1000MW超（超）临界火电机组大频差下调频试验优化及应用

Experimental Research on Optimization of Primary Frequency Modulation Capability under Large Frequency Difference for 1000MW Ultra(ultra) Critical Thermal Power Unit

随着特高压的接入,大型火电机组参与调频的能力日益重要。1000 MW超(超)临界火电机组由于蓄热小,在电网出现大频差时一次调频能力较弱,不利于电网的稳定运行。针对上述问题,提出采用凝结水节流和锅炉主给水快速动作的方法来提高1000MW机组在大频差下的一次调频能力,首先进行特性试验,根据特性试验情况进行仿真,并设计了具体的优化逻辑,通过现场试验,验证了该方法的有效性。

With the access of extra high voltage, the ability of large thermal power units to participate in frequency modulation is becoming increasingly important. When there is a large frequency difference in the grid, because of the small heat storage, the primary frequency modulation ability of 1000 MW ultra(ultra) critical thermal power unit is weak, It is unfavorable to the stable operation of power grid. In view of the above problems, a method is presented to increase the primary frequency regulation ability of 1000 MW unit under large frequency difference by means of throttling and quick operation of water supply. Characteristic tests are carried out according to the characteristic test, the specific optimization logic is designed. The effectiveness of the method is verified by field tests.