基于混合电力电子变压器的配电网潮流优化调控方法

doi:10.11930/j.issn.1004-9649.202505070

摘要/Abstract

摘要：

针对大规模分布式电源（distributed generation，DG）接入配电网带来的电能质量问题，提出一种基于混合电力电子变压器（hybrid power electronics transformer，HPET）的配电网潮流优化调控方法，旨在提升配电网对DG的容纳能力。构建电压源模型和功率注入模型描述HPET的稳态特性，并考虑HPET的非线性电压调节能力和电力电子器件的约束条件，提出了HPET序列线性规划（sequential linear programming，SLP）方法。通过算例仿真验证，所提方法通过协调多台HPET的运行，为高渗透率DG接入的配电网提供了一种低成本、高效的电压/无功控制解决方案，提升了配电网DG的利用率。

关键词: 混合电力电子变压器, 配电网, 分布式电源

Abstract:

Aiming at the power quality problems brought by the access of large-scale distributed power (DG) to the distribution network, this paper proposes distribution network power flow optimization control method based on hybrid power electronic transformer (HPET), which aims to improve the accommodation capacity of the distribution network for DG. The steady-state of HPET are described by establishing a voltage source model and a power injection model, and the HPET sequential linear programming (SLP) method is proposed by considering the nonlinear voltage capability and the constraints of power electronic devices. Through example simulation verification, the proposed method provides a low-cost and efficient voltage/reactive power control solution for the distribution network high-penetration DG access by coordinating the operation of multiple HPET, which improves the utilization of DG in the distribution network.

Key words: hybrid power electronics transformer, distribution network, distributed generation

李岳华, 王帅, 马卓然, 杨智明, 廖小兵. 基于混合电力电子变压器的配电网潮流优化调控方法[J]. 中国电力, 2025, 58(10): 171-179.

LI Yuehua, WANG Shuai, MA Zhuoran, YANG Zhiming, LIAO Xiaobing. Power Flow Optimization and Control Method for Distribution Networks Based on Hybrid Power Electronics Transformers[J]. Electric Power, 2025, 58(10): 171-179.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202505070

https://www.electricpower.com.cn/CN/Y2025/V58/I10/171

图/表 9

图 1 三绕组变压器HPET模型

Fig.1 HPET model of three winding transformer

图 2 HPET电压源模型

Fig.2 HPET voltage source model

图 3 HPET功率注入模型

Fig.3 HPET power injection model

图 4 HPET SLP方法流程

Fig.4 HPET SLP method process

图 5 改进的69节点系统拓扑

Fig.5 Improved 69 node system topology

表 1 HPET的参数

Table 1 Parameters of HPET

HPET	R^F/Ω	X^F/Ω	R^H/Ω	X^H/Ω	S^F/(MV·A)	S^M/(MV·A)
1	0.82	0.27	0	0.086	3.0	0.30
2	0.06	0.16	0	0.017	5.0	0.50
3	2.03	1.03	0	0.228	3.5	0.35

图 6 初始69节点系统相电压幅值

Fig.6 Initial 69 node system phase voltage amplitude

表 2 69节点系统含HPET的SLP结果

Table 2 SLP results of the 69-bus system with HPET

w₁	w₂	$\displaystyle\sum_{i\in \mathcal{N}^{\rm DG} }\displaystyle\sum_{\phi\in \varOmega} P_{i,\phi}^{\rm DG} $/MW	迭代次数	状态	时间/s
0	0	34.50	14	最优	80.10
0	0.01	33.15	49	步长限制终止	257.27
0	0.001	34.20	19	步长限制终止	117.53
0.010	0	27.03	19	步长限制终止	85.99
0.010	0.010	27.03	19	步长限制终止	89.01
0.010	0.001	27.03	19	步长限制终止	111.26
0.001	0	34.30	17	步长限制终止	108.91
0.001	0.010	34.13	16	步长限制终止	103.44
0.001	0.001	34.13	16	步长限制终止	102.61

图 7 69节点系统在HPET补偿情况下的电压幅值

Fig.7 The voltage magnitude of the 69-Bus system under HPET compensation.

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