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2010 IEEE Industry Applications Society Annual Meeting最新文献

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Fast Discharge Mechanism for Ring Motors in Gearless Draglines 无齿轮拖绳环形电机快速放电机构
Pub Date : 2010-11-01 DOI: 10.1109/IAS.2010.5615621
J. Mazumdar
In the case of high power applications, or where the machine ratings are in the MW range e.g. mining applications using a AC gearless dragline etc. the level of these currents is extremely high, of the order of 100's of amps. Such high currents result in huge amount of energy stored in the inductor, which is difficult to dissipate quickly through a small resistance since the time constant given by L/R, for such systems would be too high. Also, if dealing with high power applications, the energy stored in such fields is so high, that dissipating it results in excessive heating ambient and consequently requires additional cooling for the complete system. If instead of dissipating this energy, it is efficiently stored, then in theory it can be used as a backup supply in case of a fault in the system. Traditionally circuit breakers are used to isolate such machines in cases of faults. This paper attempts to provide an alternate method for discharging the field circuit by eliminating the use of circuit breakers. The technique is solely based on high power solid state devices.
在高功率应用的情况下,或者机器额定值在MW范围内,例如使用交流无齿轮拖缆的采矿应用等,这些电流的水平非常高,约为100安培。如此大的电流导致电感中存储了大量的能量,由于L/R给出的时间常数太高,很难通过小的电阻迅速消散。此外,如果处理高功率应用,储存在这些领域的能量是如此之高,以至于耗散它会导致环境过度加热,从而需要为整个系统额外冷却。如果这些能量不是被耗散,而是被有效地储存起来,那么理论上它就可以在系统出现故障时用作备用电源。传统上,断路器用于在发生故障时隔离此类机器。本文试图通过消除断路器的使用,为放电场电路提供一种替代方法。该技术完全基于高功率固态器件。
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引用次数: 2
Development and Field Test of Movable Conduction-Cooled High Temperature SMES 可移动导冷式高温SMES的研制与现场试验
Pub Date : 2010-11-01 DOI: 10.1109/IAS.2010.5614527
Jiakun Fang, Haishun Sun, L. Ren, J. Wen, Weijen Lee, Youping Xu, Xiaotao Peng
With the large scale renewable energy being put into utility power system, the active power imbalance becomes one of the major problems. The novel power system stabilizer (PSS) based on energy storage system (ESS) seems to be a potential solution to mitigate fluctuation of both power generation and consumption. Superconducting magnetic energy storage system (SMES) is getting increasing acceptance in various applications of power system for higher efficiency and faster response than other ES devices. This paper introduces the development of a movable conduction-cooled high temperature SMES module as potential energy storage system. For utility power system use, the developed SMES system is with the feature of movable, high temperature superconducting (HTS) and conduction cool. Laboratory experiments including operational characteristics and improvement of power system stability have been carried out. Field experiments have also been carried out in Laohukou hydro power plant in Hubei province of China. Results of both laboratorial and field tests demonstrate the well design and manufacture of the developed movable SMES module.
随着可再生能源大规模投入公用电力系统,有功功率失衡问题日益突出。基于储能系统(ESS)的新型电力系统稳定器(PSS)似乎是缓解发电和用电波动的潜在解决方案。超导磁储能系统由于具有比其他ES器件更高的效率和更快的响应速度,在电力系统的各种应用中得到越来越多的认可。本文介绍了一种可移动的电导冷却高温SMES模块作为潜在储能系统的研制。在公用电力系统中,开发的中小企业系统具有可移动、高温超导和传导冷却的特点。进行了运行特性和提高电力系统稳定性的室内实验。在中国湖北省老壶口水电站也进行了田间试验。实验和现场试验结果表明,所开发的可移动SMES模块的设计和制造效果良好。
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引用次数: 1
An Energy Management System for Building Structures Using a Multi-Agent Decision-Making Control Methodology 基于多智能体决策控制方法的建筑结构能源管理系统
Pub Date : 2010-11-01 DOI: 10.1109/IAS.2010.5615412
Peng Zhao, S. Suryanarayanan, Marcelo Simoes
Aligned towards net zero energy building goals, building energy management systems will consider energy utilization efficiency improvement, energy cost reduction and renewable energy technology utilization to serve the local energy loads in building structures with dispersed resources. The distributed management of building energy system in this paper describes a semi-centralized decision making methodology using multi-agent systems for building energy management system in electrical, heating and cooling energy zones with combined heat and power system optimization aimed at improving energy efficiency and reducing energy cost. The semi-centralized decision making process will be implemented in a case study to pursue minimum energy cost.
为了实现零能耗建筑目标,建筑能源管理系统将考虑提高能源利用效率、降低能源成本和利用可再生能源技术,以满足资源分散的建筑结构的本地能源负荷。本文介绍了一种基于多智能体系统的建筑能源管理系统的半集中式决策方法,用于电气、供暖和制冷能源区,以提高能源效率和降低能源成本为目标,进行热电联产系统优化。半集中式决策过程将在一个案例研究中实施,以追求最低的能源成本。
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引用次数: 253
Different Factors Affecting Short Circuit Behavior of a Wind Power Plant 影响风电场短路行为的不同因素
Pub Date : 2010-11-01 DOI: 10.1109/IAS.2010.5616819
E. Muljadi, N. Samaan, V. Gevorgian, Jun Yu Li, S. Pasupulati
A wind power plant consists of a large number of turbines interconnected by underground cable. A pad-mount transformer at each turbine steps up the voltage from generating voltage (690 V) to a medium voltage (34.5 kV). All turbines in the plant are connected to the substation transformer where the voltage is stepped up to the transmission level. An important aspect of wind power plant (WPP) impact studies is to evaluate the short-circuit (SC) current contribution of the plant into the transmission network under different fault conditions. This task can be challenging to protection engineers due to the topology differences between different types of wind turbine generators (WTGs) and the conventional generating units. This paper investigates the short circuit behavior of a wind power plant for different types of faults. The impact of wind turbine types, the transformer configuration, and the reactive compensation capacitor will be investigated. The voltage response at different buses will be observed. Finally, the SC line currents will be presented along with its symmetrical components
风力发电厂由大量的涡轮机组成,通过地下电缆相互连接。每个涡轮机上的垫式变压器将电压从发电电压(690 V)提升到中压(34.5 kV)。工厂中的所有涡轮机都连接到变电站变压器,在那里电压上升到传输电平。风电场影响研究的一个重要方面是评估风电场在不同故障条件下对输电网的短路电流贡献。由于不同类型的风力发电机(wtg)和传统发电机组之间的拓扑结构差异,这项任务对保护工程师来说是具有挑战性的。本文研究了风电场在不同故障类型下的短路行为。将研究风力涡轮机类型、变压器配置和无功补偿电容器的影响。将观察不同母线的电压响应。最后,SC线电流将与其对称分量一起呈现
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引用次数: 60
Fault Detection in a Current Controlled PM Drive Using Back-EMF Estimation and Residual Analysis 基于反电动势估计和残差分析的电流控制永磁驱动器故障检测
Pub Date : 2010-11-01 DOI: 10.1109/IAS.2010.5616894
N. Leboeuf, T. Boileau, B. Nahid-Mobarakeh, F. Meibody-Tabar
In this paper, a new technique for on-line detecting inter-turn stator winding fault in Permanent Magnet Synchronous Machine (PMSM) is presented. It is based on a residual analysis improved by adding a back-EMF waveform estimation system which allows identifying real back-EMF frequency components of the healthy machine. Then, a simple current residual monitoring permits us to detect the fault and its severity. Simulations and experimentations validate the proposed method and its efficiency.
提出了一种在线检测永磁同步电机定子绕组匝间故障的新方法。它基于残差分析,通过添加反电动势波形估计系统进行改进,该系统允许识别健康机器的真实反电动势频率成分。然后,一个简单的电流剩余监测允许我们检测故障及其严重程度。仿真和实验验证了该方法的有效性。
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引用次数: 6
A New Implementation Method of Wavelet Packet Transform Differential Protection for Power Transformers 电力变压器小波包变换差动保护的一种新实现方法
Pub Date : 2010-11-01 DOI: 10.1109/IAS.2010.5616831
S. Saleh, B. Scaplen, M. Rahman
This paper presents an innovative implementation of the wavelet packet transform using Butterworth passive filters for differential protection of power transformers. The proposed implementation is based on designing cascaded stages of high pass 3$^{rd}$ order Butterworth filters with cut-off frequencies identical to the cut-off frequencies of wavelet packet transform associated digital quadrature mirror filters. These high pass filters are designed to extract the second level high frequency components present in the three-phase differential currents. The extraction of these frequency components is required in order to detect and classify transients in three-phase power transformers. The output of the designed Butterworth high pass filters is utilized to initiate a trip signal in case of internal fault currents. The 3$^{rd}$ order Butterworth high pass filters are designed to simplify their practical implementation as well as their integration with the differential protective relay for the tested power transformer. Different magnetizing inrush, through-fault and internal fault currents are investigated for different loading conditions. Performances of the proposed Butterworth passive filter-based differential relay are compared with those of the digital wavelet packet transform-based relay. Comparison results show that the Butterworth filter wavelet packet transform-based differential relay is able to provide a low cost good diagnosis and fast responses to internal fault currents.
本文提出了一种利用巴特沃斯无源滤波器实现小波包变换的新方法,用于电力变压器差动保护。所提出的实现是基于设计3$^{rd}$阶巴特沃斯滤波器的级联级,其截止频率与小波包变换相关的数字正交镜像滤波器的截止频率相同。这些高通滤波器设计用于提取存在于三相差动电流中的二级高频分量。为了检测和分类三相电力变压器的暂态,需要提取这些频率分量。所设计的巴特沃斯高通滤波器的输出用于在内部故障电流的情况下启动跳闸信号。3$^{rd}$阶巴特沃斯高通滤波器旨在简化其实际实现以及与被测电力变压器的差动保护继电器的集成。在不同的负载条件下,研究了不同的励磁涌流、通过故障电流和内部故障电流。将基于巴特沃斯无源滤波器的差动继电器与基于数字小波包变换的差动继电器的性能进行了比较。对比结果表明,基于巴特沃斯滤波小波包变换的差动继电器能够对内部故障电流提供低成本、良好的诊断和快速响应。
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引用次数: 80
Designing Harmonic Filters for an Aluminum Smelting Plant 某铝厂谐波滤波器的设计
Pub Date : 2010-11-01 DOI: 10.1109/IAS.2010.5614646
B. Badrzadeh, K. Smith, Roddy C. Wilson
This paper presents the results of harmonic analysis and harmonic filter design for a grid connected aluminum smelting plant. Harmonic analysis studies are carried out to detect the system resonance frequencies and determine individual and total harmonic voltage distortion for a wide range of possible system operating conditions including scenarios with N-1 and N-2 generation, an outage of a harmonic filter, and an outage of a rectifier transformer. A conceptual harmonic filter design procedure for the filters required for the smelting plant is presented. The suitability and robustness of the proposed harmonic filter configuration in terms of the filter's components current and voltage ratings, and corresponding r.m.s. values is investigated.
本文介绍了某并网铝厂的谐波分析和谐波滤波器的设计结果。进行谐波分析研究是为了检测系统谐振频率,并确定各种可能的系统运行条件下的单个和总谐波电压畸变,包括N-1和N-2发电、谐波滤波器停电和整流变压器停电的情况。介绍了冶炼厂所需滤波器的谐波滤波器概念设计过程。从滤波器元件的额定电流和额定电压以及相应的均方根值等方面研究了所提出的谐波滤波器结构的适用性和鲁棒性。
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引用次数: 0
A Conjugate Gradient Method for the Solution of the Inverse Heating Problem in Thermoforming 求解热成形反加热问题的共轭梯度法
Pub Date : 2010-11-01 DOI: 10.1109/IAS.2010.5615349
M. Chy, B. Boulet
Finding the setpoints of heater temperatures such that the sheet will achieve the desired temperature at the end of the heating cycle is known as the inverse heating problem (IHP) in thermoforming. Although a major portion of the heat is transferred from the oven to the sheet by radiation, conduction and convection also have a significant contribution in sheet heating. This makes the inverse heating problem more complex. In addition, the IHP is often ill-posed in a thermoforming process, making the solution unstable. In this paper, a conjugate gradient method is used to solve the IHP in the control of sheet temperature. In developing the method, computational cost is considered such that it can be implemented as a real-time algorithm in the controller. The performance of the proposed method for solving IHP, and thereby the corresponding sheet temperature controller, are tested in simulation at different operating conditions and compared with the conventional method of solving IHP based on the pseudo-inverse of the view factor matrix. The efficiency of the proposed method for the estimation of heater setpoints and the accuracy of the controller are evidenced by the results, showing promise for prospective real-time applications.
找到加热器温度的设定值,使板材在加热循环结束时达到所需的温度,这被称为热成型中的逆加热问题(IHP)。虽然大部分热量是通过辐射从烤箱传递到薄板的,但传导和对流在薄板加热中也有重要贡献。这使得逆加热问题更加复杂。此外,在热成型过程中,IHP通常是病态的,使得溶液不稳定。本文采用共轭梯度法求解薄板温度控制中的IHP问题。在开发该方法时,考虑了计算成本,使其可以作为控制器中的实时算法实现。通过不同工况下的仿真测试,验证了该方法的性能,并与传统的基于视因子矩阵伪逆的求解方法进行了比较。结果证明了所提出的加热器设定值估计方法的有效性和控制器的准确性,显示了潜在的实时应用前景。
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引用次数: 5
Frequency Analysis of Experimental Waveforms for DC Motors in Digging Applications 挖掘用直流电机实验波形的频率分析
Pub Date : 2010-11-01 DOI: 10.1109/IAS.2010.5615651
G. Mirzaeva, J. Welsh, T. Summers, R. Betz
This paper refers to a "DC Motor Duty Meter" project which aims to develop a comprehensive condition monitoring tool for DC motors used in mining excavators. The paper presents experimental waveforms measured internally and externally to the motor at different rotation velocities. The paper focuses on analysis of these waveforms both in time and frequency domains. The findings of the analysis are discussed in relation to the motor performance and commutation quality.
“直流电机占空表”项目旨在开发一种矿用挖掘机直流电机的综合状态监测工具。本文给出了在不同转速下对电机进行内部和外部测量的实验波形。本文着重对这些波形进行时域和频域分析。分析结果与电机性能和换相质量有关。
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引用次数: 2
Sensorless Power Maximization of PMSG Based Isolated Wind-Battery Hybrid System Using Adaptive Neuro-Fuzzy Controller 基于自适应神经模糊控制器的PMSG孤立风-电池混合系统无传感器功率最大化
Pub Date : 2010-11-01 DOI: 10.1109/IAS.2010.5615370
Mukhtiar Singh, A. Chandra, Bhim Singh
This paper presents a novel Adaptive Network-Based Fuzzy Inference System(ANFIS) for the optimal control of permanent magnet synchronous generator (PMSG) to extract maximum power without the need of speed & position sensors or any complex estimating algorithm. The control algorithm determines the optimal value of torque controlling current component as a function of change in output power. The error between the optimal values of torque current and actual current is utilized to train the ANFIS structure using error back propagation method. In the proposed work, an isolated wind-battery hybrid system is considered, where a boost chopper is used to control the PMSG. A buck-boost converter is used to maintain constant DC-Link voltage and to interface an efficient battery energy storage system (BESS) in order to meet fluctuating load demand under varying wind conditions. The proposed strategy is realized and simulated in MATLAB/SPS environment. The simulation results under dynamic operating conditions are provided to demonstrate the effectiveness of proposed strategy.
本文提出了一种新的基于自适应网络的模糊推理系统(ANFIS),用于永磁同步发电机(PMSG)的最优控制,不需要速度和位置传感器或任何复杂的估计算法来提取最大功率。控制算法根据输出功率的变化确定转矩控制电流分量的最优值。利用转矩电流最优值与实际电流之间的误差,采用误差反向传播法对ANFIS结构进行训练。本文研究了一种孤立风-电池混合系统,该系统采用升压斩波器控制PMSG。buck-boost变换器用于保持恒定的DC-Link电压,并与高效的电池储能系统(BESS)连接,以满足不同风力条件下的波动负荷需求。在MATLAB/SPS环境下对该策略进行了实现和仿真。动态工况下的仿真结果验证了所提策略的有效性。
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引用次数: 19
期刊
2010 IEEE Industry Applications Society Annual Meeting
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