基于波形比較的主動(dòng)配電網(wǎng)故障定位

 

龐清樂(lè)^1，2，馬曉玲²，魯高鵬²

（1 青島理工大學(xué) 信息與控制工程學(xué)院，山東 青島 266520；2 山東工商學(xué)院 信息與電子工程學(xué)院，山東 煙臺(tái) 264005）

 

    摘 要：主動(dòng)配電網(wǎng)中接入了大量分布式電源，導(dǎo)致很多傳統(tǒng)的故障定位方法失效，提出了基于波形比較的快速故障定位方法。該方法采用具有分布式控制功能的饋線終端設(shè)備實(shí)時(shí)檢測(cè)故障電流，當(dāng)檢測(cè)到故障電流時(shí)，將檢測(cè)點(diǎn)的故障電流與下游檢測(cè)點(diǎn)的故障電流進(jìn)行波形比較，實(shí)現(xiàn)故障定位。仿真結(jié)果表明，該方法在含分布式電源的主動(dòng)配電網(wǎng)發(fā)生單重故障和多重故障時(shí)均能實(shí)現(xiàn)正確故障定位。

    關(guān)鍵詞：主動(dòng)配電網(wǎng)；故障定位；波形比較；相關(guān)系數(shù)

    中圖分類號(hào)：TM773     文獻(xiàn)標(biāo)識(shí)碼：A     文章編號(hào)：1007-3175(2019)06-0005-05

 

PANG Qing-le^1,2, MA Xiao-ling², LU Gao-peng²

（1 School of Information and Control Engineering, Qingdao University of Technology, Qingdao 266520, China;

2 School of Information and Electronic Engineering, Shandong Institute of Business and Technology, Yantai 264005, China）

 

    Abstract: A large number of distributed generations access to the active distribution network, so as to result in the failure of many traditional fault location methods.This paper proposed a fast fault location method based on waveform comparison. This method adopted the feeder terminal units with distributed control function detect fault current in real time.When a feeder terminal unit detected the fault current, it compared the fault current waveform of local detection point with downstream detection point to realize fault location.The simulation results show that the proposed method can realize correct fault location for single phase-to-phase short-circuit fault and multiple phase-to-phase short-circuit fault in active distribution network with distributed generation.

    Key words: active distribution network; fault location; waveform comparison; correlation coefficient