摘 要
本文旨在探讨风力发电并网对电网的影响及其优化对策。首先概述了风电并网的基本定义、特点以及发展趋势，明确了研究的重要性和背景。接着深入分析了风力发电的基本原理，包括风能捕捉、机械能转化及电能输送过程。在此基础上，详细探讨了风电并网对电网产生的多方面影响，如故障特性变化、保护定值调整复杂、电压波动与闪变以及三相不平衡等问题。针对这些问题，本文提出了一系列优化对策，包括优化故障检测与定位技术、开展保护定值优化、增强无功补偿能力以及安装三相平衡装置等。这些对策旨在提高电网对风力发电的接纳能力和运行安全性，有效缓解风电并网带来的挑战。本研究不仅具有重要的理论价值，也为风电并网实践提供了有益的参考和指导，有助于推动风力发电的可持续发展和能源结构的优化升级。
关键词：风力发电；并网；电网稳定性
Abstract
This paper aims to explore the influence of wind power grid connection on the power grid and its optimization countermeasures. First, the basic definition, characteristics and development trend of wind power grid connection are summarized, and the importance and background of the research are clarified. Then the thorough analysis of the basic principles of wind power generation, including wind energy capture, mechanical energy conversion and electricity transmission process. On this basis, the various effects of wind power grid connection on the power grid are discussed in detail, such as fault characteristic change, complex protection value adjustment, voltage fluctuation and flicker, and three-phase imbalance. To solve these problems, this paper proposes a series of optimization countermeasures, including optimizing fault detection and positioning technology, developing protection value optimization, enhancing reactive power compensation ability and installing three-phase balancing device. These countermeasures aim to improve the acceptance capacity and operation safety of the power grid for wind power generation, and effectively alleviate the challenges brought by wind power grid connection. This study not only has important theoretical value, but also provides useful reference and guidance for the practice of wind power grid connection, and helps to promote the sustainable development of wind power generation and the optimization and upgrading of energy structure.
Key words: Wind power generation; grid connection; power grid stability
目 录
中文摘要 I
英文摘要 II
目 录 III
引 言 1
第1章、风电并网相关概述 2
1.1、风电并网的定义 2
1.2、风电并网的特点 2
1.3、风电并网的发展趋势 3
第2章、风力发电基本原理 4
2.1、风能捕捉 4
2.2、机械能转化 4
2.3、电能输送 5
第3章、风力发电并网对电网影响的问题分析 6
3.1、故障特性变化 6
3.2、保护定值调整复杂 6
3.3、电压波动与闪变 6
3.4、三相不平衡 7
第4章、风力发电并网对电网影响的优化对策 8
4.1、优化故障检测与定位技术 8
4.2、开展定值优化 8
4.3、增强无功补偿能力 8
4.4、安装三相平衡装置 9
结 论 10
参考文献 11
