hv基于LabVIE的电力系统继电保护计

1、manipulator is now used as a industrial robots in use, the control objectives often appear often in industrial automation. industrial automation technology has gradually matured, as mature a technology line has been rapid development in industrial automation as a separate subject. manipulator applic

2、ation began to filter into welding, logistics, mechanical processing, and other industries. especially at high or very low temperatures, full of poisonous gases, high radiation case, robot in similar circumstances showed great use also brings great convenience to the staff. precisely because of this

3、 robot to get people's attention began to be a high degree of development. labor rates, working conditions, labor intensive aspects of promoting development. both at home and abroad to develop the plc (programmable logic controller) is in various special circumstances and under special condition

4、s set for mechanical devices. now turned on the development of the microelectronics automatic control technology and the rapid development of the trains, the success of plc hardware software and simulation control win big and successful development, now continues to develop as a factory automation s

5、tandards. because robots are good development of the technology makes a good optimization of productive capital, and robot shows this unique advantages, such as: has good compatibility, wide availability, hardware is complete, and programming that can be mastered in a short time, so in the context o

6、f industrial plc applications became ubiquitous. manipulator in many developed country agriculture and industry has been applied, such as the use of mechanical harvesting large areas of farmland, repeated operations on the high-speed line that uses a robotic arm, and so on. today, the high level of

7、automation combined with restrictions on the manipulator development level is slightly lower than the international. the design is mainly arm welding machine by plc automation control. this of design let designers on in school by learn of has a must of consolidation, understand has some usually didn

8、't opportunities awareness in world range within some leading level of knowledge has has must awareness, hope designers can in yihou of design in the can success of using in this design in the proceeds of experience 1.2 manipulator in both at home and abroad of research profile automation mechan

9、ical arm research began yu 20th century medium-term, after years with with computer and automation technology of development, makes mechanical arm on the grand stage of industrial automation and shine, gradually became an industrial evaluation standards, and its importance can be seen. now original

10、robotic arm spent most of mass production and use on the production line, which is programmed robotic arm. as the first generation of manipulator position control systems main features, although not back several generations that can detect the external environment, but can still successfully complet

11、e like welding, painting, delivery as well as for materials simple movements. second generation mechanical arms are equipped with sensors and manipulators have the environment there is a certain amount of "sense", when the mechanical arm is to use the program as a basis. difference is that

12、 the robot begand国内图书分类号：tm773国际图书分类号.：621.3工学硕士学位论文基于 labview 的电力系统继电保护设计硕 士 研 究 生： 刘 琳导 师： 荣雅君 教授申 请 学 位 级 别： 工学硕士学 科 、 专 业： 电力系统及其自动化所 在 单 位： 电气工程学院授 予 学 位 单 位： 燕山大学ion to ferric ion, trivalent iron ions and thiocyanate reaction of orange-red ferric thiocyanate complexes. determination of the abs

13、orbance at the wavelength of 500nm. quantitative compared with standard series. 2, reagent hydrochloric acid solution (10mol/l): accurately measure 83.3ml in concentrated hydrochloric acid, diluted with water to l00ml. and mix. hydrogen peroxide (30%). trichloromethane + methanol (7+3) mixed solvent

14、s: methanol mixed amounts of chloroform and 30ml 70ml. ferrous chloride solution (3.5g/l): weigh accurately 0.35g ferrous oxide (fecl2 4h20) in brown 100 ml volumetric flask, add water, dissolves, add 2ml hydrochloric acid solution (10mol/l), diluted with water to scale (the solution in the refriger

15、ator 10 storage stability in at least 1 years). potassium thiocyanate solution (300 g/l): weighing 30 g potassium thiocyanate, adding water dissolves to 100ml (the solution in the refrigerator 10 storage stability more than 1 year). standard stock solution of iron (1.0g/l): weighing 0.1000g reduced

16、iron powder from 100ml beaker, add 10 ml of hydrochloric acid (10mol/l), 0 5 ml1ml hydroperoxide (30%) dissolved in boiling for 5 min on the furnace to remove the excess hydrogen peroxide. after cooling to room temperature moves into a 100 ml volumetric flask. dilute to scale . and mix. per ml of th

17、is solution corresponds to 1.0mg. standard iron solution (0.0l g/l): 1.0 ml pipettes drawn iron with standard stock solution (1.0mg/ml) in l00ml in a volumetric flask, add chloroform + methanol (7+3) mixed solvents dilute to scale, mixing, per ml of this solution corresponds to 10.0 g g of iron. 3,

18、instruments spectrophotometer.manipulator control mode and programmable controllers introduction 2.1 select discussion with manipulator control 2.1.1 classification of control relays and discrete electronic circuit can control old industrial equipment, but also more common. mainly these two relative

19、ly cheap and you can meet the old-fashioned, simple (or simple) industrial equipment. so he can see them now, however these two control modes (relay and discrete electronic circuits) are these fatal flaws: (1) cannot adapt to the complex logic control, (2) only for the current project, the lack of c

20、ompatibility and (3) not reforming the system with equipment improvements. spring for the development of china's modern industrial automation technology the substantial increase in the level of industrial automation, completed the perfect relay of the computer too much. in terms of controlling t

21、he computer showed his two great advantages: (1) each of the hardware can be installed on one or more microprocessors; (2) the official designer of the software writing content control is all about. now in several ways in the context of industrial automation can often be seen in three ways: (1) prog

22、rammable logical controller (referred to as ipc); (2) distributed control system (dcs for short), and (3) the programmable logical controller (plc for short). 2.1.2 plc and the ipc and dcs contrast contrast 1, each of the three technologies of origins and development requirements for fast data proce

23、ssing makes it invented the computer. the men brought in terms of hardware there, using a high level of standardization, can use more compatibility tools, is a rich software resources, especially the need for immediacy in operational systems. so the computer can effectively control is used to contro

24、l and meet its speed, on the virtual model, real-time and in computational requirements. distributed system started with a control system for industrial automatic instrument used to control, whereas now it is successfully developed into industrial control computer used as a central collection and di

25、stribution system and transition of distributed control system in analogue handling, loop control, has begun to reflect the use of a huge advantage. though distributed system has great advantages in loop regulation, but only as a means of continuous process control. optimization of plc is the corres

26、ponding relay needs was born, its main use in the work order control, early primary is replaced relay this hulking system, focused on the switch controlling the running order of functions. marked by the microprocessor in the early 1970 of the 20th century emerged, micro-electronics technology has de

27、veloped rapidly, people soon microelectronics processing technology will be used in the programmable logical controller (that isclassified index: tm773u.d.c.: 621.3dissertation for the master degree in engineeringdesign of relay protection inpower system based onlabviewcandidate:supervisor:academic

28、degree applied for:specialty:university:liu linprof. rong yajunmaster of engineeringpower system and automationyanshan university燕山大学硕士学位论文原创性声明本人郑重声明：此处所提交的硕士学位论文基于 labview 的电力系统继电保护设计，是本人在导师指导下，在燕山大学攻读硕士学位期间独立进行研究工作所取得的成果。据本人所知，论文中除已注明部分外不包含他人已发表或撰写过的研究成果。对本文的研究工作做出重要贡献的个人和集体，均已在文中以明确方式注明。本声明的法律结果

29、将完全由本人承担。作者签字：日期：年月日燕山大学硕士学位论文使用授权书基于 labview 的电力系统继电保护设计系本人在燕山大学攻读硕士学位期间在导师指导下完成的硕士学位论文。本论文的研究成果归燕山大学所有，本人如需发表将署名燕山大学为第一完成单位及相关人员。本人完全了解燕山大学关于保存、使用学位论文的规定，同意学校保留并向有关部门送交论文的复印件和电子版本，允许论文被查阅和借阅。本人授权燕山大学，可以采用影印、缩印或其他复制手段保存论文，可以公布论文的全部或部分内容。保密，在年解密后适用本授权书。本学位论文属于不保密。（请在以上相应方框内打“” ）作者签名：导师签名：日期：日期：年年月月日

30、日摘摘要要继电保护对电力系统的安全稳定运行起着至关重要的作用。电力系统的飞速发展对继电保护不断提出新的要求，电子技术、计算机技术与通信技术的突飞猛进又不断地促进了继电保护技术的发展。继电保护技术未来将向着计算机化，网络化，智能化，保护、控制、测量和数据通信一体化的趋势发展。虚拟仪器(virtual instrument，简称 vi)是仪器技术与计算机技术深层次的结合。它是运用应用程序将计算机与功能化模块硬件结合起来，用户可以通过友好的图形界面来操作这台计算机，利用计算机来管理仪器、组织仪器系统，最终达到取代传统电子仪器的目的。虚拟仪器实际上是软硬件结合、虚实结合的产物，它充分利用最新的计算机技

31、术实现并扩展了传统仪器的功能。本文将虚拟仪器技术应用于电力系统继电保护中，以计算机和阿尔泰usb2002 数据采集卡为主要硬件，以图形化编程软件 labview 为开发平台，构建了一个用于实现信号的采集与信号分析的多功能虚拟继电保护系统，并在此系统的基础上对零序保护、距离保护和纵联差动保护进行了仿真实验。实验结果表明该系统具有以下功能：可实现多通道数据的采集，数字滤波，信号分析和计算，以及数据的存储和对历史数据的复现，线路的零序保护、距离保护以及差动保护能够迅速、可靠动作。此外，该系统在减低设备成本的同时，还具有人机界面友好，维护方便和功能扩充容易的优点。该系统在电力系统试验中充分体现了方便、

32、快捷、实用等优势。关键词电力系统；继电保护；虚拟仪器；labview；数据采集卡i燕山大学工学硕士学位论文abstractthe relay protection plays an important role in the power system security.the rapid development of power system has new request to the relay protection,and the rapidly progress of the electronic technology, computer technology andcommunica

33、tion promotes the development of relay protection unceasingly. therelay protection technology will tend to computerized, networked andintellectualized, and will integrate protect, control, measurement with datacommunication.the virtual instrument is the deeply combination of the instrumenttechnology

34、 and the computer technology. it combines computer with thefunctional module hardware using application program. user can not onlymanipulate the computer through friendly graphical interface, but also manageinstrument control and organization instrument system. it can finally achieve thegoal of subs

35、titution tradition electronic instrument. in fact, the virtual instrumentis the union of software and hardware, and the union of virtual and actual. itfully uses the newest computer technology to complete and expand the functionof traditional instrument.this paper applies the virtual instrument to t

36、he relay protection. it sets up asystem of virtual relay protection with the function of data acquisition and signalanalysis, based on computer and art usb2002 data acquisition card andsoftware of labview. a simulation experiment of zero-sequence protection,distance protection and pilot differential

37、 protection based on virtual instrumentis done. the experiment results show that the system includes the multi-channelssignal acquisition, digital filter, signal processing and calculation, as well assignal memory and recall. the line zero-sequence protection, distance protectionand differential pro

38、tection can operate rapidly and reliability.reducing the cost of the equipment, the system can also provide a friendlyiiabstracthuman-machine interface. in addition, it is convenient for the systemmaintenance and function expansion. it is also convenient to the systemmaintenance and function expansi

39、on. the system has got a good verification andshows the superior performances in the of the power system.keywords power system; relay protection; virtual instruments; labview;data acquisition cardiii燕山大学工学硕士学位论文iv目目录录摘要 ·············&#

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41、183;················································ abstrac

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44、3;····· 第 1 章 绪论 ···········································

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46、······· 11.1 继电保护概述·········································

47、·············································· 11.2 虚拟仪器概述··

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51、83;·················· 21.2.2 国内外发展现状 ·····························

52、;················································ 31.2.3 虚拟仪

53、器技术的意义 ·················································

54、;···················· 41.3 本课题的研究意义 ···························&#

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56、183;· 51.4 本文的研究内容··············································&

57、#183;···································· 6第 2 章 数字滤波器及计算机算法 ··········

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59、;····· 72.1 数字滤波器 ···········································

60、;··············································· 72.1.1 数字滤波器概述 &

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62、#183;·························· 72.1.2 数字滤波器分类 ····················

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64、83;······ 82.1.3 数字滤波器的传统设计方法 ········································

65、··············· 102.2 正弦函数算法·································

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67、;·· 112.2.1 采样值积算法 ·············································&

68、#183;································· 122.2.2 导数算法··············

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70、······················· 142.3 傅氏算法 ·························

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72、················· 162.4 保护功能算法·······························

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74、;···· 172.4.1 移相算法···········································

75、3;··········································· 172.4.2 序分量算法····&#

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79、·············· 182.4.4 相电流突变量算法 ·································

80、······································ 202.5 各种算法的比较·········

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84、3;··············· 22第 3 章 系统硬件 ································&#

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86、183;······· 233.1 采集卡的概述········································&

87、#183;············································ 233.1.1 usb 接口的优点 ··

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89、······················ 233.1.2 采集卡的性能和技术指标 ························

90、83;·································· 243.1.3 采集卡的主要组成 ············

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92、83;········ 253.2 采集卡的工作原理 ·······································

93、;······································ 25v燕山大学工学硕士学位论文3.2.1 a/d 工作模式 ······

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100、#183; 273.3 采集卡的驱动程序安装 ··············································&

101、#183;······················ 283.3.1 安装步骤 ·························

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103、;··········· 283.3.2 安装结果确认····································&#

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106、式驱动程序 ·················································

107、·························· 303.4.2 外挂式驱动程序 ·····················&

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109、#183;··· 313.5 本章小结 ············································&

110、#183;··············································· 32第 4 章 系统的软

111、件 ·················································

112、3;···································· 334.1 labview 简介 ··········

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114、3;······················ 334.1.1 labview 的概念 ························&

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116、2 labview 软件的特点 ···············································&#

117、183;················· 344.1.3 labview 的组成部分 ····························

118、83;···································· 354.1.4 基于 labview 的虚拟仪器设计方法 ········

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121、183; 384.2.1 相电流突变量元件 ··············································&#

122、183;························ 384.2.2 功率方向继电器 ······················

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125、#183;····································· 424.2.4 故障类型的判断 ·········&#

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129、183;········· 48第 5 章 基于 labview 的继电保护设计 ···································

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132、183;··· 495.2 数据采集及滤波的设计 ···········································&#

133、183;························· 495.3 纵联差动保护的设计 ·····················

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135、83;· 525.4 零序保护与距离保护的设计 ·············································&

136、#183;··············· 555.5 实验步骤 ··································&