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harmonic
说明: 利用Blackman窗函数对工频信号进行加窗FFT后校正计算出基波和谐波的幅值、频率和初始相角。(Blackman window function using frequency signal windowed FFT is calculated after the correction of fundamental and harmonic amplitude, frequency and initial phase angle.)
- 2011-03-03 10:18:53下载
- 积分:1
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基于PSCAD的光伏电站仿真与分析
在分析光伏发电原理与光伏电池数学模型的基础上,对由若干光伏阵列组成的大型光伏电站进行PSCAD仿真建模,并分析其运行特性。采用恒电压跟踪方法并利用不同温度下的测量制表值共同实现大规模光伏阵列的最大功率点跟踪(maximum powerpointtracking,MPPT),并设计了相应的并网逆变器控制策略。最后,对大型光伏电站在正常运行以及站内外发生三相短路故障的情况进行仿真分析。(On the basis of analyzing the principle of photovoltaic generation and mathematical model of PCcells.)
- 2017-06-20 14:35:57下载
- 积分:1
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smithybb_10981270
说明: 应用于电力系统最优潮流计算,使用的是原对偶内点法(Optimal dual power point method for optimal power flow calculation)
- 2019-10-31 16:41:50下载
- 积分:1
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潮流计算牛顿法
说明: 对电力系统进行交流潮流计算,计算方法为极坐标系下的牛顿拉夫逊法。(The AC power flow of power system is calculated by Newton Raphson method in polar coordinate system.)
- 2020-06-06 12:55:30下载
- 积分:1
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WindFarm
基于PSCAD的风电厂建模,包含不同子模块,可模拟风电厂的实际运行(The wind power plant model based on PSCAD includes different sub-modules, which can simulate the actual operation of the wind power plant.)
- 2019-03-30 10:31:11下载
- 积分:1
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hydraulic_pitch_calculation
液压变桨系统机构出力和载荷仿真仿真,能够核算不同配置和设计参数下的液压变桨系统性能和载荷假定结果的符合程度。(hydraulic pitch system design)
- 2018-10-03 20:22:05下载
- 积分:1
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BLDCM_test
无刷直流电动机(BLDCM)PWM闭环控制的MATLAB/SIMULINK仿真,包含电压,电流,转速等波形,比较好用(Brushless DC motor (BLDCM) PWM closed-loop control of MATLAB/SIMULINK simulation, including voltage, current, speed, etc. waveform, relatively easy to use)
- 2016-10-10 10:59:13下载
- 积分:1
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DNEWTON
用拟牛顿法求非线性方程组 fi( x1, x2, ?, xn ) = 0, i = 1, 2, ?, n 的一组实数解。(A quasi-Newton method is used to find a set of real solutions of the nonlinear equations.)
- 2020-06-19 20:20:01下载
- 积分:1
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VISITAbp
电力变压器是电力系统中的主要设备之一,利用它可以把不同电压的电网联结在一起,组成复杂的电网或庞大的电力系统,并在其中发挥着重要的作用。电力变压器的可靠运行关系到整个电网的安全,如何对电力变压器的运行中的故障进行诊断,已成为电力部门急需解决的问题。目前,以油中溶解气体为特征量对变压器的故障进行分析,得到了广泛应用。
本次设计要求对电力变压器的内部故障进行广泛了解,并应用BP神经网络对变压器进行智能故障诊断软件设计,实现变压器内部故障论断。主要包括以下内容:
1、掌握用以变压器油中气体为特征量,用BP神经网络诊断变压器内部故障的方法
2、用 Visual Basic编制变压器故障诊断软件,具有以下功能:
a) 数据管理功能。包括变压器信息,色谱数据信息等
b) 故障诊断功能。包括用BP神经网络诊断变压器故障的具体实现方法,并给出故障诊断结果
c) 图形显示功能。包括对同一变压器内气体浓度变化曲线的显示等
d) 辅助功能。如帮助信息,诊断方法的介绍等
(Power transformer is one of the main equipment in power system, it can use the network of different voltage linked together, to form a complex network or large electric power system, and plays an important role in it. Power transformer for the reliable operation of the power grid safety, how to run in power transformer fault diagnosis, has become urgent to solve the problem of electric power sector. At present, the DGA in transformer fault analysis, obtained the widespread application.
The design of power transformer internal fault is widely understood, and the application of BP neural network to transformer fault diagnosis software design, realization of transformer internal fault diagnosis. Mainly include the following contents:
1, master for gas in transformer oil as features, using BP neural network diagnosis method of transformer internal fault
In 2, Visual Basic system of transformer fault diagnosis software, has the following functions:
A ) data management function. )
- 2012-05-07 20:40:34下载
- 积分:1
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090120022
配电网网损计算,前推回代算法,基于分成分区原理(Distribution network loss calculation, forward and backward substitution algorithm is divided into partitions based on the principle)
- 2011-06-06 11:12:26下载
- 积分:1