云广特高压直流输电系统中换流变压器铁心饱和不稳定的抑制  

Suppression of Core Saturation Instability in Converter Transformer for UHVDC Power Transmission System From Yunnan to Guangdong

作　　者：杨小兵[1] 李兴源[1] 金小明[2] 郝巍[3] 

机构地区：[1]四川大学电气信息学院,四川省成都市610065 [2]中国南方电网技术研究中心,广东省广州市510620 [3]云南省电力设计院,云南省昆明市650011

出　　处：《电网技术》2009年第19期32-36,共5页Power System Technology

基　　金：国家重点基础研究专项经费项目(2004CB217907);"十一五"国家科技支撑计划重点项目(2008BAA13B01)~~

摘　　要：换流变压器铁心饱和不稳定对电力系统的危害十分严重,文章研究了变压器铁心饱和不稳定的产生机理,设计了用于控制铁心饱和不稳定的附加控制电路。基于南方电网2010年数据,采用PSCAD/EMTDC为云广±800kV特高压直流输电系统建立了详细的电磁暂态仿真模型,通过仿真试验验证了该附加控制电路的有效性。The core saturation instability of converter transformer will endanger important components as well as the secure operation of power grid. The mechanism causing core saturation instability of transformer is researched, and the additional control circuit to suppress core saturation instability is designed. Based on the operational data of South China power gird in the year 2010 and by use of PSCAD/EMTDC,a detailed electromagnetic transient simulation model for ±800 kV DC power transmission system is built by which the effectiveness of the proposed additional control circuit is validated.

关 键 词：特高压直流 铁心饱和不稳定 附加控制电路 

分 类 号：TM712[电气工程—电力系统及自动化]