黑龙江电网典型火电厂辅机低电压穿越能力分析  

Ability analysis of Heilongjiang power grid typical thermal power plant auxiliary equipments low voltage ride-through

作　　者：郭江涛[1] 胡远婷 徐冰亮 郭袅 刘进 

机构地区：[1]国网黑龙江省电力有限公司调度控制中心,哈尔滨150090 [2]黑龙江省电力科学研究院,哈尔滨150030

出　　处：《黑龙江电力》2016年第2期109-113,共5页Heilongjiang Electric Power

摘　　要：当前火电厂辅机大多采用变频技术,不具备低电压穿越能力,在故障情况下,存在系统损失大容量电源的安全隐患,严重威胁整个系统的安全稳定运行。因此,针对黑龙江电网的实际运行情况,考虑到发生低电压穿越时造成的严重影响和后果,以省内4个典型火电厂为研究对象,分析了220 k V系统和500 k V系统三相短路故障后,发电厂辅机母线电压跌落水平,并给出了火电厂辅机低电压穿越能力评价指标。Thermal power plant auxiliary equipments adopt converter technique mostly,It doesn＇t have the ability of low voltage ride- through. It will result in safe hidden trouble of losing high capability electrical source. It is baneful for safe and stable running of the whole power system. Considering the severe influence and result which be brought by low voltage ride- through. Aiming at the actual operating mode of Heilongjiang power grid,this paper takes Heilongjiang province four typical thermal power plant as studying objects. Analyzing the voltage dip level of thermal power plant auxiliary equipments after happening 220 k V and 500 k V system three- phase short- circuit fault. Putting forward the estimate index of the ability of thermal power plant auxiliary equipments low voltage ride- through.

关 键 词：黑龙江电网 火电厂 辅机 低电压穿越 电压跌落 

分 类 号：TM761[电气工程—电力系统及自动化]