依托田湾核电站3、4号机组，针对俄罗斯设计院提出的4种暂态工况要求，应用ETAP（electrical transient analysis program）软件对其厂用电系统进行仿真。仿真结果表明，设计的厂用电接线方案能满足俄方对厂用电源暂态稳定性的要求。该ETAP暂态稳定分析报告得到了总设计方和业主的认可。此仿真结果填补了国内核电站电气暂态分析设计空白，实现了从静态估算向暂态稳定仿真的跨进。

Taking No.3 and No.4 units in Tianwan Nuclear Power Plant as examples, a simulation using ETAP software was performed on auxiliary power system, according to the four kinds of transient condition requirements proposed by Russian design institute. The simulation results show that the design of auxiliary power connection scheme can meet the requirements for power transient stability put forward by Russian party. The ETAP analysis report on transient stability has obtained a unanimous approval of the general designer and the owner. And the simulation results has filled the design gaps in electrical transient analysis for nuclear power plant in China, realizing a progress from static estimation to transient stability simulation.