电压暂降对聚丙烯装置高压机组的暂态影响  

The Influence of Voltage Sag on Transient Stateof High Voltage Unit in Polypropylene Plant

作　　者：胡海燕 Hu Haiyan(State Key Laboratory of Chemical Safety,Shandong,Qingdao,266104;SINOPEC Research Institute of Safety Engineering Co.,Ltd.,Shandong,Qingdao,266104)

机构地区：[1]化学品安全全国重点实验室,山东青岛266104 [2]中石化安全工程研究院有限公司,山东青岛266104

出　　处：《安全、健康和环境》2024年第2期17-21,共5页Safety Health & Environment

基　　金：中国石化化工事业部项目(S-05);石化企业电压暂降协同治理技术研究。

摘　　要：针对供电系统电压暂降影响石油化工装置长周期平稳运行的突出问题,以聚丙烯装置高压机组为研究对象,从高压机组电压暂降暂态影响机理入手,基于Digsilent仿真平台,搭建了装置供电系统及离心泵、压缩机、风机各类负载的仿真模型,深入分析了单一离心泵负载、不同离心泵类负载、不同高压负载的电压暂降耐受特性,获得了电压暂降深度、暂降耐受时间等关键量化指标参数及过程免疫时间要求。研究表明:电压暂降深度越深,暂降耐受时间越短,不同负载的电压暂降耐受能力不同,当电压暂降深度为50%时,聚丙烯装置关键机组抗电压暂降耐受时间集中在500~700 ms,为装置抗晃电治理提供科学依据。Aimming at the prominent problem that voltage sag of power supply system affects the long-term stable operation of petrochemical equipment,taking the high voltage unit of polypropylene unit as the research object,starting from the mechanism of voltage sag transient of the high voltage unit,and based on the Digsilent simulation platform,a simula-tion model of the power supply system of the device and various loads of centrifugal pumps,compressors and fans was built.The voltage sag tolerance charac-teristics of single centrifugal pump load,different centrifugal pump loads and different high voltage loads were deeply analyzed,and the key quantitative parameters such as voltage sag depth,sag tolerance time and process immunity time requirements were obtained.The research showed that the deeper the voltage sag depth was,the shorter the sag tolerance time was,and the voltage sag tolerance ability of dif-ferent loads was different.When the voltage sag depth was 50%,the voltage sag tolerance time of the key unit of polypropylene device was concentrated in 500~700 ms,providing a scientific basis for the anti-shock treatment of the device.

关 键 词：电压暂降 聚丙烯装置 耐受特性 过程免疫时间 晃电治理 电能质量 

分 类 号：TM614[电气工程—电力系统及自动化]