输配电价改革背景下电网项目多阶段投资优化决策研究

Research on multi-stage investment optimization of power grid projects under transmission and distribution price reform

针对目前电网项目投资模型难以同时考虑输配电价与建设时序的问题,提出了一种输配电价改革背景下电网项目多阶段投资优化决策方法。首先,利用输配电价改革后的电价核算方式,计算电网项目投资的成本与收益。在此基础上,将投资周期分为若干阶段,在每个投资阶段初期增加设备投入以满足逐渐增长的电网负荷需求。以全投资期收益最高为目标,以各阶段功率平衡、投产项目数量、紧后关系等为约束,建立输配电价改革下电网项目多阶段投资优化决策模型。最后,通过IEEE 24节点算例的仿真和分析验证了模型的有效性与在提高投资效率方面的优越性。

It is hard for the current power grid project investment model to simultaneously involve Transmission and Distribution Price(TDP)and construction timing.A novel multi-stage investment decision optimization method for power grid projects under the background of TDP reform is proposed.First,we use the electricity price accounting method after TDP reform to calculate the cost and income of grid project investment.Then the investment period is divided into several stages.Equipment investment is made at the beginning of each stage to meet increasing grid load demand.Taking the highest return in the entire investment period as the objective function,using power balance,maximum projects number and precursor relationship etc.at each stage as constraints,a multi-stage investment optimization decision model for power grid projects investment under TDP Reform is established.Finally,an example based on the IEEE 24-bus test system is used to verify the effectiveness of the model and demonstrate its superiority in improving investment efficiency.