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摘要在环境污染问题日益严重加之传统化石能源也日趋枯竭的严峻情形下，当下，在世界各国以风电为代表的新能源并网技术已经得到迅速发展。由于风电的规模每年都在逐渐增大，风速的波动对风电网稳定性的影响范围也相应增大。规模较大的风电机组并网使得电力系统的潮流分布相应改变，与此同时传输线路上的有功与无功功率分布发生变化，从而造成电力系统稳定性受到了一定程度的干扰。40934
- 上一篇：二阶倒立摆系统的控制问题研究
- 下一篇：变压器励磁电流特性分析
本文主要研究的是简单小规模风力发电机组的接入对电力系统稳定性的影响。首先分析双馈式风力发电系统的数学模型，从而理解与掌握各个模型的参数设置，并基于当同一点即电源点接入同步发电机并网的系统模型的算例对比对单机无穷大为电源系统图算例，在这个简单系统的另一端接入双馈式风力法定机组，通过仿真软件对风力发电并网对系统 的影响进行研究。然后，再分析风速变化的波动程度对风电系统的静态电压稳定性原理，并釆用功角稳定性指标分析风电接入后电力系统的静态电压稳定性。利用不同稳定类型的分析指标，针对含有风电的强、弱电力系统，分析不同风电出力情况下，即不同风电并网的规模对系统稳定性的影响。最后，推导分析了风电并网后系统暂态电压的表达式，并以含有基于双馈风力发电机组风电场的简单系统为例，仿真分析了不同风电出力规模、各种故障类型等对系统暂态稳定性的影响，分析仿真特性曲线并给出了相应结论。
毕业论文关键词：电力系统 风力并网 小干扰稳定性 暂态稳定性 MATLAB仿真软件
Abstract I In combined with the serious environment pollution problem of traditional fossil energy also depleted the grim situation, at present, represented by the wind in the countries all over the world new energy grid technology has gained rapid development. Characteristics due to the special nature of wind power, wind power at the same time makes the system such as intermittent, regional stability of all kinds of changes have taken place.
This article mainly research by small capacity wind power unit connected to the small disturbance and transient stability of power grids. First analysis of the mathematical model of doubly-fed wind power system from the understanding and mastering the model parameter is set, and based on when the same grid point source access namely synchronous generator system model of the numerical example compared to single machine infinite power system diagram example, greatly in this simple system, on the other side of the access type doubly-fed wind legal unit, through the simulation software of grid-connected wind effect of the system were studied. Then, analyze the small disturbance voltage stability of power system containing wind power mechanism, and the quantitative study Angle stability analysis of wind power after the access to the static voltage stability of power system. Using different types of stable analysis indicators, in view of the strong and the weak power system containing wind power, analysis of different wind power output, namely different wind turbines combined effect of the system. After wind power grid system are analyzed in the end, derived the expressions of the transient voltage, and to contain small system based on doubly-fed wind turbine wind farm as an example, the simulation analysis of the different scale of wind power output, the influence of various fault types such as the system transient, simulation analysis of characteristic curve and presents a corresponding conclusion.
Key words: Power System; wind power integration; small-disturbance stability; Transient Stability; MATLAB simulation software
目 录
摘 要 I
Abstract II
目 录 IV
1 绪论 1
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