特高压输电线路电晕放电.doc
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特高压输电线路电晕放电,摘要伴随着国家智能电网的提出，以及特高压输电网络的逐步形成，我国正在逐步扩大西电东送的规模，完善区域主干网络，加强发展特高压等大容量、高效率、远距离先进输电技术。与此同时，电网事故也在逐渐升级，其中绝缘事故发生的频率也显著增多，因此采用先进的检测技术，及时发现并预告可腀@鱿值纳璞妇刀窕窒螅杂谏璞傅奈ぁ⒓煨蓿苊...
内容介绍
此文档由会员 违规屏蔽12 发布
摘 要
伴随着国家智能电网的提出，以及特高压输电网络的逐步形成，我国正在逐步扩大西电东送的规模，完善区域主干网络，加强发展特高压等大容量、高效率、远距离先进输电技术。与此同时，电网事故也在逐渐升级，其中绝缘事故发生的频率也显著增多，因此采用先进的检测技术，及时发现并预告可腀@鱿值纳璞妇刀窕窒螅杂谏璞傅奈ぁ⒓煨蓿苊獾缤鹿示哂兄匾南质狄庖濉Ｎ耍疚目沽嘶谧贤饧觳夥ǖ奶馗哐故涞缦呗返缭畏诺缭谙呒嗖庀低车难芯俊�
在本文的第一部分，主要针对气体放电理论进行了探讨与研究，并详细地介绍了气体放电的基本条件和放电形式，特别是紫外检测技术的原理与应用以及利用紫外传感器检测设备绝缘状态的独特优势。
在本文的第二部分，主要设计了一种具有在线监测功能的特高压输电线路电晕放电检测系统。并重点阐述了本实验系统的构成，以及各个模块的作用和软件实现方式，包括紫外传感器及其驱动电路，温湿度传感器SHT71的特点及其数据采集。并详细地探讨了GPRS在电力系统中的应用与组网方式，以及如何利用LabVIEW完成上位机监控软件的设计、与下位机GPRS DTU的数据通信。
此外，本文着重开展了特高压输电线路绝缘故障的评估方法研究，针对紫外传感器的响应脉冲信号，通过统计分析，完成了对实验数据的前期处理以及后期对信号模型的AR功率谱分析，利用对其功率谱分析的结果，为判断设备绝缘状况提供一种新参考；深入研究了一种基于模糊推理的设备绝缘状态评估新方法，给出了具体的绝缘状态指数数值，为线路维护人员提供了一定参考依据。
最后，通过实验验证，本文所研究的电晕放电在线监测系统具有较好的抗干扰能力，响应速度快，具备远程通讯、实时在线等特点。针对具体的实际工程应用，还需进一步研究与探讨。
关键词：特高压；电晕放电；在线监测；LabVIEW；GPRS
Abstract
With the proposed of Intelligent Power System, UHV transmission network has been gradually formed. Our country is gradually expanding the scale of power transmission from west to east and improving the regional backbone network to enhance the development of the transmission with advanced technology which has large capacity, high efficiency, long-distance and so on, such as UHV. But at the same time, there are more and more power grid accident flowing it. The frequency of insulation fault also increases everyday. So take advanced detection technique, timely discovery and fore notice those phenomenon which maybe characterized possible insulation deterioration of instrument, it have important reference value for the equipment maintenance, repair and also avoid power accident. On this basis, this paper carried out the research on one kind of online monitoring system which uses ultraviolet pulses number to characterize the condition of equipment insulation.
In the first part, it is a fundamental review of gas discharge theory that has been studied and researched in-depth, which contains its basic conditions, discharge forms, the principle of UV-detection technology and its practical application. At the end of this part, the great significance and unique advantages of testing the equipment’s insulation states based on the UV-technology is illustrated.
In the second part of this paper, a kind of corona discharge online monitoring detection system is introduced, especially its’ composition and the role of each module. Besides this, UV sensor and its’ drive circuit, the characteristics of temperature and humidity sensor SHT71 and its data collection are also discussed. What’s more, this paper not only discussed the application of GPRS in the power system and its networking mode, but also completed the PC monitoring software design with the LabVIEW and realized the communication between LabVIEW and lower computer.
In addition, through statistical analysis this paper completed the pre-processing of experimental data, and its’ power spectrum analysis of AR model at latter part. With the results, we have one new reference to judgment the equipment insulation. In another part of this paper, one kind of equipment insulation condition assessment method based on fuzzy inference is involved, which could provide us one concrete insulating state index values, it would be one important information for the equipment maintenance personnel.
Finally, with the experimental verification, the corona discharge monitoring system which is studied in this paper has many advantages, such as anti-interference ability, fast response, real-time online and so on. But it needs further study if we want to make it be useful for practical engineering.
Keywords: UHV; corona discharge; online monitoring; LabVIEW; GPRS
目 录
摘 要 I
Abstract III
目 录 V
Contents VII
第1章 绪论 1
1.1 课题研究的背景与意义 1
1.2 电晕放电检测技术的研究现状 2
1.2.1电晕放电检测技术的现状 2
1.2.1.1红外热成像技术 2
1.2.1.2超声电晕探测器 3
1.2.1.3基于紫外光谱的电晕放电探测技术 3
1.2.1.4紫外成像法 3
1.2.2 紫外检测法在国内外的发展状况 4
1.2.2.1 紫外检测法在国外的发展..
伴随着国家智能电网的提出，以及特高压输电网络的逐步形成，我国正在逐步扩大西电东送的规模，完善区域主干网络，加强发展特高压等大容量、高效率、远距离先进输电技术。与此同时，电网事故也在逐渐升级，其中绝缘事故发生的频率也显著增多，因此采用先进的检测技术，及时发现并预告可腀@鱿值纳璞妇刀窕窒螅杂谏璞傅奈ぁ⒓煨蓿苊獾缤鹿示哂兄匾南质狄庖濉Ｎ耍疚目沽嘶谧贤饧觳夥ǖ奶馗哐故涞缦呗返缭畏诺缭谙呒嗖庀低车难芯俊�
在本文的第一部分，主要针对气体放电理论进行了探讨与研究，并详细地介绍了气体放电的基本条件和放电形式，特别是紫外检测技术的原理与应用以及利用紫外传感器检测设备绝缘状态的独特优势。
在本文的第二部分，主要设计了一种具有在线监测功能的特高压输电线路电晕放电检测系统。并重点阐述了本实验系统的构成，以及各个模块的作用和软件实现方式，包括紫外传感器及其驱动电路，温湿度传感器SHT71的特点及其数据采集。并详细地探讨了GPRS在电力系统中的应用与组网方式，以及如何利用LabVIEW完成上位机监控软件的设计、与下位机GPRS DTU的数据通信。
此外，本文着重开展了特高压输电线路绝缘故障的评估方法研究，针对紫外传感器的响应脉冲信号，通过统计分析，完成了对实验数据的前期处理以及后期对信号模型的AR功率谱分析，利用对其功率谱分析的结果，为判断设备绝缘状况提供一种新参考；深入研究了一种基于模糊推理的设备绝缘状态评估新方法，给出了具体的绝缘状态指数数值，为线路维护人员提供了一定参考依据。
最后，通过实验验证，本文所研究的电晕放电在线监测系统具有较好的抗干扰能力，响应速度快，具备远程通讯、实时在线等特点。针对具体的实际工程应用，还需进一步研究与探讨。
关键词：特高压；电晕放电；在线监测；LabVIEW；GPRS
Abstract
With the proposed of Intelligent Power System, UHV transmission network has been gradually formed. Our country is gradually expanding the scale of power transmission from west to east and improving the regional backbone network to enhance the development of the transmission with advanced technology which has large capacity, high efficiency, long-distance and so on, such as UHV. But at the same time, there are more and more power grid accident flowing it. The frequency of insulation fault also increases everyday. So take advanced detection technique, timely discovery and fore notice those phenomenon which maybe characterized possible insulation deterioration of instrument, it have important reference value for the equipment maintenance, repair and also avoid power accident. On this basis, this paper carried out the research on one kind of online monitoring system which uses ultraviolet pulses number to characterize the condition of equipment insulation.
In the first part, it is a fundamental review of gas discharge theory that has been studied and researched in-depth, which contains its basic conditions, discharge forms, the principle of UV-detection technology and its practical application. At the end of this part, the great significance and unique advantages of testing the equipment’s insulation states based on the UV-technology is illustrated.
In the second part of this paper, a kind of corona discharge online monitoring detection system is introduced, especially its’ composition and the role of each module. Besides this, UV sensor and its’ drive circuit, the characteristics of temperature and humidity sensor SHT71 and its data collection are also discussed. What’s more, this paper not only discussed the application of GPRS in the power system and its networking mode, but also completed the PC monitoring software design with the LabVIEW and realized the communication between LabVIEW and lower computer.
In addition, through statistical analysis this paper completed the pre-processing of experimental data, and its’ power spectrum analysis of AR model at latter part. With the results, we have one new reference to judgment the equipment insulation. In another part of this paper, one kind of equipment insulation condition assessment method based on fuzzy inference is involved, which could provide us one concrete insulating state index values, it would be one important information for the equipment maintenance personnel.
Finally, with the experimental verification, the corona discharge monitoring system which is studied in this paper has many advantages, such as anti-interference ability, fast response, real-time online and so on. But it needs further study if we want to make it be useful for practical engineering.
Keywords: UHV; corona discharge; online monitoring; LabVIEW; GPRS
目 录
摘 要 I
Abstract III
目 录 V
Contents VII
第1章 绪论 1
1.1 课题研究的背景与意义 1
1.2 电晕放电检测技术的研究现状 2
1.2.1电晕放电检测技术的现状 2
1.2.1.1红外热成像技术 2
1.2.1.2超声电晕探测器 3
1.2.1.3基于紫外光谱的电晕放电探测技术 3
1.2.1.4紫外成像法 3
1.2.2 紫外检测法在国内外的发展状况 4
1.2.2.1 紫外检测法在国外的发展..
