【摘要】 讨论了燃气—蒸汽联合循环(CCPP)机组作为黑启动电源的可行性,分析了不同类型CCPP机组的黑启动能力。为验证其可行性,对150MW CCPP机组启动300MW燃煤机组的黑启动过程进行了仿真。采用Simulink计算了空充变压器时的励磁涌流,计算中采用了变压器饱和模型,并考虑了三相剩磁不平衡状态。采用EDSA软件计算大型电动机的启动以及孤岛运行中负荷投入的动态过程。基于仿真结果,提出了改善黑启动方案可行性的措施。仿真方法可以为黑启动方案的制定和现场试验提供依据。更多还原

【Abstract】 The paper discusses the black-start capability of different types of CCPPs and the feasibility to use them as black start units. The black starting of a 150 MW CCPP unit and a 300 MW steam unit is simulated. Simulink is used to calculate the excitation inrush currents associated with the transformer energisation, considering the saturation effects and the three-phase unbalance. The dynamic processes of starting large asynchronous motors and load pickup in an isolated system are calculated by EDSA. Based on the simulation results, the paper proposes countermeasures to improve the feasibility of black-start by CCPP. The models can be applied to the formulation of restoration plans and field testing.更多还原