核电机组MEC7000励磁系统建模分析

Analysis of MEC7000 Excitation System Modeling of Nuclear Power Unit

励磁系统精确建模是核电并网稳定计算分析的基础,针对MEC7000励磁系统建模工作在国内外鲜有报道的情况,通过现场实测和BPA仿真,提出了MEC7000励磁系统仿真建模的一般方法,解决了建模过程中励磁调节器输入输出接口参数的计算和励磁系统实测模型向BPA仿真模型的转换过程等关键问题,以此最终完成了国内首台MEC7000励磁系统的仿真建模工作。最后将建立的仿真模型进行空载小扰动校核,结果表明所建立的仿真模型能正确反映MEC7000励磁系统的实际特性,建模的精度可满足核电机组并网稳定计算的要求。

Accurate modeling of excitation system is the basis of grid connection stability calculation and analysis of nuclear powerunit. Aiming at the modeling work of MEC7000 excitation system which is rarely reported both at home and abroad, a general method ofMECT000 excitation system modeling and simulation is proposed, by field test and BPA simulation, which solves key problemsincluding the calculation of interface parameters of input and output of excitation regulator during the modeling process and theconversion process from field test model of excitation system to BPA simulation model and so on. Finally, the simulation model built isverified by No-load small disturbance. Result of which shows that the simulation model built can reflect correctly actual characteristicsof MECT000 excitation system and the modeling accuracy can meet the requirement of grid connection stability calculation of nuclearpower unit.