冷轧关键电气节能改造技术及工程实践

Key Electrical Energy-Saving Retrofitting Technologies and Engineering Practice for Cold Rolling Process

摘要: 冷轧关键设备电气系统能耗高、负荷波动大，在节能减排和成本控制要求下亟需系统化改造。文章从变频调速、无功补偿与谐波治理、再生能量回收、智能控制等常用手段切入，提出以液压伺服系统为重点的电气节能优化思路，梳理液压伺服系统的能耗特征、节能机理与实施路线，并结合精整机组改造实践进行阐释。通过建立伺服液压系统数学模型并设计PID控制策略，深化了节能改造的理论基础。研究认为，采用电气与液压协同优化策略，可在保证产品质量与设备稳定性的前提下降低能耗、提升运行效率和可维护性，为冷轧生产线节能改造提供可推广的技术路径。

Abstract: The electrical systems of key cold rolling equipment exhibit high energy consumption and significant load fluctuations, necessitating systematic upgrades to meet energy conservation, emission reduction, and cost control requirements. This study explores conventional solutions including variable frequency drive speed regulation, reactive power compensation with harmonic mitigation, energy recovery systems, and intelligent control technologies. By establishing a mathematical model of the servo-hydraulic system and designing a PID control strategy, the theoretical foundation of energy-saving retrofits is enhanced. It proposes an electrical energy optimization strategy centered on hydraulic servo systems, detailing their energy consumption characteristics, energy-saving mechanisms, and implementation pathways, supported by practical refinishing line retrofitting case studies. Research findings demonstrate that integrated electrical-hydraulic optimization strategies can effectively reduce energy consumption while maintaining product quality and equipment stability, enhancing operational efficiency and maintainability. This approach provides a scalable technical pathway for energy-efficient retrofits in cold rolling production lines.