潮流频繁切换下计及变压器健康运行的新型电力系统配电网综合调控策略

朱孟兆; 黄莘杰; 顾朝亮; 朱文兵; 方斯顿; 杨丽君

朱孟兆,黄莘杰,顾朝亮,朱文兵,方斯顿,杨丽君.潮流频繁切换下计及变压器健康运行的新型电力系统配电网综合调控策略[J].电测与仪表,2026,63(5):38-48.
Mengzhao Zhu,Xinjie Huang,Zhaoliang Zhao,Wenbing Zhu,Fang Sidun,Lijun Yang.New Reliability Optimization Strategy of Transformer with Frequent Power Flow Switching Based on the New Power System Distribution Network[J].Electrical Measurement & Instrumentation,2026,63(5):38-48.

潮流频繁切换下计及变压器健康运行的新型电力系统配电网综合调控策略

New Reliability Optimization Strategy of Transformer with Frequent Power Flow Switching Based on the New Power System Distribution Network

DOI：

中文关键词: 配电网潮流频繁切换变压器寿命优化新型电力系统

英文关键词:distribution network frequent power flow switching transformer lifetime optimization new power systems

基金项目:国家电网有限公司总部管理科技项目资助(5500-202316535A-3-2-ZN)

作者中文名	作者英文名	单位
朱孟兆	Mengzhao Zhu	国网山东省电力公司电力科学研究院
黄莘杰	Xinjie Huang	输配电装备技术全国重点实验室重庆大学电气工程学院
顾朝亮	Zhaoliang Zhao	国网山东省电力公司电力科学研究院
朱文兵	Wenbing Zhu	国网山东省电力公司电力科学研究院
方斯顿	Fang Sidun	输配电装备技术全国重点实验室重庆大学电气工程学院
杨丽君	Lijun Yang	输配电装备技术全国重点实验室重庆大学电气工程学院

摘要点击次数: 67

中文摘要:

新型电力系统建设背景下大量高比例可再生能源接入配电网，改变了配电网内部潮流分布，带来“输-配”网间潮流频繁切换的典型场景，变压器正向和反向送电过载引起变压器寿命衰减加剧，导致可靠性低下。对此，本文提出一种潮流频繁切换下变压器寿命的配电网多类型可控资源协调优化新策略。首先，引入变压器寿命计算模型，明确变压器负载率与绝缘寿命具有强正相关性。其次，将潮流频繁切换下变压器内部特性变化纳入考虑，进而构建包含变压器负载率上限阈值约束的配电网可控资源协调管控措施并提出相应求解策略，在保证配电网电压安全和经济性的基础上针对性的改良变压器运行工况。最后，通过IEEE-33改进系统仿真分析表明，所提方法能有效降低各场景下的变压器最大负载率，为变压器寿命优化提供科学指导，提升变压器运行可靠性。

英文摘要:

With the construction of the new power system, a large proportion of renewable energy is being integrated into the distribution network, changing the internal power flow of the distribution network, resulting in frequent power switching occurring between the transmission and distribution networks. To address the issue of transformer life degradation exacerbated by forward or reverse power transmission overload, this paper proposes a coordinated control strategy for various types of controllable resources in the distribution network to optimize transformer life under frequent current switching. Firstly, a transformer life calculation model is introduced, clarifying the strong positive correlation between transformer load rate and insulation life. Secondly, the internal changes of the transformer under frequent current switching are considered, and a coordinated control measure for controllable resources in the distribution network including a constraint on the upper threshold of transformer load rate is constructed and a corresponding solution strategy is proposed. This measure effectively improves the operating conditions of the transformer while ensuring the safety and economy of the distribution network voltage. Finally, simulation analysis on the improved IEEE-33 system shows that the proposed method can effectively reduce the maximum load rate of the transformer under various scenarios, providing scientific guidance for optimizing transformer life.

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