特高压电网建设初期“三华”电网数模混合实时仿真试验研究

采用电磁暂态全数字实时仿真及直流输电物理仿真装置,建立2012水平年"三华"电网多回直流线路和特高压交流骨干网混合输电的数模仿真模型,模拟交流特高压联络线故障、直流闭锁故障和直流落点附近的交流故障,分析"三华"电网的稳定特性以及交直流系统间的相互影响。仿真结果表明,2012水平年"三华"电网安全稳定性能够满足《电力系统安全稳定导则》要求。

Digital-Analog Hybrid Real-Time Simulation for Primary Stage of North China-Central China-East China UHV Power Grid

The primary stage of UHVAC North China-Central China-East China interconnected power grid will be put into operation in 2012.Adopting all-digital real-time electromagnetic simulator and physical simulation device for HVDC power transmission,the digital-analog simulation model for hybrid power transmission by multi-infeed HVDC power transmission lines and UHVAC power network in target year 2012 is built to simulate faults occurred in UHVAC tie line,DC block fault and AC faults occurred near the position connecting HVDC multi infeed transmission line to UHVAC power grid,and to analyze stability characteristics of UHVAC North China-Central China-East China interconnected power grid as well as the interaction between HVDC and UHVAC systems.Simulation results show that in target year 2012 the security and stability of UHVAC North China-Central China-East China interconnected power grid can meet the demand specified in the Guide on Security and Stability for Power System.