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1.国网天津市电力公司电力科学研究院,天津市 300384
2.智能电网教育部重点实验室(天津大学),天津市 300072
3.国网天津市电力公司城东供电分公司,天津市 300250
祖国强(1989—),男,通信作者,博士,高级工程师,主要研究方向:配电系统规划运行。E-mail:zuguoqiang_tju@163.com
郝子源(1993—),男,硕士,助理工程师,主要研究方向:配电网运行与需求侧响应。E-mail:haoziyuan1993@163.com
黄旭(1984—),男,博士,高级工程师,主要研究方向:配电系统运行与控制。E-mail:huangxu335@163.com
收稿:2021-11-16,
修回:2022-02-14,
网络出版:2022-09-01,
纸质出版:2023-04-10
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祖国强,郝子源,黄旭等.考虑低压台区柔性互联的配电网最大供电能力[J].电力系统自动化,2023,47(7):84-93.
ZU Guoqiang,HAO Ziyuan,HUANG Xu,et al.Total Supply Capability of Distribution Network Considering Flexible Interconnection of Low-voltage Distribution Station Areas[J].Automation of Electric Power Systems,2023,47(7):84-93.
祖国强,郝子源,黄旭等.考虑低压台区柔性互联的配电网最大供电能力[J].电力系统自动化,2023,47(7):84-93. DOI: 10.7500/AEPS20211116005.
ZU Guoqiang,HAO Ziyuan,HUANG Xu,et al.Total Supply Capability of Distribution Network Considering Flexible Interconnection of Low-voltage Distribution Station Areas[J].Automation of Electric Power Systems,2023,47(7):84-93. DOI: 10.7500/AEPS20211116005.
“双碳”目标下,配电网将承载分布式发电、电动汽车、电采暖等低碳技术的大规模应用,面临着承载能力不足、负载不均衡以及电能质量等问题的严峻挑战,而低压台区柔性互联技术被认为是应对上述挑战的有效手段。因此,研究了考虑低压台区柔性互联的配电网最大供电能力(TSC)。首先,给出了考虑台区柔性互联的配电网典型结构以及运行方式,建立了考虑柔性互联设备多端口潮流灵活分配、负荷多级转供的配电网TSC模型;其次,针对所提TSC模型的非线性非凸特征,提出了基于分支定界算法的模型求解方法;然后,计算了实际台区柔性互联配电网算例的TSC,并进行
N
-1安全性校验;最后,观测了不同低压柔性互联设备容量下TSC数值的变化规律,给出了台区柔性互联配电网的规划运行建议,为低压台区柔性互联技术在配电网的大规模应用提供了理论基础。
Under the target of “carbon emission peak and carbon neutrality”
the distribution network will carry the large-scale application of low-carbon technologies such as distributed generation
electric vehicles and electric heating
which is faced with severe challenges such as insufficient carrying capacity
load imbalance and power quality. And the flexible interconnection technology of the low-voltage distribution area is considered as an effective way to deal with the above challenges. Therefore
the total supply capability (TSC) of the distribution network considering the flexible interconnection of low-voltage distribution station areas is proposed. Firstly
the typical structure and operation mode of the distribution network considering the flexible interconnection of the station areas are given
and the TSC model of the distribution network considering the flexible distribution of multi-port power flow of flexible interconnected devices and multi-level load transfer is established. Secondly
aiming at the nonlinear non-convex characteristics of the proposed TSC model
a model solution method based on branch and bound algorithm is proposed. Then
the TSC of the actual flexible interconnected distribution network is calculated
and the
N
-1 security verification is carried out. Finally
the variation law of TSC values with different capacities of low-voltage flexible interconnected devices is observed
and the planning and operation suggestions of the flexible interconnected distribution network in the station area are given
which provide a theoretical basis for the large-scale application of the flexible interconnected technology of the low-voltage station area in the distribution network.
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