【作者】 张海云；

【导师】 龙小乐； 肖创英；

【作者基本信息】 武汉大学 ， 机械工程， 2004， 硕士

【摘要】 在中性点不接地电网中，由于电磁式电压互感器(以下简称PT)饱和而引起的铁磁谐振是出现最频繁、造成事故最多的一种内过电压。近几年来，湖北沙市热电厂由于PT饱和引起的铁磁谐振过电压频繁发生。为了解决该地区PT饱和引起的铁磁谐脖电压的问题，与武汉大学电气工程学院合作，通过6kv的原型模拟试验，对湖北沙市热电厂厂用电系统在各种运行方式下激发PT饱和谐振过电压的可能性及谐振过电压的类型进行详细的研究，得出对湖北沙市热电厂厂用电系统运行具有指导性的结论。 目前我国采用的消谐措施都存在一定的缺陷，以致在实际电网中这种铁磁谐振事故仍然不断出现。本文研制用单片机控制的新型吸能型消谐器，该消谐器由吸能部分(消谐主回路)、8031为主的控制部分、计数显示和指示报警部分这三部分组成。通过模拟试验证明：单片机控制拉析型消吸型能消谐器完全能够满足消谐的要求，而且动作准确、可靠。新型吸能型消谐器能够有效记录消谐次数，能够正确区分系统发生单相接地和系统发生基频谐振，并在系统发生单相接地时发出报警信号。更多还原

【Abstract】 In ungrounded systems, PT saturation result in ferroresonance is a appear frequently and work accident sort of inner overvoltage. In close a few years, PT saturation result in ferroresonance overvoltage apear frequently in HuBei ShaShi power plan, For resolve PT saturation result in ferroresonance overvoltage, cooperate with Wuhan university Though, 6Kv and 10kV antitype simulation experimentation, Progress particular research in the probability of inspire ferroresonance and the type of ferroresonance over voltage in HuBei ShaShi power plan. Educe instruct conclusion taken on HuBei ShaShi power plan electric power systems run.Forward adoptive eliminate ferroresonance measure all have definite vice in our country, So as to ferroresonance overvoltage all the time appear in fruit electricity net. This paper develop an new type absorbed energy eliminate ferroresonance machine of single chip control, composed with absorbed energy part and take count of display part and indication and 8031 give priority to control. At the same time for check the work up to snuff in some years, our design examination button. Through simulation experimentation proved that new type absorbed energy eliminate ferroresonance machine can eliminate all sorts of ferroresonance and avoid the flaw of all sorts of eliminate ferroresonance measure.更多还原