快速分解连续潮流算法的改进及其应用

以快速分解连续潮流算法为基础，提出了基于完整雅可比矩阵和快速分解法相结合的连续潮流算法。该方法在切向量求取环节，采用完整的雅可比矩阵做系数矩阵求取切向量，从而保证切向量的准确性；在初始潮流计算和校正环节采用快速分解法进行求解。通过与牛顿连续潮流法对比发现，改进后的算法能够更快速又不失准确的追踪 曲线。此外，该方法还能方便考虑平衡发电机功率限制，能够分析发电机功率限制对系统稳定裕度、崩溃点电压水平及其分岔类型的影响。通过对IEEE 118节点系统和1416节点系统的仿真，验证了所提算法的准确性和高效性。

Enhancement of Fast Decoupled Continuation Power Flow Algorithm and its Application

Based on fast decoupled continuation power flow (FDCPF) method, an improved continuation power flow (CPF) is proposed by combining complete Jacobian matrix and FDCPF. During calculation of the tangent vector, the complete Jacobian matrix is adopted so that the tangent vector is computed accurately. During calculation of initial power flow and correction steps FDCPF is used. Compared with the Newton-based CPF method, this algorithm has more rapid speed and track P-V curve with high accuracy. Furthermore, this method can consider the slack generator’s power limit so that the effect of the slack generator’s power limit on the stability margin, voltage profiles at collapse point and bifurcation type can be analyzed. Numerical simulation has been performed on IEEE 118-bus and 1416-bus systems to validate the proposed method.