导频振荡器 pilot frequency oscillator; pilot oscillator; pilot-frequency oscillator; pilotfrequencyoscillator
调频振荡器 fm oscillator; frequency modulated generator; frequency modulated oscillator; frequency modulation oscillator; frequency-modulated generator; frequency-modulated ocsillator; frequency-modulated oscillator
多频振荡器 multifrequency alternator; multifrequency generator; multiple frequency oscillator
高频振荡 hf oscillation; high frequency oscillation; high-frequency oscillation; higher-order of oscillation
高频振荡器 hfo high frequency oscillator; high frequency alternator; high frequency generator; high frequency oscillator (hfo); high frequency vibrator; high-frequency generator; high-frequency oscillator
On the base of the fujian power system that has the special configuration of " large power generator with small power system " in 2000 , constructs power system models of fujian and fujian interconnected with other parts , does a lot of calculation and analysis and simulation , researches the security mechanism and rule of the fujian special power system interconnected with large power system . the above connection can keep security and stability and can make obvious benefits , but when the transmission power reach to excessive quantity the main power grid will increases interconnected flow - in or flow - out exchange power load . the power operation state tended to instability ; the infirmable interconnection make s the damp infirmable 本文以2000年前后具有“大机组小电网”特殊结构的福建电力系统为背景,建立了福建电力系统及其与外部互联的数学模型,开展大量的仿真计算分析,研究了“大帆组小电网”电力系统与大容量电力系统互联偏弱的安全稳定性的机理和规律:前述互联可以安全稳定运行,取得显著效益,当传输功率达到一定量后,主网架增加了送出或吸收互联交换功率的负载,系统运行状态向稳定性水平有所下降的方向转移;联络偏弱使阻尼偏弱,联络线小幅低频振荡和大幅低频振荡易被激发,联络线一旦重载断开,系统高周或低调严重。