摘要
南京220 k V西环网近远期均存在潮流分布不均、存在供电瓶颈,不能满足负荷发展需求的问题。而南京西环网地处南京中心城区,无论是新建输电通道还是对现有通道实施增容改造,均存在投资巨大、实施难度大的问题。统一潮流控制器(UPFC)的投运能够均衡南京西环网各输电通道潮流,提升西环网的供电能力。与此同时,UPFC等柔性输电设备接入系统也会对电力系统稳定特性产生较大的影响。因此为改善UPFC接入系统后系统的稳定性,文中针对UPFC装置接入后的系统暂态特性及控制策略进行研究。通过对UPFC机电暂态模型的建立及系统级控制策略的制定,为UPFC装置接入南京西环网后电网的安全稳定运行,做好理论和应用方面的准备。
Some operating constraints, such as unbalanced power flow distributions and limited transfer capacities of the power imported channels, exists in the current and developing Nanjing western grids. Therefore, the power supply to the grid cannot meet load increase. However, the Nanjing western grid is located in the center of Nanjing, which makes it huge-invested and hard-implemented to build a new transmission channel or to expand the transmission capacities of the current channels. To solve this problem, UPFC（unified power flow controller） is applied to balance the power flows among the current transmission channels and to increase the power-imported capacities. Meanwhile UPFC induces large impacts to the system reliability. In order to improve operating reliability, the dynamic characteristics and control strategies for the grid have been investigated. In the end, the UPFC electromechanical dynamic model and system control strategy are proposed,which are the theoretical basis for guaranteeing system operating reliability.
出处
《江苏电机工程》
2015年第6期46-50,55,共6页
Jiangsu Electrical Engineering
关键词
UPFC
机电暂态建模
系统级控制策略
暂态响应特性
unified power flow controller（UPFC）
electromechanical transient model
system control strategy
transient response characteristics
