摘要
以动态潮流为基础提出了一种基于动态潮流的网损微增率算法。该方法引入不平衡功率分量以充分计及实际系统中发电机的功率调节特性。通过对系统雅可比矩阵转置求逆,能够准确求取所有节点的网损微增率,避免了转置雅可比矩阵法中因平衡节点无有功约束方程导致其网损微增率难以直接求取的问题。算例分析结果验证了本文方法的有效性,在有功经济调度计算中具有较好的数值稳定性和优化效果。
A novel incremental network loss algorithm based on the dynamic power flow is proposed. The unbalance component of ac-tive power is taken into the power flow model in order to take full consideration of the regulation characteristics of generators in real power grids. Then the inversion of the transposed Jacobian matrix is performed to obtain all the generators’nodal incremental network loss accurately,which can handle the unsolvable problem in the transposed jacobian matrix method because there is no active power constraints in the slack buses. Numerical results for several test systems demonstrate the effectiveness of the proposed algorithm and the advantage in economic dispatch for active power.
出处
《南方电网技术》
北大核心
2016年第2期77-81,共5页
Southern Power System Technology
关键词
动态潮流
不平衡功率
雅可比矩阵
网损微增率
经济调度
dynamic power flow
unbalanced power
Jacobian matrix
incremental network loss
economic dispatch
