科技通报
科技通報
과기통보
BULLETIN OF SCIENCE AND TECHNOLOGY
2014年
5期
148-151
,共4页
单相光伏发电系统%孤岛检测%输出电能变动法%负载性质扰动
單相光伏髮電繫統%孤島檢測%輸齣電能變動法%負載性質擾動
단상광복발전계통%고도검측%수출전능변동법%부재성질우동
single- phase photovoltaic power generation system%islanding detection%output power variation method%load property disturbance
针对传统的单相光伏发电系统的孤岛效应检测算法还存在检测速度慢、效果不好等问题，本文提出一种基于输出电能变动法的单相光伏发电系统的孤岛效应检测算法，首先对单相光伏并网逆变器进行数理化建模，然后将PCC谐波电压测量到的输出电能的变动量作为孤岛检测特征量进行孤岛检测。仿真试验结果表明，本文提出的基于输出电能变动法的单相光伏发电系统的孤岛效应检测算法克服了负载性质对扰动信号的平衡作用，检测效果良好。
針對傳統的單相光伏髮電繫統的孤島效應檢測算法還存在檢測速度慢、效果不好等問題，本文提齣一種基于輸齣電能變動法的單相光伏髮電繫統的孤島效應檢測算法，首先對單相光伏併網逆變器進行數理化建模，然後將PCC諧波電壓測量到的輸齣電能的變動量作為孤島檢測特徵量進行孤島檢測。倣真試驗結果錶明，本文提齣的基于輸齣電能變動法的單相光伏髮電繫統的孤島效應檢測算法剋服瞭負載性質對擾動信號的平衡作用，檢測效果良好。
침대전통적단상광복발전계통적고도효응검측산법환존재검측속도만、효과불호등문제，본문제출일충기우수출전능변동법적단상광복발전계통적고도효응검측산법，수선대단상광복병망역변기진행수이화건모，연후장PCC해파전압측량도적수출전능적변동량작위고도검측특정량진행고도검측。방진시험결과표명，본문제출적기우수출전능변동법적단상광복발전계통적고도효응검측산법극복료부재성질대우동신호적평형작용，검측효과량호。
In view that the island effect detection algorithm of the traditional single-phase photovoltaic power generation system exists the issues that the detection speed is slow and the effect is bad, this thesis proposes a island effect detection algorithm of the single-phase photovoltaic power generation system based on output power variation law, and firstly build the math and science model on single-phase photovoltaic grid-connected inverter, and then take the variation of the output power measured by PCC harmonic voltage measurement as the island detection features to carry out the island detection. Simulation results show that the island effect detection algorithm of the single-phase photovoltaic power generation system based on the output power variation presented in this paper overcomes balance effect that the load property is to the disturbance signal and has a good detection effect.
