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学者姓名：谢楠
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Abstract ：
An optical voltage sensor with an arbitrary electric field direction modulation (AEFDM) mode is proposed to increase the half-wave voltage. The mode is realized by heterogeneous electrodes arranged in a center-symmetric way, and generates an electric field with a direction at an arbitrary angle to the light propagation direction. The finite element method and coupling wave theory are used to design and optimize the electrodes and field distribution. The experimental results show that heterogeneous electrodes and AEFDM mode are able to regulate the sensor’s half-wave voltage in a range from 1 to 30 times (47-1409 kV), with 0.5 class accuracy and 99.99% linearity. This novel AEFDM method proposes a new electrode shape and position, reducing temperature drift to 50% compared to solid-state voltage divider method. © 2024 IOP Publishing Ltd.
Keyword ：
arbitrary- electric-field-direction-modulation arbitrary- electric-field-direction-modulation half-wave voltage half-wave voltage heterogeneous electrodes heterogeneous electrodes optical voltage sensor optical voltage sensor
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| GB/T 7714 | Lin, Y. , Xu, Q. , Li, J. et al. Half-wave voltage controllable optical voltage sensor with arbitrary electric field direction modulation [J]. | Measurement Science and Technology , 2024 , 35 (10) . |
| MLA | Lin, Y. et al. "Half-wave voltage controllable optical voltage sensor with arbitrary electric field direction modulation" . | Measurement Science and Technology 35 . 10 (2024) . |
| APA | Lin, Y. , Xu, Q. , Li, J. , Xie, N. , Yang, Y. . Half-wave voltage controllable optical voltage sensor with arbitrary electric field direction modulation . | Measurement Science and Technology , 2024 , 35 (10) . |
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Abstract ：
Dirac degeneracy is a fourfold band crossing point in a three-dimensional momentum space, which possesses Fermi-arc-like surface states, and has extensive application prospects. In this work, we systematically study the exceptional effects of the robust chiral surface wave supported by photonic Dirac semimetal acts on the dielectric particles. Theoretical results show that orthogonal electromagnetic modes and helical or chiral whispering gallery modes (WGMs) of dielectric particles can be efficiently excited by the unidirectional spin-polarized surface wave. More importantly, optical forces exerted by the spin-polarized surface wave exhibit chirality-dependent symmetric behavior and high chiral Q factor with precise size selectivity. Our findings may provide potential applications in the area of chiral microcavity, spin optical devices, and optical manipulations. © 2024 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.
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| GB/T 7714 | Zhao, Y. , Chan, H.-C. , Bi, K. et al. Chiral whispering gallery modes and chirality-dependent symmetric optical force induced by a spin-polarized surface wave of photonic Dirac semimetal [J]. | Optics Letters , 2024 , 49 (15) : 4306-4309 . |
| MLA | Zhao, Y. et al. "Chiral whispering gallery modes and chirality-dependent symmetric optical force induced by a spin-polarized surface wave of photonic Dirac semimetal" . | Optics Letters 49 . 15 (2024) : 4306-4309 . |
| APA | Zhao, Y. , Chan, H.-C. , Bi, K. , Duan, G. , Liu, M. , Xie, N. et al. Chiral whispering gallery modes and chirality-dependent symmetric optical force induced by a spin-polarized surface wave of photonic Dirac semimetal . | Optics Letters , 2024 , 49 (15) , 4306-4309 . |
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Abstract ：
为了加强配电网自动化技术课程建设，提出基于虚实协同配合的实验教学方案。以“情景互动、探究创新”为实验教学理念，将课堂理论、虚拟仿真和物理仿真三者紧密结合。从需求导向出发，设计了四个渐进式实验，通过沉浸式教学，让学生了解配电网和开关设备的结构形态，掌握配电网运行、故障与保护算法的原理，培养学生的创新思维和创新设计能力。最后，建立主、客观评价相结合的综合评价体系，对学生参与实验的每个环节进行评价，通过收集反馈信息，持续改进评价体系。
Keyword ：
实验教学 实验教学 物理仿真 物理仿真 虚拟仿真 虚拟仿真 配电网 配电网
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| GB/T 7714 | 林宝全 , 高伟 , 郭谋发 et al. 虚实协同的“配电网自动化技术”实验项目建设 [J]. | 电气电子教学学报 , 2024 , 46 (02) : 216-220 . |
| MLA | 林宝全 et al. "虚实协同的“配电网自动化技术”实验项目建设" . | 电气电子教学学报 46 . 02 (2024) : 216-220 . |
| APA | 林宝全 , 高伟 , 郭谋发 , 谢楠 . 虚实协同的“配电网自动化技术”实验项目建设 . | 电气电子教学学报 , 2024 , 46 (02) , 216-220 . |
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Abstract ：
The existing busbar energy extraction and laser energy supply methods on the high-voltage side of a light-transmitting current transformer suffer from the problems of power supply dead zones, low energy conversion efficiency, and insufficient service life. Thus an ultra-low power optoelectronic transmission system scheme based on four-level coding and weak light communication is proposed. First, a three-state gate circuit is designed to encode the sampling clock and data signal of the signal sampling module into a four-level signal. Then, the four-level signal is converted into an optical signal and transmitted to the low-voltage side through an optical fiber using an ultra-high brightness and ultra-low power LED. Finally, the signal is decoded at the low voltage side using a high-sensitivity avalanche photodiode detector for weak light detection and then input to the decoding circuit. The ultra-low power system is applied to the light-transmitting current transformer for experimental verification. The results show that it can meet the requirements of 0.2-level accuracy, and the average power consumption of the high-voltage side can be reduced to 3.91 mW. Because of the ultra-low power consumption of the system, the high-voltage side can adopt a reliable energy supply scheme such as a large-capacity battery or low-power photovoltaic system. This solves the problem of power supply and improves stability and reliability. © 2024 Power System Protection and Control Press. All rights reserved.
Keyword ：
Decoding Decoding Electric currents Electric currents Electric instrument transformers Electric instrument transformers Electric power transmission Electric power transmission Electric power utilization Electric power utilization Energy conversion efficiency Energy conversion efficiency Energy resources Energy resources Signal sampling Signal sampling Silicon Silicon
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| GB/T 7714 | Xu, Wenhao , Xu, Qifeng , Xie, Nan . An ultra-low power optical current transformer based on four-level coding and weak-light communication [J]. | Power System Protection and Control , 2024 , 52 (5) : 148-157 . |
| MLA | Xu, Wenhao et al. "An ultra-low power optical current transformer based on four-level coding and weak-light communication" . | Power System Protection and Control 52 . 5 (2024) : 148-157 . |
| APA | Xu, Wenhao , Xu, Qifeng , Xie, Nan . An ultra-low power optical current transformer based on four-level coding and weak-light communication . | Power System Protection and Control , 2024 , 52 (5) , 148-157 . |
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Abstract ：
Dirac degeneracy is a fourfold band crossing point in a threedimensional momentum space, which possesses Fermi-arc-like surface states, and has extensive application prospects. In this work, we systematically study the exceptional effects of the robust chiral surface wave supported by photonic Dirac semimetal acts on the dielectric particles. Theoretical results show that orthogonal electromagnetic modes and helical or chiral whispering gallery modes (WGMs) of dielectric particles can be efficiently excited by the unidirectional spin-polarized surface wave. More importantly, optical forces exerted by the spin-polarized surface wave exhibit chirality-dependent symmetric behavior and high chiral Q factor with precise size selectivity. Our findings may provide potential applications in the area of chiral microcavity, spin optical devices, and optical manipulations. (c) 2024 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.
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| GB/T 7714 | Zhao, Yu , Chan, Hsun-Chi , Bi, Ke et al. Chiral whispering gallery modes and chirality-dependent symmetric optical force induced by a spin-polarized surface wave of photonic Dirac semimetal [J]. | OPTICS LETTERS , 2024 , 49 (15) : 4306-4309 . |
| MLA | Zhao, Yu et al. "Chiral whispering gallery modes and chirality-dependent symmetric optical force induced by a spin-polarized surface wave of photonic Dirac semimetal" . | OPTICS LETTERS 49 . 15 (2024) : 4306-4309 . |
| APA | Zhao, Yu , Chan, Hsun-Chi , Bi, Ke , Duan, Gaoyan , Liu, Maoxin , Xie, Nan et al. Chiral whispering gallery modes and chirality-dependent symmetric optical force induced by a spin-polarized surface wave of photonic Dirac semimetal . | OPTICS LETTERS , 2024 , 49 (15) , 4306-4309 . |
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Abstract ：
An optical voltage sensor with an arbitrary electric field direction modulation (AEFDM) mode is proposed to increase the half-wave voltage. The mode is realized by heterogeneous electrodes arranged in a center-symmetric way, and generates an electric field with a direction at an arbitrary angle to the light propagation direction. The finite element method and coupling wave theory are used to design and optimize the electrodes and field distribution. The experimental results show that heterogeneous electrodes and AEFDM mode are able to regulate the sensor's half-wave voltage in a range from 1 to 30 times (47-1409 kV), with 0.5 class accuracy and 99.99% linearity. This novel AEFDM method proposes a new electrode shape and position, reducing temperature drift to 50% compared to solid-state voltage divider method.
Keyword ：
arbitrary- electric-field-direction-modulation arbitrary- electric-field-direction-modulation half-wave voltage half-wave voltage heterogeneous electrodes heterogeneous electrodes optical voltage sensor optical voltage sensor
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| GB/T 7714 | Lin, Yifan , Xu, Qifeng , Li, Jun et al. Half-wave voltage controllable optical voltage sensor with arbitrary electric field direction modulation [J]. | MEASUREMENT SCIENCE AND TECHNOLOGY , 2024 , 35 (10) . |
| MLA | Lin, Yifan et al. "Half-wave voltage controllable optical voltage sensor with arbitrary electric field direction modulation" . | MEASUREMENT SCIENCE AND TECHNOLOGY 35 . 10 (2024) . |
| APA | Lin, Yifan , Xu, Qifeng , Li, Jun , Xie, Nan , Yang, Yang . Half-wave voltage controllable optical voltage sensor with arbitrary electric field direction modulation . | MEASUREMENT SCIENCE AND TECHNOLOGY , 2024 , 35 (10) . |
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Abstract ：
针对传光式电流互感器高压侧现有的母线取能和激光供能方式存在供电死区、能量转换效率低、使用寿命不足等问题，提出一种基于四电平编码与弱光通信的极低功耗光电传输系统方案。首先，设计三态门电路将信号采集模块的采样时钟和数据信号叠加为一个四电平信号。然后，利用超高亮度且极低功耗的LED将四电平信号转换为光信号并通过光纤传输至低压侧。最后，在低压侧通过高灵敏度雪崩光电二极管探测器进行弱光检测后输入解码电路实现信号解码。将极低功耗光电传输系统应用于传光式电流互感器中进行实验验证，测量结果满足0.2级精度要求，系统高压侧的平均功耗可降低至3.91 mW，保证测量精度的同时大幅降低了功耗。由于高压侧的功耗极低，故可采用大容量电池或小功率光伏系统等可靠供能方案，从而解决了高压侧的供能问题，提高了系统的稳定性和可靠性。
Keyword ：
三态门四电平编码 三态门四电平编码 传光式电流互感器 传光式电流互感器 信号解码 信号解码 弱光通信 弱光通信 极低功耗 极低功耗
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| GB/T 7714 | 徐文浩 , 徐启峰 , 谢楠 . 基于四电平编码与弱光通信的极低功耗传光式电流互感器 [J]. | 电力系统保护与控制 , 2024 , 52 (05) : 148-157 . |
| MLA | 徐文浩 et al. "基于四电平编码与弱光通信的极低功耗传光式电流互感器" . | 电力系统保护与控制 52 . 05 (2024) : 148-157 . |
| APA | 徐文浩 , 徐启峰 , 谢楠 . 基于四电平编码与弱光通信的极低功耗传光式电流互感器 . | 电力系统保护与控制 , 2024 , 52 (05) , 148-157 . |
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In order to solve the problem of energy supply on the high voltage side of the active electronic current transformer (ECT), a signal coding method based on a three-state gate circuit is proposed. The sampling clock signal and sampling data signal of the analog-to-digital converter (ADC) are encoded as a four-level signal by the three-state gate circuit, and then directly drive the ultra-high-brightness LED to be converted into optical signals and transmitted to the low-voltage side for decoding. This method requires only a one-way photoelectric transmission system to realize three-wire SPI communication, which can reduce the power consumption of the high-voltage side to less than 5mW, so it can be selected as a disposable high-capacity battery power supply to solve the problem of the high-voltage side of the energy supply. In addition, for the problem of four-level signal distortion affecting signal recognition and decoding found in the experiment, a recognition method based on support vector machine (SVM) is proposed. The results show that the recognition correct rate can reach 99.25%, and the recognition of a single pulse takes only 11.46μs, which can meet the signal recognition requirements of ECT. © 2023 IEEE.
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| GB/T 7714 | Xu, Wenhao , Zhang, Yong , Xie, Nan . Signal Coding and Recognizing Method Based on Three-State Gate Circuit and Support Vector Machine [C] . 2023 : 721-725 . |
| MLA | Xu, Wenhao et al. "Signal Coding and Recognizing Method Based on Three-State Gate Circuit and Support Vector Machine" . (2023) : 721-725 . |
| APA | Xu, Wenhao , Zhang, Yong , Xie, Nan . Signal Coding and Recognizing Method Based on Three-State Gate Circuit and Support Vector Machine . (2023) : 721-725 . |
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Existing IOT communication protocols such as MQTT(Message Queuing Telemetry Transport) and CoAP(Constrained Application Protocol) cannot meet the requirements of high reliability and real-time performance for the power system. To solve the problem, this paper proposes a reduced IEC61850 9-2SV (Sample Value) protocol for the IOT controller, ensuring high sample time for ADC and high transmission frequency of IOT devices. The protocol simplifies and trims some parameters, and changes the floating-point value into integer data. To decrease the burden of WIFI transmission, we proposed the bundle message and replacement message. The former bundle several sample value at the different time stamp and transmit them just in one payload. The latter tells the receiver how to replace some information in the former message to get a new one. The experiment shows the maximum transmittance frequency of SV messages could be considered as a constant, 1/15us. The bundle number has a linear relationship with maximum transmission bits per second and maximum sample rate. When bundling 45 sample values in one payload, the maximum transmission rate is 163.2 Mbps. © 2022 IEEE.
Keyword ：
Digital arithmetic Digital arithmetic Electric power transmission Electric power transmission Internet of things Internet of things
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| GB/T 7714 | Lin, Yifan , Xie, Nan . IEC61850 Sample Value Service Based on Reduced Application Service Data Unit for Energy IOT [C] . 2022 : 542-547 . |
| MLA | Lin, Yifan et al. "IEC61850 Sample Value Service Based on Reduced Application Service Data Unit for Energy IOT" . (2022) : 542-547 . |
| APA | Lin, Yifan , Xie, Nan . IEC61850 Sample Value Service Based on Reduced Application Service Data Unit for Energy IOT . (2022) : 542-547 . |
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Temperature, stress birefringence and low frequency vibration have a negative impact on the long-term operation instability of optical voltage sensors (OVS), resulting in large random and fluctuate errors in the output signal. In order to suppress the error, this paper developed a method based on electrical field modulation with high-speed rotating isomerism electrodes and the digital lock-in amplifier technology. This method can shift the frequency band of the measured signal to 2kHz, avoiding the low-frequency ( © 2022 IEEE.
Keyword ：
Birefringence Birefringence Electric fields Electric fields Electrodes Electrodes Isomers Isomers Locks (fasteners) Locks (fasteners) Random errors Random errors Stereochemistry Stereochemistry
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| GB/T 7714 | Li, Jun , Lin, Yifan , Xie, Nan . Design of optical voltage sensor based on electric field regulation and rotating isomerism electrode [C] . 2022 . |
| MLA | Li, Jun et al. "Design of optical voltage sensor based on electric field regulation and rotating isomerism electrode" . (2022) . |
| APA | Li, Jun , Lin, Yifan , Xie, Nan . Design of optical voltage sensor based on electric field regulation and rotating isomerism electrode . (2022) . |
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