基于改进目标级联法的主动配电网协调优化
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华北电力大学 电气与电子工程学院

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TM73

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国家电网有限公司科技项目


Coordinated Optimization of Active Distribution Network Based on Improved Analytical Target Cascading Method
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School of Electrical and Electronic Engineering,North China Electric Power University

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    摘要:

    随着配电网中分布式电源的渗透率不断加大,主动配电已经成为电网未来的主流方向,微电网与比其规模稍小的有源台区会逐渐增多,这些子系统能否被当作能源来调度成为提高电网运行经济性和稳定性的关键。为此,针对含有分布式电源的微电网与有源台区整体优化调度,提出一种基于改进的目标级联法的调度模型求解方法,主要以不同的利益主体产生最优的效益为最终调度目标,对于风光类不确定性因素的处理采用机会约束描述。上层为配网以及配网最优目标,下层为具有参与调度能力的微网和有源台区;在配电网与微网建模的基础上,引入改进的目标级联法,将交互功率作为共享变量进行发电机与虚拟负荷的等效从而实现上下层的解耦独立优化。实验结果对比表明,引入平衡系数的目标级联法在迭代次数、收敛性能、抗干扰性能以及整体经济性评估上能够得到更优的结果。

    Abstract:

    With the increasing penetration of distributed power sources in the distribution network, active distribution has become the mainstream direction of the power grid in the future. Microgrids and active stations that are slightly smaller than their scale will gradually increase. Whether these subsystems can be used as energy to schedule becomes the key to improving the economy and stability of power grid operation. Therefore, aiming at the overall optimal scheduling of microgrid and active station area with distributed power supply, a scheduling model solution method based on improved target cascade method is proposed, which mainly takes the optimal benefits generated by different stakeholders as the final scheduling target, and adopts the opportunity constraint description for the processing of uncertain factors of wind and solar. The upper layer is the distribution network and the optimal target of the distribution network, and the lower layer is the microgrid and active station area with the ability to participate in the scheduling. Based on the modeling of distribution network and microgrid, the improved target cascade method is introduced, and the interactive power is used as a shared variable to equivalent the generator and virtual load, so as to realize the decoupling and independent optimization of the upper and lower layers. The comparison of the experimental results shows that the target cascade method with the balance coefficient can obtain better results in the number of iterations, convergence performance, anti-interference performance and overall economic evaluation.

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杨雅淮,谷伟康,李凤然,等. 基于改进目标级联法的主动配电网协调优化 [J]. 科学技术与工程, , ():

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  • 收稿日期:2024-03-27
  • 最后修改日期:2024-04-23
  • 录用日期:2024-04-25
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