基于混合多终端软开关的低压配电网柔性互联研究  

Research onFlexible Interconnection of Low-voltage Distribution Network Based on Hybrid Multi-terminal Soft Open Point

作　　者：杨文锋 舒舟 吴万军 YANG Wenfeng;SHU Zhou;WU Wanjun(Shenzhen Power Supply Bureau Co.,Ltd.,Shenzhen,Guangzhou 518000,China;Diqing Power Supply Bureau,Diqing,Yunnan 674400,China)

机构地区：[1]深圳供电局有限公司,深圳518000 [2]云南迪庆供电局,迪庆674400

出　　处：《自动化与仪器仪表》2025年第2期63-66,72,共5页Automation & Instrumentation

摘　　要：随着可再生能源和低碳技术的快速发展,配电系统面临着越来越大的挑战,传统的配电网设计无法有效应对这些变化和增长。为了满足配电系统对网络容量和灵活性的需求,并适应低碳技术的接入,提出了混合多终端软开关(MT-SOP)来有效地提供低压配电网的互连能力。每个混合MT-SOP的分支都有一个交流/直流转换器,与一组交馈线选择开关串联,使转换器能够与节点上的任何馈线连接。在三端情况下,非对称转换器的尺寸可以增加高达50%的可行功率传输。为了进一步提高系统效率,还通过形成圆锥混合整数规划,优化设备配置和功率传输方式。通过案例实验可知,与同等尺寸的MT-SOP相比,混合MT-SOP大大提高了转换器的利用率,并降低了配电系统的损耗,这为未来低压配电网的发展提供了可行的解决方案。With the rapid development of renewable energy and low-carbon technologies,distribution systems are facing increas-ing challenges,and traditional distribution network designs cannot effectively cope with these changes and growth.In order to meet the needs of distribution systems for network capacity and flexibility,and to accommodate the access of low-carbon technologies,a hybrid multi-terminal soft open point(MT-SOP)is proposed to effectively provide the interconnection capacity of low-voltage distri-bution networks.Each branch of the hybrid MT-SOP has an AC/DC converter in series with a set of cross-feeder selector switches,enabling the converter to connect to any feeder on the node.In the three-terminal case,the size of the asymmetric converter can in-crease the viable power transfer by up to 50%.In order to further improve the efficiency of the system,this paper also optimizes the equipment configuration and power transmission mode by forming conical mixed integer programming.According to the case experi-ment,compared with MT-SOP of the same size,the hybrid MT-SOP greatly improves the utilization rate of the converter and re-duces the loss of the distribution system,which provides a feasible solution for the future development of low-voltage distribution network.

关 键 词：低压配电网 柔性互联 软开关 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]