基于系统边际电价的输电网络固定费用分时分摊研究

提出了基于系统边际电价的输电网络固定费用的分时分摊思路。根据一年内日最大系统边际电价，将年输电费用分摊到每一日；根据一日内各时段系统边际电价，将日费用分摊到线路的不同负荷水平的各个时段，根据发热贡献或最大有功使用程度将输电线路各时段的固定费用分摊到每个节点。系统边际电价反映了系统负荷的大小，在一定程度上反映了输电设备的拥挤状况。不必求解系统最优潮流就可以得到系统边际电价，因而不存在收敛性问题，也不必进行费用修正。

Fixed cost allocation based on system marginal price

The idea of time duration allocation of transmission network fixed cost based on systemmarginal price is brought forward. According to the maximum daily system marginal price in a year,the annual transmission cost is allocated to each day. Then according to the hourly system marginal prices in a day,the daily cost is allocated to each hour with different load level,and the hourly fixed cost is allocated to each bus in terms of heat contribution or maximum active power usage. The system marginal price represents the system load situation and thus reflects the congestion status of transmission equipment in a certain extent. The system marginal price can be obtained without the optimal flow calculation,so there is no convergence problem and the cost revision is not necessary.