考虑平衡端点相位不对称及光伏接入的低压配电网三相潮流模型

doi:10.11930/j.issn.1004-9649.202408058

中国电力 ›› 2024, Vol. 57 ›› Issue (10): 190-198.DOI: 10.11930/j.issn.1004-9649.202408058

• 数字化技术驱动的新型配电网 • 上一篇下一篇

考虑平衡端点相位不对称及光伏接入的低压配电网三相潮流模型

周洋¹(), 黄德志²(), 李培栋¹(), 冀凯琳¹(), 刘学峰¹(), 谭洪³()

1. 国网经济技术研究院有限公司，北京　102209
2. 国网浙江省电力有限公司义乌市供电公司，浙江义乌　322000
3. 三峡大学电气与新能源学院，湖北宜昌　443002

收稿日期:2024-08-15 出版日期:2024-10-28 发布日期:2024-10-25
作者简介:周洋（1991—），女，硕士，主要从事电网工程经济评价，E-mail：1124108352@qq.com
黄德志（1995—），男，通信作者，硕士，主要从事不对称配电网三相潮流与状态估计，E-mail：1514742719@qq.com
李培栋（1978—），男，硕士，主要从事电网工程经济评价，E-mail：lipeidong@chinasperi.sgcc.com.cn
冀凯琳（1986—），女，硕士，主要从事电网工程经济评价，E-mail：jikailin@chinasperi.sgcc.com.cn
刘学峰（1988—），男，硕士，主要从事电网工程经济评价，E-mail：332603858@qq.com
谭洪（1991—），男，博士，硕士生导师，主要从事综合能源系统优化运行与规划，E-mail：tan_hong@ctgu.edu.cn
基金资助:
国家自然科学基金资助项目（52307138）；国家电网有限公司技术服务项目（B3441324F004）。

A Three-Phase Power Flow Model for Low-Voltage Distribution Networks Considering Balanced Bus Phase Asymmetry and Photovoltaic Access

Yang ZHOU¹(), Dezhi HUANG²(), Peidong LI¹(), Kailin JI¹(), Xuefeng LIU¹(), Hong TAN³()

1. State Grid Economic and Technological Research Institute Co., Ltd., Beijing 102209, China
2. State Grid Yiwu Electric Power Company, Yiwu 322000, China
3. College of Electrical Engineering and New Energy, China Three Gorges University, Yichang 443000, China

Received:2024-08-15 Online:2024-10-28 Published:2024-10-25
Supported by:
This work is supported by National Natural Science Foundation of China (No.52307138) & Technical Services Project of SGCC (No.B3441324F004).

摘要/Abstract

摘要：

考虑到光伏逆变电源接入低压配电网的多样接入方式和复杂控制策略，建立了光伏逆变电源的三相电压与功率相对于中性点的控制模型。在此基础上，进一步提出了一个综合考量平衡端点相位不对称性以及光伏逆变电源接入因素的低压配电网三相潮流计算模型。为了验证该模型的有效性和准确性，在经过修正的IEEE 13节点测试系统上进行了仿真实验。仿真结果表明：所构建的模型能够精确、高效地计算包含光伏逆变电源在内的低压配电网三相潮流，为低压配电网的规划与运行提供了有力的理论支持和技术手段。

关键词: 三相四线制, 低压配电网, 光伏逆变电源, 智能电表

Abstract:

Considering the diverse connection modes and complex control strategies of photovoltaic (PV) inverter power sources integrated into low-voltage distribution networks, this paper delves into the establishment of a control model for the three-phase voltages and powers of PV inverter power sources relative to the neutral point. On this foundation, the paper further proposes a comprehensive low-voltage distribution network three-phase power flow calculation model that takes into account both the asymmetry of phase angles at balanced terminals and the factors involved in the integration of PV inverter power sources. To validate the effectiveness and accuracy of this model, simulation experiments were conducted on a modified IEEE-13 node test system. The simulation results clearly demonstrate that the model constructed in this paper can accurately and efficiently calculate the three-phase power flow in low-voltage distribution networks incorporating PV inverter power sources, providing robust theoretical support and technical means for the planning and operation of low-voltage distribution networks.

Key words: three phase four wire system, low voltage distribution network, photovoltaic inverter power supply, smart meter

周洋, 黄德志, 李培栋, 冀凯琳, 刘学峰, 谭洪. 考虑平衡端点相位不对称及光伏接入的低压配电网三相潮流模型[J]. 中国电力, 2024, 57(10): 190-198.

Yang ZHOU, Dezhi HUANG, Peidong LI, Kailin JI, Xuefeng LIU, Hong TAN. A Three-Phase Power Flow Model for Low-Voltage Distribution Networks Considering Balanced Bus Phase Asymmetry and Photovoltaic Access[J]. Electric Power, 2024, 57(10): 190-198.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202408058

https://www.electricpower.com.cn/CN/Y2024/V57/I10/190

图/表 6

图 1 低压配电网中光伏逆变电源的接入方式

Fig.1 Connection method of photovoltaic inverter power supply in low voltage distribution network

图 2 IEEE 13节点系统接线

Fig.2 IEEE 13 buses system wiring diagram

图 3 B相电压相角变化时的影响

Fig.3 Impact of Phase B Voltage Phase Angle Change

图 4 B相电压幅值变化时的影响

Fig.4 Impact of B-phase voltage amplitude change

图 5 B相电压幅值和相角同时变化时的影响

Fig.5 Effect of simultaneous changes in phase B voltage amplitude and phase angle

表 1 3种方案计算下的平衡端点潮流

Table 1 Balanced bus power flow under three cases

潮流结果	相别	方案1）	方案2）	方案3）	$ \delta_d^1 $	$ \delta_d^3 $
三相功率/ (MV·A)	A	1.0209+ j0.7029	1.0799+ j0.5748	1.0799+ j0.5748	–5.56%	0
	B	0.9464+ j0.6018	1.0134+ j0.7116	1.0134+ j0.7116	–6.61%	0
	C	1.2963+ j1.0521	1.1680+ j1.0629	1.1680+ j1.0629	10.96%	0
三相相角/(°)	A	0	0	0	—	—
	B	–120	–120	–120	—	—
	C	–240	–192	–192	—	—
收敛次数/次	—	5	6	8	—	—
计算时间/s	—	0.0405	0.0473	0.0715	—	—

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考虑平衡端点相位不对称及光伏接入的低压配电网三相潮流模型

A Three-Phase Power Flow Model for Low-Voltage Distribution Networks Considering Balanced Bus Phase Asymmetry and Photovoltaic Access

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考虑平衡端点相位不对称及光伏接入的低压配电网三相潮流模型

A Three-Phase Power Flow Model for Low-Voltage Distribution Networks Considering Balanced Bus Phase Asymmetry and Photovoltaic Access

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参考文献 33

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