摘要
文中建立了风电场经两种拓扑结构的VSC-MTDC并入电网的模型,两种模型为串联模型和并联模型,并基于两种拓扑结构的比较结果对多端柔性直流输电控制器进行了优化。仿真模型主要包括:风电场等效聚合模型,风电场换流站控制器,直流电缆的Bergeron模型。优化方法采用单纯形算法。将两种拓扑结构的模型进行了仿真分析,仿真结果显示,在考虑到受交流系统扰动以及风电场侧切机情况下的稳定性,并联系统更加适合海上风电场经柔性直流输电并网。采用单纯形优化后的VSC-MTDC动态响应能力相对于优化改进前有了很大的提高。
This paper builds two different models of offshore wind energy integration via VSC-MTDC, and compares the different dynamic reaction of the two different ways, and then optimizes the control parameters of the controller of VSC-MTDC adopting simplex method. The model used in emulation include： The VSC control model using a decoupled control strategy; The wind farm aggregate model and Bergeron model used in cable model. The simulation results show that it is better to use parallel connection when considering the fault in AC system and the shut-down of converter in offshore. The optimization can enhance the dynamic characters and improve the capability of keeping stability after disturbance.
出处
《高压电器》
CAS
CSCD
北大核心
2015年第10期24-33,共10页
High Voltage Apparatus
基金
国家自然科学基金项目(51505225)
江苏省六大人才高峰项目(ZBZZ-045)
江苏省自然科学基金面上项目(BK20131350)
中央高校基本科研业务费专项资金资助(30915011324)
留学回国人员择优资助项目~~
关键词
多端直流输电
风电场
直流电缆
并联
串联
单纯形法
优化
VSC-MTDC
wind farm
DC cable
parallel connection
series connection
simplex method
optimization
