哈密—重庆±800kV特高压直流受端系统等值研究
摘要：使用PSCAD/EMTDC 软件对电力系统进行电磁暂态仿真时,需将实际电网分为内部系统、外部系统和边界系统3部分,并对外部系统进行等值简化。本文提出了一种用于电力系统相邻节点需要同时等值且存在耦合关系的潮流等值方法,有效地克服了传统方法的不足,并结合重庆电网的实际网络结构,确立了发电机组、负荷、交流通道、线路的等值方案。通过实例比较等值前后电网潮流分布、重要母线短路电流及系统暂态行为变化等情况,结果证明了所提等值方案的合理性及简化系统的工程实用性。
Abstract:When electromagnetic transient simulation of an actual power system is carried out by PSCAD /EMTDC, the actual power system has to be divided into three parts, namely the internal system, the external system and the boundary system, and the external system network is generally equivalently simplified. In order to overcome the deficiency of the traditional methods effectively, the power flow equivalent method is put forward for such systems whose adjacent nodes need to be equivalent simplified at the same time and that there exist coupling relation. By combining with the network structure features of Chongqing power grid, the equivalent simplification scheme for the generator units, loads, AC channels and transmission lines is established. In comparison with power flow distributions, short circuit currents of key buses and transient behavior variations of power grid before and after the equivalence, it is proved that the proposed equivalence scheme is reasonable and the simplified system is practicable.
标题：哈密—重庆±800kV特高压直流受端系统等值研究
英文标题：Research on the Equivalence of ±800kV UHVDC Receiving-ending System From Hami to Chongqing
作者：张彪, 王渝红, 吕跃春, 徐瑞林, 陈涛, 文一宇,
关键词：互联电网, 电磁暂态, 等值简化, 潮流等值法, 等值方案,
发表日期：2014-10-09
- 文件大小:
- 1.26 MB
- 下载次数:
- 60
-
高速下载
|
