考虑多能源配套的送端电网直流集群暂态过电压优化策略研究

牛拴保; 崔伟; 张文朝; 汪莹; 黄明辉; 王聪

doi:10.19912/j.0254-0096.tynxb.2023-1992

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (4) : 103-113. DOI: 10.19912/j.0254-0096.tynxb.2023-1992

考虑多能源配套的送端电网直流集群暂态过电压优化策略研究

牛拴保¹, 崔伟², 张文朝³, 汪莹², 黄明辉³, 王聪²

作者信息 +

STUDY ON TRANSIENT OVERVOLTAGE OPTIMIZATION STRATEGY OF DC CLUSTER IN SENDING-END GRID CONSIDERING MULTI-ENERGY MATCHING

Niu Shuanbao¹, Cui Wei², Zhang Wenchao³, Wang Ying², Huang Minghui³, Wang Cong²

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文章历史 +

摘要

针对含大规模风电、光伏发电资源汇集成直流集群接入的送端电网中,系统发生直流故障时直流集群易受到暂态过电压影响的问题,提出一种考虑多能源配套的送端电网直流集群暂态过电压优化策略。首先,基于送端电网简化等效系统,分析大规模直流集群接入下送端电网暂态过电压变化特性,建立直流集群暂态过电压模型。其次,考虑多能源配套设备接入直流集群近端,对直流集群暂态过电压模型进行部分修正。然后,以直流集群近端暂态过电压、直流集群近端多能源配套设备调节成本为优化目标,建立送端电网暂态过电压优化模型,并结合神经网络算法和遗传算法,提出送端电网暂态过电压优化求解算法。最后,以西北某地区直流外送通道运行数据为基础,搭建仿真模型对直流故障下的系统暂态过电压进行分析,结果表明该文所建模型在直流集群输出母线暂态过电压的平抑方面具有明显效果。

Abstract

Aiming at the problem that the DC cluster is easily affected by transient overvoltage when DC fault occurs in the DC cluster access system with large-scale wind power and photovoltaic power generation resources, a transient overvoltage optimization strategy of DC cluster in sending-end grid considering multi-energy matching is studied in this paper. Firstly, based on the simplified equivalent system of the sending-end grid, the transient overvoltage variation characteristics of the sending-end grid under large-scale DC cluster access are analyzed, and the transient overvoltage model of the DC cluster is established. Secondly, the transient overvoltage model of DC cluster is partially modified considering that multi-energy equipment is connected to the near end of DC cluster. Then, taking the transient overvoltage at the proximal end of the DC cluster and the adjustment cost of multi-energy supporting equipment at the proximal end of the DC cluster as the optimization objectives, the transient overvoltage optimization model of the sending-end grid is established. Combined with neural network algorithm and genetic algorithm, the optimal solution algorithm for the transient overvoltage of the sending-end grid is proposed. Finally, based on the operation data of DC transmission channel in a certain region in northwest China, a simulation model is built to analyze the system transient overvoltage under DC fault. The results show that the model established in this paper has a significant effect on the suppression of transient overvoltage of DC cluster output bus.

导出引用

牛拴保, 崔伟, 张文朝, 汪莹, 黄明辉, 王聪. 考虑多能源配套的送端电网直流集群暂态过电压优化策略研究[J]. 太阳能学报. 2025, 46(4): 103-113 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1992

Niu Shuanbao, Cui Wei, Zhang Wenchao, Wang Ying, Huang Minghui, Wang Cong. STUDY ON TRANSIENT OVERVOLTAGE OPTIMIZATION STRATEGY OF DC CLUSTER IN SENDING-END GRID CONSIDERING MULTI-ENERGY MATCHING[J]. Acta Energiae Solaris Sinica. 2025, 46(4): 103-113 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1992

中图分类号： TM73

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