1、I 摘摘 要要 随着经济的发展和人们生活水平的提高，各行各业对供电可靠性和供 电质量提出了更高的要求。由于配电网处于电网的末端，用户多为低压用 户，许多用电器的功率因数很低，且不带补偿装置，这给电网带来很大的 功率负担和额外线损，为了维护电力系统稳定、保证电能质量和安全运行， 对电网末端变压器进行就地无功补偿很有必要。本文利用专用三相电能专 用芯片 ATT7022B 为核心构成的采样控制器，实时检测电网的电压、电流， 有功、无功、功率因数，根据用电负荷情况，通过 51 单片机控制电容器组 的自动投、切，实现无功功率的无功补偿，并利用 12232 液晶显示器显示 当前的有功、无功、功率因数等参数
2、。 关键字：关键字：功率因数，无功补偿，ATT7022B，单片机 II Abstract Along with economy of the development and people live a horizontal exaltation, every trade put forward a higher request to the power supply credibility and the power supply quality.In order to going together with the bitter end that the charged barbed wir
3、e net is placed in charged barbed wire net, customer much is low-pressure customer, many powers factors which use an electric appliances are very low, and dont take repair device, this brings charged barbed wire net very big power burden with additional line , for the sake of maintenance electric po
4、wer system stability, assurance electric power quality and safety circulate, to the charged barbed wire net bitter end transformer carry on right on the spot without achievement the repair has a necessity very much.This text makes use of appropriation three mutually the chip ATT7022 of the electric power appropriation B is core constitute of sample controller, solid hour examine the electric voltage, electric current of charged barbed wire net, have a great achievement, have no achievement, pow
