CAJ | 학술논문

水轮发电机组调节系统的调节品质已成为现代电力系统运行和控制的重要指标之一。本文研究了多台水轮发电机组共用尾水调压室流道结构及其相应的数学模型，数值仿真及实际录波分析的结果表明，多机之间的调节过程存在互相干涉的现象且可造成控制过程的振荡，通过数学模型分析进而得出大扰动下产生系统振荡的成因参数。其后以3台机组共用尾水调压室为例，通过分析包括流道水力结构的控制系统传递函数，选取水轮机调节系统为优化方向，设计了振荡控制器并为其选取了合适的参数，可抑制因多机共用尾水调压室水工结构而形成的调节振荡，实现动态过程的加速收敛与稳定。现场试验证明了控制器的有效性。
수륜발전궤조조절계통적조절품질이성위현대전력계통운행화공제적중요지표지일。본문연구료다태수륜발전궤조공용미수조압실류도결구급기상응적수학모형，수치방진급실제록파분석적결과표명，다궤지간적조절과정존재호상간섭적현상차가조성공제과정적진탕，통과수학모형분석진이득출대우동하산생계통진탕적성인삼수。기후이3태궤조공용미수조압실위례，통과분석포괄류도수력결구적공제계통전체함수，선취수륜궤조절계통위우화방향，설계료진탕공제기병위기선취료합괄적삼수，가억제인다궤공용미수조압실수공결구이형성적조절진탕，실현동태과정적가속수렴여은정。현장시험증명료공제기적유효성。
The regulating quality of hydro turbine generator governor system has become one of the impor?tant indicators in modern power systems. This paper presents multi hydro turbine generators sharing flow channel structure of tailrace surge tank and the corresponding mathematical model, the analysis results of mathematical simulation and actual recording indicate that the mutual interference phenomenon between multi hydro turbine generators exists and can cause control process oscillation during the regulating process. The parameters that cause oscillation in large disturbance are analyzed through mathematical model. In this paper,taking 3 hydro turbine generators which share flow channel structure of tailrace surge tank as an ex?ample,and by analyzing control system transfer function which includes the channel hydraulic structure,hy?dro turbine regulating system is selected as an optimize direction, and oscillation controller is designed with appropriate parameters in order to restrain regulating oscillation caused by such flow channel structure and implement acceleration of convergence and stability in dynamic control process. The field test proves the effectiveness of the proposed controller.