發(fā)布時(shí)間：2018-04-01 18:17

  本文選題：調(diào)速器　切入點(diǎn)：水壓波動(dòng)　出處：《排灌機(jī)械工程學(xué)報(bào)》2017年08期

【摘要】：借鑒電力系統(tǒng)穩(wěn)定器超前相位補(bǔ)償?shù)乃枷?提出一種導(dǎo)葉超前相位補(bǔ)償方法,抑制水壓波動(dòng).利用傳遞函數(shù)模型,計(jì)算調(diào)速器控制輸出信號(hào)到水輪機(jī)進(jìn)口斷面水壓波動(dòng)的滯后相位角.引入水壓波動(dòng)信號(hào)作為相位超前補(bǔ)償環(huán)節(jié)的輸入信號(hào),相位補(bǔ)償環(huán)節(jié)的輸出與調(diào)速器PID輸出累加形成新的控制信號(hào),進(jìn)而對(duì)相位補(bǔ)償環(huán)節(jié)的參數(shù)設(shè)計(jì)問題進(jìn)行了分析.最后,設(shè)計(jì)仿真試驗(yàn)系統(tǒng)進(jìn)行仿真研究,結(jié)果表明:補(bǔ)償調(diào)節(jié)方式可以將導(dǎo)葉開度波動(dòng)的相位調(diào)制到具有一定超前相位角的信號(hào),雖然還不能達(dá)到預(yù)期設(shè)計(jì)的超前相位角,但機(jī)組暫態(tài)穩(wěn)定性明顯改善;采用這種補(bǔ)償調(diào)節(jié)方式時(shí),機(jī)組正常的有功調(diào)節(jié)趨勢(shì)不變,其調(diào)節(jié)速度加快.因此,通過抑制管道水壓波動(dòng)來改善水力機(jī)組暫態(tài)穩(wěn)定性的方法是有效的.
[Abstract]:Based on the idea of advanced phase compensation of power system stabilizer, a leading phase compensation method for guide vane is proposed to suppress the fluctuation of water pressure. The lag phase angle between the governor control output signal and the hydraulic pressure fluctuation at the inlet section of the turbine is calculated. The water pressure fluctuation signal is introduced as the input signal of the phase leading compensation link. The output of the phase compensation link and the output of the governor PID are accumulated to form a new control signal, and then the parameter design problem of the phase compensation link is analyzed. Finally, the simulation test system is designed and simulated. The results show that the compensation regulation can modulate the phase fluctuation of guide vane to the signal with certain leading phase angle. Although it can not reach the expected design advance phase angle, the transient stability of the unit is improved obviously. When this compensation regulation mode is adopted, the normal active power regulation trend of the unit is unchanged, and its regulating speed is accelerated. Therefore, the method to improve the transient stability of hydraulic unit by suppressing the fluctuation of pipeline water pressure is effective.
【作者單位】： 昆明理工大學(xué)電力工程學(xué)院;昆明理工大學(xué)冶金與能源工程學(xué)院;昆明理工大學(xué)建筑工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51579124,51469011)
【分類號(hào)】：TV734.1
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本文編號(hào)：1696702