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Application effect of high-density electrical method on detecting artificial filling layer: A case study of Chengjiangshan area of Huaibei City
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作者 LI Shuai LIU Lijia +2 位作者 JIA Xiaodong LI Zhuoyang HAN Jiangtao 《Global Geology》 2022年第3期174-181,共8页
High-density electrical method has been proved to be an effective method for probing shallow sedimentary layers.It is principally used to identify the boundary between the Quaternary soil layer and bedrock according t... High-density electrical method has been proved to be an effective method for probing shallow sedimentary layers.It is principally used to identify the boundary between the Quaternary soil layer and bedrock according to the vertical change of apparent resistivity.However,the artificial filling layer has the characteristics of heterogeneity and high porosity,which makes it challenging to detect the artificial filling layer by high-density electrical method.The key to solve this problem is to detect the difference of conductivity between the filling layer and the underlying bedrock.This paper takes the land in Chengjiangshan area of Huaibei City,Anhui Province as the detection target.On the basis of fully analyzing the physical properties of the artificial filling layer,two-dimensional high-density electrical survey and inversion are used to define the thickness of the artificial filling layer.The research shows that the highdensity resistivity method has obvious advantages in delineating the distribution of bedrock and the thickness of the filling layer,and the reliability of the high-density electrical method in the detection of the artificial filling layer,and delineates the scope of the filling layer is verified by the borehole data. 展开更多
关键词 high-density resistivity method filling layer electrical structure 2D inversion
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Viability of high-density resistivity method for evaluating mountain slope stability in Erdaojiang District,Tonghua City,China 被引量:2
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作者 XIN Zhonghua HAN Jiangtao +1 位作者 LI Zhuoyang LIU Lijia 《Global Geology》 2020年第4期225-233,共9页
The authors employ the high-density resistivity method to image the subsurface structure of a mountain in Erdaojiang District,Tonghua City,Jilin Province,China,to evaluate the potential risk of slope failure on surrou... The authors employ the high-density resistivity method to image the subsurface structure of a mountain in Erdaojiang District,Tonghua City,Jilin Province,China,to evaluate the potential risk of slope failure on surrounding residential areas and infrastructure,and identify a shallow fault that extends across the center of the mountain and is perpendicular to the mountain slope and accurately locate the spatial position and depth of another fault on the southern side of the mountain.The results provide an important basis for evaluating mountain slope stability.This study also demonstrates that the high-density resistivity method is effective for detecting mountain faults. 展开更多
关键词 Erdaojiang District Tonghua City Jilin Province high-density resistivity method electrical resistivity structure mountain faults
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Application of high-density resistivity method to evaluate safety around Minyan Tunnel,Helong City 被引量:2
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作者 LI Zhuoyang HAN Jiangtao +1 位作者 XIN Zhonghua LIU Lijia 《Global Geology》 2020年第4期255-262,共8页
By determining the distribution and extent of geological structures surrounding the Mingyan Tunnel,Xicheng Town,Helong City,Jilin Province,we can evaluate the stability of the rock mass and assess potential hazards du... By determining the distribution and extent of geological structures surrounding the Mingyan Tunnel,Xicheng Town,Helong City,Jilin Province,we can evaluate the stability of the rock mass and assess potential hazards during tunnel construction.We use the high-density resistivity method to analyze the subsurface structure of the study area.Conductive anomalies are likely to represent joint and fissure systems within strongly weathered host rocks,and the bedrock surrounding the tunnel is relatively stable and does not contain well-developed faults.High-density resistivity analysis can provide valuable information in the context of tunnel engineering and safety. 展开更多
关键词 Mingyan Tunnel high-density resistivity method electrical resistivity structure safety detection
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Configuration of propagator method for calculation of electron velocity distribution function in gas under crossed electric and magnetic fields
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作者 Hirotake SUGAWARA 《Plasma Science and Technology》 SCIE EI CAS CSCD 2019年第9期1-18,共18页
This paper presents a self-contained description on the configuration of propagator method(PM)to calculate the electron velocity distribution function(EVDF) of electron swarms in gases under DC electric and magnetic f... This paper presents a self-contained description on the configuration of propagator method(PM)to calculate the electron velocity distribution function(EVDF) of electron swarms in gases under DC electric and magnetic fields crossed at a right angle. Velocity space is divided into cells with respect to three polar coordinates v,θ and f. The number of electrons in each cell is stored in three-dimensional arrays. The changes of electron velocity due to acceleration by the electric and magnetic fields and scattering by gas molecules are treated as intercellular electron transfers on the basis of the Boltzmann equation and are represented using operators called the propagators or Green’s functions. The collision propagator, assuming isotropic scattering, is basically unchanged from conventional PMs performed under electric fields without magnetic fields. On the other hand, the acceleration propagator is customized for rotational acceleration under the action of the Lorentz force. The acceleration propagator specific to the present cell configuration is analytically derived. The mean electron energy and average electron velocity vector in a model gas and SF6 were derived from the EVDF as a demonstration of the PM under the Hall deflection and they were in a fine agreement with those obtained by Monte Carlo simulations. A strategy for fast relaxation is discussed, and extension of the PM for the EVDF under AC electric and DC/AC magnetic fields is outlined as well. 展开更多
关键词 PROPAGATOR method electrON velocity distribution function electrON transport COEFFICIENTS CROSSED electric and magnetic fields MAGNETIZED plasma BOLTZMANN equation
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Application of high-density resistivity method for assessing construction safety of Shimodong tunnel in Helong City of Jilin Province
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作者 LI Zhuoyang HAN Jiangtao +1 位作者 LIU Lijia XIN Zhonghua 《Global Geology》 2021年第1期43-48,共6页
Some unfavorable geological conditions can affect the construction of tunnels.In order to evaluate the damage degree of tunnel construction and determine the surrounding rock grade and stability of the tunnel,the auth... Some unfavorable geological conditions can affect the construction of tunnels.In order to evaluate the damage degree of tunnel construction and determine the surrounding rock grade and stability of the tunnel,the authors used high-density resistivity method to detect the surrounding rocks of Shimodong tunnel in Xicheng Town of Helong City.The underground resistivity structures of the entrance,exit and middle parts of the tunnel are obtained.Through analysis,it is found that there are no bedrock faults near the tunnel,although some joints and fissures are developed in some locations,which are characterized by low-resistivity anomalies.The tunnel structures are stable overall,favorable for safe and efficient construction.The study also proves the good application effect of the high-density resistivity method in tunnel safety detection. 展开更多
关键词 Shimodong tunnel high-density resistivity method electrical structure safety detection
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Application of high-density resistivity method in archaeological investigation of Sumicheng ancient city site
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作者 XIN Zhonghua HAN Jiangtao +2 位作者 WANG Zhigang LIU Lijia LI Zhuoyang 《Global Geology》 2021年第1期58-63,共6页
The authors employ the high-density resistivity method during an archaeological investigation of Sumicheng site,an ancient city of the Tang Dynasty,to find evidence of human activities and locate a favorable target fo... The authors employ the high-density resistivity method during an archaeological investigation of Sumicheng site,an ancient city of the Tang Dynasty,to find evidence of human activities and locate a favorable target for archaeological excavation in the southern part of the outer city.There are two obvious high-resistivity structures,the south wall of the inner city and an ancient building near the south gate along the outer city wall,of which the resistivities are indicative of rammed soil foundations.The south wall of the inner city is continuous but is cut off abruptly to the east,which we suggest it is due to either wall damage or destruction.The resistivity signature of the target area is verified by archaeological excavation,proving the feasibility and effectiveness of implementing the high-density resistivity method for archaeological exploration. 展开更多
关键词 Sumicheng ancient city site high-density resistivity method archaeological exploration electrical resistivity structure
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Detection technology and application of electromagnetic method for hidden danger of water gushing at coal face 被引量:2
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作者 SHI Xian-xin YAN Shu +1 位作者 CHEN Ming-sheng FU Jun-mei 《Journal of Coal Science & Engineering(China)》 2009年第2期197-205,共9页
The principles, methods, technologies and application effects of several electromagnetic methods for the detection of the hidden danger of water gushing at the coal face were introduced. Also, emphasis was laid on exp... The principles, methods, technologies and application effects of several electromagnetic methods for the detection of the hidden danger of water gushing at the coal face were introduced. Also, emphasis was laid on expounding the methods, principles and effects of down-hole detections by electric transmission tomography and transient electromagnetic method. The potential of point power supplied in the underground homogeneous semi-space, as well as the response to a low-resistivity abnormal body in the homogeneous semi-space, was simulated by adopting 3-D finite element method to interpret the basic theory of the electric transmission tomography. The results of actual measurement show that the mine electromagnetic method is sensitive to water-bearing low-resistivity bodies and can play a unique role in detecting the hidden danger of water gushing at the coal face. 展开更多
关键词 hidden trouble of water gushing electric transmission tomography mine transient electromagnetic method coal face high-density resistivity method 3-D finite element simulation
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Determining water well sites based on electrical structure in Taobei District of Baicheng 被引量:1
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作者 SHEN Xintu LIU Lijia LI Peng 《Global Geology》 2020年第3期173-179,共7页
Drilling a well randomly would lead to high uncertainties and could not meet the demand of water supply from the increasing population.It is in dire need to improve success rate of well drilling.The high-density resis... Drilling a well randomly would lead to high uncertainties and could not meet the demand of water supply from the increasing population.It is in dire need to improve success rate of well drilling.The high-density resistivity method offers us a good choice.In this study,high-density resistivity method is used for groundwater survey in five villages in the Taobei District of Baicheng.The data obtained by high-density resistivity method is inverted through Res2dinv software.It is found that the electrical structure is characterized by a horizontal layer distribution,and the resistivity shows a"high-medium low-low"feature from shallow to deep.Moreover,obvious electrical gradient zones are identified in the strata below each section,which are interpreted as tectonic weak zones,i.e.,the faults.The low-resistance anomaly areas are inferred to be favorable aquifers.The results show that high-density resistivity exploration is an efficient and practical method for determining water well sites in rural areas and can provide a guide for finding water resources in the area. 展开更多
关键词 high-density resistivity method electrical structure water well electrical gradient zone
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A Modified Back/Forward Sweep Method Based on the Electricity Consumption Data
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作者 Yanlu Huang Yan Li +2 位作者 Feng Chen Xu Zheng Jing Tang 《Energy and Power Engineering》 2017年第4期176-182,共7页
With the development of distribution automation system, the centralized meter reading system has been adopted more and more extensively, which provides real-time electricity consumption data of end-users, and conseque... With the development of distribution automation system, the centralized meter reading system has been adopted more and more extensively, which provides real-time electricity consumption data of end-users, and consequently lays foundation for operating condition on-line analysis of distribution network. In this paper, a modified back/forward sweep method, which directly uses real-time electricity consumption data acquired from the centralized meter reading system, is proposedto realize voltage analysis based on 24-hour electricity consumption data of a typical transformer district. Furthermore, the calculated line losses are verified through data collected from the energy metering of the distribution transformer, illustrating that the proposed method can be applied in analyzing voltage level and discovering unknown energy losses, which will lay foundation for on-line analysis, calculation and monitoring of power distribution network. 展开更多
关键词 LOW-VOLTAGE distribution Network Back/Forward SWEEP method electrICITY CONSUMPTION DATA On-Line Analysis and Calculation
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Methods and Techniques of Electricity Thieving in Pakistan
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作者 Zahoor Hussain Shahzad Memon +2 位作者 Razahussain Shah Zulfiqar Ali Bhutto Mahmoud Aljawarneh 《Journal of Power and Energy Engineering》 2016年第9期1-10,共10页
The situation of electricity in Pakistan has been alarming from the last ten years. The deficiency in electricity has not only obstructed the business activities but also affected the domestic consumers, educational i... The situation of electricity in Pakistan has been alarming from the last ten years. The deficiency in electricity has not only obstructed the business activities but also affected the domestic consumers, educational institutes and hospitals. Usually electrical power companies are liable for electricity shortfall and power interruption. However, electricity end consumers are also equally responsible behind strange shortfall and unusual power interruption. Frequently, the consumers use the heavy electrical equipment in their homes including heaters, geysers, irons and water motors which causes the more electricity consumption, load shedding and huge amount of bills. For escaping the huge amount of electricity bill, the consumers commit the illegal and unethical connections. The illegal usage of electrical power failed the power companies to plan schedule load shedding accordingly and the other side the damaged electricity wires or Pole Mount Transformer increased faults due to overburdening, which directly affected on extend power interruption. In addition that, responsible teams of electrical power companies cannot reach instantly to repair faults and prevent the theft. Electricity thieving is social crime committed by the consumers or meter readers which causes the electricity strange shortfall within country. This paper presents the practical demonstration about the common energy theft methods and techniques done by electricity consumers within their home and residential building. In Pakistan EPC (electrical power companies) deploy the traditional electromechanical meters for electricity consumption measurements, however, these meters do not have any real time communication. Therefore there are many easy ways to manipulate the meter reading as well as internal structural of metering system. 展开更多
关键词 electromechanical Meter Technical and Non-Technical Losses electrical Panel Board electrical Power distribution Mechanism Power Losses method and Techniques
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Boundary Estimation in Annular Two-Phase Flow Using Electrical Impedance Tomography with Particle Swarm Optimization
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作者 Rongli Wang 《Modern Electronic Technology》 2019年第1期15-19,共5页
In this study we consider the boundary estimation of annular two-phase flow in a pipe with the potential distribution on the electrodes mounted on the outer boundary of the pipe, by taking use of electrical impedance ... In this study we consider the boundary estimation of annular two-phase flow in a pipe with the potential distribution on the electrodes mounted on the outer boundary of the pipe, by taking use of electrical impedance tomography (EIT) technique with the numerical solution obtained from an improved boundary distributed source (IBDS) method. The particle swarm optimization (PSO) is used to iteratively seek the boundary configuration. The simulation results showed that PSO and EIT technique with numerical solution obtained from IBDS has been successfully applied to the monitoring of an annular two-phase flow. 展开更多
关键词 electrical impedance tomography MESHLESS method Improved BOUNDARY distributed source method Particle SWARM optimization ANNULAR TWO-PHASE flow
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氢电-锂电通勤飞机分布式推进系统匹配设计 被引量:1
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作者 王宇 伍庭佳 +1 位作者 李湘 余雄庆 《中国机械工程》 EI CAS CSCD 北大核心 2024年第1期27-35,共9页
针对通勤类飞机总体设计参数和飞行任务剖面需求,根据氢电-锂电推进系统架构方案,提出了推进系统参数匹配方法和能源动态平衡管理策略。以19座级通勤飞机作为验证对象,对其动力装置和储备能源进行了选型和管理研究。根据选型的分布式推... 针对通勤类飞机总体设计参数和飞行任务剖面需求,根据氢电-锂电推进系统架构方案,提出了推进系统参数匹配方法和能源动态平衡管理策略。以19座级通勤飞机作为验证对象,对其动力装置和储备能源进行了选型和管理研究。根据选型的分布式推进气动布局方案,进一步采用全析因试验设计方法分析了螺旋桨转向对飞机气动特性的影响,获得了有利于飞机巡航状态的螺旋桨转向配置方案。 展开更多
关键词 通勤类飞机 燃料电池 参数匹配方法 分布式电推进
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基于RPC的光储接入牵引供电系统协调控制方法 被引量:1
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作者 陈维荣 王小雨 +4 位作者 韩莹 臧治 李奇 沈文杰 许程鹏 《西南交通大学学报》 EI CSCD 北大核心 2024年第1期1-10,共10页
为将光伏发电接入牵引供电系统进行有效利用,同时兼顾牵引供电系统电能质量改善及列车再生制动能量回收利用,提出了一种基于铁路功率调节器的光储系统接入牵引供电系统的协调控制方法.首先,搭建基于铁路功率调节器的光储系统接入牵引供... 为将光伏发电接入牵引供电系统进行有效利用,同时兼顾牵引供电系统电能质量改善及列车再生制动能量回收利用,提出了一种基于铁路功率调节器的光储系统接入牵引供电系统的协调控制方法.首先,搭建基于铁路功率调节器的光储系统接入牵引供电拓扑结构,并对其电能质量补偿机理进行理论分析;在此基础上,充分考虑光储系统的运行条件以及列车牵引、制动、空载或惰行工况,提出光储系统接入牵引供电的联合协调控制方法,实现了“光+储+荷”三者间的协调控制、牵引供电系统负序的动态补偿以及谐波的有效抑制;在RT-Lab实时仿真系统中建立了基于铁路功率调节器的光伏接入牵引供电系统仿真模型,并结合实际光照和牵引工况数据验证本文所提出的系统结构以及协调控制方法的有效性.结果表明:本文所提出的系统结构以及协调控制方法能够实现牵引供电系统中光储系统的有效接入,再生制动能量回收率提升至86.7%,功率因数提升6.4%,对谐波特别是高次谐波含有率有较大改善,满足光伏电能高效消纳及综合利用、电能质量动态综合补偿、再生制动能量回收多重需求. 展开更多
关键词 铁路功率调节器 光储发电系统 牵引供电系统 协调控制方法 电能质量 电能分配
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考虑异步通信的配电-气网分布式有功-无功协同优化
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作者 陈厚合 高康静 +2 位作者 张儒峰 姜涛 闫克非 《电力系统自动化》 EI CSCD 北大核心 2024年第20期69-80,共12页
配电-气网(EGDN)中新能源大量并网和燃气运输过程中管网压力变化均可能导致配电网的电压波动增大。文中提出一种考虑异步通信的EGDN有功-无功协同优化方法。首先,研究EGDN中各元件的有功-无功特性;其次,根据EGDN能量运输过程中无功需求... 配电-气网(EGDN)中新能源大量并网和燃气运输过程中管网压力变化均可能导致配电网的电压波动增大。文中提出一种考虑异步通信的EGDN有功-无功协同优化方法。首先,研究EGDN中各元件的有功-无功特性;其次,根据EGDN能量运输过程中无功需求特性,建立EGDN无功供需模型;然后,考虑EGDN无功平衡和网络运行约束,以最小化电网电压波动、网损和EGDN购电/气成本为目标,建立EGDN无功电压优化控制模型;最后,为保障EGDN中各能源主体信息的安全性与私密性,考虑配电网与配气网信息采集传输情况存在差异,可能存在通信延迟和信息丢包情况,采用异步交替方向乘子法对模型进行求解。通过对改进的IEEE 33节点系统和7节点配气网构成的EGDN系统进行仿真,结果表明,所提方法可有效缓解EGDN电压波动问题,减小网损并降低系统总运行成本。 展开更多
关键词 配电-气网 无功电压优化 异步通信 交替方向乘子法
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含电动汽车的主动配电网多目标分层优化调度
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作者 杨晓辉 王晓鹏 邓叶恒 《电力工程技术》 北大核心 2024年第4期156-165,共10页
为了协调电动汽车车主和主动配电网2个不同主体之间的利益关系,针对电动汽车接入后主动配电网的优化调度问题,文中提出一种考虑电动汽车充电综合满意度和主动配电网运行效益的多目标分层优化方法。上层模型注重最大化电动汽车车主的充... 为了协调电动汽车车主和主动配电网2个不同主体之间的利益关系,针对电动汽车接入后主动配电网的优化调度问题,文中提出一种考虑电动汽车充电综合满意度和主动配电网运行效益的多目标分层优化方法。上层模型注重最大化电动汽车车主的充电利益,采用归一化法向约束法求解电动汽车的最优充放电计划,并将其输入下层优化模型。下层模型旨在最大化主动配电网的运行效益,根据电动汽车的充放电计划调整可控分布式电源的输出功率,采用二阶锥松弛转换法和带权极小模理想点法求解该非线性多目标问题。仿真结果表明,所提含电动汽车的主动配电网多目标分层优化方法能够在促使电动汽车充电综合满意度超过0.9的同时,减少有功网损约94.12%、运行成本约30.90%,实现电动汽车车主和主动配电网的双赢。 展开更多
关键词 电动汽车 主动配电网 分层优化 多目标优化 归一化法向约束法 带权极小模理想点法 二阶锥松弛转化法
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基于改进交替方向乘子法的电-气综合能源系统优化调度 被引量:2
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作者 罗清局 朱继忠 《电工技术学报》 EI CSCD 北大核心 2024年第9期2797-2809,共13页
在电-气综合能源系统分布式优化调度中,非线性非凸的Weymouth方程给问题求解带来了巨大挑战。一方面,目前许多研究采用二阶锥松弛Weymouth方程,较为复杂;另一方面,主流分布式算法即交替方向乘子法(ADMM)的计算效率并不高。对此,该文提... 在电-气综合能源系统分布式优化调度中,非线性非凸的Weymouth方程给问题求解带来了巨大挑战。一方面,目前许多研究采用二阶锥松弛Weymouth方程,较为复杂;另一方面,主流分布式算法即交替方向乘子法(ADMM)的计算效率并不高。对此,该文提出一种精确近似的Weymouth方程线性化模型和多参数规划改进ADMM算法以解决上述两个问题。Weymouth方程线性化模型基于泰勒展开,利用一簇切线松弛Weymouth方程。特别地,增加了惩罚项以收紧松弛间隙,通过变量替换的方法减少切线的数量,并给出了一种有效的切线选取方法。对于多参数规划改进ADMM算法,其通过多参数规划得到子问题最优解的解析式。迭代过程中,若参数落在临界域内,可直接将参数代入最优解解析式获得子问题的最优解,无需求解子问题,提高了迭代速度。此外,该文还对多参数规划中难以避免的退化问题进行了处理,提升了算法的通用性。最后在两个不同规模的系统中验证了Weymouth方程线性化模型的精确性和多参数规划改进ADMM算法的高效性。 展开更多
关键词 电-气综合能源系统 分布式优化调度 Weymouth方程线性化 多参数规划 交替方向乘子法
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一种考虑峰荷-电量分摊机制和风电关键场景的输-配电网协同调度策略
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作者 涂青宇 苗世洪 +2 位作者 杨志豪 姚福星 林毓军 《中国电机工程学报》 EI CSCD 北大核心 2024年第2期597-609,I0013,共14页
风电功率的不确定性问题严重制约其消纳,因此,激发输-配电网积极性并提出合理的风电协同消纳方法具有重要意义。在建立改进峰荷-电量责任模型的基础上,提出一种基于场景法的输-配电网多目标协同调度模型。首先,将传统输-配电网峰荷责任... 风电功率的不确定性问题严重制约其消纳,因此,激发输-配电网积极性并提出合理的风电协同消纳方法具有重要意义。在建立改进峰荷-电量责任模型的基础上,提出一种基于场景法的输-配电网多目标协同调度模型。首先,将传统输-配电网峰荷责任模型、电量责任模型相结合,同时计入风电消纳、需求响应的影响并引入输配电成本分摊机制,建立改进输-配电网峰荷-电量责任模型。其次,针对输-配电网集中式和分布式风电出力的不确定性问题,基于风电功率日前基础预测场景和奇、偶时刻的极限爬坡场景构建关键风电场景集,并在此基础上提出输-配电网柔性资源协同调度策略。然后,将输-配电网改进峰荷-电量责任模型和柔性资源协同调度策略相结合,建立输-配多目标协同优化模型。最后,基于典型T6D2系统进行案例仿真,采用目标级联分析法对所提模型进行求解。结果表明,所提模型有利于支撑并促进输-配电网提升风电消纳水平,而峰荷-电量责任的边际效应有助于输-配电网有序制定对应责任权重,从而实现经济效益、风电消纳和社会效益的合理均衡。 展开更多
关键词 峰荷-电量责任 输-配电网 多目标优化 风电消纳 场景法
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一种分布式电推进飞机的多学科参数快速估计方法
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作者 于昊亮 雷涛 +1 位作者 张星雨 张晓斌 《航空科学技术》 2024年第1期65-74,共10页
由于分布式电推进飞机综合性能显著,各个学科的交叉性强,是未来航空领域飞行器发展的趋势,因此建立一种适用于总体设计阶段的多学科参数评估方法对分布式电推进飞机的设计有着重大的意义。为了提高电动飞机在初始设计阶段的效率,本文提... 由于分布式电推进飞机综合性能显著,各个学科的交叉性强,是未来航空领域飞行器发展的趋势,因此建立一种适用于总体设计阶段的多学科参数评估方法对分布式电推进飞机的设计有着重大的意义。为了提高电动飞机在初始设计阶段的效率,本文提出了一种分布式电推进飞机的多学科参数快速估计方法。该方法对分布式电推进飞机进行总体建模并搭建能源系统框架,使用基于势流理论的简化气动分析方法对螺旋桨与机翼的气动—推进耦合特性进行分析。经仿真验证,该简化气动模型可以较好地模拟螺旋桨与机翼的气动—推进耦合特性。利用该方法在设定的飞行剖面下对某分布式电推进飞机进行多学科参数快速估计,得到了整个飞行剖面下的飞机气动性能变化及电推进系统的性能变化,为分布式电推进飞机的总体设计提供了支撑。 展开更多
关键词 分布式电推进 多学科分析 电力推进技术 涡格法 螺旋桨滑流
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考虑电动汽车负载的配电网重构策略
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作者 王西蒙 郭正阳 +2 位作者 周辰罡 吴丘驰 卞海红 《南京工程学院学报(自然科学版)》 2024年第2期83-90,共8页
随着电动汽车的普及,其充电负载对城市配电网的影响日益显著,为降低电动汽车聚集充电行为造成的瞬时高功率、高负载影响,采用一种基于蒙特卡洛法考虑电动汽车负载的配电网重构方法.通过建立城市交通路网模型,以汽车出行链理论为基础,采... 随着电动汽车的普及,其充电负载对城市配电网的影响日益显著,为降低电动汽车聚集充电行为造成的瞬时高功率、高负载影响,采用一种基于蒙特卡洛法考虑电动汽车负载的配电网重构方法.通过建立城市交通路网模型,以汽车出行链理论为基础,采用蒙特卡洛法建立电动汽车时空负荷预测模型,计算典型日电动汽车多时段充电负载.基于粒子群优化算法对该地区配电网进行拓扑重构,降低配电网有功损耗,提高电能质量.以IEEE 33节点配电网为例进行仿真验证.由仿真结果可知,该方法可以缓解电动汽车充电行为对城市配电网造成的影响,且城市配电网有功损耗降低40%以上,优化效果良好. 展开更多
关键词 电动汽车 蒙特卡洛法 配电网重构
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电力机车分布式校线系统及其应用研究 被引量:1
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作者 成本权 崔桂程 宋明远 《电力机车与城轨车辆》 2024年第2期78-81,共4页
针对电力机车校线周期长、手动测试难以满足复杂回路测试要求等问题,文章介绍了一套电力机车分布式校线系统,基于该校线系统设计原理提出了自学习线缆测试法及连接器库建立方法。该系统的应用提高了电力机车校线的效率和准确性,同时增... 针对电力机车校线周期长、手动测试难以满足复杂回路测试要求等问题,文章介绍了一套电力机车分布式校线系统,基于该校线系统设计原理提出了自学习线缆测试法及连接器库建立方法。该系统的应用提高了电力机车校线的效率和准确性,同时增加了试验的可追溯性。 展开更多
关键词 电力机车 分布式校线系统 连接器 自学习测试法
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