新能源电力系统同步稳定问题及分析思路探讨
Definition and mechanism analysis of synchronous stability of new energy power system
高比例新能源电力系统的建设，逐渐奠定了同步机-变流器互联的大电网运行格局。同步稳定作为大电网运行的基础至关重要，同步机-变流器互联系统同步稳定机理尚不清晰。为此，简要回顾了电力系统同步稳定的研究现状，以简单的同步机-变流器两机系统为例明确了互联系统存在的同步稳定问题，从电流源视角提出变流器和同步机的统一同步机制表征方法，并以此为基础拓展到多同步机-多变流器互联系统，并定义其同步稳定为电流矢量的相位锁定，对互联系统的同步稳定机理和演变规律进行了梳理和简要分析，并阐述了现有方法在互联系统的同步稳定分析中的应用思路。
发电、发电厂变压器、变流器、电抗器电工基础理论
同步机-变流器互联系统同步稳定统一同步机制多时间尺度
庄可好,辛焕海.新能源电力系统同步稳定问题及分析思路探讨[EB/OL].(2022-09-01)[2025-09-26].https://chinaxiv.org/abs/202208.00068.点此复制
The construction of a high proportion of new energy power system has gradually laid a large grid operation pattern of synchronous machine converter interconnection. The access of large-scale power electronic equipment has profoundly changed the synchronization characteristics of the power system. As the basis of large power grid operation, synchronous stability is very important, while the synchronous stability mechanism of new energy power system interconnected by synchronous machine and converter is not clear. Therefore, the research status of synchronous stability of power system is briefly reviewed. Taking a simple synchronous machine converter two machine system as an example, the synchronous stability problems of interconnected system are clarified, and the unified synchronization mechanism of converter and synchronous machine is proposed. Based on this, the definition of synchronous stability of interconnected system is given, and the synchronous stability mechanism and evolution law of interconnected system are briefly analyzed, The application of existing methods in the synchronous stability analysis of interconnected systems is also described.
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