基于暂态能量函数的核电机组接入电网暂态稳定性研究  

Study on Transient Stability of Nuclear Power Plant Connected to Power Grid Based on Transient Energy Function

作　　者：罗恒[1] 刘涤尘[1] 史秋芸[1] 孙文涛[1] 赵洁[1] 汪如松[2] 杨小明[1] 

机构地区：[1]武汉大学电气工程学院,湖北省武汉市430072 [2]中南电力设计院,湖北省武汉市430071

出　　处：《电网技术》2013年第1期119-125,共7页Power System Technology

基　　金：国家自然科学基金项目(51077103);中央高校基本科研业务费专项基金资助(2011207020200011)~~

摘　　要：针对核电机组接入电网的暂态稳定性进行了研究。利用电网动态等值建模方法,以核电机组为研究系统,其余部分为外部系统,将电网等值为2机系统。基于暂态能量函数法,对核电机组接入电网的暂态稳定性进行了仿真分析,并与时域仿真计算结果进行了比较验证。结果表明,等值模型能够较好地反映系统在受到扰动后的动态响应,基于暂态能量函数法分析结果与时域仿真分析结果吻合,且计算快速有效,所用方法能正确反映电网和核电机组暂态稳定状态。核电机组会受到电网扰动的影响,只要扰动清除迅速,系统和核电机组均可保持稳定运行。The transient stability of nuclear power plant connected to power grid is researched. Using dynamic equivalent modeling for power grid and taking nuclear power plant as research object and regarding the rest of the whole system as external system, the power grid is equivalent to a two-machine system. Based on transient energy function, the transient stability of nuclear power plant connected to power grid is simulated and the obtained results are compared with the results obtained from time-domain simulation to verify the proposed model. Verification results show that the proposed equivalent can well reflect the dynamic response of the system while it is disturbed; the simulation results based on transient energy function conform to those from time-domain simulation, however the former is more rapid and effective, thus the utilized method can correctly reflect transient stability of nuclear power plant and power grid; nuclear power plant may be affected by power grid disturbances, and the stable operation of both power grid and nuclear power plant would be sustained so long as the disturbance could be fast cleared away.

关 键 词：核电机组接入电网 动态等值 暂态能量函数 暂态稳定 

分 类 号：TM853[电气工程—高电压与绝缘技术]