摘要
本文聚焦于微电网并网运行过程中的同步稳定性问题及其应对策略，旨在通过深入研究，为微电网与主电网的高效、稳定融合提供理论依据和技术支持。微电网作为灵活性强、可靠性高的能源供应模式，其并网运行对于提升电力系统整体效能、促进可再生能源消纳具有重要意义。然而，在并网过程中，微电网与主电网之间的同步稳定性问题成为制约其广泛应用的关键技术瓶颈。本文首先分析了微电网与主电网在并网运行中的基本特点，包括可靠性、灵活性和可持续性等方面的差异，并指出同步运行控制策略在保障两者协调运行中的核心作用。随后，从能量管理、频率控制、电压控制及保护策略等四个方面，详细探讨了实现微电网与主电网同步运行的具体策略。通过制定合理的能源调度计划、频率调节装置、电压补偿装置及保护方案，本文提出了一系列旨在提升同步稳定性的控制策略，旨在解决微电网与主电网之间的功率匹配、电压匹配及频率同步等关键问题。研究结果表明，这些策略不仅能够有效提升微电网与主电网之间的能量交换效率，实现能源的优化配置，还能显著增强电力系统的安全性和稳定性。特别是在应对突发事件和应急状况时，同步运行控制策略能够提升电力系统的应变能力和抗灾能力，为公共服务设施的供电和社会稳定提供有力保障。
关键词：微电网；并网运行；同步稳定性
Abstract
This paper focuses on the synchronous stability problems and the coping strategies in the process of micro-grid operation, aiming to provide theoretical basis and technical support for the efficient and stable integration of the microgrid and the main grid through in-depth research. As an energy supply mode with high flexibility and high reliability, the grid-connected operation of microgrid is of great significance for improving the overall efficiency of the power system and promoting the consumption of renewable energy. However, in the process of grid connection, the problem of synchronous stability between the microgrid and the main grid has become the key technical bottleneck restricting its wide application. This paper first analyzes the basic characteristics of microgrid and main grid in grid-connected operation, including the differences in reliability, flexibility and sustainability, and points out the core role of synchronous operation control strategy in ensuring the coordinated operation of the two. Then, from the four aspects of energy management, frequency control, voltage control and protection strategy, the specific strategies to realize the synchronous operation of the microgrid and the main grid are discussed in detail. By developing reasonable energy dispatching plan, frequency regulation device, voltage compensation device and protection scheme, this paper proposes a series of control strategies aimed at improving synchronous stability, aiming to solve the key problems of power matching, voltage matching and frequency synchronization between the microgrid and the main grid. The results show that these strategies can not only effectively improve the energy exchange efficiency between the microgrid and the main grid, realize the optimal energy allocation, but also significantly enhance the security and stability of the power system. Especially in dealing with emergencies and emergency situations, the synchronous operation control strategy can improve the strain capacity and disaster resistance capacity of the power system, and provide a strong guarantee for the power supply and social stability of public service facilities.
Keywords：Microgrid;grid-connected operation;synchronous stability
目 录
摘要 I
Abstract II
一、绪论 1
（一）研究背景及意义 1
（二）研究目的和内容 1
（三）国内外研究现状 1
二、微电网相关概述 3
（一）微电网的定义 3
（二）微电网的定义 3
（三）微电网的组成 3
三、并网运行对电力系统安全稳定运行的意义 5
（一）提高电力系统的可靠性 5
（二）优化电源配置和共享 5
（三）促进可再生能源的利用 5
四、微电网并网运行中的同步稳定性问题分析 7
（一）线路阻抗不匹配 7
（二）频率不匹配 7
（三）相位同步困难 7
（四）设备兼容性差 8
五、微电网并网同步稳定性提升策略 9
（一）采用阻抗匹配技术 9
（二）频率跟踪与调整 9
（三）预同步控制 9
（四）设备选型与测试 10
结 论 11
参考文献 12
