Query：
学者姓名：兰生
Refining：
Year
Type
Indexed by
Source
Complex
Former Name
Co-
Language
Clean All
Abstract ：
针对现有变电站排风机系统噪声过大问题,文章根据负荷功率、噪声、温度等多方面参数,提出了一种考虑噪声限制的变电站排风机变频控制策略.首先从噪声来源、噪声排放标准入手,制定了变电站房相关的降噪措施,在此基础上提出减少排风机的运行台数以及运行转速以减少噪声排放的控制目标.提出了一种以PLC为控制核心的变电站排风机变频策略,该策略能够在保障变电站房室温的基础上,以变电站实际负荷、噪声、室内外温差等数据作为控制逻辑的参数,确定排风机的转速以及启停台数,不仅能满足噪声排放标准,还能实现节能减排、远程操控的功能,提高了变电站日常运维与管理的智能化水平.
Keyword ：
变电站 变电站 噪声 噪声 排风机 排风机 控制策略 控制策略 温度 温度
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 林志煌 , 郑剑毅 , 吕颖悟 et al. 考虑噪声限制的变电站排风机变频控制策略 [J]. | 机电技术 , 2025 , (2) : 84-89 . |
| MLA | 林志煌 et al. "考虑噪声限制的变电站排风机变频控制策略" . | 机电技术 2 (2025) : 84-89 . |
| APA | 林志煌 , 郑剑毅 , 吕颖悟 , 沈晓波 , 林志锋 , 李永强 et al. 考虑噪声限制的变电站排风机变频控制策略 . | 机电技术 , 2025 , (2) , 84-89 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
During the pulsed discharge process in water, the impedance characteristics of the plasma channel can be influenced by adjusting electrical parameters, electrode spacing, pressure levels, and other factors. Understanding how to adjust the impedance value of the discharge circuit is crucial for achieving a more stable and efficient discharge process, which holds significant engineering significance. In order to investigate the variation trends of impedance characteristics of the plasma channel under different discharge conditions, this study independently developed a needle-needle electrode high-voltage discharge system in water. This study measured relevant electrical parameters such as voltage and current of the plasma channel, and using circuit formulas and the particle swarm optimization (PSO) algorithm, the impedance variations of these five cycles under different discharge conditions were investigated. Circuit formulas and the PSO algorithm were usedto investigate the impedance variations of these five cycles under different discharge conditions. The results indicate that, under the experimental conditions of this study, the impedance values across the five cycles exhibit an increasing trend. When the voltage amplitude increases, the resistance of the plasma channel shows a decreasing trend; when the pressure level increases, the resistance of the plasma channel shows an increasing trend; and when the electrode gap increases, the resistance of the plasma channel also exhibits an increasing trend. Additionally, this study simulated the corresponding oscillating waveform based on the plasma impedance values and voltage formulas. By comparing the fitting degree between the actual waveform and simulated waveform, the calculated impedance characteristics obtained in this study were, furthermore, validated as reasonable. © 1973-2012 IEEE.
Keyword ：
Analog circuits Analog circuits Differentiating circuits Differentiating circuits Electric discharges Electric discharges Electric resistance Electric resistance Fiber optic networks Fiber optic networks Needles Needles Particle swarm optimization (PSO) Particle swarm optimization (PSO) Power quality Power quality Timing circuits Timing circuits
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lan, Sheng , Wang, Jiaxu , Yao, Longhui et al. Analysis of Impedance Characteristics of High-Voltage Pulse Discharge Plasma Channels in Water Based on Particle Swarm Optimization [J]. | IEEE Transactions on Plasma Science , 2025 , 53 (4) : 770-779 . |
| MLA | Lan, Sheng et al. "Analysis of Impedance Characteristics of High-Voltage Pulse Discharge Plasma Channels in Water Based on Particle Swarm Optimization" . | IEEE Transactions on Plasma Science 53 . 4 (2025) : 770-779 . |
| APA | Lan, Sheng , Wang, Jiaxu , Yao, Longhui , Ding, Xiaoting , Wang, Jianang . Analysis of Impedance Characteristics of High-Voltage Pulse Discharge Plasma Channels in Water Based on Particle Swarm Optimization . | IEEE Transactions on Plasma Science , 2025 , 53 (4) , 770-779 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
This article focuses on the analysis of the influence of different peak values and static water pressure on the electron density of water discharge plasma. A 2-D axisymmetric model of pulsed discharge in water is established using COMSOL finite element software. The numerical values of the electron density of the plasma during the pulsed discharge process in water are obtained by solving the fluid diffusion equations coupled with the Poisson equation for spatial electric fields. Simulation results show that increasing the peak value will increase the electron density of the water discharge plasma. In a discharge environment with a static water pressure of 0.1 MPa, when the applied peak value is 10 kV, the peak electron density is 2.31 x 10 (23) m(-3). As the applied peak value gradually increases to 15 kV, the peak electron density reaches 8.91 x 10(23) m(-3), and the peak appears earlier. On the other hand, increasing the static water pressure will suppress the discharge process and reduce the peak electron density of the water discharge plasma. In a discharge environment with a static water pressure of 0.5 MPa, when the applied peak value is 10 kV, the peak electron density is only 0.38 x 10 (23) m(-3) . It is also observed that the ability of static water pressure to suppress the peak electron density of water discharge plasma is higher at lower peak values and lower at higher peak values. For example, in a discharge environment with an applied peak value of 10 kV and a static water pressure of 0.5 MPa, the reduction in peak electron density is 83.55% compared to the same voltage level discharge environment at 0.1 MPa. However, when the applied peak value is 15 kV and the static water pressure is 0.5 MPa, the reduction in peak electron density is only 56.57% compared to the same voltage level discharge environment at 0.1 MPa.
Keyword ：
Discharge in water Discharge in water Electrodes Electrodes electron density electron density electron density static water pressure electron density static water pressure Electrons Electrons Finite element analysis Finite element analysis Hydrogen Hydrogen numerical simulation numerical simulation Numerical simulation Numerical simulation plasma plasma Plasmas Plasmas Software Software
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Xiong, Likai , Lan, Sheng , Wang, Jiaxu et al. Numerical Simulation Analysis of Discharge in Water Under Different Pressures [J]. | IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION , 2024 , 31 (5) : 2461-2468 . |
| MLA | Xiong, Likai et al. "Numerical Simulation Analysis of Discharge in Water Under Different Pressures" . | IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION 31 . 5 (2024) : 2461-2468 . |
| APA | Xiong, Likai , Lan, Sheng , Wang, Jiaxu , Ding, Xiaoting , Yuan, Yongbin . Numerical Simulation Analysis of Discharge in Water Under Different Pressures . | IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION , 2024 , 31 (5) , 2461-2468 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Liquid-phase plasma is widely used in industry, so it is important to study its characteristics. In this paper, an experimental system utilizing a cylindrical pressure tank with adjustable hydrostatic pressure for studying liquid-phase pulsed discharge plasma is designed, and the components and experimental principles of the system are introduced in detail. Based on this experimental system, the influence of hydrostatic pressure on the characteristics of liquid-phase plasma was investigated under varying voltage levels and electrode spacings. The results demonstrate that the experimental system can effectively generate and observe liquid-phase plasma. As hydrostatic pressure increases, the pre-breakdown delay at 15 kV and a 2 mm electrode gap increases from 25.6 mu s at 0.1 MPa to 447.2 mu s at 0.5 MPa, while the duration of the main discharge stage decreases from 224.4 to 210.4 mu s. At 13 kV with a 2 mm electrode gap, the emission spectrum intensity and the electron density of the discharge plasma decrease with increasing hydrostatic pressure. The electron temperature in the plasma channel ranges from 11,000 K to 16,500 K. In addition, the discharge process phenomena were analyzed using typical high-speed camera images, highlighting the characteristics of the discharge plasma at each stage. Finally, the shortcomings and improvement of the experimental system are analyzed.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lan, Sheng , Yao, Longhui , Ding, Xiaoting et al. Influence of hydrostatic pressure on the characteristics of single-pulse discharge plasma in water [J]. | PHYSICS OF PLASMAS , 2024 , 31 (12) . |
| MLA | Lan, Sheng et al. "Influence of hydrostatic pressure on the characteristics of single-pulse discharge plasma in water" . | PHYSICS OF PLASMAS 31 . 12 (2024) . |
| APA | Lan, Sheng , Yao, Longhui , Ding, Xiaoting , Wang, Jiaxu , Wang, Jianan , Yuan, Yongbin . Influence of hydrostatic pressure on the characteristics of single-pulse discharge plasma in water . | PHYSICS OF PLASMAS , 2024 , 31 (12) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Streamer discharge is a very complex multi-scale and multi-physics coupling process, and there is no accurate model that can describe its development. In this paper, a two-dimensional axisymmetric fluid model is established in COMSOL to simulate and study the effects of the applied voltage amplitude, the discharge gap distance, the rising edge of pulse voltage, and hydrostatic pressure on the development of the positive streamer discharge at a needle-plate electrode in water under a nanosecond pulse voltage. The results show that increasing the voltage amplitude, decreasing the pulse rise time, and narrowing the discharge gap all increase the electric field strength of the streamer, thereby affecting the electron density of the plasma channel, among which changing the discharge gap has the greatest effect on the electron density. And under the gap of 3 mm, the peak electron density can reach 3.76 x 10(23) m(-3); if the discharge gap is narrowed to 1 mm, the peak electron density is reduced to 1.20 x 10(23) m(-3). In addition, hydrostatic pressure and water molecule spacing are closely linked. Increasing the hydrostatic pressure decreases the electric field strength and the peak electron density in the plasma channel, and its effect on the peak electron density saturates with increasing hydrostatic pressure.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lan, Sheng , Ding, Xiaoting , Wang, Jiaxu et al. Simulation of the pulsed streamer discharge in water considering the effect of hydrostatic pressure [J]. | PHYSICS OF PLASMAS , 2024 , 31 (10) . |
| MLA | Lan, Sheng et al. "Simulation of the pulsed streamer discharge in water considering the effect of hydrostatic pressure" . | PHYSICS OF PLASMAS 31 . 10 (2024) . |
| APA | Lan, Sheng , Ding, Xiaoting , Wang, Jiaxu , Yao, Longhui , Wang, Jianan . Simulation of the pulsed streamer discharge in water considering the effect of hydrostatic pressure . | PHYSICS OF PLASMAS , 2024 , 31 (10) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
电力变压器短路时会产生巨大的短路电动力,当短路电动力过大时会导致变压器绕组变形.为研究三相三绕组变压器短路时的电动力分布和绕组变形情况,本文以一台50MV·A/110kV的三相三绕组变压器为例,计算变压器发生短路时的短路电流,将该短路电流作为激励,通过有限元软件计算绕组的短路电动力,采用磁-结构耦合的方式计算在最大短路电动力作用下的绕组变形和应力分布.结果表明,短路时低压绕组受到向内压缩的辐向电动力和向中间压缩的轴向电动力,绕组中间部分受到的短路电动力大于两端,导致绕组中部的变形程度大于两端.研究结果对研究变压器绕组变形具有一定实际意义.
Keyword ：
三绕组变压器 三绕组变压器 短路电动力 短路电动力 磁-结构耦合 磁-结构耦合 绕组变形 绕组变形
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 林野 , 兰生 , 许明龙 et al. 短路电动力作用下变压器低压绕组变形研究 [J]. | 电气技术 , 2022 , 23 (1) : 8-14 . |
| MLA | 林野 et al. "短路电动力作用下变压器低压绕组变形研究" . | 电气技术 23 . 1 (2022) : 8-14 . |
| APA | 林野 , 兰生 , 许明龙 , 陈杰 , 朱志豪 . 短路电动力作用下变压器低压绕组变形研究 . | 电气技术 , 2022 , 23 (1) , 8-14 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
电力变压器在短路电流冲击下,绕组会发生变形,因此研究绕组变形累积效应尤为重要.本文首先建立在只有A相激励和A、B相都有激励这两种情况下的变压器绕组漏磁场仿真模型,利用Maxwell对绕组漏磁场和轴向磁场进行计算.其次,利用Ansys软件构建短路电流冲击下变压器漏磁场-电动力体密度激励-绕组变形累积的仿真模型,对比分析两种模型下绕组的形变量与冲击次数的关系.研究结果表明,在增加B相激励的情况下,绕组漏磁场和轴向磁场强度增加,单次冲击产生的形变量更大,使绕组形变量发生突变的短路电流冲击次数减少.
Keyword ：
有限元 有限元 累积效应 累积效应 绕组变形 绕组变形 静力学分析 静力学分析
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 许明龙 , 徐玉珍 , 兰生 et al. 考虑电力变压器相间影响的绕组变形累积仿真研究 [J]. | 电气技术 , 2022 , 23 (2) : 13-19 . |
| MLA | 许明龙 et al. "考虑电力变压器相间影响的绕组变形累积仿真研究" . | 电气技术 23 . 2 (2022) : 13-19 . |
| APA | 许明龙 , 徐玉珍 , 兰生 , 林野 , 陈杰 . 考虑电力变压器相间影响的绕组变形累积仿真研究 . | 电气技术 , 2022 , 23 (2) , 13-19 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
可靠精确的故障定位技术对MMC-HVDC输电系统的稳定运行至关重要.针对高阻接地故障的定位精度低的问题,提出了一种基于小波包能量熵(wavelet packet energy entropy,WPEE)和深度信念网络(deep belief network,DBN)的输电线路单极接地故障定位方法.通过对不同条件下故障波形中所包含的故障信息进行分析,运用小波包能量熵提取双端故障电压波形中深层故障特征并构造新的特征矩阵.基于新的特征矩阵搭建DBN模型并通过粒子群寻优(par-ticle swarm optimization,PSO)算法对其模型参数进行寻优,最终利用DBN回归机制实现精确的故障定位.利用电磁暂态仿真软件PSCAD/EMTDC搭建了±250 kV双端MMC-HVDC系统模型并在线路上进行不同位置、不同过渡电阻的单极接地故障模拟仿真.为了对比测试模型的定位精度性能,与基于支持向量机(support vector machine,SVM)的故障定位方法相比较.实验结果表明,该方法在20 kHz的低采样频率下可以精准可靠地定位过渡电阻高达4000Ω以内的直流线路单极接地故障.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 叶鑫杰 , 兰生 , 肖思捷 et al. 基于小波包能量熵和DBN的MMC-HVDC输电线路单极接地故障定位方法 [J]. | 南方电网技术 , 2021 , 15 (2) : 82-91 . |
| MLA | 叶鑫杰 et al. "基于小波包能量熵和DBN的MMC-HVDC输电线路单极接地故障定位方法" . | 南方电网技术 15 . 2 (2021) : 82-91 . |
| APA | 叶鑫杰 , 兰生 , 肖思捷 , 原永滨 . 基于小波包能量熵和DBN的MMC-HVDC输电线路单极接地故障定位方法 . | 南方电网技术 , 2021 , 15 (2) , 82-91 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
针对变压器运行方式改变,变压器在短路电流的冲击作用下,绕组的磁场分布特性存在差异的问题.本文采用了场路耦合的有限元仿真方法,以1台SSZ11-50000/110三相三绕组电力变压器为研究对象,建立了变压器仿真模型,根据建立的变压器的三维模型,考虑变压器在高-中运行方式下,中压侧绕组出现三相短路故障时,计算出了绕组最大分接、额定分接、最小分接3种情况下瞬态漏磁场,分析了3种不同分接情况下绕组不同位置的轴向、辐向的最大磁感应强度分布规律.仿真结果表明,绕组在短路过程中漏磁场的分布情况与运行状态、时间和空间有关.当t=0.01 s,随着短路电流出现最大值,绕组轴向和辐向的瞬态漏磁场数值均为最大,绕组轴向内侧、外侧、中间外侧和辐向顶端和底端漏磁场分布规律差异明显.同时,3种不同分接类型的切换,对高压绕组的磁感应强度畸变影响较大,对中压绕组的磁感应强度畸变影响较小.上述计算结果,可为设计变压器绕组结构提供理论参考.
Keyword ：
三相短路 三相短路 变压器 变压器 场路耦合 场路耦合 有限元仿真 有限元仿真 瞬态磁场 瞬态磁场
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 王康 , 曾静岚 , 郑宇 et al. 基于场路耦合的电力变压器不同运行方式下漏磁场的仿真研究 [J]. | 哈尔滨理工大学学报 , 2021 , 26 (4) : 28-37 . |
| MLA | 王康 et al. "基于场路耦合的电力变压器不同运行方式下漏磁场的仿真研究" . | 哈尔滨理工大学学报 26 . 4 (2021) : 28-37 . |
| APA | 王康 , 曾静岚 , 郑宇 , 兰生 , 杜国安 , 林野 . 基于场路耦合的电力变压器不同运行方式下漏磁场的仿真研究 . | 哈尔滨理工大学学报 , 2021 , 26 (4) , 28-37 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
To solve the problem of the location of the fault point of single-pole-to-ground faults in the transmission lines of MMC-HVDC systems, this paper designs a fault location system based on support vector machine (SVM). The waveform of the traveling wave after the fault occurs is collected as a feature, and the regression mechanism of the SVM is utilized to achieve fault location. Because it is very difficult to locate high-resistance ground faults, this paper first analyzes the waveform characteristics of high-resistance ground faults. Next, three steps are proposed to reduce the influence of grounding resistance on fault location. These steps include using the active pulse waveform as a new feature, classifying the samples according to ground resistance values before training regression models, and a method for adaptively extracting fault distance features is proposed. Finally, a complete location system design is proposed, and its workflow is illustrated. After the simulation test, the proposed location system only needs to obtain a single-ended fault voltage waveform at a fault recording frequency of 20 kHz to achieve an accurate location of single-pole-to-ground faults for different values of grounding resistance.
Keyword ：
Active pulse Active pulse fault location fault location Fault location Fault location Feature extraction Feature extraction Grounding Grounding high-resistance fault high-resistance fault MMC-HVDC system MMC-HVDC system Power transmission lines Power transmission lines Resistance Resistance single-end measurement single-end measurement Support vector machines Support vector machines SVM SVM Transmission line measurements Transmission line measurements
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wu, Jian-Yu , Lan, Sheng , Xiao, Si-Jie et al. Single Pole-to-Ground Fault Location System for MMC-HVDC Transmission Lines Based on Active Pulse and CEEMDAN [J]. | IEEE ACCESS , 2021 , 9 : 42226-42235 . |
| MLA | Wu, Jian-Yu et al. "Single Pole-to-Ground Fault Location System for MMC-HVDC Transmission Lines Based on Active Pulse and CEEMDAN" . | IEEE ACCESS 9 (2021) : 42226-42235 . |
| APA | Wu, Jian-Yu , Lan, Sheng , Xiao, Si-Jie , Yuan, Yong-Bin . Single Pole-to-Ground Fault Location System for MMC-HVDC Transmission Lines Based on Active Pulse and CEEMDAN . | IEEE ACCESS , 2021 , 9 , 42226-42235 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
