KB) ( 261 )   Save
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    With the increasing permeability of wind, photovoltaic and other intermittent power source, distribution network operation characteristics were becoming more complicated, especially in the low-voltage distribution side, the fluctuation of power output and load was more likely to cause the deviation of power grid states. A quantitative requirement of voltage security was analyzed, and an improved voltage security margin assessment method was proposed based on the binary table of voltage security contrains. The accumulation effect of voltage offsets in the evaluation window was considered, which combined the degree and duration of voltage offsets. The method was verified with the IEEE 39-bus system and actual data recorded by WAMS Light, the results showed that the proposed voltage security margin index was of good linearity and smoothness. The online assessment of voltage security was deployed with the applications of WAMS Light.
    Application of digital close-range photogrammetry in the deformation observation of check gate
    ZHANG Guojian, YU Chengxin, GUO Guangli
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  46-51.  doi:10.6040/j.issn.1672-3961.0.2016.479
    Abstract ( 928 )   PDF (2024KB) ( 257 )   Save
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    The digital photography technology was used to complete the transient deformation observation of the check gate during gate lift to grasp the whole information of check gate in time and provide data support for evaluating check gate. The external data acquisition equipment—the digital camera was used to take a picture as a zero photo before the gate rising. Photos were taken as subsequent photos in the process of gate lift. The changed pixel value of the same name point was obtained by comparing the subsequent photos with the zero photo. Based on baseline data of the reference point, the actual displacement value was obtained by using the spatial time baseline parallax method, and deformation trend diagram was drawn. Results showed that the relative measurement accuracy of digital photography was 3/1 000, which could meet the requirements of deformation monitoring. According to deformation trend diagram, each deformation point moved consistently with each other, and no local instability occurred. Hongyuan check gate was within elastic deformation. The maximum deformation was less than 5.5 mm, the deformation was within safe levels. This study was a ful supplement for the current real-time safety monitoring of hydraulic engineering structure, which could promote the development of safety monitoring of engineering structure in the future.
    Short-term power load forecasting based on support vector regression
    LI Sun, WANG Chao, ZHANG Guilin, XU Zhigen, CHENG Tao, WANG Yiyuan, WANG Ruiqi
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  52-56.  doi:10.6040/j.issn.1672-3961.0.2017.376
    Abstract ( 1047 )   PDF (727KB) ( 278 )   Save
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    The characters of short term load were studied and the influence factors of daily load in summer and winter was analysed. The meteorological factors, such as date type and pevious load, were selected as the input of maximum incremental load forecasting regression model. The value corresponding to date type was modified based on meteorological factor due to the inconsistent load characteristic in different seasons. The least squares support vector machine(LS-SVM)was utilized to model mapping relationship between input factors and maximum incremental load. Numerical tests demonstrated the efficiency of the proposed method.
    Load optimization model of smart home management system based on adaptive particle swarm optimization
    MA Hanjie, LIN Xia, XU Xiaohui, ZHANG Jian, ZHANG Zhisheng
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  57-62.  doi:10.6040/j.issn.1672-3961.0.2017.533
    Abstract ( 990 )   PDF (1550KB) ( 238 )   Save
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    In the situation of the development of Energy Internet, the basic structure of smart home management system(SHMS)was designed, the intelligent house management system load optimization model was constructed, which met the demand response strategy for power grid and the user's requirement to save the electricity cost. Particle swarm optimization(PSO)algorithm for introducing attenuation factors was used to solve the model, which got the program to meet the needs of users. The simulation results were based on the actual time-sharing price, outdoor temperature and load parameters. After the simulation, the user load curve was improved and the electricity consumption and energy used were obviously reduced, which proved the algorithm was effective.
    Simulation and analysis of two dimensional temperature field of the discrete cooling system transformer based on the finite element method
    WEI Bengang, GUO Ruochen, HUANG Hua, WANG Zhen, LIU Pengcheng, ZHANG Yuying, LI Kejun, LOU Jie
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  63-69.  doi:10.6040/j.issn.1672-3961.0.2017.570
    Abstract ( 1114 )   PDF (2728KB) ( 282 )   Save
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    Discrete cooling transformers were mainly applied when building underground substations in urban cities, but there was little research about the heat radiation of discrete cooling transformers. The finite element method was used to simulate the temperature field of discrete transformer, and 2D model was established in FLUENT.The temperature field data from simulation were compared with filed measured ones to testify the validity of the 2D model. The influence of environment temperature and pipe wall thickness was analyzed to provide references to optimum structure.
    Soft-start control strategy of induction motor based on space voltage vector
    ZHANG Weijiang, DANG Hongshe
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  70-76.  doi:10.6040/j.issn.1672-3961.0.2017.383
    Abstract ( 1218 )   PDF (2357KB) ( 264 )   Save
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    According to the theory of space voltage vector and its control idea, a control strategy which could improve the starting torque of induction motor was proposed based on the thyristor soft starter-induction motor system. By achieving the three-phase stator voltage in the thyristors controlled voltage space vector transform, an effective control of the rotor flux and electromagnetic torque was formed. The structure of the main circuit of the traditional soft starter was kept unchanged in this strategy, in order to determine the initial trigger angle easily and quickly. The Laplace transform of stator current under the effect of vector voltage was solved and analyzed by building up the mathematical model of order reduction based on αβ0 coordinate. To achieve the aim that induction motor acceleration could start smoothly, space voltage vector and zero voltage vector control had been achieved by means of controlling the trigger angle of the silcon controlled rectifier(SCR). The control strategy could improve the induction motor starting electromagnetic torque and effectively reduce the starting current significantly, and the results were validated by simulation and system experiment.
    Scheme analysis on GW-scale coastal mud flat PV system connected to power grid
    CONG Yini, CAO Zenggong, MU Hong, WANG Chunyi, LIU Yutian
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  77-82.  doi:10.6040/j.issn.1672-3961.0.2016.492
    Abstract ( 1156 )   PDF (1199KB) ( 314 )   Save
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    In order to reduce the effect of connecting GW-scale coastal mud flat photovoltaic(PV)system to the power grid and to ensure the secure, stable as well as economical operation of the power grid, different connection schemes of connecting GW-scale coastal mud flat PV system to the power grid were analyzed. It was proposed that GW-scale coastal mud flat PV system was divided into two parts, which were electrically independent but correlative, and they were connected to the 220 kV sides of two nearby substations. The fundamental principle of connecting GW-scale PV system to the power grid was proposed. It not only satisfied the requirement of connecting large-scale PV system to the power grid, but also ensured the secure and stable operation of the power grid. The case study of Shandong power grid verified the feasibility of the proposed connection scheme in aspects of the load flow distribution, static security and transient stability.
    Prediction model of concentrating solar power technology maturity
    XIE Guohui, FAN Hao
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  83-88.  doi:10.6040/j.issn.1672-3961.0.2016.480
    Abstract ( 1234 )   PDF (737KB) ( 284 )   Save
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    Judging concentrating solar power(CSP)technology trend could provide critical reference for global energy interconnection(GEI)planning and construction. The technology maturity prediction model of CSP based on S-shaped growth curve was established, and the CSP patent information was collected and the model parameters regression analysis was made in order to predict the technical maturity of CSP in the future. The impact on CSP technology trend from policy driven and capital investment was studied. The results showed that the current maturity of CSP was much lower, which was still in the early technology development stages. CSP technology maturity would reach a high degree by 2032, entering extensive commercial application stage. Large-scale CSP stations which were built in North Africa, South East and West coast of the Latin America, western China and other regions, would play an important role in supporting the construction of GEI.
    Rolling optimal dispatch method of wind power based on distributed energy storage system
    WANG Fei, XU Jian, LI Wei, WANG Xinhao, SHI Xiaohan
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  89-94.  doi:10.6040/j.issn.1672-3961.0.2017.208
    Abstract ( 1213 )   PDF (751KB) ( 285 )   Save
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    According to the inherent characteristics of wind power that forecased accuracy increasing with the time-scale decreasing, a multi-time scale and multi-objective coordinated rolling optimal dispatch model was established. Based on the wind power grid-connected standards and combined with distributed battery energy storage system(DBESS), the low-frequency fluctuation of wind power could be damped in time. An optimized model was established with objectives of minimizing the economy of the system and the curtailed wind power. The IEEE 39-bus system with four wind farms and two battery energy storage systems(BESSs)was added for utilizing to verify the optimization dispatch model proposed, and it was solved by genetic algorithm(GA)iteratively. The results showed that the proposed wind-storage rolling optimal dispatch model based on DBESS could reduce the cost of the system operation and increase the amount of wind power griding effectively.
    SOC optimization on power supply reliability of wind-storage system
    ZHANG Qisong, FU Jun, SHI Zhaohui, YANG Xiao, JIA Chunjuan, HUANG Yulong
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  95-99.  doi:10.6040/j.issn.1672-3961.0.2017.163
    Abstract ( 1050 )   PDF (824KB) ( 248 )   Save
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    In order to solve the problem of storage capacity and charging & discharging control optimization in the wind-storage system, the power supply reliability and power fluctuation of system were studied. To prevent the overshoot discharge phenomenon of energy storage system, a consideration energy storage state of charge(SOC)optimization control strategy of charge and discharge was put forward. The fuzzy control method was adopted, according to the energy storage SOC, and the coefficient was introduced to adjust the charge and discharge power. Based on IEEE-RTS79 reliability test system, through the analysis of a real wind field data, the study verified that the strategy could effectively improve the power supply reliability and the power fluctuation of the system.
    Availability analysis of wind turbine based on IEC information classification and research on the improvement method
    XIN Yan, LI Jingcai, REN Danyuan, ZHOU Minqiang
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  100-107.  doi:10.6040/j.issn.1672-3961.0.2017.013
    Abstract ( 1068 )   PDF (3057KB) ( 307 )   Save
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    To avoid the availability difference between calculated value and actual value, status codes of main control system were divided into different parts according to their available properties, based on the standard IEC61400-26-1. The statistics of wind turbine downtime was based on timestamp method. The calculation method of availability was improved by taking account of the interests of owners and manufacturers, and the overall trend of the results was consistent with the SCADA Report. By counting the time and times of the status codes of the low availability unit, the improvement method could find the main reason of low availability in wind turbine and give advice to improve wind turbine availability by updating main control program. The results showed that the wind turbine availability could be increased by 2.2%, according with actual results through proposed method.
    Optimization dispatch control strategy for charging load of large-scale electric vehicle on demand side
    CHE Changming, ZHANG Huadong, LI Jianxiang, YUAN Hong, LIU Haibo
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  108-114.  doi:10.6040/j.issn.1672-3961.0.2017.331
    Abstract ( 1184 )   PDF (1189KB) ( 337 )   Save
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    In view of the uncertainty of the charging behavior of electric vehicle(EV)users, the electric vehicle charging schedule and control technology were analyzed, a model of regulation and optimization for electric vehicle charging load was built, a stratified multi-objective electric vehicle charging strategy considering time-of-use electricity price and peak load shifting was proposed, and a simulation experiment for scheduling control was implemented in charging scenario for 1 000 electric vehicles in a certain area. The results showed that the optimized charging strategy proposed in this study could effectively reduce the charging cost and charging power peak, and verify the effectiveness of the optimization strategy.
    Location and resource allocation of emergency charging station for expressway electric vehicle
    XU Wei, JI Xiaotong, LIU Haibo, HAN Yuankai, CHEN Fang, ZHANG Chenglin
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  115-120.  doi:10.6040/j.issn.1672-3961.0.2017.528
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    The fault of charging facilities and vehicle charging unit led to the paralysis of electric vehicles, which could causes traffic congestion and threatens highway safety. In view of these problems, the strategy of setting up emergency charging rescue stations on the highway was put forward, which used mobile charging for the rescue of malfunctioned charging station or vehicles. The reliability, economical efficiency and the minimum time principle of rescue station site selection were determined, and the basic functions of emergency charging rescue station were investigated. The site selection scheme was sought to minimize the sum of construction and operating costs under the premise of guaranteeing the maximum allowable rescue time. The number of charging cars was determined according to the fault probability of charging stations. The feasibility of the model for site selection and size was proved by a road network containing eight charging stations and twelve selectable sites for rescue stations. The model met the economic principle by saving costs under the premise of guaranteeing rescue time.
    An overview of emergency charging rescue scheme for electric vehicle on highway
    LI Jianxiang, CHE Changming, HAN Yuankai, CHEN Fang, ZHANG Chenglin
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  121-127.  doi:10.6040/j.issn.1672-3961.0.2017.532
    Abstract ( 1704 )   PDF (983KB) ( 286 )   Save
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    The electric vehicle emergency charging rescue scheme was explored by analyzing the charging device, system function, rescue station location and resource allocation. By comparing the advantages and disadvantages of various types of emergency rescue devices for electric vehicles, the internal structure of the emergency charging system and the function of each component were determined. Several common models for emergency rescue station site selection were analyzed to summarize the related constraints of site selection models. And several emergency resource allocation methods were further elaborated. This work could provide a useful reference for the in-depth research on the construction and operation of emergency rescue stations for electric vehicles on highways.
    Optimal allocation of global energy based on minimum deviation method
    ZHANG Hengxu, HAN Linxiao, SHI Fang
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  128-133.  doi:10.6040/j.issn.1672-3961.0.2017.579
    Abstract ( 1171 )   PDF (1422KB) ( 934 )   Save
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    Global energy interconnection dedicated to form a new pattern of world energy development in which clean energy plays dominating role, the electric power was the center and the energy resources are optimally allocated worldwide. It will become the strong support to achieve sustainable development of society and economy in the future. To study the energy allocation in the background of global energy interconnection, a multi-objective optimization model was established. In this model, minimizing energy cost and minimizing transmission loss were objectives. Restrictions included energy supply, energy demand and capacity of transmission system. In order to reduce the influence of subjectivity on multi-objective optimization, the model was transformed into single-objective optimization model based on minimum deviation method and solved by GAMS software. The case study showed that electricity replacement could effectively reduce total energy cost. Based on this, the optimal allocation scheme of global energy under transcontinental grids was compared and analyzed, and its sensitivity on environmental benefits was discussed.
    Operating mechanism establishment of the global energy interconnection under “the Belt and Road Initiative” situation
    LI Haishi, XU Xiangyi, ZHANG Lei
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  134-142.  doi:10.6040/j.issn.1672-3961.0.2017.539
    Abstract ( 1178 )   PDF (643KB) ( 400 )   Save
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    With the vigorous development of clean energy and the maturing of smart grid technology, UHV technology could solve the scheduling problem of ultra-long-distance transmission of electronic power. The global energy interconnection has become a major issue urgently needed to be solved at this stage of globalization. It was also an important strategic plan for achieving sustainable global economic and energy development. Global energy interconnection requires all countries in the world to cooperate in all aspects of energy and open energy access among countries with different development levels so as to bring together resources and energy-based enterprises from all over the world to form a set of mutually beneficial energy trading operation mechanisms. Together, countries may explore the business model applicable to the global energy interconnection to ensure the orderly development of the global energy Internet. “The Belt and Road Initiative” at this stage was analyzed, which is about global energy development status and the performance gained of global energy internet. The construction of new investment and financing mechanism, market mechanism, collaborative innovation mechanism and organizational guarantee mechanism in the process of global energy internet development were explored. In order to drive the coupling and interaction between “the Belt and Road Initiative” and the strategy of global energy internet establishment, the problems were put forth that would be encountered during the operation of global energy interconnection, and feasible scheme was proposed for the construction of global energy interconnection operation mechanism.
    Countermeasure and technology patent development of global energy interconnection
    ZHANG Xihua, LU Shanshan, SU Jianjun
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2017, 47(6):  143-150.  doi:10.6040/j.issn.1672-3961.0.2017.529
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    Combined with the data analysis result for four technical patents development of the global energy interconnection, which was also the main supporting technologies(power supply technology, power grid technology, energy storage technology, information and communication technology), the China model of technology patent development of global energy interconnection was proposed, which was used to construct the global technology patent development of global energy interconnection in “the Belt and Road Initiative”, on the basis of supporting technology, with the help of the dominant industries, relying on the advantages of leading enterprises and through the way of industry-university-research-government cooperation.