Multi-objective Optimization Scheduling Method of Combined Pumped Storage and VSC-HVDC Grid to Improve Transmission Capacity of Renewable Energy in Multi-region

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI:10.1109/POWERCON53785.2021.9697824

Feng Zhao, Maohai Wang, Peng Zi, Qian Dai

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Abstract

In order to improve the transmission capacity of renewable energy in multi-region, the operation optimization method of the pumped storage power station and VSC-HVDC power grid is studied. The multi-objective optimal operation model for 96 periods of the day is built to maximize both the delivering power of renewable energy and transmission section, considering the transient power angle stability and safety constraints of the joint transmission system of renewable energy-pumped storage-thermal power units-VSC-HVDC, as well as the operation characteristic of all generation units in the combined power system including the startup and shutdown restrictions. A case study system is designed based on an actual power grid in north China. The results show that the joint adjustment of pumped storage and VSC-HVDC grid operation can effectively reduce the curtailment of renewable energy, improve the level of renewable energy consumption and increase the power transmission capacity of the transmission section.

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提高可再生能源多区域输电能力的抽水蓄能-直流电网多目标优化调度方法

为了提高可再生能源在多区域的传输能力，研究了抽水蓄能电站和vdc - hvdc电网的运行优化方法。考虑可再生能源-抽水蓄能-火电机组- vsc - hvdc联合输电系统的暂态功率角稳定性和安全约束，以及联电系统中各发电机组的运行特性(包括启动和停机限制)，以可再生能源输送功率和输电段均最大化为目标，建立了96时段的多目标优化运行模型。以华北某实际电网为例，设计了一个案例分析系统。结果表明，抽水蓄能与vdc - hvdc电网运行联合调整，可有效减少可再生能源弃风，提高可再生能源消纳水平，增加输电段的输电能力。

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2021 International Conference on Power System Technology (POWERCON)

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