摘 要
在電力系統(tǒng)中，功率因數(shù)的提高是一項(xiàng)重要的技術(shù)工作，直接關(guān)系到輸電線路的電能損耗供電的經(jīng)濟(jì)性，供電質(zhì)量。功率因數(shù)的補(bǔ)償措施一直為人們所重視。研制高性能的功率因數(shù)裝置具有實(shí)際的社會(huì)，經(jīng)濟(jì)效益。
本文介紹了基于AT89C52控制的高精度低壓無功功率補(bǔ)償器。該控制器采用數(shù)字檢測電路來獲取電網(wǎng)電壓與電流的相位差;控制開關(guān)采用過零型固態(tài)繼電器，使投切控制實(shí)現(xiàn)等電壓投入，零電流切除；單片機(jī)AT89C52實(shí)現(xiàn)數(shù)據(jù)處理、輸入、輸出控制等功能。通過實(shí)驗(yàn)監(jiān)測功率因素分析，該控制器具有對電網(wǎng)沖擊小，響應(yīng)快，抗干擾能力強(qiáng)，精度高,可分相投切等優(yōu)點(diǎn)，適用于目前企業(yè)用戶進(jìn)行無功功率補(bǔ)償。
本文運(yùn)用AT89C52單片機(jī)，對電力系統(tǒng)中低壓無功功率進(jìn)行監(jiān)測和控制，使功率因數(shù)達(dá)到調(diào)整和優(yōu)化，提高了電力系統(tǒng)的供電質(zhì)量和經(jīng)濟(jì)運(yùn)行。

關(guān)鍵詞： 功率因數(shù) 補(bǔ)償器 電容器 AT89C52
















ABSTRACT

The article introduces passive power compensator based on AT89C52 controlling with high precision. It measures excess phase of voltage and circuit used digital circuit. The AC solid-state relay of passing zero is applied to the control switch. It is input when the voltage of the power system equals the voltage of the capacitor and elimination when the circuit is zero. A Microcomputer AT98C52 competes the Data process, input, output etc. The practical result shows the advantages of high precision, less influence on low-voltage power system, fast response, connecting capacitors with single-phase and the ability of anti-jamming. It is mainly used to compensate passive power in present factory and mine.
In the power-system, the raise of the power-factor is a important technologic work. It matters the utility and quality of the power-system. The method of power-factor has always been taking seriouslyby people. The research of the high-quality power-factor compensationhas great social and economic meanings.
This article utilizes the AT89C52 monolithic integrated circuit, thelow pressure reactive power carries on the monitor and the control tothe electrical power system in, enables the power factor to achievethe adjustment and the optimization, improved the electrical powersystem power supply quality and the economical movement.

Keywords： AT89C52 Power-factor Compensator Capacitor