CAJ | 학술논문

低频振荡已成为严重威胁互联电网安全稳定运行的突出问题。从第1次提出低频振荡的概念到目前为止，涌现了许多新的和改进的分析方法去解决这个问题。现阶段，广域测量系统的出现又为更好地在线监视低频振荡提供了新的技术手段。从振荡机制、分析方法和防控措施等几个方面较为系统地总结了低频振荡研究领域的方法和成果。鉴于目前电网发展迅速，低频振荡仍然是威胁电网安全稳定运行的重要因素，为促进低频振荡防控新技术的工程应用，提出包括强迫振荡源搜索、谐振机制研究、辨识方法综合应用、新型控制器研制等7个需要重点关注研究问题。
저빈진탕이성위엄중위협호련전망안전은정운행적돌출문제。종제1차제출저빈진탕적개념도목전위지，용현료허다신적화개진적분석방법거해결저개문제。현계단，엄역측량계통적출현우위경호지재선감시저빈진탕제공료신적기술수단。종진탕궤제、분석방법화방공조시등궤개방면교위계통지총결료저빈진탕연구영역적방법화성과。감우목전전망발전신속，저빈진탕잉연시위협전망안전은정운행적중요인소，위촉진저빈진탕방공신기술적공정응용，제출포괄강박진탕원수색、해진궤제연구、변식방법종합응용、신형공제기연제등7개수요중점관주연구문제。
Low frequency oscillation （LFO） severely threatens the secure and stable operation of interconnected power grids. Since the appearance of the concept of LFO there are lots of analysis approaches to solve this problem. At present wide area measurement system （WAMS） provides new technical manner for better on-line monitoring of LFO. The authors systemically summarize the approaches and results of LFO research in the aspects of oscillation mechanism, analysis methods and measures to prevent and control LFO. In view of rapid development of interconnected power grid, LFO is still an important factor threatening security and stability of power grids. To promote engineering application of new techniques to prevent and control LFO, several problems, which is to be pay special attentions to, such as searching forced oscillation source, research on LFO, comprehensive application of identification methods, development of novel controller and so on are proposed.