各位大佬，光伏两级并网模型仿真时报这个错误：Singularity (a zero diagonal) encountered during the triangularization of the circuit conductance matrix. This occured at node 58 in subsystem 1. The simulation cannot be completed due to numerically ill-conditioned matrices.
这个问题怎么解决啊，跪求各位大佬的帮助！

楼主，解决了吗

解决了吗

节点电压导纳矩阵分解失败。是否有DC端口悬空没有接地？