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2012 IEEE International Conference on Power System Technology (POWERCON)最新文献

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Optimal dispatch of wind farm based on particle swarm optimization algorithm 基于粒子群优化算法的风电场优化调度
Pub Date : 2012-10-01 DOI: 10.1109/POWERCON.2012.6401354
Xiaorong Zhu, Wentong Zhang, Yi Wang, Haifeng Liang
As installed capacity of wind power retains a significant proportion of generation in the power system, the dispatch of wind power brings some new problems to the system. It is an effective way to increase the capabilities of wind farms to regulate active power for grid optimal dispatch support. Particle swarm algorithm is an excellent optimization algorithm for its robustness and versatility, and it has been widely used in the field of power system optimization in recent years. In this paper, an active power dispatch model of wind turbine generators is presented, in which the optimization objective is to minimize the line loss of the wind farm, and the particle swarm optimization algorithm is applied to solve the optimization function. Testing results show that this calculation method could track the power dispatch upon operator's request more accurately than the conventional distribution method, and the active power loss of wind farm can be reduced.
由于风电装机容量在电力系统中占有相当大的比重,风电的调度给系统带来了一些新的问题。提高风电场调节有功功率的能力是支持电网优化调度的有效途径。粒子群算法具有鲁棒性和通用性,是一种优秀的优化算法,近年来在电力系统优化领域得到了广泛的应用。提出了以风电场线损最小为优化目标的风力发电机组有功功率调度模型,并应用粒子群优化算法求解优化函数。试验结果表明,该计算方法比传统的分配方法更能准确地跟踪用户的需求,降低了风电场的有功损耗。
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引用次数: 2
Tracking of time-varying grid voltage using DFT based second order generalized integrator technique 基于二阶广义积分器技术的时变电网电压跟踪
Pub Date : 2012-10-01 DOI: 10.1109/POWERCON.2012.6401432
M. S. Reza, M. Ciobotaru, V. Agelidis
This paper proposes a robust, fast and accurate estimation technique for the tracking of time-varying grid voltage parameters. The proposed technique consists of a fundamental frequency tracking method based on a fixed window discrete Fourier transform (DFT) and a quadrature signal generator (QSG) based on a second order generalized integrator (SOGI) in order to track the fundamental amplitude and phase angle. The spectral leakage property of the fixed window DFT is used to track the time-varying fundamental frequency which is subsequently used as the resonance frequency of the QSG-SOGI to generate the orthogonal waveforms of the grid voltage fundamental component. The performance of the proposed DFT based SOGI technique is also compared with the frequency locked loop (FLL) based QSG-SOGI (SOGI-FLL), phase-locked loop (PLL) based on the QSG-SOGI (SOGI-PLL) and quadrature PLL (QPLL) techniques. The superior performance of the proposed technique is verified using synthetically generated grid voltage waveforms in MATLAB/Simulink.
本文提出了一种鲁棒、快速、准确的时变电网电压参数跟踪估计技术。该技术由一种基于固定窗口离散傅立叶变换(DFT)的基频跟踪方法和一种基于二阶广义积分器(SOGI)的正交信号发生器(QSG)组成,以跟踪基频振幅和相位角。利用固定窗DFT的频谱泄漏特性跟踪时变基频,并将其作为QSG-SOGI的谐振频率,生成电网电压基频分量的正交波形。并与基于DFT的锁频环(FLL)的QSG-SOGI (SOGI-FLL)、基于QSG-SOGI的锁相环(PLL) (SOGI-PLL)和正交锁相环(QPLL)技术的性能进行了比较。在MATLAB/Simulink中通过综合生成的电网电压波形验证了该技术的优越性能。
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引用次数: 25
Short current control method for inductively coupled power transfer system 电感耦合输电系统的短电流控制方法
Pub Date : 2012-10-01 DOI: 10.1109/POWERCON.2012.6401415
X. Dai, Jia Shi, Yue Sun
In Inductively Coupled Power Transfer (TCPT) system, when system running in force resonant mode, there will exist dangerous short current between the resonant network and the switching network when switching frequency drifts away from inherent frequency of the resonant network. This paper proposes a short current control method to eliminate the short current by regulating the switching frequency to approach the inherent frequency. An instantaneous short current detection method and a mismatch error estimation method are proposed as well. The control method can be easily embedded in FPGA module to realize fast control. Experimental results verify the control method..
在电感耦合功率传输(TCPT)系统中,当系统运行在力谐振模式时,当开关频率偏离谐振网络固有频率时,谐振网络与开关网络之间会产生危险的短路电流。提出了一种短电流控制方法,通过调节开关频率使其接近固有频率来消除短电流。提出了一种瞬时短电流检测方法和失配误差估计方法。该控制方法可以方便地嵌入到FPGA模块中,实现快速控制。实验结果验证了该控制方法的有效性。
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引用次数: 0
Wide area monitoring for power system protection - a review 电力系统保护的广域监测综述
Pub Date : 2012-10-01 DOI: 10.1109/POWERCON.2012.6401410
V. Siyoi, M. Nthontho, S. Chowdhury, S. Chowdhury
The complexities of power systems have called for more advanced technologies to be deployed to maintain the system's integrity. More accurate and real-time base tagging of electrical data has therefore been employed to suit this paradigm shifts in electrical advancements. This paper gives an overview of real-time wide area monitoring of power systems using synchroscopes, for remote monitoring and fast service recovery from electrical faults. This has been done through a comprehensive review of existing research literature in this field.
电力系统的复杂性要求部署更先进的技术来保持系统的完整性。因此,采用更准确和实时的电气数据基础标记来适应电气进步的这种范式转变。本文概述了利用同步仪对电力系统进行实时广域监测,以实现远程监测和电力故障后的快速恢复。这是通过对该领域现有研究文献的全面回顾来完成的。
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引用次数: 4
Short-term generation forecast of wind farm using SVM-GARCH approach 基于SVM-GARCH方法的风电场短期发电量预测
Pub Date : 2012-10-01 DOI: 10.1109/POWERCON.2012.6401309
S. Zhu, M. Yang, X. S. Han
Wind generation forecast is important for power system operation, trading, and some other applications. In this paper, a practical approach for short-term wind generation forecast is proposed. The proposed approach uses Support Vector Machine (SVM) to produce the primary wind farm generation forecast results. However, since the residual error is assumed to be independently identically distributed (IID) in SVM, which ignores the strong volatility property of wind generation, a Generalized Autoregressive Conditional Heteroscedasticity (GARCH) model, which can predict the varying residual error, is used here to correct the SVM forecast results. The proposed approach can provide more reliable forecast results comparing with the usual SVM approach. Test results on two wind farms located in Heilongjiang Province in northeast China demonstrate the effectiveness of the proposed approach.
风力发电预测对电力系统运行、交易和其他一些应用具有重要意义。本文提出了一种实用的短期风力发电预测方法。该方法利用支持向量机(SVM)对风电场发电进行初步预测。然而,由于支持向量机的残差假设为独立同分布(IID),忽略了风力发电的强波动特性,因此本文采用能够预测残差变化的广义自回归条件异方差(GARCH)模型对支持向量机的预测结果进行校正。与常用的支持向量机方法相比,该方法能提供更可靠的预测结果。在中国东北黑龙江省的两个风电场的测试结果表明了该方法的有效性。
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引用次数: 13
Probabilistic security assessment for power system operation with Significant Wind penetration 重大风侵彻下电力系统运行的概率安全评估
Pub Date : 2012-10-01 DOI: 10.1109/POWERCON.2012.6401401
D. H. Nguyen, M. Negnevitsky
Integration of wind power generation into the grid makes important impacts on power system planning and operation due to variable nature of the wind power. This paper proposes a probabilistic approach to assess the security of a power system with high wind penetration within operational context. The principal advantage of the proposed probabilistic security assessment approach is that, when compared to the traditional deterministic approach, it takes into account the uncertainties of both wind power generation and power demand. As a result, it provides a better understanding of the system security that may lead to better operational decision-making. A 5-bus test system is used as a case study to illustrate advantages of the proposed probabilistic approach.
由于风电的多变性,风电并网对电力系统的规划和运行产生重要影响。本文提出了一种概率方法来评估运行环境下高风侵度电力系统的安全性。本文提出的概率安全评估方法的主要优点是,与传统的确定性方法相比,它同时考虑了风力发电和电力需求的不确定性。因此,它提供了对系统安全性的更好理解,从而可能导致更好的操作决策。以一个5总线测试系统为例,说明了所提出的概率方法的优点。
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引用次数: 3
Global optimal solution for network reconfiguration problem using AMPSO algorithm 基于AMPSO算法的网络重构问题全局最优解
Pub Date : 2012-10-01 DOI: 10.1109/POWERCON.2012.6401322
K. Kiran Kumar, N. Venkata Ramana, S. Kamakshaiah
This paper presents a new Adaptive Mutation Particle Swarm Optimization algorithm for minimization of losses of a Reconfigured Distribution Network. The tendency of solution being struck up to local optima or premature convergence as in the case of conventional PSO is thoroughly avoided using this new proposed technique. The algorithm is based on variance of population's fitness. During running time, the mutation probability is mainly based on variance of population's fitness and current optimal solution. The algorithm is tested on a standard IEEE 16 and 32 bus systems. The simulation results obtained and comparison with other popular existing methods is proving the effectiveness of this method.
提出了一种新的自适应突变粒子群优化算法,用于解决配电网重构后的损失最小化问题。该方法完全避免了传统粒子群算法的局部最优解或过早收敛的问题。该算法基于种群适应度的方差。在运行过程中,突变概率主要取决于种群适应度方差和当前最优解。该算法在标准IEEE 16和32总线系统上进行了测试。仿真结果以及与现有常用方法的比较验证了该方法的有效性。
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引用次数: 5
A novel gain scheduling application for voltage-sourced inverters control based on internal model principle 基于内模原理的增益调度在电压源逆变器控制中的应用
Pub Date : 2012-10-01 DOI: 10.1109/POWERCON.2012.6401369
Woei-Luen Chen, Yu-Ming Chiu, Zheng-Cong Li, Chia-Shin Yen, David Wu
This paper describes a systematic approach to the control design of voltage-sourced inverters (VSIs). The proposed method can unify voltage and current controllers into the system model based on the internal model principle. Not only the system dynamic can be characterized mathematically, but the control object can follow its reference input without incurring steady-state error. To further adapt the VSI controller over diverse operating points along with satisfactory performance, the control gains are scheduled corresponding to various loading conditions in order to achieve the desired time-domain specifications portrayed by closed-loop eigenvalues. The experimental results confirm the performance of the proposed strategy.
本文介绍了一种系统的电压源逆变器控制设计方法。该方法基于内模原理,将电压和电流控制器统一到系统模型中。不仅可以用数学方法描述系统的动态特性,而且控制对象可以跟随其参考输入而不会产生稳态误差。为了进一步使VSI控制器适应不同的工作点以及令人满意的性能,控制增益对应于各种负载条件进行调度,以达到闭环特征值所描绘的期望时域规格。实验结果证实了该策略的有效性。
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引用次数: 1
Implementation of Dynamic Transformer Rating in a distribution network 配电网动态变压器额定值的实现
Pub Date : 2012-10-01 DOI: 10.1109/POWERCON.2012.6401328
T. Jalal, N. Rashid, B. van Vliet
Unison Networks Limited is currently implementing Dynamic Transformer Rating (DTR) on most of the power transformers in its distribution network. The implementation involves 50 transformers across three different regions - Hawkes Bay, Taupo and Rotorua. The DTR scheme utilizes an in-house developed DTR algorithm that has been designed based on the IEC60076-7 Loading Guide for Oil Immersed Power Transformer Standard. The algorithm samples real time data from various sensors installed in the networks and translates them into dynamic rating and insulation loss of life information for each transformer.
Unison网络有限公司目前正在其配电网中的大多数电力变压器上实施动态变压器评级(DTR)。该项目涉及50台变压器,分布在三个不同的地区——霍克斯湾、陶波和罗托鲁瓦。DTR方案采用内部开发的DTR算法,该算法是根据IEC60076-7油浸式电力变压器加载指南标准设计的。该算法对安装在电网中的各种传感器的实时数据进行采样,并将其转换为每个变压器的动态额定值和绝缘寿命损耗信息。
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引用次数: 16
Effect of multiple compact fluorescent lamp usage on residential power quality 多个紧凑型荧光灯的使用对住宅电能质量的影响
Pub Date : 2012-10-01 DOI: 10.1109/POWERCON.2012.6401250
R. Rayudu, R. Rigo-Mariani, M. Witherden
This paper discusses the results of experiments performed to analyze the effects of multiple compact fluorescent lamp usage on residential power quality. CFLs are quickly replacing incandescent lamps in home lighting but their effects as non-linear loads on residential power quality is unknown. We performed 15 sets of experiments with different CFLs and analyzed their harmonic interactions. The results provided interesting outcomes in terms of collective contribution and harmonic cancellation. Some of the results are tabulated in this paper and discussed.
本文讨论了多个紧凑型荧光灯使用对住宅电能质量影响的实验结果。节能灯正迅速取代白炽灯在家庭照明中,但其作为非线性负荷对住宅电力质量的影响尚不清楚。我们用不同的节能灯进行了15组实验,分析了它们的谐波相互作用。结果在集体贡献和谐波抵消方面提供了有趣的结果。本文将部分结果制成表格并进行了讨论。
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引用次数: 0
期刊
2012 IEEE International Conference on Power System Technology (POWERCON)
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