摘 要
随着能源需求增长和环境问题凸显，分布式发电系统因其清洁、高效及灵活等特点成为现代电力系统的重要组成部分。本文针对分布式发电系统的并网运行与控制策略展开研究，旨在提高其并网稳定性与电能质量。首先分析了分布式电源的特性及其对配电网的影响，提出了基于下垂控制与虚拟同步发电机技术相结合的并网控制方法，该方法不仅能够实现有功功率和无功功率的解耦控制，还能有效模拟同步发电机的惯性和阻尼特性，增强系统的抗干扰能力。通过建立数学模型，利用MATLAB/Simulink进行仿真验证，结果表明所提方法在不同工况下均能保持良好的动态响应性能，且电压波动范围控制在合理区间内，谐波含量显著降低。
关键词：分布式发电系统 并网控制策略 下垂控制与虚拟同步发电机技术
Abstract
With the growth of energy demand and prominent environmental problems, the distributed generation system has become an important part of the modern power system because of its clean, efficient and flexible characteristics. This paper studies the grid connected operation and control strategy of distributed generation system to improve its grid connected stability and power quality. First analyzes the characteristics of distributed power supply and its influence on distribution network, based on droop control and virtual synchronous generator technology combination of grid control method, the method not only can realize the active power and reactive power decoupling control, also can effectively simulate the inertia and damping characteristics of synchronous generator, enhance the anti-interference ability of the system. By establishing a mathematical model and using MATLAB / Simulink, the results show that the proposed method can maintain good dynamic response performance under different working conditions, and the voltage fluctuation range is controlled within a reasonable range, and the harmonic content is significantly reduced.
Keyword:Distributed Generation System Grid-Connected Control Strategy Droop Control And Virtual Synchronous Generator Technology
目 录
1绪论 1
1.1研究背景与意义 1
1.2国内外研究现状综述 1
1.3本文研究方法概述 2
2并网运行特性分析 2
2.1分布式电源接入方式 2
2.2并网稳定性影响因素 3
2.3电能质量评估指标 3
3控制策略设计与优化 4
3.1基本控制算法原理 4
3.2功率控制策略研究 5
3.3故障穿越技术分析 5
4系统协调控制机制 6
4.1微电网运行模式切换 6
4.2多源协同控制策略 6
4.3能量管理与调度优化 7
结论 8
参考文献 10
致谢 11
随着能源需求增长和环境问题凸显，分布式发电系统因其清洁、高效及灵活等特点成为现代电力系统的重要组成部分。本文针对分布式发电系统的并网运行与控制策略展开研究，旨在提高其并网稳定性与电能质量。首先分析了分布式电源的特性及其对配电网的影响，提出了基于下垂控制与虚拟同步发电机技术相结合的并网控制方法，该方法不仅能够实现有功功率和无功功率的解耦控制，还能有效模拟同步发电机的惯性和阻尼特性，增强系统的抗干扰能力。通过建立数学模型，利用MATLAB/Simulink进行仿真验证，结果表明所提方法在不同工况下均能保持良好的动态响应性能，且电压波动范围控制在合理区间内，谐波含量显著降低。
关键词：分布式发电系统 并网控制策略 下垂控制与虚拟同步发电机技术
Abstract
With the growth of energy demand and prominent environmental problems, the distributed generation system has become an important part of the modern power system because of its clean, efficient and flexible characteristics. This paper studies the grid connected operation and control strategy of distributed generation system to improve its grid connected stability and power quality. First analyzes the characteristics of distributed power supply and its influence on distribution network, based on droop control and virtual synchronous generator technology combination of grid control method, the method not only can realize the active power and reactive power decoupling control, also can effectively simulate the inertia and damping characteristics of synchronous generator, enhance the anti-interference ability of the system. By establishing a mathematical model and using MATLAB / Simulink, the results show that the proposed method can maintain good dynamic response performance under different working conditions, and the voltage fluctuation range is controlled within a reasonable range, and the harmonic content is significantly reduced.
Keyword:Distributed Generation System Grid-Connected Control Strategy Droop Control And Virtual Synchronous Generator Technology
目 录
1绪论 1
1.1研究背景与意义 1
1.2国内外研究现状综述 1
1.3本文研究方法概述 2
2并网运行特性分析 2
2.1分布式电源接入方式 2
2.2并网稳定性影响因素 3
2.3电能质量评估指标 3
3控制策略设计与优化 4
3.1基本控制算法原理 4
3.2功率控制策略研究 5
3.3故障穿越技术分析 5
4系统协调控制机制 6
4.1微电网运行模式切换 6
4.2多源协同控制策略 6
4.3能量管理与调度优化 7
结论 8
参考文献 10
致谢 11
