基于PSCAD/EMTDC的大规模新能源并网电磁暂态并行仿真

随着大规模新能源并网，大量电力电子元器件的接入使传统电网电磁暂态特性发生了很大改变，无论从算法还是计算规模上都对电网仿真提出了新要求。在PSCAD（电力系统计算机辅助设计）上搭建了含新能源接入的内蒙古电网电磁暂态模型，实现全网的电磁暂态精确仿真；基于集群并行仿真技术，解决了因计算规模过大导致无法计算或仿真效率低的问题；进一步提出了基于节点矩阵规模的网络均衡整合方法，减少了计算资源的占用率。仿真结果表明，集群并行技术可有效提升新能源并网电磁暂态模型的仿真效率；同时，在保证仿真速度的前提下创新研究的网络均衡整合方法，可实现计算资源的利用效率优化。

Electromagnetic Transient Parallel Simulation of Large-Scale New Energy Grid Connection Based on PSCAD/EMTDC

As the large-scale new energy is connected into the grid, the electromagnetic transient characteristics of traditional power grid have been greatly changed owing to the access of the massive power electronic components. Therefore, new requirements of the power grid simulation have been put forward from both the algorithm and the calculation scale. The electromagnetic transient model of Inner Mongolia power grid with new energy access is built based on PSCAD software to realize the accurate simulation of the electromagnetic transient of the whole network. Based on cluster parallel simulation technology, the problem that the computing scale is too large to be computed or the simulation efficiency is low is solved. Furthermore, a network equalization integration method based on the size of the node matrix is proposed, which reduces the occupancy rate of computing resources. The simulation results show that the cluster parallel technology can effectively improve the simulation efficiency of the new energy grid-connected electromagnetic transient model. At the same time, under the premise of ensuring the simulation speed, the proposed network equalization integration method can optimize the utilization efficiency of computing resources.