数字化背景下新型电力系统谐波溯源关键技术

Key Technologies for Harmonic Source Tracing in New Power System in Background of Digitalization

构建以新能源为主体的新型电力系统是能源电力行业推动“双碳”战略目标的关键举措。伴随多类型电力电子设备大规模接入系统,源网荷储谐波源交互影响,谐波污染加剧且复杂多变,呈现全局化特征,影响了电力系统优质可靠供电。文中聚焦多类型谐波源交互作用下的谐波来源追溯,深度融合先进数字技术在数据资源和智能协作的优势进行主导源头辨识和谐波贡献评估。首先,围绕谐波溯源概念,分析其在数字化背景下新型电力系统面临的新挑战和新机遇。然后,阐述了谐波溯源研究现状,指出关键技术的发展新需求。基于此,利用数字电网技术架构设计了云-边-端协同溯源策略。针对数字化背景下的新型电力系统,阐述了谐波源确定在数据采集、机理分析、协同应用等方面的主要技术。最后,展望了未来数字电力系统安全、可靠、灵活发展的技术方向。

Building the new power system with renewable energy as the main body is a key measure of the energy and power industry to promote the realization of the goal of“carbon emission peaking and carbon neutrality”.With the large-scale integration of multiple types of power electronic equipment into the system,the efficient collaboration of source-grid-load-storage has made the harmonic pollution intensify and become more complex and variable,presenting a globalized characteristic,which affects the high quality and reliable power supply of the power system.This paper focuses on the harmonic source tracing under the interaction of multiple types of harmonic sources,and deeply integrates the advantages of advanced digital technology in data resources and intelligent collaboration to carry out dominant source identification and harmonic contribution evaluation.First,around the concept of harmonic source tracing,the new challenges and opportunities faced by the new power system on the background of digitalization are analyzed.Then,the current status of harmonic source tracing research is elaborated,and the new development requirements of key technologies are pointed out.On this basis,a cloud-edge-end collaboration strategy of harmonic source tracing is designed by using the technical architecture of digital power grid.Under the background of digitalization,the main technologies of harmonic source tracing in data collecting,mechanism analysis,and collaborative application are described.Finally,this paper prospects the technology direction for the secure,reliable,and flexible development of digital power system in the future.