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学者姓名：许志红
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Abstract ：
In order to improve the accuracy and efficiency of fault arc detection, this paper adopts the characteristic quantity of arc current wavelet decomposition coefficient to pre-judge arc signals, and adopts the wavelet Mallet algorithm to perform multi-scale decomposition of arc signals. The decomposed wavelet coefficient of arc current wave is taken as the characteristic quantity, and an adaptive threshold algorithm is proposed for detection. According to the results of the threshold detection algorithm, the current signal is selectively input into the residual neural network, which effectively improves the detection accuracy. Finally, the feasibility of detecting fault arc with residual neural network is verified, and its accuracy rate reaches 98.73%. © Beijing Paike Culture Commu. Co., Ltd. 2024.
Keyword ：
Fault detection Fault detection Signal processing Signal processing Wavelet decomposition Wavelet decomposition
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| GB/T 7714 | Lu, Yongjiang , Xu, Zhihong . Low Voltage Fault Arc Detection Method Based on Wavelet Threshold and Residual Neural Network [C] . 2024 : 753-762 . |
| MLA | Lu, Yongjiang 等. "Low Voltage Fault Arc Detection Method Based on Wavelet Threshold and Residual Neural Network" . (2024) : 753-762 . |
| APA | Lu, Yongjiang , Xu, Zhihong . Low Voltage Fault Arc Detection Method Based on Wavelet Threshold and Residual Neural Network . (2024) : 753-762 . |
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The arc extinguishing system is the main component of the micro circuit breaker, and the structural parameters such as the arc extinguishing grid, the size of the outlet hole, and the contact angle affect the breaking capacity of the micro circuit breaker. In this paper, an arc simulation model is built based on magnetohydrodynamics. On this basis, the transient process of short-circuit current is taken into account to improve the accuracy of the simulation model, and the validity of the model is verified by experiments. Based on the simulation model, the influence of arc extinguishing grid and outlet hole size on the arc extinguishing ability of micro circuit breaker is analyzed by arc shape and external characteristics. The results show that increasing the arc extinguishing grid will make it difficult for the arc to enter the grid, but at the same time, it can increase the arc voltage and promote the extinction of the arc. In terms of the outlet hole, the uneven distribution of the arc when the outlet hole size is 2 mm and 4 mm will cause the arc to blow out from the grid, and the phenomenon of the arc blowing out from the grid can be effectively avoided when the outlet hole size is 3 mm. © Beijing Paike Culture Commu. Co., Ltd. 2024.
Keyword ：
Circuit simulation Circuit simulation Contact angle Contact angle Electric circuit breakers Electric circuit breakers Magnetohydrodynamics Magnetohydrodynamics Timing circuits Timing circuits
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| GB/T 7714 | Li, Xiaodong , Liu, Xiangjun , Xu, Zhihong . Simulation and Research on Short Circuit Breaking Arc Characteristics of Micro Circuit Breaker [C] . 2024 : 32-40 . |
| MLA | Li, Xiaodong 等. "Simulation and Research on Short Circuit Breaking Arc Characteristics of Micro Circuit Breaker" . (2024) : 32-40 . |
| APA | Li, Xiaodong , Liu, Xiangjun , Xu, Zhihong . Simulation and Research on Short Circuit Breaking Arc Characteristics of Micro Circuit Breaker . (2024) : 32-40 . |
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Abstract ：
Most of the existing fault arc circuit breaker is only for single circuit single load. Aiming at the problem of complex running load of low-voltage power lines, set up an experimental platform to collect the current signals of series fault arcs in main and branch lines under the conditions of single load operation and multi-load operation of typical household loads, to create a waveform database. Various time-frequency domain feature quantities are extracted, and a subset of the feature quantity data is constructed by random forest and input to a regularized limit learning machine (RELM) for fault arc detection, and the most appropriate input weights and implied layer thresholds of the RELM are optimally selected by a particle swarm optimization (PSO) to improve the accuracy of fault arc identification. The result shows that the PSO-RELM algorithm achieves an accuracy of 98.37% and can accurately identify fault arcs in multi-load situations. © Beijing Paike Culture Commu. Co., Ltd. 2024.
Keyword ：
Electric circuit breakers Electric circuit breakers Frequency domain analysis Frequency domain analysis Machine learning Machine learning Particle swarm optimization (PSO) Particle swarm optimization (PSO) Swarm intelligence Swarm intelligence
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| GB/T 7714 | Chen, Hongda , Xu, Zhihong . Multi-load Series Fault Arc Identification Based on PSO-RELM [C] . 2024 : 117-125 . |
| MLA | Chen, Hongda 等. "Multi-load Series Fault Arc Identification Based on PSO-RELM" . (2024) : 117-125 . |
| APA | Chen, Hongda , Xu, Zhihong . Multi-load Series Fault Arc Identification Based on PSO-RELM . (2024) : 117-125 . |
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In order to solve the problem of low efficiency of traditional intelligent contactor performance test, this paper proposes a contactor dynamic characteristic test and analysis system based on NI CompactRIO, which is convenient for measuring the performance index of intelligent contactor. The system includes a Human-Machine-Interaction(HMI) interface, which can control the action of the contactor to be detected and collect signals in the host computer platform. According to the trend of the collected signal waveform, the performance indexes of the contactor, such as the closing/opening time, the closing/holding power, are calculated. The system also has the functions of cyclic switching test and automatic data storage, which greatly improves the automation level and efficiency of the test. It provides data support for the improvement and optimization of the control strategy of intelligent contactor. © Beijing Paike Culture Commu. Co., Ltd. 2024.
Keyword ：
Computer control systems Computer control systems Digital storage Digital storage Efficiency Efficiency
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| GB/T 7714 | Tian, Yaoming , Xu, Zhihong . A Testing System Design of Dynamic Characteristics of Contactor Based on CompactRIO [C] . 2024 : 823-830 . |
| MLA | Tian, Yaoming 等. "A Testing System Design of Dynamic Characteristics of Contactor Based on CompactRIO" . (2024) : 823-830 . |
| APA | Tian, Yaoming , Xu, Zhihong . A Testing System Design of Dynamic Characteristics of Contactor Based on CompactRIO . (2024) : 823-830 . |
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The actuator drivers are rarely transplanted among different contactors because the self-tuning of excitation control parameters either takes a long time or is relevant to many contactor structural parameters. An adaptive actuator driver for ac contactors is proposed based on the coil impedance estimation and mathematical equations between the coil impedance and excitation control parameters. The coil impedance estimation and its error correction are established through the voltage balance equation when the contactor is in the open position. The coil inductance estimation is established through the zero-state response equation when the contactor is in the closed position. The mathematical equations are established based on the equivalence of the electromagnetic force under different excitation methods, the power consumption model, and the control system's transfer function. A geometric feature of the flux linkage waveform is established to identify whether a contactor is in the closed position and realize the self-transition of the driver's working state. Then, self-tuning regulators for the excitation control parameters are realized. This driver has a plug-and-play function for ac contactors and can reduce the contactor's power consumption. This driver may be prospectively reduced to a chip.
Keyword ：
Actuator Actuator contactor contactor estimation estimation self-tuning regulator self-tuning regulator
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| GB/T 7714 | Zhang, Changkun , Xu, Zhihong . An Adaptive Actuator Driver for AC Contactors [J]. | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2024 , 71 (4) : 3904-3914 . |
| MLA | Zhang, Changkun 等. "An Adaptive Actuator Driver for AC Contactors" . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 71 . 4 (2024) : 3904-3914 . |
| APA | Zhang, Changkun , Xu, Zhihong . An Adaptive Actuator Driver for AC Contactors . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2024 , 71 (4) , 3904-3914 . |
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Abstract ：
The basis of intelligent control of contactor is mostly realized by DC control and high-frequency PWM control. In order to further optimize the control algorithm for problems such as bounce and contact arc, parameter identification of electromagnetic mechanism is essential, and parameter mismatch directly affects the control accuracy of the algorithm. Based on the control rate accelerator CLA (Control Law Accelerator) module of digital signal processor DSP chip TMS320F28069, the parameters of electromagnetic mechanism controlled by intelligent closed-loop control algorithm of contactor are identified in real time, which greatly reduces the calculation burden of the chip under high frequency control. The identification results are output through SPI protocol and DAC module, which verifies the effectiveness of the parameter identification system. © 2024 IEEE.
Keyword ：
Control theory Control theory Digital signal processing Digital signal processing Digital signal processors Digital signal processors Parameter estimation Parameter estimation Pulse width modulation Pulse width modulation
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| GB/T 7714 | Xu, Qing , Zhuang, Jierong , Xu, Zhihong . Parameter Identification Design of Intelligent Contactor Based on DSP-Control Law Accelerator [C] . 2024 : 1930-1934 . |
| MLA | Xu, Qing 等. "Parameter Identification Design of Intelligent Contactor Based on DSP-Control Law Accelerator" . (2024) : 1930-1934 . |
| APA | Xu, Qing , Zhuang, Jierong , Xu, Zhihong . Parameter Identification Design of Intelligent Contactor Based on DSP-Control Law Accelerator . (2024) : 1930-1934 . |
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Abstract ：
针对故障电弧保护电器动作特性测试的试验周期长、效率低等问题,设计了基于PI控制的电弧电流还原装置.通过搭建Multisim与LabVIEW联合仿真环境对电流还原装置的硬件电路进行仿真,以此验证方案的可行性.同时调试硬件装置进行试验验证,对比原始信号与还原信号的时域、频域特征参数和THD值作为电流还原度指标.试验结果表明,电弧电流还原整体还原度良好,该装置基于原始电弧故障数据给电弧故障检测算法和AFDD产品测试提供了更加真实和便利的测试条件.
Keyword ：
PI控制 PI控制 故障电弧 故障电弧 波形特征值 波形特征值 电流还原 电流还原
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| GB/T 7714 | 吴万海 , 许志红 . PI控制的故障电弧电流还原装置设计 [J]. | 福州大学学报（自然科学版） , 2023 , 51 (1) : 62-68 . |
| MLA | 吴万海 等. "PI控制的故障电弧电流还原装置设计" . | 福州大学学报（自然科学版） 51 . 1 (2023) : 62-68 . |
| APA | 吴万海 , 许志红 . PI控制的故障电弧电流还原装置设计 . | 福州大学学报（自然科学版） , 2023 , 51 (1) , 62-68 . |
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For the first time, a direct electromagnetic force closed-loop control strategy for a contactor is proposed in this article. First, an electromagnetic force observer based on a neural network is designed according to a binary one-to-one mapping of the electromagnetic mechanism parameters to observe the real-time electromagnetic force. Then, the real-time spring reaction force is obtained by combining the observed electromagnetic force with the mechanical motion equation and the spring reaction equation. Finally, a constant force margin is added to the real-time reaction force as the reference curve, and the real-time observed electromagnetic force is used as the feedback; thus, direct electromagnetic force closed-loop control is realized through hysteresis regulation. This scheme can control the constant positive acceleration of the movable core in the dynamic process by taking only the constant force margin as the control target, which ensures the reliable action of the contactor and controls the total kinetic energy of the movable core to control the impact energy and inhibit the contact bounces. Therefore, the direct electromagnetic force closed loop can more accurately and directly realize the dynamic matching of the electromagnetic force and reaction force, which is of great significance to the optimization control of the contactor dynamic process.
Keyword ：
Closed-loop control Closed-loop control contactor contactor Couplings Couplings Dynamics Dynamics electromagnetic force observer electromagnetic force observer Electromagnetic forces Electromagnetic forces Electromagnetics Electromagnetics Force Force Mathematical models Mathematical models neural network neural network spring reaction force spring reaction force Springs Springs
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| GB/T 7714 | Tang, Longfei , Chen, Wei , Xu, Zhihong . A Direct Electromagnetic Force Closed-Loop Control Strategy for a Contactor [J]. | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2023 , 70 (2) : 1740-1750 . |
| MLA | Tang, Longfei 等. "A Direct Electromagnetic Force Closed-Loop Control Strategy for a Contactor" . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 70 . 2 (2023) : 1740-1750 . |
| APA | Tang, Longfei , Chen, Wei , Xu, Zhihong . A Direct Electromagnetic Force Closed-Loop Control Strategy for a Contactor . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2023 , 70 (2) , 1740-1750 . |
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Considering the waste incineration plant-carbon capture (WIP-CC) system and market mechanisms, the optimal dispatching strategy of nearly-zero carbon integrated energy system (NZC-IES) is proposed. The incineration of large amounts of Municipal Solid Waste can result in significant carbon emission and air pollution. However, lack of consideration of mechanisms for carbon processing and environmental protection will prevent the development of NZC-IES. Accordingly, a novel mixed integer nonlinear mathematical model, NZC-IES, is established that minimizes the total cost and controls carbon emission and air pollution. Unlike previous studies of optimal dispatching for WIP-CC system, the climate and health costs of WIP and the social costs of energy sources for CC are consid-ered. A model of adjustable thermoelectric ratios for WIP and a model for CC with the storage tanks are established to enhance the flexibility of the thermoelectric output. Also, demand response model and ladder-type carbon trading model are developed to serve for NZC-IES. Case studies reveal that the proposed optimal dispatching strategy can realize the waste to energy utilization and low-carbon emission with economic performance.& COPY; 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Keyword ：
Carbon capture system Carbon capture system Demand response Demand response energy system energy system Ladder-type carbon trading Ladder-type carbon trading Market mechanism Market mechanism Nearly-zero carbon integrated Nearly-zero carbon integrated Waste incineration plant Waste incineration plant
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| GB/T 7714 | Zheng, Wendi , Xu, Zhihong , Shao, Zhenguo et al. Optimal dispatch of nearly-zero carbon integrated energy system considering waste incineration plant-carbon capture system and market mechanisms [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2023 , 48 (69) : 27013-27031 . |
| MLA | Zheng, Wendi et al. "Optimal dispatch of nearly-zero carbon integrated energy system considering waste incineration plant-carbon capture system and market mechanisms" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 48 . 69 (2023) : 27013-27031 . |
| APA | Zheng, Wendi , Xu, Zhihong , Shao, Zhenguo , Li, Jihui , Lei, Kebo , Li, Jiurong . Optimal dispatch of nearly-zero carbon integrated energy system considering waste incineration plant-carbon capture system and market mechanisms . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2023 , 48 (69) , 27013-27031 . |
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Abstract ：
The zero-current opening strategy can effectively improve the electrical life of electromagnetic switches. However, during the period from opening operation to the module sending the opening signal, the zero-current opening strategy requires the control module to have energy storage elements to ensure the reliable maintenance of the electromagnetic switch. The energy storage element increases the volume of the control module, which is difficult to meet the compact design requirements of electromagnetic switches. In this paper, the electrolytic capacitor behind the rectifier bridge in the control module is used as the energy storage capacitor, and a capacity minimization design method based on mathematical model is proposed. By analyzing the charge transfer process of the energy storage capacitor in each working mode of the electromagnetic switch coil drive circuit, building the model of the capacitance and the operation time of the electromagnetic switch after opening operation. According to the maintenance time required for zero-current opening, the minimum capacity of the energy storage capacitor is established to make the volume of the control module as small as possible. © 2023, Beijing Paike Culture Commu. Co., Ltd.
Keyword ：
Electromagnetic Switch Electromagnetic Switch Energy Storage Capacitance Energy Storage Capacitance Maintenance Operation Time Maintenance Operation Time Minimum Design Minimum Design Zero-current Opening Zero-current Opening
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| GB/T 7714 | Hu, C. , Zhang, C. , Xu, Z. . Minimization Design of Energy Storage Capacitor of Electromagnetic Switch Control Module Based on Zero-Current Opening Strategy [未知]. |
| MLA | Hu, C. et al. "Minimization Design of Energy Storage Capacitor of Electromagnetic Switch Control Module Based on Zero-Current Opening Strategy" [未知]. |
| APA | Hu, C. , Zhang, C. , Xu, Z. . Minimization Design of Energy Storage Capacitor of Electromagnetic Switch Control Module Based on Zero-Current Opening Strategy [未知]. |
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