CAJ | 학술논문

文中建立了包含四川220 kV及以上电压等级系统和主要互联省网等值系统的详细机电暂态仿真模型，在 BPA平台对2015年包含“疆电入川”直流的四川电网运行稳定性问题进行了全面计算和分析。通过负荷中心近区发生单重和多重故障时的暂态稳定计算，分析了逆变站单极、双极闭锁对四川电网安全稳定性的影响。进一步研究了枯期留电方式、系统负荷水平和受端系统强度变化情况下“疆电入川”特高压直流双极闭锁时系统安全稳定性。
문중건립료포함사천220 kV급이상전압등급계통화주요호련성망등치계통적상세궤전잠태방진모형，재 BPA평태대2015년포함“강전입천”직류적사천전망운행은정성문제진행료전면계산화분석。통과부하중심근구발생단중화다중고장시적잠태은정계산，분석료역변참단겁、쌍겁폐쇄대사천전망안전은정성적영향。진일보연구료고기류전방식、계통부하수평화수단계통강도변화정황하“강전입천”특고압직류쌍겁폐쇄시계통안전은정성。
A detailed electromagnetic simulation model, in which power systems in voltage grades of 220kV and above in Sichuan province and equivalent provincial power grids interconnected with Sichuan power grid are included, is established, and the overall calculation and analysis on operational stability of Sichuan power grid in 2015, considering the electric power transmitted from Xinjiang power grid to Sichuan power grid, are performed on BPA platform. Through transient stability calculation under single and multiple fault occurred in the region adjacent to load center, the impacts of monopolar and bipolar blocking faults occurred in inverter station on security and stability of Sichuan power grid are analyzed, and the security and stability of Sichuan power grid under following conditions, namely the variation of retained power in Sichuan power grid during the dry season, the variation of system load level and the variation of system strength, are further researched while the bipolar blocking fault occurred in UHVDC power transmission project from Xinjiang power grid to Sichuan power grid.