本文選題：差動(dòng)保護(hù) + 雙端測距�。� 參考：《華東電力》2014年12期

【摘要】：基于輸電線路的分布式參數(shù)模型,采用兩端的電氣量進(jìn)行測距計(jì)算,提出了雙端測距優(yōu)化算法和改進(jìn)措施。該算法詳細(xì)分析了故障時(shí)線路各點(diǎn)電壓與電流的關(guān)系,利用接地電阻阻性特征確定故障位置,不受線路負(fù)荷、系統(tǒng)阻抗和過渡電阻的影響,且具有較高精度。同時(shí)針對(duì)分段參數(shù)導(dǎo)線和測量回路精度帶來的誤差,提出了改進(jìn)措施,完善了測距方案。
[Abstract]:Based on the distributed parameter model of the transmission line, the location calculation is carried out by using the electrical quantities at both ends, and the optimization algorithm and the improvement measures are put forward. The relationship between voltage and current is analyzed in detail, and the fault location is determined by the resistance characteristic of grounding resistance, which is independent of line load, system impedance and transition resistance, and has high accuracy. At the same time, aiming at the error caused by the precision of segmented parameter conductor and measuring loop, the improvement measures are put forward and the ranging scheme is improved.
【作者單位】： 國網(wǎng)泰州供電公司;長園深瑞繼保自動(dòng)化有限公司;
【分類號(hào)】：TM751

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本文編號(hào)：1992555