文档介绍：青岛农业大学
毕业论文(设计)
题目: 电压互感器二次线路压降补偿器设计
姓名:
学院: 机电工程学院
专业: 电气工程及其自动化
班级:
学号:
指导教师:
2011 年 6 月 18 日
电压互感器二次线路压降补偿器设计
摘要
因为电压互感器二次回路压降会引起电力计量的误差,甚至影响电力系统的正常运行。电压互感器二次回路压降误差是电力计量误差中的一部分,这部分误差所造成的经济损失通过补偿措施是可以有效挽回的。
本文首先对电压互感器二次压降的形成机理进行分析,并结合其与电能计量误差的关系,结合国内外相关文献资料得出相关结论。之后根据得出的结论分析各种降低二次压降的措施。对各种措施分析比较之后得出最适合的补偿措施,确定了以电压跟踪补偿原理设计的补偿装置,并说明其工作原理。针对负载变化可能引起的负载效应和出于对补偿精度的要求考虑,引入自适应补偿原理。最后建立相应的物理环境,验证了电压跟踪式补偿器的特点。
关键词:电压互感器;二次压降;自适应;补偿
The Secondary Loop Voltage Drop Mechanism of Voltage Transformers and Improved Schemes
ABSTRACT
May result in some errors during measuring the electric energy, and even threaten the regular operation of electric systems. The errors caused by the Secondary loop voltage drop can be regarded as a part in electric measurement errors. However, the financial loss caused by the errors can be saved effectively pensations.
At the very beginning, conduct an analysis about the mechanism of the Secondary loop voltage drop. And then, through researching the relationship between the secondary loop voltage drop and electric measurement errors as well as integrating relevant documents, draw relevant conclusion regarding this issue. Next, various alternatives about the secondary loop voltage drop will be analyzed according to the conclusions. After parison of different alternatives, an optimum method will be selected to solve the problem. Confirm that pensating device engineered according to Voltage tracking principle, and illustrate its principle. Further more, considering loading effect caused by loading change and the requirements pensation accuracy, introduce the pensation principle. In the end, corresponding physical environment will be established in order to verified the characteristics of voltage pensator
Key words: voltage transformer, secondary voltage drop, self-pensation
1引言
当今社会,随着科学技术的不断发展,一大批科技成果的问世不断给我们的生产和生活带来变革,我们面临着更多的机遇和挑战。技术上的变革,观念上的变革,思维方式上的变革无处不在。技术的进步也无时无刻不影响着社会的进步。
电力系统的高效运行同样关系着我们的生产和生活,为了提高电力系统的运行效率