考虑直流分量的短路电流衰减实用计算方法研究
发布时间:2019-08-09 21:19
【摘要】:目前,短路电流实用计算中缺乏同时考虑短路电流周期分量和非周期分量衰减的方法,特别是针对非周期分量衰减计算的相关研究更少。提出不用传统计算曲线、考虑多机复杂电网实际接线和实际机组参数的短路电流周期分量衰减实用计算方法。此外,提出考虑实际电网结构用转移阻抗求取非周期分量的衰减。基于所提方法完成短路电流计算模块的开发,可直接对BPA数据格式的电网进行短路计算,计算结果经与用EMTP对同一案例计算结果的比较分析,验证了该模块的准确性。
[Abstract]:At present, there is a lack of methods to consider both periodic and aperiodic component attenuation of short-circuit current in practical calculation of short-circuit current, especially for the calculation of aperiodic component attenuation. A practical method for calculating the periodic component attenuation of short circuit current without traditional calculation curve and considering the actual wiring of multi-machine complex power grid and the actual unit parameters is put forward. In addition, considering the actual power grid structure, the attenuation of aperiodic components is calculated by transfer impedance. Based on the proposed method, the short circuit current calculation module can be developed, and the short circuit calculation of BPA data format can be carried out directly. The calculation results are compared with those of the same case with EMTP, and the accuracy of the module is verified.
【作者单位】: 上海电力学院电气工程学院;国网随州供电公司;
【分类号】:TM713
[Abstract]:At present, there is a lack of methods to consider both periodic and aperiodic component attenuation of short-circuit current in practical calculation of short-circuit current, especially for the calculation of aperiodic component attenuation. A practical method for calculating the periodic component attenuation of short circuit current without traditional calculation curve and considering the actual wiring of multi-machine complex power grid and the actual unit parameters is put forward. In addition, considering the actual power grid structure, the attenuation of aperiodic components is calculated by transfer impedance. Based on the proposed method, the short circuit current calculation module can be developed, and the short circuit calculation of BPA data format can be carried out directly. The calculation results are compared with those of the same case with EMTP, and the accuracy of the module is verified.
【作者单位】: 上海电力学院电气工程学院;国网随州供电公司;
【分类号】:TM713
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