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发明公开
CN104167726A 一种基于阻抗矩阵的单相多馈入交互作用因子的计算方法 有权 转让

一种基于阻抗矩阵的单相多馈入交互作用因子的计算方法
摘要：
本发明提出了一种基于阻抗矩阵的单相多馈入交互作用因子的计算方法。包括以下步骤：1)以多馈入交直流电网受端系统为研究对象，确定待研究的直流换流站，假设待研究的直流换流站有N处；2)计算待研究的多馈入交直流电网的正负零序阻抗矩阵中换流站i的自阻抗Zii-1、Zii-2、Zii-0和换流站i与换流站j之间的互阻抗Zij-1、Zij-2、Zij-0，i＝1，2，…N，j＝1，2，…N，并计算换流站i的正负零序自阻抗的和Zij及换流站i与换流站j之间正负零序互阻抗的和Zij；3)计算换流站i与换流站j的单相多馈入交互作用因子SMIIFij。本发明能快速得到各逆变站之间的单相多馈入交互作用因子SMIIF，为评估多馈入直流系统中发生不对称故障时各个换流站之间相互作用的强弱提供参考。
摘要（英）：

The invention discloses a calculation method of a single-phase multi-feed-in interaction effect factor based on an impedance matrix, comprising steps of determining a DC converter station to be studied by taking a receiving terminal of the multi-feed-in AC power grid and presuming that the quantity of the DC converter station is N, (2) calculating self-impedance Zii-1, Zii-2, Zii-0 of a converter station i in a positive negative zero sequence impedance matrix of the multi-feed-in AC-DC power grid to be studied and the mutual impedance Zij-1, Zij-2, Zij-0,i=1,2-N, j=1,2-N between the converter station i and the converter station j,calculating the positive-negative zero sequence impedance of the converter station and the sum of the positive-negative zero sequence impedance between the converter station I and the converter station j, and (3) calculating the single-phase multi-feed-in interaction effect factor SMIIFij of the converter station I and the converter station j. The invention can quickly obtain the single-phase multi-feed-in interaction effect factor SMIT between the converter station, and can provide reference to the strongness and weakness.

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