本文選題：故障行波重現(xiàn)　切入點(diǎn)：反演理論　出處：《電網(wǎng)技術(shù)》2017年08期 　論文類型：期刊論文

【摘要】：準(zhǔn)確獲取輸電線路故障點(diǎn)的關(guān)鍵暫態(tài)信息,對線路故障原因辨識(shí)及線路改造方案的制定都有重要意義。在分析不同類型短路故障行波的基礎(chǔ)上,對輸電線路不對稱短路故障關(guān)鍵暫態(tài)信息的獲取方法進(jìn)行了研究。首先利用反演理論,推算出所需的故障點(diǎn)暫態(tài)電流波形。結(jié)合短路故障類型,構(gòu)建了基于故障點(diǎn)模量電流幅值、故障角及故障電阻的數(shù)學(xué)模型并采用改進(jìn)螢火蟲算法(improved firefly algorithm,IFFA)進(jìn)行求解。仿真結(jié)果表明,該方法可準(zhǔn)確重現(xiàn)故障點(diǎn)的故障行波,實(shí)現(xiàn)關(guān)鍵暫態(tài)故障數(shù)據(jù)的挖掘,有望為輸電線路不對稱接地故障的故障原因辨識(shí)及線路改造提供幫助。
[Abstract]:Accurate acquisition of critical transient information of transmission line fault points is of great significance for line fault cause identification and line reconstruction scheme formulation. Based on the analysis of traveling waves of different types of short-circuit faults, In this paper, the method of obtaining critical transient information of asymmetric short-circuit fault of transmission line is studied. Firstly, by using inversion theory, the needed transient current waveforms of fault point are calculated, and combined with the type of short-circuit fault, A mathematical model based on the amplitude of modulus of fault point, fault angle and fault resistance is constructed and solved by improved firefly firefly algorithm. The simulation results show that the proposed method can accurately reproduce the fault traveling wave at fault point. It is expected that the mining of critical transient fault data will be helpful for the identification of the fault causes of the asymmetrical grounding faults of transmission lines and the improvement of the transmission lines.
【作者單位】： 上海交通大學(xué)電氣工程系;國網(wǎng)山東省電力公司濟(jì)寧供電公司;
【基金】：國家自然科學(xué)基金項(xiàng)目(51307109)~~
【分類號(hào)】：TM75

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 李小鵬;湯涌;滕予非;甄威;李e，

本文編號(hào)：1647535