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2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA)最新文献

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Optimal placement of PMUs in power system network for voltage stability estimation under contingencies 突发事件下电力系统电压稳定性评估中pmu的优化配置
P. Sahu, M. Verma
Voltage stability has been considered as an important threat to power researchers and utilities since last few decades. With placement of Phasor Measurement Units (PMUs) at few selected locations, it may be quite possible to monitor voltage stability of power system network. This paper proposes optimal placement of PMUs considering impact of voltage stability based critical contingencies. Contingencies have been ranked based on voltage stability margin (the distance between the base case operating point and nose point). Variations in voltage stability margin caused by changing load patterns have also been considered while deciding critical contingencies. PMUs have been placed in the system based on results of binary integer linear programming run under system intact case and voltage stability based critical contingency cases. Effectiveness of proposed PMUs placement approach has been established by comparing nose curves obtained using PMUs measurements and pseudo-measurements under increased demands, with offline estimation of nose curves based on the results of continuation power flow. Case studies have been performed on a standard IEEE 14-bus system and practical 246-bus Northern Regional Power Grid (NRPG) system representing power network of nine states of India, with the help of Power System Analysis Toolbox (PSAT) software.
近几十年来,电压稳定性一直被认为是电力研究人员和电力公司面临的一个重要威胁。将相量测量单元(pmu)放置在少数选定的位置,就有可能实现对电网电压稳定性的监测。本文提出了考虑临界事故对电压稳定性影响的pmu优化配置方案。根据电压稳定裕度(基准工况操作点与鼻点之间的距离)对突发事件进行排序。在确定临界事故时,还考虑了负载模式变化引起的电压稳定裕度变化。根据二元整数线性规划的结果,在系统完整情况下和基于电压稳定的临界偶发情况下,将pmu置于系统中。通过比较在需求增加的情况下pmu测量得到的机头曲线和伪测量得到的机头曲线,以及基于连续潮流结果的机头曲线的离线估计,验证了pmu放置方法的有效性。在电力系统分析工具箱(PSAT)软件的帮助下,对代表印度9个邦电网的标准IEEE 14总线系统和实用的246总线北方区域电网(NRPG)系统进行了案例研究。
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引用次数: 5
A novel electricity generation with green technology by Plant-e from living plants and bacteria: A natural solar power from living power plant 一种新型的绿色发电技术,由plant -e从活的植物和细菌中产生:一种来自活的发电厂的天然太阳能
S. Gurram, Naga Sujatha Kothapalli
Every country requires sufficient amount of electricity for their development. In fact, the world needs a renewable, an efficient and sustainable energy production to safeguard our future earth. We documented it, for the people around the world to know about this fascinating technology of young innovative company, Plant-e bringing creative projects to life. It is based on, living plants in Plant-Microbial Fuel Cell (P-MFC) along with bacteria to convert solar energy into in-situ electricity. Plants photosynthesize organic matter for its growth by carbon dioxide, water and thereby capturing solar energy. A significant part of this organic matter is excreted into the soil via the roots as a waste product. In the soil, naturally occurring electrochemically active bacteria break down the organic matter, and produce electrons, which are used for electricity by Plant-e technology. The main advantage of Plant Power is that living plants can capture solar energy naturally and generates electricity 24 hours per day, unlike artificial solar panels. Hence, we can consider it as a “Natural Solar Power.” Plant-e Company also established a business platform for the P-MFC as a promising new bio-energy source and clean technology for applying across the world.
每个国家的发展都需要足够的电力。事实上,世界需要一种可再生、高效和可持续的能源生产来保护我们未来的地球。我们将其记录下来,让世界各地的人们了解这个年轻创新公司的迷人技术,Plant-e将创意项目带入生活。它是基于植物微生物燃料电池(P-MFC)中的活植物和细菌将太阳能转化为原位电力。植物通过二氧化碳和水进行光合作用,从而吸收太阳能。这些有机物质的很大一部分作为废物通过根排泄到土壤中。在土壤中,天然存在的电化学活性细菌会分解有机物,并产生电子,这些电子被Plant-e技术用于发电。植物发电的主要优点是,与人造太阳能电池板不同,植物可以自然地捕获太阳能,每天24小时发电。因此,我们可以将其视为“天然太阳能”。Plant-e公司还为P-MFC作为一种有前景的新型生物能源和清洁技术在全球范围内的应用建立了业务平台。
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引用次数: 6
Multi-functional charger for electric vehicle operating with grid and SPV generation 适用于电网和SPV发电的电动汽车多功能充电器
A. Verma, Bhim Singh
This manuscript proposes a charger for electric vehicle which operates with both the grid and the solar photovoltaic (SPV) array. The charger is designed to operate in four different modes depending on the exchange of power between the grid, SPV array and the vehicle battery. The vehicle battery is charged by both grid and SPV array. The charger feeds the battery and SPV power to the grid at unity power factor. Similarly, local home loads are powered using the battery and SPV array. The sharing of power between grid and SPV array is decided by the controller and it is designed to use SPV power first and then the remaining power is taken from the other source. While feeding power to the grid, a unit template is used for synchronization. It is designed to operate with a single phase, 230V, 50 Hz AC mains installation. The performance under steady state and dynamic conditions validates the design and control of proposed charger.
本文提出了一种同时与电网和太阳能光伏(SPV)阵列运行的电动汽车充电器。根据电网、SPV阵列和车载电池之间的电力交换,充电器被设计成在四种不同的模式下运行。车辆电池由电网和SPV阵列充电。充电器以单位功率因数向电网提供电池和专用车辆的电力。类似地,本地家庭负载使用电池和SPV阵列供电。电网与SPV阵列之间的电力共享由控制器决定,控制器设计为先使用SPV电源,然后从其他电源获取剩余电力。在向电网供电时,使用单元模板进行同步。它设计用于单相,230V, 50hz交流电源安装。在稳态和动态条件下的性能验证了充电器的设计和控制。
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引用次数: 1
Performance comparison of different vector control approaches for a synchronous reluctance motor drive 同步磁阻电机驱动不同矢量控制方法的性能比较
P. Ghosh, A. Das, G. Bhuvaneswari
In this paper, a comprehensive performance comparison has been made for different vector control methods in Synchronous Reluctance Motor (SynRM). The vector control methods investigated are constant direct axis current control and constant current angle control. Different methods of constant current angle vector control included in this paper are MTPA (Maximum torque per ampere), MPFC (Maximum power factor control) and MTPF (Maximum torque per flux). The SynRM is driven by a current controlled PWM voltage source inverter controlled by a PI speed controller. All these methods have been modelled and simulated in Simulink/MATLAB environment, by keeping the PI controller parameters the same and a thorough comparison has been brought out. A very good performance is achieved for the above mentioned vector control methods and their performance parameters such as response time, torque ripple and peak stator current are being compared. The results obtained from the analysis will help in deciding which of the above vector control techniques can be employed in high performance drive applications such as electric vehicles, ship propulsion, traction, etc., when and under what conditions.
本文对同步磁阻电动机的矢量控制方法进行了全面的性能比较。所研究的矢量控制方法有恒定直轴电流控制和恒定电流角控制。本文介绍的恒流角矢量控制方法有MTPA (Maximum torque per am培)、MPFC (Maximum power factor control)和MTPF (Maximum torque per flux)。SynRM由电流控制的PWM电压源逆变器驱动,由PI速度控制器控制。在保持PI控制器参数不变的情况下,在Simulink/MATLAB环境下对这些方法进行了建模和仿真,并进行了全面的比较。对上述矢量控制方法的响应时间、转矩纹波和定子电流峰值等性能参数进行了比较。从分析中获得的结果将有助于确定哪种上述矢量控制技术可以用于高性能驱动应用,如电动汽车、船舶推进、牵引等,以及何时和在何种条件下。
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引用次数: 13
A novel hybrid navigation algorithm for autonomous robotic vacuum cleaners 一种新的自主真空吸尘器混合导航算法
Saurabh Singh, Vinay K Shetkar, Faisal Siddiqui, Dawnee Soman
An autonomous robotic vacuum cleaner, also known as Robovac, performs the task of vacuuming a room autonomously without the need of human supervision. One of the major parts of the working of such a Robovac is its navigation. The Robovac discussed in this paper achieves this task with the help of an array of 4 ultrasonic sensors, which help prevent collisions, and a camera module for computer vision. A caterpillar wheel arrangement, powered by geared dc motors ensures smooth motion over different kinds of surfaces. The hybrid navigation algorithm uses four different algorithms in the same system, namely — Spiral, Wall follower, S-Shaped, and Random Walk, to ensure maximum area coverage in unit time. The proposed algorithm is efficient and simpler as compared to those reported in the earlier literature.
一种自动机器人真空吸尘器,也被称为Robovac,可以在不需要人类监督的情况下自动执行吸尘任务。这种Robovac工作的主要部分之一是它的导航。本文讨论的Robovac在4个超声波传感器阵列的帮助下实现了这一任务,这有助于防止碰撞,以及一个用于计算机视觉的相机模块。履带轮的安排,由齿轮直流电机提供动力,确保在不同种类的表面上平稳运动。混合导航算法在同一系统中采用螺旋、Wall follower、s形、Random Walk四种不同的算法,保证单位时间内最大的覆盖面积。与先前文献报道的算法相比,所提出的算法高效且简单。
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引用次数: 2
A comparative study of PI and PID-based SMC for anti-synchronisation of Vallis system 基于PI和pid的SMC对Vallis系统反同步的比较研究
J. Samantaray, B. K. Roy, P. Singh
The anti-synchronisation between two identical Vallis systems, which describe how temperature fluctuates in the eastern and western regions of the ocean around the equatorial area, is done using sliding mode control. A novel approach of sliding mode control using proportional-integral-derivative-based switching surfaces is devised for the anti-synchronisation. Improvement on the transient response is obtained by this design in comparison with proportional-integral-based switching surfaces. The qualitative and quantitative analyses are done for both the designs. The simulation results confirm the successful achievement of the objective of the paper.
两个相同的Vallis系统之间的反同步是使用滑模控制完成的,Vallis系统描述了赤道附近海洋东部和西部地区的温度波动情况。提出了一种基于比例-积分-导数切换曲面的滑模控制方法。与基于比例积分的开关曲面相比,该设计改善了开关曲面的瞬态响应。对两种设计进行了定性和定量分析。仿真结果证实了本文目标的成功实现。
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引用次数: 0
A self-sufficient solar powered SRM driven irrigation pump utilizing modified Zeta converter 一种自给自足的太阳能SRM驱动灌溉泵,利用改进的Zeta转换器
V. Narayana, A. Mishra, Bhim Singh
This paper aims at developing an inexpensive autonomous photovoltaic (PV) array fed irrigation pump utilizing the switched reluctance motor (SRM) drive. A modified Zeta converter is utilized between PV array and motor-pump to incorporate power conditioning. Its continuous conduction mode (CCM) operation helps to reduce the stress on its devices and also the size of PV capacitor. A Perturb and observe (P &O) maximum power point tracking (MPPT) control algorithm is used to maximize the power output of the PV array. DC link voltage is kept variable which allows reduction of sensors. The fundamental switching of mid-point converter improves the efficiency of the system. The suggested system is premeditated in MATLB and further confirmed with hardware implementation. The simulated and hardware results under varying environmental conditions testify the utility and worthiness of proposed system for irrigation pumps.
本文旨在开发一种廉价的自主式光伏阵列灌溉泵,该泵采用开关磁阻电机(SRM)驱动。在光伏阵列和电机泵之间采用改进的Zeta转换器进行功率调节。它的连续传导模式(CCM)操作有助于减少其器件的应力和PV电容器的尺寸。为了使光伏阵列的输出功率最大化,采用了摄动与观测(p&o)最大功率点跟踪(MPPT)控制算法。直流链路电压保持可变,允许减少传感器。中点变换器的基频开关提高了系统的效率。该系统在matlab中进行了预先设计,并通过硬件实现进一步验证。在不同环境条件下的仿真和硬件结果验证了所提出的灌溉泵系统的实用性和价值。
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引用次数: 0
Bi-directional fast bus transfer scheme for three interconnected busbars 三母线互联的双向快速母线换乘方案
Viral K. Kansara
This paper covers the logic of Fast Bus Transfer (FBT) system between three inter-connected switchboards involving three sources. At present, commonly used schemes include a two-breaker scheme and a three-breaker scheme involving maximum two electrical sources or bus-bars. However, fast bus transfer scheme can also be applied to an electrical system involving three sources or bus-bars. Such an electrical system can be adopted to achieve higher level of reliability. The commonly available FBT microprocessors can be used without greatly changing their operating modes and internal microprocessor programming (part of standard product). The focus is on the operating scheme using the existing standard FBT modules with minor modifications.
本文讨论了涉及三个源的三个互连交换机之间的快速总线传输(FBT)系统的逻辑。目前常用的方案包括双开断方案和最多涉及两个电源或母线的三开断方案。然而,快速总线转换方案也可以应用于涉及三个电源或母线的电气系统。这样的电气系统可以实现更高的可靠性。常用的FBT微处理器可以在不大大改变其操作模式和内部微处理器编程(标准产品的一部分)的情况下使用。重点是使用现有的标准FBT模块进行少量修改的操作方案。
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引用次数: 0
Investigation of grid-structure interaction of wind turbine driven DFIG using FAST and Simulink 基于FAST和Simulink的风电驱动DFIG网-结构相互作用研究
Ganesh P. Prajapat, N. Senroy, I. Kar
This paper presents the study of the interaction of the electrical dynamics with the structure of the wind turbine. A grid connected Doubly Fed Induction Generator (DFIG) based wind energy conversion system has been considered for the investigation. The dynamical structure of the blade and tower of the wind turbine has been modelled by using Euler-Lagrangian approach while the input mechanical power to the wind turbine and the wind loading on the turbine blades and tower was derived by the Blade Element Momentum (BEM) method considering the aerodynamic properties of the blades. The results obtained from the time-domain simulation offer a deep understanding of the combined interaction of electrical, mechanical structural and aero-dynamical aspect of wind turbine generator system and may further be used to design various control schemes. The model has been validated using NREL's simulation tool, FAST (fatigue, aerodynamics, structures and turbulence) and TurbSim. The structural and aerodynamic data of NREL's 5-MW baseline wind turbine were used for the simulation.
本文研究了风力机结构与电动力学的相互作用。研究了一种基于并网双馈感应发电机(DFIG)的风能转换系统。采用欧拉-拉格朗日方法对风力机叶片和塔架的动力结构进行了建模,并考虑叶片的气动特性,采用叶片元动量法推导了风力机的输入机械功率以及叶片和塔架上的风荷载。时域仿真结果对风力发电机组系统的电气、机械、结构和气动方面的相互作用有了深入的了解,并可用于设计各种控制方案。该模型已使用NREL的模拟工具FAST(疲劳、空气动力学、结构和湍流)和TurbSim进行了验证。利用NREL的5mw基线风力机的结构和气动数据进行仿真。
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引用次数: 2
Optimal sizing of a stand-alone PV/wind/MHP/biomass based hybrid energy system using PSO algorithm 基于粒子群算法的独立光伏/风能/MHP/生物质混合能源系统的最优规模
Anurag Chauhan, V. Dwivedi
In remote areas, local generating plant based on renewable energy sources has been received a greater attention to meet the energy demand. Renewable energy sources (small hydro, solar, wind, biomass etc.) have the sufficient potential in India. Utilizing these sources in stand-alone mode is an appropriate choice for energy access in local areas. The present paper deals with the size optimization of a stand-alone PV/Wind/MHP/Biomass based hybrid energy system for un-electrified village hamlets of Indian state of Uttarakhand. Further, three renewable energy scenarios are considered under the present study. Finally, a simple and efficient Particle Swarm Optimization (PSO) algorithm has been used to optimize the total annual cost (TAC) for each scenario. Expected energy not supplied (EENS) is incorporated as a power reliability constraint while optimal sizing of the system components.
在偏远地区,以可再生能源为基础的当地发电厂受到了更多的关注,以满足能源需求。可再生能源(小水电、太阳能、风能、生物质能等)在印度有足够的潜力。以独立模式利用这些能源是当地能源获取的适当选择。本文讨论了印度北阿坎德邦未通电村庄的独立光伏/风能/MHP/生物质混合能源系统的规模优化。此外,本研究还考虑了三种可再生能源情景。最后,采用一种简单高效的粒子群优化算法(PSO)对不同场景下的总年成本(TAC)进行了优化。在优化系统部件尺寸时,将预期不供能(EENS)作为电力可靠性约束。
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引用次数: 6
期刊
2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA)
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