核电机组同期并网系统选型及设计探讨

Discussion on Type Selection and Design of Synchronous Parallel System of Nuclear Power Unit

同期并网系统是发电机组与电网并列操作的重要手段,它直接关系到机组的安全和系统运行的稳定。结合核电厂发电机自动准同期装置技术改造项目,对国内外不同品牌自动准同期装置的应用现状进行了分析调研,对同期新设备选型、系统设计等方面进行了论述,确保改造后的设备在性能、技术上都优于原有设备,为安全快速并网提供有力保证;同时也为今后其他电厂同期装置的换型改造工作提供借鉴。

Synchronous parallel system is an important mean for parallel operation of generating units and power grid,which is directly related to the safety of generating units and the stability of system operation.Combined with the technical transformation project of automatic quasi-synchronization device of generator in nuclear power plant,the paper analyzes the application status of different brands of automatic quasisynchronization devices both at home and abroad,discusses and investigates the selection of new equipment and system designs.It is ensured that the technical performance of equipment after transformation are better than the original ones,which provides a firm guarantee for safe and rapid grid connection and also serves a reference for the transformation of synchronous devices in other power plants in future.