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随着新的数学工具小波分析的实用化为基于NN负荷预测模型性能的改善提供了理论依据对于电力系统负荷非线性时间序列的辨识在预测方法研究中应给予重视在本文所用的基于小波原理和NN融合的预测原理是具有强的非线性时间序列的辩能力由研究和仿真表明它能有效提高预测的精度-with new mathematical tools wavelet analysis based on NN into practical load forecasting model to improve the performance
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本文首先介绍了有源电力滤波器的基本结构和工作原理,并对一些常规的谐波电流检测方法的优缺点进行了比较。其次,针对传统的谐波电流检测方法的缺陷,提出将神经网络与基于噪声抵消原理的自适应谐波检测相结合,利用径向基函数运算量小、收敛快、无局部极小值等优点,构造了一种基于径向基函数神经网络的谐波电流检测方法,仿真结果表明该检测方法具有很好的动态响应及畸变电流检测精度。最后,设计了一套实验系统,对本文所采用的系统方案进行了实验验证。仿真表明,本文所采用的有源电力滤波器检测系统方案切实可行,能够较好地实现动态
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The paper presents the transient analysis of a 1.7MVA wind-power doubly fed induction generator (DFIG) connected to the network and controlled by modified direct torque control during power system disturbances.
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国外的一种快速潮流算法论文,电力系统方向的朋友可以下来-Abroad, the trend of a fast algorithm of the paper, the direction of the power system can be down to see friends
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:针对时滞系统的特点和采用神经网络单值预测控制存在的不足,提出了多步超前预测与补偿的控制算
法,有效地增加了控制力度,改善了动态性能,并论述了增加的预测与补偿步数与稳定的关系
-With regards to the characteristics of time-delay system and the weakness of single predictive control, this pa-
per puts forward a control scheme of multi
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动态矩阵的预测控制源程序,可以实现预测控制中的模型预测和优化算法。- this pa-
per puts forward a control scheme of multi-step-ahead prediction and compensation, which increases control power effectively,
and improves dynamic characteristics ofthe system. The paper also discusses
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博士论文,关于电力系统脆性分析,欢迎大家参考-PhD thesis, on the fragile power system analysis, welcome reference
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基于变速恒频双馈风力发电系统的理论分析,文中将应用MATLAB/Simulink建立整个系统的模型,主要包括风力机、双馈发电机(含转子侧和网侧变换器)、控制器(含网侧变换器控制器、转子侧变换器控制器)。通过建立的模型对仿真波形进行分析,验证模糊控制器的可行性。-Based VSCF doubly fed wind power generation systems theory, this paper, the application of MATLAB/Simulink model for th
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一、 牛顿-拉夫逊法概要
首先对一般的牛顿-拉夫逊法作一简单说明。已知一个变量X的函数
(4-6)
解此方程式时,由适当的近似值X(0)出发,根据 (4-7)
反复进行计算,当X(n)满足适当的收敛判定条件时就是(4-6)式的根。这样的方法就是所谓的牛顿-拉夫逊法。
式(4-7)就是取第n次近似解X(n)在曲线 上的点 处的切线与X轴的交点作下一次X(n+1)值的方法。参考图4-2(a)。在这一方法中为了能收敛于真解,初值X(0)的选取及函数f(X)必须满足适当的条件,如
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摘要:为了减少先验知识对统一潮流控制器中模糊规则的设计和电力系统参数的变化对统一潮流控制器性能的影响, 文中采用模糊神经网络来设计统一潮流控制器-Abstract: In order to reduce a priori knowledge of the unified power flow controller in the fuzzy rules in the design and power system parameters on the unified power flow contr
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论文介绍了IGBT 逆变焊接电源系统的结构和组成,整台焊接电源包括电源主电路,控制电路和保护电路。-Paper describes the IGBT inverter welding power system structure and composition of the entire main circuit welding power supply including power, control and protection circuits.
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论文的重点是一线性模型的风力发电系统
这是龙的线性化理论。与此相关,也获得了
反推滑模控制和同步
滑动模式控制器俯仰运动
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paper is focusing on the third-order model of wind power system
which is linearized by the DFL theory. And this also obtains the
controlling of backstepping sliding mode
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这是关于电力系统接地保护介绍的英文原始文档.可以帮助学习英文和电力系统知识.-This document is an orginal English paper about the power system protection and grounding.
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这是关于电力系统变电站接地保护介绍的英文原始文档.可以帮助学习英文和电力系统知识.-This is a paper about power system substation grounding document.
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This paper deals with the damping technic of Low frequency oscillation in power system with SSSC compensator and various controllers
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This paper proposes the design and implementation of the functional electrical stimulator using the ultra low power microcontroller MSP430 , which restores the functionality of paralyzed portion of human body due to spinal cord injury (SCI) that cons
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随着电力系统的发展,电网的容量,电压等级不断提高,大型高压变压器作为电能传送的枢纽,它的安全运行与否,直接关系到电力系统能否连续稳定地工作。特别是由于大型变压器结构复杂、造价昂贵,一旦发生严重故障而损坏,将给维修工作带来很大困难,造成经济上的重大损失。微机继电保护系统作为一种能反映电力系统故障和不正常状态、及时动作于断路器跳闸或发出信号的自动化设备能自动、迅速和有选择地切除故障组件,使系统免遭损坏。因此对于研制开发性能优良的变压器微机保护装置具有十分重要的现实意义。
本论文在现有的变压器主、
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Distributed Generators (DGs) in a microgrid may operate in three different reactive power control strategies, including PV, PQ and voltage droop schemes. This paper proposes a new stochastic programming approach for reactive power scheduling of a mic
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This paper describe Nonlinear control of power system multi-mode oscillations
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The role of the transmission network in the Power
System is to transmit the power generated in the power plants to
the load centers and the interconnected power systems. The
transmission of electric power has to take place in the most
efficient w
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