山东电力技术2026，Vol.53Issue(5)：15-27,13.DOI:10.20097/j.cnki.issn1007-9904.250224
桥吊接入状态对港区配电网首端节点谐波畸变率的影响分析
Analysis of the Impact of Quay Crane Access Status on Harmonic Distortion Rate at the Primary Node of the Port Distribution Network
摘要
Abstract
With the deepening implementation of the green and low-carbon development strategy,electrification transformation has been widely promoted in major ports across China.However,after that large-scale logistics handling equipment,such as quay cranes and yard cranes,are connected to the port distribution network,their short-term high-power characteristics can cause severe fluctuations in load power,and then significantly increases the current total harmonic distortion at the primary node of the distribution network.With the rise in total harmonic distortion,transformers will endure greater harmonic-induced additional losses,which,under long-term operation,accelerate aging and ultimately shorten their service lifespan.Based on the mapping relationship between harmonic distortion rate and transformer lifespan,this paper proposes a multioperating-condition-coupled dynamic evaluation model for the harmonic impact of quay cranes,quantifying the contribution of access location,equipment quantity,and operating state to the harmonic distortion rate at the primary node of the distribution network.First,based on the actual operating motion patterns of quay crane devices,a simulation model of quay cranes and yard cranes is constructed in Simulink using the asynchronous motor module to analyze the harmonic characteristics of port logistics handling equipment in practical engineering.Second,the impact of different operating conditions of the quay cranes on the harmonic current distortion rate at the primary common node of the distribution network and the lifespan of port transformers is quantified.Finally,simulation results based on the IEEE-14 bus distribution network system demonstrate that the proposed method accurately quantifies harmonic distortion rate under various operating conditions,providing theoretical support for maintenance personnel in formulating transformer harmonic suppression strategies and extending equipment lifespan.关键词
港区配电网/异步电动机模块/谐波建模/公共节点/电流谐波畸变率Key words
port distribution network/asynchronous motor module/harmonic modeling/common node/current harmonic distortion rate分类
信息技术与安全科学引用本文复制引用
王曙宁,王峰,王滨,戴中坚,牛涛..桥吊接入状态对港区配电网首端节点谐波畸变率的影响分析[J].山东电力技术,2026,53(5):15-27,13.基金项目
国网江苏省电力有限公司科技项目"潮流频繁切换下内河港区变压器运行性能提升关键技术与应用"(J2024111).Science and Technology Project of State Grid Jiangsu Electric Power Company"Key Technologies and Applications for Improving Transformer Operational Performance in Inland Port Areas Under Frequent Power Flow Switching"(J2024111). （J2024111）
