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2016 IEEE Industry Applications Society Annual Meeting最新文献

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Evaluation of voltage drop in harbor electrical distribution systems with high voltage shore connection 高压岸接港口配电系统的电压降评估
Pub Date : 2016-10-01 DOI: 10.1109/IAS.2016.7731940
C. Su, Yung-Chi Lee, Min-Hung Chou, Hai-Ming Chin, G. Parise, P. Chavdarian
For a variety of reasons, it is becoming an increasingly common requirement for ships to shut down ship generators and connect to high voltage shore power for as long as practicable while in port. Ship electrical equipment shall only be connected to shore supplies that are able to maintain harbor distribution system voltage quality. Voltage drop, which is produced by the possible loading conditions of a ship when connected to a shore supply, may result in unsatisfactory operation of, and damage to, electrical and electronic equipment on board and thus, must be considered in the harbor distribution system design in order to comply with the requirements of international standards. A simple and fast method able to estimate the expected magnitude of voltage drops and provide information about the effectiveness of the various mitigation methods is essential. This paper presents the methodology and results for evaluation of the voltage drops of a practical harbor electrical distribution system with high voltage shore connection (HVSC). The potential voltage drops of the implemented HVSC are quantified using standard analytical formulas. Sensitivity analysis is performed to determine the critical parameters that significantly affect voltage drops. The parameters that have great improvement benefits should have high priority for implementation in other distribution systems with HVSC. The results obtained in this paper can provide engineers with useful information regarding the actual magnitude of voltage drops, as well as on the effectiveness of mitigation options for voltage drops, which would greatly enhance HV shore supply quality.
由于各种原因,船舶在港口期间关闭船用发电机并尽可能长时间地连接高压岸电已成为一种越来越普遍的要求。船舶电气设备只应连接到能够保持港口配电系统电压质量的岸上电源。电压降是由船舶连接岸上电源时可能的负载条件产生的,可能导致船上电气和电子设备的运行不满意和损坏,因此必须在港口配电系统设计中考虑,以符合国际标准的要求。必须有一种简单、快速的方法,能够估计电压降的预期幅度,并提供有关各种缓解方法有效性的信息。本文介绍了一个实际港口高压岸接配电系统的电压降评估方法和结果。采用标准解析公式对所实现的高压超导系统的电压降进行了量化。进行灵敏度分析以确定显著影响电压降的关键参数。对于具有较大改进效益的参数,应优先考虑在其他具有HVSC的配电系统中实施。本文获得的结果可以为工程师提供有关电压降实际大小的有用信息,以及电压降缓解方案的有效性,这将大大提高高压岸上供电质量。
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引用次数: 4
A sinusoidal charging strategy for battery energy storage systems use in light electric vehicles 轻型电动汽车电池储能系统的正弦充电策略
Pub Date : 2016-10-01 DOI: 10.1109/IAS.2016.7731822
Y. Chuang, H. Chuang, Jyun-Han Wu
This work develops a novel sinusoidal charging strategy for use in light electric vehicles (LEVs). To generate a sinusoidal charging current, the switching frequency of the series-resonant converter is less than half of the resonant frequency. Thus, the series-resonant converter is operated in discontinuous current mode (DCM) to achieve the zero-current-switching (ZCS) condition. As a result, high energy conversion is ensured. Novel sinusoidal charging topologies with a simple structure, low cost, easy control, and high efficiency are presented for the battery energy storage systems (BESSs) of LEVs. The operating principles and design procedure of the novel sinusoidal charger circuits will be analyzed in detail. The optimal properties of the resonant components are derived from the novel sinusoidal charger circuit configuration. Simulation and experimental results are obtained for a laboratory prototype and demonstrate the feasibility of the proposed strategy. Finally, prototypes of the novel sinusoidal charger circuit that is designed for LEVs with a 48V-12Ah lead-acid BESS are constructed and tested to confirm the theoretical predictions. The maximum charging efficiency of the charging period is 95.95%. Experimental results reveal the satisfactory performance of the novel high-frequency sine-wave charging strategy, which is particular appropriate for BESSs in LEVs.
这项工作开发了一种用于轻型电动汽车(lev)的新型正弦充电策略。为了产生正弦充电电流,串联谐振变换器的开关频率小于谐振频率的一半。因此,串联谐振变换器工作在断续电流模式(DCM)下,实现零电流开关(ZCS)状态。因此,保证了高能量转换。提出了一种结构简单、成本低、易于控制、效率高等正弦充电拓扑结构。详细分析了新型正弦充电电路的工作原理和设计过程。谐振元件的最佳性能来源于新型正弦充电电路结构。在实验室样机上进行了仿真和实验,验证了该策略的可行性。最后,构建了用于具有48V-12Ah铅酸BESS的lev的新型正弦充电电路原型,并对其进行了测试,以验证理论预测。充电周期的最大充电效率为95.95%。实验结果表明,新型高频正弦波充电策略具有良好的性能,特别适用于低电压车辆的bess充电。
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引用次数: 2
Reduced order state observer based feedback control methodologies for doubly fed induction generator (DFIG) 基于降阶状态观测器的双馈感应发电机反馈控制方法
Pub Date : 2016-10-01 DOI: 10.1109/IAS.2016.7731888
Rojan Bhattarai, Niroj Gurung, S. Kamalasadan
In this paper, a reduced order state observer for DFIG is designed that estimate the states with just using DFIG's stator voltage and power measurements. Further, the proposed state observer is used to provide two control strategies for Rotor Side Converter (RSC) of DFIG a) state estimator based state feedback control and b) state estimator based vector control. The state observer and controllers were tested for varying wind conditions using a full order dynamic model of DFIG with a real-time simulation platform. The results verify that the proposed state observer can augment existing control for DFIG with better tracking of the system output without the need for feedback measurements, and at the same time it can reduce the controller design complexity. Also, these state estimator based controllers eliminate the need of rotor current sensors for DFIG control.
本文设计了一种降阶的DFIG状态观测器,仅利用DFIG定子电压和功率的测量值来估计系统的状态。进一步,利用所提出的状态观测器为DFIG转子侧变换器(RSC)提供了两种控制策略:a)基于状态估计器的状态反馈控制和b)基于状态估计器的矢量控制。利用DFIG全阶动态模型和实时仿真平台,对状态观测器和控制器进行了变风条件下的测试。结果表明,所提出的状态观测器可以在不需要反馈测量的情况下更好地跟踪系统输出,从而增强DFIG的现有控制,同时降低了控制器的设计复杂度。此外,这些基于状态估计器的控制器消除了对转子电流传感器进行DFIG控制的需要。
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引用次数: 2
A method to evaluate cycloconverters commutation robustness under voltage variations in mining distribution systems 矿用配电系统电压变化下环变流器换相鲁棒性评估方法
Pub Date : 2016-10-01 DOI: 10.1109/IAS.2016.7731929
F. Silva, L. Morán, M. Torres, C. Weishaupt
This paper analyzes the influence of frequency and voltage variation over the commutation of thyristors in high power cycloconverters. The analysis demonstrates that frequency and voltage variations can cause commutation failures generating significant damages in cycloconverters. In addition, the paper shows how to determine the maximum frequency and voltage variations that will not affect commutation between thyristors, information that can be later used for the correct setting of protection relays. The analysis is complemented with simulated results using data obtained from high power thyristors used in commercially available cycloconverters. Finally, a commutation failure in a 15 MW grinding mill cycloconverter drive is presented and analyzed.
本文分析了频率和电压变化对大功率环形变换器晶闸管换流的影响。分析表明,频率和电压的变化会导致换相失效,对环形变流器造成重大损害。此外,本文还介绍了如何确定不影响晶闸管之间换相的最大频率和电压变化,这些信息可用于稍后正确设置保护继电器。分析与模拟结果相辅相成,模拟结果使用的数据来自市售循环变换器中使用的高功率晶闸管。最后,对某15mw磨机循环变换器驱动的换相故障进行了分析。
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引用次数: 0
Reliability analysis of a novel design of pose deformation system for mobile robots through Bond Graph and Simulink 基于键合图和Simulink的移动机器人位姿变形系统可靠性分析
Pub Date : 2016-10-01 DOI: 10.1109/IAS.2016.7731854
Jingjing Cui, Yi Ren, Dezhen Yang, S. Zeng
A novel design of pose deformation system for mobile robots is presented in this paper, which transforms the position of moveable wheels by pushrods mechanism to adapt rough road conditions. A simulation method, which combined the control schemes and physical structures through the Bond Graph and Simulink, is utilized to model the pose deformation and running control process of the proposed design. Based on the model, the responses to step disturbance of the deformation control system are analyzed, then different failure modes of the pushrods are added to simulate the reliability. At last, the effectiveness of the proposed deformation system to improve reliability is verified by simulation results.
提出了一种新的移动机器人位姿变形系统设计方案,通过推杆机构对移动车轮的位置进行变换,以适应恶劣的道路条件。采用结合控制方案和物理结构的仿真方法,通过Bond Graph和Simulink对所提设计的位姿变形和运行控制过程进行建模。在此基础上,分析了变形控制系统对阶跃扰动的响应,并加入推杆的不同失效模式进行可靠性仿真。最后,通过仿真结果验证了所提出的变形系统提高可靠性的有效性。
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引用次数: 1
An optimization approach to design decentralized load frequency controllers for generators in islanded microgrids 孤岛微电网发电机分散负荷频率控制器的优化设计方法
Pub Date : 2016-10-01 DOI: 10.1109/IAS.2016.7731948
S. Azizi, S. A. Khajehoddin
In this paper, an optimal decentralized controller is designed for the load frequency control of a microgrid with multiple synchronous generation systems and renewable energy sources in the islanded mode of operation. The decentralized controller includes multiple proportional-integral (PI) controllers designed and optimized simultaneously by using a classical descent-direction Quasi-Newton based optimization technique. The optimal decentralized PI controller accounts for the dynamic coupling among the areas of the microgrid without any communication links required among the PI controllers, and hence improves the frequency control performance as compared to a set of optimal linear-quadratic Gaussian (LQG) integral controllers of eighth order which are designed independently. Simulation results confirm the effectiveness of the proposed decentralized control approach.
本文针对孤岛运行模式下具有多个同步发电系统和可再生能源的微电网的负荷频率控制问题,设计了一种最优分散控制器。分散控制器包括多个比例积分(PI)控制器,采用经典的基于下降方向的拟牛顿优化技术同时设计和优化。最优分散PI控制器考虑了微电网各区域之间的动态耦合,而PI控制器之间不需要任何通信链路,与独立设计的一组最优线性二次高斯(LQG)八阶积分控制器相比,提高了频率控制性能。仿真结果验证了所提分散控制方法的有效性。
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引用次数: 2
Use of advanced control with virtual rolling to improve the control of the threading of the tandem hot metal strip mill 采用先进的虚拟轧制控制技术,改进了热轧带钢连轧机的穿线控制
Pub Date : 2016-10-01 DOI: 10.1109/IAS.2016.7731910
J. Pittner, M. Simaan
Previously our work has investigated the use of a state dependent Riccati equation (SDRE) based method for the control of a fully threaded tandem hot metal strip mill, with highly successful results. We present in this paper the results of further work wherein the SDRE method is combined with a virtual processing technique to greatly simplify the control of the threading phase of the tandem hot strip mill. This initial work also has been highly successful, with a strong potential for extension to other industrial process.
以前,我们的工作已经研究了使用状态依赖Riccati方程(SDRE)为基础的方法来控制全螺纹串联铁水带钢轧机,并取得了非常成功的结果。我们在本文中介绍了进一步工作的结果,其中SDRE方法与虚拟加工技术相结合,大大简化了热连轧热连轧机螺纹阶段的控制。这项初步工作也非常成功,很有可能推广到其他工业过程。
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引用次数: 3
Identification of critical components in power systems: A game theory application 电力系统中关键部件的识别:博弈论的应用
Pub Date : 2016-10-01 DOI: 10.1109/IAS.2016.7731953
Farzaneh Pourahmadi, M. Fotuhi‐Firuzabad, P. Dehghanian
As the electricity market undergoes continuous evolutions, along with the outdated nature of the grid, system operators would have to be able to more effectively manage the operation costs since waves of maintenance costs and equipment investments would be anticipated in the years to come. Strategic implementation of cost-effective reliability centered maintenance (RCM) approaches seems to be a key solution. This paper proposes an efficient method to assess the component criticality for the system overall reliability and further maintenance focuses. A solution concept of game theory, called Shapely Value, that is able to fairly identify the contribution of each single equipment to the system reliability performance once a high-order contingency occurs is proposed. The suggested framework would help in realizing where investments to be made in the grid to keep a desirable system performance from the reliability standpoint. Implemented on the IEEE Reliability Test System (IEEE-RTS), the effectiveness of the suggested framework is confirmed.
随着电力市场的不断发展,以及电网的过时性质,系统运营商必须能够更有效地管理运营成本,因为预计未来几年将出现维护成本和设备投资的浪潮。战略性地实施经济高效的以可靠性为中心的维护(RCM)方法似乎是一个关键的解决方案。本文提出了一种有效的部件临界性评估方法,为系统的整体可靠性和进一步的维护重点提供依据。提出了一个博弈论的求解概念,称为Shapely值,它能够在高阶偶然性发生时公平地确定每个单个设备对系统可靠性性能的贡献。建议的框架将有助于实现在电网中的哪些地方进行投资,以从可靠性的角度保持理想的系统性能。在IEEE可靠性测试系统(IEEE- rts)上,验证了该框架的有效性。
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引用次数: 15
E-fields of electrode-based through-the-earth (TTE) communication 基于电极的穿过地球(TTE)通信的电磁场
Pub Date : 2016-10-01 DOI: 10.1109/IAS.2016.7731936
Lincan Yan, Chenming Zhou, M. Reyes, B. Whisner, N. Damiano
An electrode-based through-the-earth (TTE), or linear TTE, communication system sends its signal directly through the earth overburden of a mine by driving an AC current into the earth. The resultant current, present at the receiver, is detected as a voltage and communication is established. The electrode-based TTE system may achieve a considerably large transmission range >305 m (1000 ft). This kind of system may be implemented for emergency communication close to an area such as a refuge alternative or other strategic location to establish communication between underground miners and the surface. Since it does not rely on extensive infrastructure underground, this communication would provide an alternate path out of the mine. Given the attenuation characteristics of the earth-which is the major factor determining the performance of TTE systems-the receiver sensitivity, transmitter antenna length and orientation, working frequency, and transmitted current required for communication can be estimated and determined. In an effort to estimate the earth attenuation, the analytic solution for the electrical field distribution of an electrode-based TTE communication system in a homogenous half-space is derived. A prototype system was built and tested at a mine site. The test data is compared with the modeling results, and a close agreement is found between them.
一种基于电极的穿地(TTE)或线性TTE通信系统通过驱动交流电进入地面,直接通过矿井的地面覆盖层发送信号。产生的电流,存在于接收器上,被检测为电压并建立通信。基于电极的TTE系统可以实现相当大的传输范围>305米(1000英尺)。这种系统可用于靠近避难所或其他战略位置等区域的紧急通信,以建立地下矿工与地面之间的通信。由于它不依赖于地下广泛的基础设施,这种通信将提供一条离开矿井的替代路径。考虑到地面的衰减特性(这是决定TTE系统性能的主要因素),可以估计和确定通信所需的接收灵敏度、发射天线的长度和方向、工作频率和发射电流。为了估计大地衰减,导出了齐次半空间中基于电极的TTE通信系统电场分布的解析解。一个原型系统被建造并在一个矿场进行了测试。将试验数据与建模结果进行了比较,两者吻合较好。
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引用次数: 4
Optimizing the control strategy of molten-salt heat storage systems in thermal solar power plants 太阳能热电厂熔盐蓄热系统控制策略优化
Pub Date : 2016-10-01 DOI: 10.1109/IAS.2016.7731829
M. Prieto, Lourdes A. Barcia, Juan A. Martínez, P. Villegas, R. Peon
Many thermal solar power plants use thermal oil as heat transfer fluid, and molten salts as thermal energy storage. Since the engineering of these plants is relatively new, regulation of the thermal energy storage system is currently achieved in manual or semiautomatic ways, controlling its variables with proportional-integral-derivative (PID) regulators. This paper explores into the results obtained with different control strategies implemented on a complete model of energy storage systems based on molten salt. By doing so, the optimal control method can be identified.
许多热太阳能发电厂使用导热油作为传热流体,使用熔盐作为热能储存。由于这些电厂的工程相对较新,目前对热能储存系统的调节以手动或半自动的方式实现,用比例-积分-导数(PID)调节器控制其变量。本文探讨了基于熔盐储能系统的完整模型在不同控制策略下所获得的结果。通过这样做,可以确定最优控制方法。
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引用次数: 2
期刊
2016 IEEE Industry Applications Society Annual Meeting
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