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1、安徽工程大学毕业论文（设计）题目名称：电力负载的无功测控电路设计 题目类型： 毕业设计 学生姓名： 超哥 院（系）： 电气工程学院 专业班级： 电气102 指导教师： 还是超哥 时间： 2012年4月1日至2012年5月23日 目录毕业设计任务书.I文献综述II指导老师审查意见答辩会议记录评阅教师评语中外文摘要 安徽工程大学毕业设计(论文)任务书学院（系）电气工程学院 专业 电气工程及其自动化 班级 学生姓名 超哥 指导教师/职称 1. 毕业设计(论文)题目：电力负载的无功测控电路设计2. 毕业设计（论文）起止时间：2012年03月01日2012年6月10日3毕业设计(论文)所需资料及原始数据
2、（指导教师选定部分）1.基于MSP430系列单片机的智能无功补偿控制器 陈茂勇 郭西进2. 关于低压无功补偿装置的探讨 余兆荣 陈曦3. 配电系统无功补偿技术方案比较 王 强 聂军4.电网功率因数的测量及无功自动补偿控制 刘骏跃4毕业设计(论文)应完成的主要内容了解实际电力负载的功率因数低的特性，分析由此造成的供电与用户的影响与损失。运用学过的知识，用电压，电流互感器进行发电机与电网的电压.电流.功率及相位的测量。运用单片机作比较计算并进行无功补偿（并联电容）。5毕业设计(论文)的目标及具体要求5.1.配电系统无功补偿的分析；5.2. 配电系统无功功率的实用检测电路设计；5.3.无功补偿的投切
3、控制；5.4. 配电系统无功补偿的保护电路。6、完成毕业设计(论文)所需的条件及上机时数要求计算机图书馆的各种图书及杂志网上数据库上机150学时任务书批准日期 2012 年 03 月 01日 教研室(系)主任(签字) 任务书下达日期 2012 年 03月 11日 指导教师(签字) 龙从玉 完成任务日期 2012 年6月 10日 学生（签名） Anhui Polytechnic University Wen Wen Xian graduates of comprehensive stateTitle Name: Reactive power load measurement and contro
4、l circuit design Department: Electronic InformationProfessional-level classes: Instrument 10 601 Student Name: Chao ge Teach teachers: Long CongYu-teacher Completion Date :2012-5-3 Reactive power load measurement and control circuit design literature review Student: Chao ge Electronic Information In
5、structor: Long CongYu , Telecommunications Institute Fist. Introduction I wrote this article is to introduce the current status of power system and power compensation in power system problems. Mainly related to the power system reactive power compensation in the area. Reactive power load measurement
6、 and control circuit design literature review Low-voltage reactive power compensation reactive power load is an important part of compensation. Improve low-voltage compensation, not only can reduce the level of reactive power compensation on the pressure, but also improve the utilization of the user
7、 distribution transformers to improve power factor and voltage quality of the user, and can effectively reduce power losses, thus reducing electricity bills . Reactive power compensation and power supply departments of user benefit. Existing reactive power compensation device type a lot, but basical
8、ly by the detection unit, control unit, execution units, and power component. The task detection unit is detected from the network and network power factor directly or indirectly related to the parameters, and to give as gifts this parameter signals and control unit, the control unit to be compared
9、with the control target value. Make switching decisions. Implementation unit is based switching decisions by switching switch (AC Contactor) Control of capacitor switching, compensation to complete the task.Second, the main At present, the low voltage reactive power compensation devices are static a
10、nd dynamic compensation device compensation of two, the control method are: power factor control, reactive Power (or reactive current) control and other control methods. Static and dynamic reactive power compensation reactive power compensation. Static Var Compensator SVC means that when the reactiv
11、e changes, control changes to control the capacitor according to the group switching to achieve the required reactive power compensation, the response normally greater than 5 seconds. Capacitor switching is accomplished by the contactor, due to capacitor inrush current withstand capability and the d
12、ischarge time, capacitor grade, contactors operating frequency, life and other factors, so there is much to be desired: ( 1) there is a level of compensation, timing, and thus compensation accuracy, the time when the load changes frequently (such as rolling, high-power electric furnace, etc.), to fo
13、llow is not strong. (2) The input capacitor can be no surge. For contactor + reactor program, a larger increase in losses for capacitive touch device program, a high accident rate, but also a great influence on the life of the capacitor. (3) run noisy. (4) As part of the load control contactor coil is in the switching process, will produce sparks and high harmonics, resulting in interference, affect the compensation device reliability and service life. Static reactive power compensation equipment and some use of composite switch as the Closing and breaking circuit current component, which u
