变电站高压电气设备在线绝缘监测系统的研究

发布时间：2018-05-14 16:17

本文选题：变电站 + 高压　；参考：《华北电力大学》2001年硕士论文

【摘要】： 本论文首先叙述了开展在线绝缘监测工作的重要性和国内外开展此项工作的现状和发展趋势。然后，提出了目前在线绝缘监测系统存在的问题和本文做的主要工作。本论文选择高压电容型设备作为在线监测的对象，专门研制了针对这类设备采用现场总线技术设计的在线监测系统。看重介绍了高压电气设备在线监测系统的构成，并在理论上分析了高压电容型设备的绝缘特点，给出了相应的数学模型，提出了基于傅里叶变换的数字波形分析法，对信号进行分析和计算，以此作为在线监测的基本方法。对高压电容型设备在监测中可能出现的误差进行了分析和判断。传感器是在线监测系统中的关键部件，文中特别介绍了对传感器的技术要求和设计特点。对在线监测系统中的通信部分文中做了详细论述。首先给出了现场总线技术的概念，论述了其特点，然后选择通信方案并给出应用要点。最后给出了上位机控制端和下位机现场智能化终端之间通讯软件的设计流程图。对在线监测系统的硬件部分和软件部分设计完成后，在实验室进行了低压模拟试验和模拟现场的高压试验及抗干扰试验。这些试验结果表明用现场总线技术设计的在线绝缘监测系统能够正确可靠地工作，监测结果是有效的。本文在在线绝缘监测领域做了一些工作，进行了有益的探索，其研究成果对推进我国绝缘在线监测工作具有实用意义。
[Abstract]:This paper first describes the importance and development of on-line insulation monitoring.
The current situation and development trend of this work are presented. Then, the on-line insulation monitoring system is put forward.
The existing problems and the main work of this article.
This paper chooses high-voltage capacitive equipment as the object of on-line monitoring.
The on-line monitoring system designed by fieldbus technology for such equipment is emphasized.
The composition of on-line monitoring system for electrical equipment is analyzed, and the high-voltage capacitive equipment is analyzed theoretically.
The characteristic of insulation is given, and the corresponding mathematical model is given, and the digital wave based on Fourier transform is proposed.
The method of shape analysis is used to analyze and calculate the signal as the basic method of on-line monitoring.
The errors that may occur in monitoring of high-voltage capacitive equipment are analyzed and judged.
The sensor is a key component in the on-line monitoring system.
The characteristics of the design and design.
The communication part of the on-line monitoring system is discussed in detail.
The concept of fieldbus technology is discussed, its characteristics are discussed, then the communication scheme is selected and its application is given.
Finally, the communication between the upper computer control terminal and the lower level intelligent terminal is given.
The design flow chart of the piece.
After the design of the hardware and software parts of the online monitoring system is completed, it is put into the laboratory.
Low pressure simulation test and simulated field high pressure test and anti-jamming test were carried out.
The results show that the on-line insulation monitoring system designed by fieldbus technology can work correctly and reliably.
As a result, the monitoring results are effective.
This paper has done some work in the field of on-line insulation monitoring, and has made useful explorations.
The research results are of practical significance for promoting the on-line monitoring of insulation in China.

【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2001
【分类号】：TM855

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