Earthing Measurement The Research on the Neutral Flexible Grounding and Its Control Technique for Distribution Network

Discussion on Ground Resistance Controlling for 110 kV Substation

110kV变电所接地电阻控制探讨

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Two novel control systems of neutral-point ground impedance are designed with IGBT.

并采用IGBT控制技术，设计了有源和无源两种配电网中性点接地阻抗控制系统。

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IGBT Based Control System of Neutral-Point Grounding Impedance for Distribution Networks

基于IGBT的配电网中性点接地阻抗控制系统

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Introduces a system based on AT91RM9200 ( ARM9 Processor) which is applied in the new resonant grounding mode through the arc suppression coil.

文中介绍了一个基于AT91RM9200（ARM9）的消弧线圈接地控制系统。

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The explosion-proof , axial fun consists of explosion-proofing motor, fabellum and blasting tube, etc.

防爆 轴流风机由 防爆 电机 、 叶片、风筒等部件组成.

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Can be used in Zone 1 and 2 dangerous places.

1区、2区危险场所防爆镇流器,防爆电器箱.

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The starter realizes no-arc closing and breaking. It is a new type of intelligente explosion-proof apparatus.

该磁力起动器实现了无弧接通和分断, 解决了 防爆 电器运行中存在电弧的严重问题.

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For fireman on board vessel short rubber handle axe always fits in the fireman's suit.

适用于船舶上消防员用,消防斧一般配备于消防员装备中.

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This system supports a wide range of network office environment, user management, test management, internal and external examination, scores query etc function, thus greatly reducing the workload of examination.

本系统支持广域网下的办公环境，实现用户管理、考试管理、校内外考试、成绩查询等功能，从而大大减少考务人员的工作量。

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Combined with the actual situation of the academic management of Gansu Forestry Technological College, this system is studied and makes the school achieve the information management of the students' performance inquiry.

结合了甘肃林业职业技术学院教务管理的实际情况，实现了全校学生成绩查询的信息化管理。

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It also discusses the design and accomplishment of its eight functional modules log in, personal and public message, information modification and query, pictures and users management, points query.

系统的登录认证、私人留言、资料修改、资料查询、公共留言、照片管理、用户管理、成绩查询八大功能模块设计与实现方法；

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The paperless test system based on Computer Application Foundation has provided automatic organized and graded examination paper for the teacher and the examinee, and this paper brings forward their methods.

基于《计算机应用基础》无纸化考试系统为教师和考生提供了自动组卷、自动评卷、成绩查询等功能，并提出了进行自动组卷、自动评卷的方法。

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System management, candidate management, online examinations, on-line production of paper, control student examinations, papers approving centers, and other functions were included in this system.

本系统包括用户类别、权限管理、在线考试、在线制作试卷、控制考试、考生管理、考生成绩查询、试卷审批、系统管理九大功能。

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Its aim is to deploy courses content online, users can select the resources they need to download, exam, course Q, performance inquiries.

精品课程网的目标就是将教学内容在网上发布，用户则选择自己需要的课件资源进行下载、考试、课程答疑、在线交流、成绩查询等。

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Completion of the system functional design and database design, implementation of the online learning system online learning, performance check and other major functions.

完成了系统功能设计和数据库设计，实现了系统的在线学习、成绩查询等主要功能。

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The key modules for the systemis user log-on, question maintenance, test management, online testing, auto-auditing, score checking and tester management.

对整个系统的主要模块：用户登录、题库维护、试卷管理、在线考试、自动阅卷、成绩查询、考生管理等进行了详细设计，并给出实现算法。

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This system can satisfy the essential query of user on student information, enrolled course, and grading management with the user-friendly interface.

该系统基本满足了用户（校内学生、教师）学生信息查询、选修课成绩查询和成绩的管理，用户界面比较友好。

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Both for the students to check results, you can also provide teachers with results submitted to the service and performance analysis services.

既可以供学生进行成绩查询，也可以为教师提供成绩报送服务和成绩分析服务。

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To realize the information management, and complete the test for the candidates, the examination to remind and performance query etc. Function.

实现了考生信息管理，完成了对考生考试查询、考试提醒以及成绩查询等功能。

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B/ S mode is only used on part of moulds, including course-selecting, information announcement, and score enquiry online.

对于学生选课、信息发布、网上成绩查询等部分模块采用B/S模式，用户通过浏览器进行业务操作。

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