摘要
对500kV变压器调压挡位的合理设置,将直接影响相关上下层电网的无功电压分布和电压水平。首先建立了变压器调挡的数学模型,分析变压器调压挡位变动时对电网无功电压的影响机理,进而提出了电压合格覆盖率指标、变压器挡位设置原则和调压挡位确定方法,最后通过对广东梅州电网的仿真计算,验证该方法进行调压挡位设置可满足各种运行方式,效果明显。
The proper tap changer setup of 500 kV transformer can directly affect the upper and lower grid var voltage distribution and voltage value.Firstly mathematics model of transformer tap changer is built up.The influence mechanism of tap changing on var voltage in network is analyzed,index of qualified voltage coverage is submitted together with tap changer setup protocol and decision-making method of tap level.Finally the simulation on Guangdong Meizhou network proves this method can setup the tap changer to comply with all kinds of operation mode,and has made prominent performance.
出处
《供用电》
2011年第5期57-60,84,共5页
Distribution & Utilization
关键词
变压器调压挡
无功电压
电压合格覆盖率
tap changer of transformer
inactive voltage
qualified voltage coverage
