基于直流灵敏度法的可用传输容量输电费用评估

Tariff assessment of available transfer capability based on DC-sensitivity in electricity markets

在竞争性的电力市场环境下,输电网的可用传输容量(Available Transfer Capability,ATC)输电费用是一个亟待解决的问题。提出了ATC传输费用的概念,阐述了直流潮流灵敏度法的ATC的传输费用算法,该方法利用直流潮流灵敏度的变化来分析电力市场环境下可用传输容量的问题,并利用潮流跟踪法将可用传输容量输电费用公平分摊到各个交易的参与者,最后使用所提算法以及常规最优潮流法对WSCC-9节点输电系统某时段的电力交易进行了仿真计算。结果表明,此方法计算速度快、迭代次数少,能有效地跟踪电力市场的变化,能够满足电力市场实时交易的要求,具有一定的经济实用价值。

Under the condition of electricity market with competition, the problem of calculating the transmission tariff of available transfer capability is not solved. A definition and research significance of the ATC tariff was proposed, and a practical and fast method based on the DC-sensitivity power flow to calculate transmission tariff of available transfer capability was described. This method analyzed ATC by using the change of the DC-sensitivity power flow, and transmitted the ATC transmission tariff using the method of the power flow track fairly to share each transaction participant. Finally, the method and the OPF method were applied to WSCC 9 bus test systems. The example result shows that the method is faster than the OPF, the iteration times are fewer, the method can trace the change of electricity market effectively, and the method can satisfy the real-time requirements, which has a certain practical value in economy.