接入220kV网架的600MW机组带厂用电进相问题分析  

Analysis on Generator Leading Phase Operation of 600 MW Unit Connected to 220 kV Grid

作　　者：黄霆[1] 杨里[1] 杨桂钟[2] 陈绍君[1] 林因[1] 

机构地区：[1]福建省电力有限公司电力科学研究院,福建福州350007 [2]福建省电力有限公司,福建福州350003

出　　处：《电力与电工》2012年第4期29-31,88,共4页Electric Power and Electrical Engineering

摘　　要：对接入220 kV网架的600 MW机组在满发工况下带厂用电无法进相的现象进行了理论分析。提出了将厂用电压约束折算为机端电压约束的思路,推导了发电机端电压与无功出力间的关系式,并据此分析了影响机组带厂用电进相深度的各种因素。得出机组无法进相是由系统电压水平、主变档位、主变电抗、厂用电负荷等多种因素共同作用所致的结论。This article theoretically analyses the phenomenon that 600 MW unit connected to 220 kV grid could not operate on leading phase at full load.A method that convert the restriction of auxiliary system voltage to restriction of generator terminal voltage is developed.The relation formula of terminal voltage with reactive power is derived.Based on this formula,it can be found that the phenomenon is the result of multiple factors such as system voltage level,main transformer tap selection,main transformer reactance,auxiliary system load.

关 键 词：发电机进相 厂用电电压约束 无功出力 

分 类 号：TM73[电气工程—电力系统及自动化]