瞬時無功理論在SVC無功功率檢測中的應(yīng)用

摘要：傳統(tǒng)的根據(jù)無功功率的定義來計算SVC系統(tǒng)中的無功功率的方法難以滿足快速響應(yīng)要求，因此本文采用瞬時無功理論來實現(xiàn)SVC系統(tǒng)中無功功率的計算和檢測。分析了瞬時無功理論的原理，在此基礎(chǔ)上推導(dǎo)出SVC系統(tǒng)中瞬時無功功率的計算，然后采用滑動平均窗的方法實現(xiàn)對無功功率的檢測。通過仿真實驗實現(xiàn)SVC系統(tǒng)無功功率的計算和檢測，仿真結(jié)果表明算法能快速有效地檢測SVC系統(tǒng)中無功功率，為設(shè)計SVC中無功功率的監(jiān)測和控制系統(tǒng)提供理論依據(jù)和實現(xiàn)方法。 敘詞：瞬時無功理論，靜止無功補償器（SVC），無功功率檢測 Abstract：The traditional methods based on definitions of reactive power can not fulfill the demand, so the paper employs the instantaneous reactive power theory to detect the reactive power in SVC system. The paper analyses the principle of instantaneous reactive power theory, and deduces the formula to calculate the instantaneous reactive power in SVC system, and employs a sliding window to calculate the average reactive power. The paper applies the new method by simulation, the results of which show that the method is efficient in detecting reactive power in SVC system and thus provides application in designing the monitor and control system of SVC. Keyword：instantaneous reactive power, Static Var Compensator, reactive power detection