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Jing Shi
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, China

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Journal article
Published: 30 August 2021 in IEEE Transactions on Applied Superconductivity
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A simplified two-dimensional (2D) model, which takes the helical structure of the conductor on round core (CORC) cable into consideration, is utilized to analyze the electromagnetic and thermal properties of the cable. The model couples multi-physical fields through the JcBT(B,T) properties of the superconducting tape. We first introduced the modeling strategy and verified the validity of the 2D model. Then, considering the influence of thermal on the critical current of the tape, the cable loss under different conditions has been calculated. By changing the relative positions of the inner and outer conductor layers of the 2D model, the influence of the magnetic field on CORC cable loss can be obtained, and it can be extended to the periodic three-dimensional (3D) structure.

ACS Style

Xianhao Li; Li Ren; Ying Xu; Jiajie Long; Jing Shi; Guilun Chen; Yuejin Tang. Study on the Influence of Thermal and Magnetic Field on CORC Cable Properties by a 2D Model. IEEE Transactions on Applied Superconductivity 2021, PP, 1 -1.

AMA Style

Xianhao Li, Li Ren, Ying Xu, Jiajie Long, Jing Shi, Guilun Chen, Yuejin Tang. Study on the Influence of Thermal and Magnetic Field on CORC Cable Properties by a 2D Model. IEEE Transactions on Applied Superconductivity. 2021; PP (99):1-1.

Chicago/Turabian Style

Xianhao Li; Li Ren; Ying Xu; Jiajie Long; Jing Shi; Guilun Chen; Yuejin Tang. 2021. "Study on the Influence of Thermal and Magnetic Field on CORC Cable Properties by a 2D Model." IEEE Transactions on Applied Superconductivity PP, no. 99: 1-1.

Journal article
Published: 30 August 2021 in IEEE Transactions on Applied Superconductivity
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AbstractWith regard to the state-of-the-art technologies in the fields of applied superconductivity and electromagnetic devices, research and development highlights are presented. The recent progress and achievement described with principle and technical details include mainly i) applied superconducting materials; ii) superconducting magnets and their applications such as in ITER and Tokamaks; iii) high Tc superconducting (HTS) magnetic levitation and applications; iv) HTS smart grids; v) superconducting and electromagnetic material modelling and characteristics; vi) advanced electromagnetic devices. The applied superconductivity technology and availability are especially focused and verified with the trend of its development prospection.

ACS Style

Jian Xun Jin; Guang Sheng; Yanfang Bi; Yuntao Song; Xiaolong Liu; Xin Chen; Qiang Li; Zigang Deng; Weihua Zhang; Tim A Coombs; Boyang Shen; Jiamin Zhu; Yong Zhao; Jianhua Wang; Bin Xiang; Yuejin Tang; Li Ren; Ying Xu; Jing Shi; Rabiul Islam; Youguang Guo; Jianguo Zhu. Applied Superconductivity and Electromagnetic Devices - Principles and Current Exploration Highlights. IEEE Transactions on Applied Superconductivity 2021, PP, 1 -1.

AMA Style

Jian Xun Jin, Guang Sheng, Yanfang Bi, Yuntao Song, Xiaolong Liu, Xin Chen, Qiang Li, Zigang Deng, Weihua Zhang, Tim A Coombs, Boyang Shen, Jiamin Zhu, Yong Zhao, Jianhua Wang, Bin Xiang, Yuejin Tang, Li Ren, Ying Xu, Jing Shi, Rabiul Islam, Youguang Guo, Jianguo Zhu. Applied Superconductivity and Electromagnetic Devices - Principles and Current Exploration Highlights. IEEE Transactions on Applied Superconductivity. 2021; PP (99):1-1.

Chicago/Turabian Style

Jian Xun Jin; Guang Sheng; Yanfang Bi; Yuntao Song; Xiaolong Liu; Xin Chen; Qiang Li; Zigang Deng; Weihua Zhang; Tim A Coombs; Boyang Shen; Jiamin Zhu; Yong Zhao; Jianhua Wang; Bin Xiang; Yuejin Tang; Li Ren; Ying Xu; Jing Shi; Rabiul Islam; Youguang Guo; Jianguo Zhu. 2021. "Applied Superconductivity and Electromagnetic Devices - Principles and Current Exploration Highlights." IEEE Transactions on Applied Superconductivity PP, no. 99: 1-1.

Journal article
Published: 30 August 2021 in IEEE Transactions on Applied Superconductivity
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Compared with insulated superconducting magnet, no-insulation (NI) magnet has smaller volume and stronger overcurrent capability, and also has certain self-protection characteristics in quench situations. However, the existence of radial current complicates the transient stability analysis of NI magnets and the existing calculation methods are difficult to converge in multi-field coupling analysis. This paper introduces the two-dimensional analysis method into the transient thermal-magnetic analysis of no-insulation magnets, which improves the convergence of the calculation and convenient for Multiphysics analysis

ACS Style

Pu Duan; Li Ren; Xianhao Li; Ying Xu; Jingdong Li; Yuejin Tang; Jing Shi; Shuqiang Guo. Thermal and Electrical Analysis of No-insulation Magnet during Transient Process Based on 2D Finite Element Method. IEEE Transactions on Applied Superconductivity 2021, PP, 1 -1.

AMA Style

Pu Duan, Li Ren, Xianhao Li, Ying Xu, Jingdong Li, Yuejin Tang, Jing Shi, Shuqiang Guo. Thermal and Electrical Analysis of No-insulation Magnet during Transient Process Based on 2D Finite Element Method. IEEE Transactions on Applied Superconductivity. 2021; PP (99):1-1.

Chicago/Turabian Style

Pu Duan; Li Ren; Xianhao Li; Ying Xu; Jingdong Li; Yuejin Tang; Jing Shi; Shuqiang Guo. 2021. "Thermal and Electrical Analysis of No-insulation Magnet during Transient Process Based on 2D Finite Element Method." IEEE Transactions on Applied Superconductivity PP, no. 99: 1-1.

Journal article
Published: 30 August 2021 in IEEE Transactions on Applied Superconductivity
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The medium voltage direct current (MVDC) is a promising direction of future shipboard power system (SPS). However, one of the main limitations encountered in its development is the fault isolation of DC side. This paper reveals the evolution process of short-circuit fault in typical MVDC SPS through equivalent circuit and transient simulation. Based on the analysis of protection needs, a superconducting current-limiting switch (SCLS) topology is proposed, which includes one superconducting coupled coil and two DC circuit breakers (DCCBs). The models of SCLS is built on MATLAB/Simulink and the current limiting principle and current sharing principle of SCLS are verified. The results show that the SCLS has effective current limiting performance and fault clearing effect.

ACS Style

Zhenming Cai; Li Ren; Xiangyu Tan; Zheng Li; Ying Xu; Yuejin Tang; Jing Shi; Jingdong Li. Study of DC Superconducting Current-Limiting Switch in MVDC Shipboard Power System. IEEE Transactions on Applied Superconductivity 2021, PP, 1 -1.

AMA Style

Zhenming Cai, Li Ren, Xiangyu Tan, Zheng Li, Ying Xu, Yuejin Tang, Jing Shi, Jingdong Li. Study of DC Superconducting Current-Limiting Switch in MVDC Shipboard Power System. IEEE Transactions on Applied Superconductivity. 2021; PP (99):1-1.

Chicago/Turabian Style

Zhenming Cai; Li Ren; Xiangyu Tan; Zheng Li; Ying Xu; Yuejin Tang; Jing Shi; Jingdong Li. 2021. "Study of DC Superconducting Current-Limiting Switch in MVDC Shipboard Power System." IEEE Transactions on Applied Superconductivity PP, no. 99: 1-1.

Journal article
Published: 25 August 2021 in IEEE Transactions on Applied Superconductivity
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DC fault protection is the bottleneck that restricts the develop-ment of modular multilevel converter based high voltage direct current (MMC-HVDC) system. Superconducting fault current limiters (SFCL) is an ideal protection device that can significantly limit short circuit current and enhance the fault tolerance ability of MMC-HVDC system. At present,several topologies of SFCLs have been proposed,but there is no systematical study of their current-limiting characteristics in MMC-HVDC. This paper stud-ies the development process of DC short-circuit faults in MMC-HVDC system,and analyzes its demand for fault current limiting. Then,resistive type,saturated iron core type and hybrid type SFCL are modeled and their limiting effect of critical fault current under DC pole-to-pole fault is tested. By comparison,the current-limiting characteristics of three types of SFCL are concluded. Re-sults show that resistive SFCL has best performance in steady state,while saturated iron core SFCL has best performance in transient state. The current-limiting characteristic of hybrid type SFCL is between the other two types.

ACS Style

Xiangyu Tan; Li Ren; Yuejin Tang; Jingdong Li; Jing Shi; Ying Xu; Chao Sheng; Leishi Xiao. Comparative Analysis of Three Types of SFCL Considering Current-Limiting Requirement of MMC-HVDC System. IEEE Transactions on Applied Superconductivity 2021, PP, 1 -1.

AMA Style

Xiangyu Tan, Li Ren, Yuejin Tang, Jingdong Li, Jing Shi, Ying Xu, Chao Sheng, Leishi Xiao. Comparative Analysis of Three Types of SFCL Considering Current-Limiting Requirement of MMC-HVDC System. IEEE Transactions on Applied Superconductivity. 2021; PP (99):1-1.

Chicago/Turabian Style

Xiangyu Tan; Li Ren; Yuejin Tang; Jingdong Li; Jing Shi; Ying Xu; Chao Sheng; Leishi Xiao. 2021. "Comparative Analysis of Three Types of SFCL Considering Current-Limiting Requirement of MMC-HVDC System." IEEE Transactions on Applied Superconductivity PP, no. 99: 1-1.

Journal article
Published: 19 August 2021 in IEEE Transactions on Applied Superconductivity
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Corrects the complete affiliation of Shuqiang Guo, Li Ren, Ying Xu, Jing Shi, Guilun Chen, Zheng Li, Yuejin Tang, and Jingdong Li from what was originally given in the above-named article (ibid., vol. 31, no. 2, Mar. 2021, Art. no. 4600411).

ACS Style

Shuqiang Guo; Li Ren; Ying Xu; Yuanyuan Li; Jing Shi; Guilun Chen; Zheng Li; Yuejin Tang; Jingdong Li. Corrections to “Study on Energy Storage Magnet State Assessment Method Considering Temperature Rise”. IEEE Transactions on Applied Superconductivity 2021, 31, 1 -1.

AMA Style

Shuqiang Guo, Li Ren, Ying Xu, Yuanyuan Li, Jing Shi, Guilun Chen, Zheng Li, Yuejin Tang, Jingdong Li. Corrections to “Study on Energy Storage Magnet State Assessment Method Considering Temperature Rise”. IEEE Transactions on Applied Superconductivity. 2021; 31 (6):1-1.

Chicago/Turabian Style

Shuqiang Guo; Li Ren; Ying Xu; Yuanyuan Li; Jing Shi; Guilun Chen; Zheng Li; Yuejin Tang; Jingdong Li. 2021. "Corrections to “Study on Energy Storage Magnet State Assessment Method Considering Temperature Rise”." IEEE Transactions on Applied Superconductivity 31, no. 6: 1-1.

Journal article
Published: 04 August 2021 in IEEE Transactions on Applied Superconductivity
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The development of power system has increased the level of short-circuit fault current, and flux-coupling-type superconducting fault current limiter can effectively limit short-circuit current by the increased impedance after decoupling of windings. In this paper, two prototypes of pancake-winding and layer-winding were manufactured and experiments were conducted. The results show that the current-limiting ratio of two prototypes reached more than 40%. Analysis of the control strategy indicates that two breakers of the limiter could operate at the same time or at different times, and when two breakers operated asynchronously, there would be a damping direct current in the windings. When decoupled, two prototypes had coil voltage distributions of increase and then fall off, and pancake-winding had a intercoil voltage distribution of sawtooth.

ACS Style

Zhiwei Cao; SiNian Yan; Li Ren; Ying Xu; Yuejin Tang; Jing Shi; Jingdong Li. Experimental Analysis of Flux-Coupling-Type Superconducting Fault Current Limiter Prototypes. IEEE Transactions on Applied Superconductivity 2021, 31, 1 -5.

AMA Style

Zhiwei Cao, SiNian Yan, Li Ren, Ying Xu, Yuejin Tang, Jing Shi, Jingdong Li. Experimental Analysis of Flux-Coupling-Type Superconducting Fault Current Limiter Prototypes. IEEE Transactions on Applied Superconductivity. 2021; 31 (8):1-5.

Chicago/Turabian Style

Zhiwei Cao; SiNian Yan; Li Ren; Ying Xu; Yuejin Tang; Jing Shi; Jingdong Li. 2021. "Experimental Analysis of Flux-Coupling-Type Superconducting Fault Current Limiter Prototypes." IEEE Transactions on Applied Superconductivity 31, no. 8: 1-5.

Journal article
Published: 21 June 2021 in IEEE Transactions on Applied Superconductivity
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The high temperature superconducting (HTS) cable can be used as a low-voltage tie line between substations for its characteris-tic of high current density. In this way, the remaining capacity on the low-voltage side of the transformer can be fully utilized. Moreover, The HTS cable can run in parallel with the original tie line, forming an electromagnetic ring network, to ensure the power supply of important loads. However, the short circuit current of the distribution network is large, and the electromag-netic ring network operation results in the quench of HTS cable when the short circuit fault is outside the HTS cable. It is im-portant to ensure the safety of HTS cable under various short circuit faults. To ensure the safe operation of HTS cable in Shenzhen Power Grid, this paper built a distribution network model with HTS cable in Matlab/Simulink. The fault current and thermal process in different fault situation were analyzed. The design of fault current limiter (FCL) which is composed of the resistive superconducting fault current limiter (R-SFCL) and a shunt reactor was completed. The model of R-SFCL using R-Q method is build, and the effectiveness of the R-SFCL design is verified.

ACS Style

Hongyi Huang; Yuejin Tang; Li Ren; Jing Shi; Jingdong Li; Ying Xu; Zhe Zhang; Zhe Wang. Simplified Design of R-SFCL With Shunt Reactor for Protecting HTS Cable in Distribution Network. IEEE Transactions on Applied Superconductivity 2021, 31, 1 -5.

AMA Style

Hongyi Huang, Yuejin Tang, Li Ren, Jing Shi, Jingdong Li, Ying Xu, Zhe Zhang, Zhe Wang. Simplified Design of R-SFCL With Shunt Reactor for Protecting HTS Cable in Distribution Network. IEEE Transactions on Applied Superconductivity. 2021; 31 (8):1-5.

Chicago/Turabian Style

Hongyi Huang; Yuejin Tang; Li Ren; Jing Shi; Jingdong Li; Ying Xu; Zhe Zhang; Zhe Wang. 2021. "Simplified Design of R-SFCL With Shunt Reactor for Protecting HTS Cable in Distribution Network." IEEE Transactions on Applied Superconductivity 31, no. 8: 1-5.

Journal article
Published: 19 May 2021 in IEEE Transactions on Applied Superconductivity
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In the future, superconducting magnetic energy storage(SMES) technology will develop towards large capacity. Among them, a single magnet is expensive and technically challenging. The inte-gration of multiple SMES(M-SMES) is a feasible technical route. But there is coordination among multi-module energy storage magnets, so the formulation of its control strategy is very im-portant. In this paper, based on the toroidal magnet, a state evaluation method of toroidal magnet considering the withstand voltage and temperature of the magnet is proposed. To solve the problem of power distribution caused by the difference in initial capacity, initial temperature, and maximum output power dur-ing the cooperative control of multiple SMES, a temperature equilibrium control strategy(TECS) for energy storage magnets combined with state assessment is proposed. System simulation results showed that this strategy could effectively balance the working state of each module and maximize the power output capability of the energy storage magnet by ensuring the safety of the magnet.

ACS Style

Shuqiang Guo; Li Ren; Ying Xu; Yuan Yuan Li; Jing Shi; Guilun Chen; Zheng Li; Yuejin Tang; Jingdong Li. Research on M-SMES Temperature Equilibrium Control Strategies Considering State Assessment. IEEE Transactions on Applied Superconductivity 2021, 31, 1 -8.

AMA Style

Shuqiang Guo, Li Ren, Ying Xu, Yuan Yuan Li, Jing Shi, Guilun Chen, Zheng Li, Yuejin Tang, Jingdong Li. Research on M-SMES Temperature Equilibrium Control Strategies Considering State Assessment. IEEE Transactions on Applied Superconductivity. 2021; 31 (6):1-8.

Chicago/Turabian Style

Shuqiang Guo; Li Ren; Ying Xu; Yuan Yuan Li; Jing Shi; Guilun Chen; Zheng Li; Yuejin Tang; Jingdong Li. 2021. "Research on M-SMES Temperature Equilibrium Control Strategies Considering State Assessment." IEEE Transactions on Applied Superconductivity 31, no. 6: 1-8.

Journal article
Published: 02 April 2021 in IEEE Transactions on Applied Superconductivity
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Due to the low leakage magnetic field, the toroidal magnet has relatively small operating current and dynamic loss, and is suit-able for large-capacity energy storage applications. However, the insulation of the toroidal magnet is difficult, and the output power of a single SMES converter is limited. The modular toroi-dal energy storage magnet will provide a feasible idea for solving these problems. In this paper, a 3 MJ/2MW toroidal supercon-ducting magnet is designed, a modular design is carried out to reduce the insulation requirements, a slit structure of the cooling plate is designed to reduce the eddy current loss, the cooling pre-cess and loss of the magnet is analyzed.

ACS Style

Shuqiang Guo; Li Ren; Ying Xu; Jing Shi; Pu Duan; Guilun Chen; Zheng Li; Yuejin Tang; Jingdong Li. Modular Design of 3 MJ/2 MW Toroidal Magnet and Analysis of Dynamic Temperature Rise. IEEE Transactions on Applied Superconductivity 2021, 31, 1 -8.

AMA Style

Shuqiang Guo, Li Ren, Ying Xu, Jing Shi, Pu Duan, Guilun Chen, Zheng Li, Yuejin Tang, Jingdong Li. Modular Design of 3 MJ/2 MW Toroidal Magnet and Analysis of Dynamic Temperature Rise. IEEE Transactions on Applied Superconductivity. 2021; 31 (4):1-8.

Chicago/Turabian Style

Shuqiang Guo; Li Ren; Ying Xu; Jing Shi; Pu Duan; Guilun Chen; Zheng Li; Yuejin Tang; Jingdong Li. 2021. "Modular Design of 3 MJ/2 MW Toroidal Magnet and Analysis of Dynamic Temperature Rise." IEEE Transactions on Applied Superconductivity 31, no. 4: 1-8.

Journal article
Published: 23 March 2021 in IEEE Transactions on Applied Superconductivity
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The high-frequency PWM pulse voltage of SMES power condi-tioning system (PCS) transmitted to the HTS magnet will influ-ence the security of the magnet. Therefore, to analyze the dynam-ic response of the magnet with the interaction of the PWM pulse voltage is necessary for the SMES operation. This paper proposes a frequency-domain analysis method for the transient character-istic of the HTS magnet, which can be utilized to analyze the voltage distribution and the frequency response characteristic of the magnet. To evaluate the effectiveness of the proposed method, a sample HTS magnet is assembled to measure its voltage distri-bution characteristic. Furthermore, the results of amplitude-frequency characteristics coincide with the trend of magnet volt-age variation.

ACS Style

Jing Shi; Zitong Zhang; Meng Liao; Dengquan Lin; Shujian Li; Ying Xu; Zhaofang Song; Zexu Chen; Li Ren. Frequency-domain analysis and the effect on voltage distribution of the HTS SMES. IEEE Transactions on Applied Superconductivity 2021, PP, 1 -1.

AMA Style

Jing Shi, Zitong Zhang, Meng Liao, Dengquan Lin, Shujian Li, Ying Xu, Zhaofang Song, Zexu Chen, Li Ren. Frequency-domain analysis and the effect on voltage distribution of the HTS SMES. IEEE Transactions on Applied Superconductivity. 2021; PP (99):1-1.

Chicago/Turabian Style

Jing Shi; Zitong Zhang; Meng Liao; Dengquan Lin; Shujian Li; Ying Xu; Zhaofang Song; Zexu Chen; Li Ren. 2021. "Frequency-domain analysis and the effect on voltage distribution of the HTS SMES." IEEE Transactions on Applied Superconductivity PP, no. 99: 1-1.

Journal article
Published: 17 March 2021 in IEEE Transactions on Applied Superconductivity
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The performance degradation of High Temperature Superconducting (HTS) tape, which may be influenced by various heat exchange conditions due to different cooling methods, is of significant for HTS devices under repeated overcurrent. In this paper, considering different heat exchange conditions, a series of repeated overcurrent experiments were carried on YBCO tapes under 50Hz sinusoidal alternating current. The degradation of critical current of YBCO tapes after repeated overcurrent was recorded. the resistance characteristics of YBCO tapes under different cooling conditions were analyzed. Through finite element simulation, the temperature and current distribution of YBCO tape under different heat exchange conditions were simulated. The experimental results show that the overcurrent capability of the conductor under conduction cooling is far inferior to the liquid nitrogen immersion method.

ACS Style

Ying Xu; Zili Yang; Tangyao Feng; Xianhao Li; Jie Cheng; Guilun Chen; Pengfei Li; Li Ren; Jing Shi; Jingdong Li; Yuejin Tang. Analysis of overcurrent performance of YBCO tape considering different heat exchange conditions. IEEE Transactions on Applied Superconductivity 2021, PP, 1 -1.

AMA Style

Ying Xu, Zili Yang, Tangyao Feng, Xianhao Li, Jie Cheng, Guilun Chen, Pengfei Li, Li Ren, Jing Shi, Jingdong Li, Yuejin Tang. Analysis of overcurrent performance of YBCO tape considering different heat exchange conditions. IEEE Transactions on Applied Superconductivity. 2021; PP (99):1-1.

Chicago/Turabian Style

Ying Xu; Zili Yang; Tangyao Feng; Xianhao Li; Jie Cheng; Guilun Chen; Pengfei Li; Li Ren; Jing Shi; Jingdong Li; Yuejin Tang. 2021. "Analysis of overcurrent performance of YBCO tape considering different heat exchange conditions." IEEE Transactions on Applied Superconductivity PP, no. 99: 1-1.

Journal article
Published: 08 March 2021 in IEEE Transactions on Applied Superconductivity
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Superconducting coils may suffer from electromagnetic vibration due to changing electromagnetic fields under AC conditions. In the long term, this vibration may cause performance degradation of superconducting tapes. In order to study the influence of electromagnetic vibration between superconducting tapes on their performance, the study can be started from the simplest form of elec-tromagnetic vibration, that is, the electromagnetic vi-bration between two superconducting tapes. The degree of electromagnetic vibration under different AC cur-rents were analyzed by simulation, and the variation of critical current (Ic) and the n-value of Y-Ba-Cu-O (YBCO) tapes after undergoing long-term electromag-netic vibration through experiments were measured. The results show that two YBCO tapes does not show obvious performance degradation under tens of hours the elec-tromagnetic vibration caused by the AC current ampli-tude of 1.2 to 1.4 times Ic. Index TermsCritical current; electromagnetic vibration; the n-value; YBCO tape.

ACS Style

Tangyao Feng; Ying Xu; Zili Yang; Guilun Chen; Siyuan Liang; Li Ren; Jing Shi; Jingdong Li; Yuejin Tang. The Influence of Electromagnetic Vibration Caused by AC Current On the Performance of Y-Ba-Cu-O Tapes. IEEE Transactions on Applied Superconductivity 2021, 31, 1 -5.

AMA Style

Tangyao Feng, Ying Xu, Zili Yang, Guilun Chen, Siyuan Liang, Li Ren, Jing Shi, Jingdong Li, Yuejin Tang. The Influence of Electromagnetic Vibration Caused by AC Current On the Performance of Y-Ba-Cu-O Tapes. IEEE Transactions on Applied Superconductivity. 2021; 31 (5):1-5.

Chicago/Turabian Style

Tangyao Feng; Ying Xu; Zili Yang; Guilun Chen; Siyuan Liang; Li Ren; Jing Shi; Jingdong Li; Yuejin Tang. 2021. "The Influence of Electromagnetic Vibration Caused by AC Current On the Performance of Y-Ba-Cu-O Tapes." IEEE Transactions on Applied Superconductivity 31, no. 5: 1-5.

Journal article
Published: 23 February 2021 in IEEE Transactions on Applied Superconductivity
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High temperature superconducting (HTS) cables have advantages of low loss and large capacity transmission. In order to analyze and protect the HTS cable, especially in the transient process, this paper develops a new method to analyze the thermal properties. Based on the structure parameters and actual working conditions of three-phase coaxial (tri-axial) HTS cable assembled in Shenzhen, China, a two-dimensional (2-D) axisymmetric finite element simulation model along the axis was built in COMSOL. By coupling first and then decoupling, the temperature distribution was studied under the conditions of cooling, rated current, cryogenic system failure, local hot spot and short circuit fault. This method solves the problem that non-isothermal flow (nitf) is not easy to converge under transient conditions, and has the advantages of simple and accurate.

ACS Style

Xianhao Li; Li Ren; Ying Xu; Jing Shi; Xiaogang Chen; Guilun Chen; Hongyi Huang; Shuqiang Guo; Yuejin Tang. Simulation Analysis of 2D Finite Element Axial Transient Temperature Distribution of HTS Cable. IEEE Transactions on Applied Superconductivity 2021, 31, 1 -6.

AMA Style

Xianhao Li, Li Ren, Ying Xu, Jing Shi, Xiaogang Chen, Guilun Chen, Hongyi Huang, Shuqiang Guo, Yuejin Tang. Simulation Analysis of 2D Finite Element Axial Transient Temperature Distribution of HTS Cable. IEEE Transactions on Applied Superconductivity. 2021; 31 (5):1-6.

Chicago/Turabian Style

Xianhao Li; Li Ren; Ying Xu; Jing Shi; Xiaogang Chen; Guilun Chen; Hongyi Huang; Shuqiang Guo; Yuejin Tang. 2021. "Simulation Analysis of 2D Finite Element Axial Transient Temperature Distribution of HTS Cable." IEEE Transactions on Applied Superconductivity 31, no. 5: 1-6.

Special section
Published: 09 January 2021 in Environmental Progress & Sustainable Energy
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To meet the challenge of the “three highs and one limit” of the Shenzhen power grid operation, the virtual power plant (VPP) is proposed to effectively utilize the flexible distributed energy resources (DERs) to optimize the operation scheme of the distribution network. Firstly, based on the investigation of the available and controllable DERs of the Shenzhen power grid, typical application scenarios representing the characteristics of the Shenzhen power grid are formulated. Secondly, the framework and roadmap of the typical regional VPP in Shenzhen are proposed. Thirdly, a coordinated optimal scheduling strategy for the VPP is proposed to solve the voltage issues caused by overload or other reasons in Shenzhen's distribution network. Finally, a case study is carried out on the distribution networks using that of the Shenzhen Potevio New Energy company, Shenzhen Bay Science and Technology Eco‐Park are connected. The results show that the voltage level of the distribution network can be improved by the proposed optimal control strategy of the VPP, and verify the effectiveness of the proposed VPP scheme and the benefits of the VPP for the Shenzhen power grid operation.

ACS Style

Xinming Song; Yongsheng Deng; Fengshun Jiao; Jing Shi; Meng Cheng; Qianliang Xiang; Chengyan Yue; Zitong Zhang; Shujian Li; Hyoungmi Kim. Virtual power plant implementation scheme in Shenzhen city. Environmental Progress & Sustainable Energy 2021, 1 .

AMA Style

Xinming Song, Yongsheng Deng, Fengshun Jiao, Jing Shi, Meng Cheng, Qianliang Xiang, Chengyan Yue, Zitong Zhang, Shujian Li, Hyoungmi Kim. Virtual power plant implementation scheme in Shenzhen city. Environmental Progress & Sustainable Energy. 2021; ():1.

Chicago/Turabian Style

Xinming Song; Yongsheng Deng; Fengshun Jiao; Jing Shi; Meng Cheng; Qianliang Xiang; Chengyan Yue; Zitong Zhang; Shujian Li; Hyoungmi Kim. 2021. "Virtual power plant implementation scheme in Shenzhen city." Environmental Progress & Sustainable Energy , no. : 1.

Journal article
Published: 03 December 2020 in IEEE Transactions on Applied Superconductivity
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In the process of power compensation of the superconducting magnetic energy storage system (SMES) in the power grid, the existence of AC loss and eddy current loss will cause the magnet to heat up, and temperature rise is the main factor limiting the power output capability of SMES. This paper proposes a state assessment method (SAM) that considers the temperature rise of the magnet. This method comprehensively considers the effects of the initial operating current (I0), initial temperature (T0), pow-er response time (t) and output voltage (U) of the magnet on the temperature rise. Before SMES responds to the system power command, a magnet temperature estimation link is added to ad-just the power command according to the magnet's possible temperature rise so as to ensure the magnet's safety. By simulat-ing the operating conditions of 150 kJ/100kW SMES in the mi-crogrid, it is proved that the magnet's thermal stability is signifi-cantly improved after adding SAM, and the system operating parameters still meet the requirements within a particular re-sponse time. This method helps to maximize the power response potential of SMES under the premise of protecting the safety of the magnet.

ACS Style

Shuqiang Guo; Li Ren; Ying Xu; Yuanyuan Li; Jing Shi; Guilun Chen; Zheng Li; Yuejin Tang; Jingdong Li. Study on Energy Storage Magnet State Assessment Method Considering Temperature Rise. IEEE Transactions on Applied Superconductivity 2020, 31, 1 -11.

AMA Style

Shuqiang Guo, Li Ren, Ying Xu, Yuanyuan Li, Jing Shi, Guilun Chen, Zheng Li, Yuejin Tang, Jingdong Li. Study on Energy Storage Magnet State Assessment Method Considering Temperature Rise. IEEE Transactions on Applied Superconductivity. 2020; 31 (2):1-11.

Chicago/Turabian Style

Shuqiang Guo; Li Ren; Ying Xu; Yuanyuan Li; Jing Shi; Guilun Chen; Zheng Li; Yuejin Tang; Jingdong Li. 2020. "Study on Energy Storage Magnet State Assessment Method Considering Temperature Rise." IEEE Transactions on Applied Superconductivity 31, no. 2: 1-11.

Journal article
Published: 19 October 2020 in Applied Sciences
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As the electricity consumption and controllability of residential consumers are gradually increasing, demand response (DR) potentials of residential consumers are increasing among the demand side resources. Since the electricity consumption level of individual households is low, residents’ flexible load resources can participate in demand side bidding through the integration of load aggregator (LA). However, there is uncertainty in residential consumers’ participation in DR. The LA has to face the risk that residents may refuse to participate in DR. In addition, demand side competition mechanism requires the LA to formulate reasonable bidding strategies to obtain the maximum profit. Accordingly, this paper focuses on how the LA formulate the optimal bidding strategy considering the uncertainty of residents’ participation in DR. Firstly, the physical models of flexible loads are established to evaluate the ideal DR potential. On this basis, to quantify the uncertainty of the residential consumers, this paper uses a fuzzy system to construct a model to evaluate the residents’ willingness to participate in DR. Then, based on the queuing method, a bidding decision-making model considering the uncertainty is constructed to maximize the LA’s income. Finally, based on a case simulation of a residential community, the results show that compared with the conventional bidding strategy, the optimal bidding model considering the residents’ willingness can reduce the response cost of the LA and increase the LA’s income.

ACS Style

Zhaofang Song; Jing Shi; Shujian Li; Zexu Chen; Wangwang Yang; Zitong Zhang. Day Ahead Bidding of a Load Aggregator Considering Residential Consumers Demand Response Uncertainty Modeling. Applied Sciences 2020, 10, 7310 .

AMA Style

Zhaofang Song, Jing Shi, Shujian Li, Zexu Chen, Wangwang Yang, Zitong Zhang. Day Ahead Bidding of a Load Aggregator Considering Residential Consumers Demand Response Uncertainty Modeling. Applied Sciences. 2020; 10 (20):7310.

Chicago/Turabian Style

Zhaofang Song; Jing Shi; Shujian Li; Zexu Chen; Wangwang Yang; Zitong Zhang. 2020. "Day Ahead Bidding of a Load Aggregator Considering Residential Consumers Demand Response Uncertainty Modeling." Applied Sciences 10, no. 20: 7310.

Journal article
Published: 21 April 2020 in IEEE Transactions on Applied Superconductivity
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With the rapid development of the integrated power system (IPS) on shipboard, the medium voltage DC (MVDC) power distribution system has received widely attention. At present, one of the bottlenecks restricting the development of MVDC IPS for ships is the occurrence of short circuit faults. Short circuit faults not only cause extensive damage to the line hardware, but also cause a lot of losses. Therefore, how to protect system from high-amplitude short circuit fault current has become a hot research topic. In order to ensure that the MVDC IPS of the ship can still operate safely in the event of typical faults, a flux-coupling-type superconducting fault current limiter (SFCL) is applied to shipboard MVDC IPS under two typical short circuit faults. In this paper, a flux-coupling-type SFCL is conceptual and electromagnetic designed, with working principle analyzed and mathematical model established. Two typical types of short-circuit fault are selected in the shipboard MVDC IPS, and the flux-coupling-type SFCL is installed at different positions on two fault short platforms to evaluate its performance. The results show that the flux-coupling-type SFCL has effective current limiting performance on protection of shipboard MVDC IPS.

ACS Style

Zheng Li; Siyuan Liang; Li Ren; Xiangyu Tan; Ying Xu; Yuejin Tang; Jingdong Li; Jing Shi. Application of Flux-Coupling-Type Superconducting Fault Current Limiter on Shipboard MVDC Integrated Power System. IEEE Transactions on Applied Superconductivity 2020, 30, 1 -8.

AMA Style

Zheng Li, Siyuan Liang, Li Ren, Xiangyu Tan, Ying Xu, Yuejin Tang, Jingdong Li, Jing Shi. Application of Flux-Coupling-Type Superconducting Fault Current Limiter on Shipboard MVDC Integrated Power System. IEEE Transactions on Applied Superconductivity. 2020; 30 (4):1-8.

Chicago/Turabian Style

Zheng Li; Siyuan Liang; Li Ren; Xiangyu Tan; Ying Xu; Yuejin Tang; Jingdong Li; Jing Shi. 2020. "Application of Flux-Coupling-Type Superconducting Fault Current Limiter on Shipboard MVDC Integrated Power System." IEEE Transactions on Applied Superconductivity 30, no. 4: 1-8.

Journal article
Published: 12 March 2020 in IEEE Transactions on Applied Superconductivity
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The level of short circuit current in power system is increasing rapidly, and flux-coupling superconducting fault current limiter based on paralleled superconducting windings can effectively limit short-circuit current by the increased impedance after decoupling of the windings. The superconducting winding with high coupling factor is the core component of this SFCL, and the voltage distribution of windings may be uneven depending on the winding type and operating condition. This could affect the quenching of superconducting windings, and even endanger the insulation. In this paper, the voltage distribution of pancake-winding and layer-winding is theoretically analyzed, then simulations considering different operating conditions were carried out, and two prototypes were processed and the experiment results are in accordance with simulation to some degree.

ACS Style

Zhiwei Cao; Li Ren; SiNian Yan; Yu Zhang; Guilun Chen; Rongyu Su; Ying Xu; Yuejin Tang; Jing Shi; Jingdong Li. Voltage Distribution Research on Flux-Coupling-Type SFCL. IEEE Transactions on Applied Superconductivity 2020, 30, 1 -5.

AMA Style

Zhiwei Cao, Li Ren, SiNian Yan, Yu Zhang, Guilun Chen, Rongyu Su, Ying Xu, Yuejin Tang, Jing Shi, Jingdong Li. Voltage Distribution Research on Flux-Coupling-Type SFCL. IEEE Transactions on Applied Superconductivity. 2020; 30 (4):1-5.

Chicago/Turabian Style

Zhiwei Cao; Li Ren; SiNian Yan; Yu Zhang; Guilun Chen; Rongyu Su; Ying Xu; Yuejin Tang; Jing Shi; Jingdong Li. 2020. "Voltage Distribution Research on Flux-Coupling-Type SFCL." IEEE Transactions on Applied Superconductivity 30, no. 4: 1-5.

Journal article
Published: 13 September 2019 in Energies
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Voltage source converter-based (VSC-based) DC systems play an important role in connecting large-scale renewable energy and distributed energy, but they are vulnerable to DC short-circuit fault and lacks mature protection devices and appropriate protection strategies. Therefore, a hybrid type DC superconducting fault current limiter (H-SFCL) is proposed and the current limiting mechanism of the SFCL is analyzed. According to the requirements and strategies for protection, several different effective parameter matching and optimization methods of the H-SFCL are proposed by combining optimization algorithms and two short-circuit transient calculation models of VSC-based DC systems. The optimization methods proposed in this paper are compared and analyzed in terms of convergence, running time, calculation range and stability of optimization results, revealing their respective calculation characteristics. Finally, the effectiveness of parameter matching and optimization methods are well validated by comparison and analysis of simulation. The proposed methods can select a good parameter matching scheme of the H-SFCL to deal with different requirements.

ACS Style

Siyuan Liang; Yuejin Tang; Li Ren; Ying Xu; Jing Shi; Zheng Li; Xiangyu Tan. Parameter Matching and Optimization of a Hybrid Type DC SFCL Considering the Transient Characteristics of VSC-Based DC Systems. Energies 2019, 12, 3522 .

AMA Style

Siyuan Liang, Yuejin Tang, Li Ren, Ying Xu, Jing Shi, Zheng Li, Xiangyu Tan. Parameter Matching and Optimization of a Hybrid Type DC SFCL Considering the Transient Characteristics of VSC-Based DC Systems. Energies. 2019; 12 (18):3522.

Chicago/Turabian Style

Siyuan Liang; Yuejin Tang; Li Ren; Ying Xu; Jing Shi; Zheng Li; Xiangyu Tan. 2019. "Parameter Matching and Optimization of a Hybrid Type DC SFCL Considering the Transient Characteristics of VSC-Based DC Systems." Energies 12, no. 18: 3522.