大容量发电机组并网对电力系统稳定性影响研究  

Research of large-power units influence on transient stability of power system

作　　者：姚钰 贺文[2] 

机构地区：[1]宁夏电力设计院,银川市750001 [2]宁夏电力调度中心,银川市750001

出　　处：《宁夏电力》2007年第A01期37-40,50,共5页Ningxia Electric Power

摘　　要：大容量发电机组在电力系统中的投运,提高了系统的充裕度水平、系统供电可靠性水平及资源的利用效率,但对于系统的正常运行也产生了重大冲击。本文分析了大容量机组并网时,对于系统暂态稳定的影响,同时分析了关键潮流断面的功率传送能力对于机组窝出力水平的影响,并给出了相应的解决方案,显著提高了断面的稳定水平,降低了机组的窝出力情况,最后用一个实际算例说明了大机组并网时系统运行及机组窝出力情况。Operation of large-power units in power system, improves its adequacy level, reliability and the energy utilization efficiency. On the other hand, there are also serious impacts on system operation. The influence on transient stability of power system is discussed when large-power units are put into operation. Besides, influence on units＇ derated output, owed to transfer ability of critical power-flow section, is also analyzed and some advice is presented to improve the transfer ability of critical section. At last, an actual example is given to illustrate system operation and the units＇ derated output when large-power units are put into operation.

关 键 词：大容量机组 潮流断面 暂态稳定 

分 类 号：TM712[电气工程—电力系统及自动化]