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摘要

风能是目前国内外应用较为广泛的一种绿色可再生能源，近几年我国风电产业的发展十分迅速。然后，越来越多的风力发电系统建并网，风力发电产生的电能受外界因素影响较大，具有一定的随机性和波动性，给并网后的电力系统稳定性带了巨大的影响。然后建立风力发电厂的储能系统是改善此种情况的最好的解决办法。因此，近年来风电场储能装置的装备、容量配置及风储联合运行控制成为了研究和应用示范的热点。

由于储能电池成本高、使用寿命相对较短，往往需要以很小的储能容量配置来担负风电场的有功出力平滑任务，这同时也给电池系统的控制带来了挑战。本文中以某中型实际风场为例，就风储联合运行中的控制策略进行了研究，着重探讨了以锂离子电池储能系统抑制双馈风机风场出力波动的控制策略，同时实现对电力系统暂态支撑作用的虚拟惯量补偿策略，以及与有功平滑同步的并网点无功补偿策略。

关键词：风力发电；双馈异步发电机；储能系统；并网

Abstract

 Wind energy is a kind of green renewable energy widely used at home and abroad.Then, more and more wind power generation systems are built and connected to the grid. The electricity generated by wind power generation is greatly affected by external factors and has certain randomness and volatility, which has a great impact on the stability of the power system after being connected to the grid.The best way to improve the situation is to build energy storage systems for wind farms.Therefore, in recent years, the equipment, capacity configuration and joint operation control of wind farm energy storage devices have become the focus of research and application demonstration.

Due to the high cost and short service life of the energy storage battery, it is often necessary to configure a small energy storage capacity to take on the active power output smoothing task of the wind farm, which also brings challenges to the control of the battery system.This article in a medium-sized actual wind field, for example, is the wind storage in operation of the joint control strategy are studied, emphatically discusses the inhibition of doubly-fed fan in lithium ion battery energy storage system, the control strategies of wind power fluctuations at the same time of power system transient support virtual inertia compensation strategy, as well as active smooth synchronization and network reactive compensation strategy.

Keywords: Wind power; Doubly-fed asynchronous generator; Energy storage system; interconnection

   

目录

摘要............................................................................................................................. I

Abstract...................................................................................................................... II

第一章绪论............................................................................................................... 1

1.1研究课题背景............................................................................................. 1

1.2课题研究现状............................................................................................. 1

1.2.1风力发电现状与趋势............................................................ 1

1.2.2风电并网问题研究现状................................................................ 3

1.3本文的主要研究内容........................................................................ 3

第二章风储联合发电系统的构建..................................................................... 4

2.1风力发电特性分析............................................................................ 4

2.2风力发电系统分类.................................................................................... 6

2.2.1恒速恒频风力发电系统................................................................ 6

2.2.2变速恒频风力发电系统................................................................ 7

2.3风电功率波动特性研究................................................................... 8

2.3.1风电功率波动特性分析........................................................ 8

2.3.2风电功率波动指标................................................................ 9

2.4储能系统工作原理............................................................................ 9

2.5风电场储能系统配置方式..................................................... 10

2.6小结........................................................................................................... 12

第三章储能改善风电场出力特性....................................................................... 12

3.1章节描述................................................................................................... 12

3.2风电并网相关指标.................................................................................. 12

3.3风电出力特性分析.................................................................................. 13

3.3.1风电功率波动特性分析.............................................................. 13

3.3.2风电机组及风场出力特性分析................................................. 14

3.4本章小结................................................................................................... 16

第四章风储联合系统并网仿真............................................................................ 16

4.1  风储联合系统并网的模型.................................................................. 16

4.1.2 风力涡轮机风电场对储能系统的影响...................................... 16

4.1.2 永磁同步电机风电场对储能系统的影响.................................. 17

4.2  风力涡轮机风储联合系统模型并网情况......................................... 18

4.2.1 风电场在不同风速下对系统电压、电流以及功率的影响.... 18

4.3  永磁同步电机风储联合系统模型并网情况..................................... 21

4.4  不同风速组合下风电场对系统影响................................................. 24

4.5  小结........................................................................................................ 24

第五章总结............................................................................................................. 25

参考文献................................................................................................................. 26