350 MW机组保安电源系统分析及改进应用  

Analysis and Improvement Application of 350 MW Unit Security Power Supply System

作　　者：杨昭 杨恒珂 王哲[1] 员文康 夏军路 YANG Zhao;YANG Hengke;WANG Zhe;YUAN Wenkang;XIA Junlu(Xi′an Thermal Power Research Institute,Xi′an 710054,China;Jining Huayuan Thermal Power Co.,Ltd.,Jining 272000,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054 [2]济宁华源热电有限公司,山东济宁272000

出　　处：《电工技术》2022年第3期135-136,155,共3页Electric Engineering

摘　　要：火电厂保安电源系统对机组的安全可靠运行起着至关重要的作用。通过对350 MW机组交流保安电源系统的研究调试,对保安电源切换逻辑进行了详细分析。然后通过录波对MCC段母线电压、柴油发电机电压、开关动作时序的分析,对保安电源的切换时间进行优化,通过改进前后时间对比,证明切换时间优化达到了预期效果。The security power supply system plays an important role in the safe and reliable operation of unitsinthermal power plant.In this paper,through the research and debugging of 350 MW unit AC security power supply system,the switching logic of security power supply is analyzed in detail.Then,through wave record,the MCC bus voltage,diesel generator voltage and switch action time sequence are analyzed and the switching time of security power supply is optimized.Through the comparison of time before and after the improvement,it is proved that the improvement of switching time achieves the expected effect.

关 键 词：保安电源系统 柴油发电机组 自动切换 

分 类 号：TM762[电气工程—电力系统及自动化]