In order to compensate for the capacitive charging power of transmission lines , control reactive power flow , stabilize operating voltage and restrict arc current , the shunt reactors are usually installed on ehv transmission lines , especially for uhv transmission lines 摘要超、特高压输电线路为了补偿线路的容性充电功率，控制无功潮流，稳定网络运行电压，限制潜供电流等，一般要安装并联电抗器。
On the basis of extensive reading and research of theory of the wavelet , it is presented a practical method based on odd theory of wavelet analysis to remove the white noises from transient fault current traveling waves of high voltage transmission line via multi - size analysis of wavelet 本文在广泛阅读和深入研究小波理论的基础上，论文提出了一种基于小波分析的奇异性理论对通过小波多尺度变换的高压输电线路故障电流暂态行波信号进行白噪声滤除的实用方法。
The accurate fault location of the fault position of high voltage transmission line is principal measure for improving safety and economic performance of the power restoration of line , cut down economic loss due to the failure , which has great social and economic interests <中文摘要> =高压输电线路故障点的准确定位是提高电网安全经济运行的主要措施，准确的故障定位可以减轻巡线负担，加快线路恢复供电，减小因停电而造成的经济损失，具有巨大的社会和经济效益。
The precise location of high - voltage transmission line fault is of great significance and practical engineering value . for years , general importance has been attached to the study of faults location by the network operation and management departsments and specialists . but owing to the short developmengt history of faults location techniques and the limits of related techniques , fault location devices with high precision are not widely used in practice . with the development of computer communication technology and the wide application of microcomputer - based protection devices with electric power system , it is possible to locate high - voltage transmission line faults precisely 多年以来，故障测距问题的研究一直受到电网运行、管理部门和专家学者的普遍重视。但由于故障测距技术本身发展的历史并不长和相关技术条件的限制，具有较高精度的故障测距装置在实际中的应用并不多。随着计算机通信技术的发展和微机保护装置在电力系统中的广泛应用，实现高压输电线路故障的准确定位已经成为可能。
( 5 ) according to the values measured practically , electromagnetic radiation has some affection to the environment within 25 m around the transmission lines at 500kv , but basically , the intensity around each scale voltage transmission lines mainly satisfy the standard in the scope as calculated above ( 5 ) 500kv高压输电线路两侧25m范围内对环境有一定的影响，但线路一般位于农村地带，对人群健康无重大影响。 220kv线路两侧4m内对环境有一定的影响， 110kv线路基本满足环保标准。
In the middle 1960s , it began to be applied in detecting the fault of electronic facility in foreign countries . in the 1970s , thermal instrument had been installed in helicopter to detect the connection of power line and the determinant standard about infrared test had been established . in the middle 1980s , ir technology had a comprehensive application on the fault of print circuit board ( pcb ) 国外应用红外技术检测电气设备故障始于六十年代中期，七十年代开始把热像仪装在面包车或直升机上对变电站设备或高压输电线路连接件故障做巡回检测，并分别制订出相应的技术规范或红外诊断故障判定标准。
According to the engineering practice and experience , designed a suit of debug method and flow for high - voltage transmission line microcomputer reclosing devices . 5 . according to the scheme , we have improved the microcomputer reclosing devices for many high - voltage transmission lines in hunan province , and get good effects 4 、论文根据工程的实际情况与实践经验,设计了一套高压输电线路微机重合闸装置的调试方法及流程5 、按本文提出的方案对湖南省多条高压输电线路微机重合闸装置进行了改进,运行效果良好。
Investigated the hardware and software of high - voltage transmission line microcomputer reclosing devices , and expounded its design ideology and main function . 3 . analyzed errors of auto - reclosing synchronization and offered the countermeasure for the errors ; analyzed the misoperation reason of the high - voltage line microcomputer reclosing device and discovered the root of errors and put forward three solutions ; compared the three methods and selected the best one to run in practice 3 、论文对自动重合闸检同期所存在的误区进行了分析与研究,为走出误区提供了对策;对高压输电线路微机重合闸装置所出现的误动作原因进行了分析研究,找到了问题的根源,提出了三种解决问题的方法,并对每种方法的利弊进行了比较,选取最优方案投入现场运行。
As the developing of electrical industry , more and more transmission lines and stations are built to meet the need of power system . in recent years , transmission lines " rebuilding is carried out in many cities and lead to electromagnetic radiation by high voltage transmission lines and stations . electromagnetic pollution has become a serious problem 随着我国电力工业的发展， 500 、 330 、 220 、 110kv高压架空输电线路和变电站(所)建设规模不断扩大，近年来许多城市进行供电电力网的改建扩建， 220 、 110kv变电站(所)由城市郊区逐渐迁建到市区， 220 、 110kv高压架空输电线路在城市公众活动场所和居民区星罗棋布，由高压输电线路产生的电磁辐射必然对环境造成污染。
The paper took high - voltage transmission line microcomputer reclosing devices as the research object and refered to lots of inside and outside data . after investigating the structure principle , hardware and software of the high - voltage line microcomputer reclosing device , and considering the engineering practice , the paper has done some research and improvement in the application of microcomputer reclosing devices 本文以高压输电线路微机重合闸装置为对象,在查阅了国内外文献资料的基础上,通过对高压线路微机重合闸结构原理和微机重合闸装置硬件及软件的研究,结合工程实际对微机重合闸装置在应用中存在的问题进行了研究和改进。
