摘要
天广直流控制保护系统改造后,为验证天广直流能否平稳地由联网方式过渡至孤岛方式运行、孤岛运行时能否稳定地改变传输功率、能否承受较小的扰动以及能否平稳地由孤岛方式过渡至联网方式运行,需要进行孤岛试验。天广直流进入孤岛运行后,由整流站内工作人员调整天广直流输送功率,再改变孤岛内发电机组出力,最后由孤岛转入联网。从趋势曲线图中可以看出送端交流侧电压、频率与输送功率未发生较大的波动,这表明天广直流孤岛运行性能良好。
After the control and protection system of Tian-Guang HVDC are reformed, in order to verify whether the Tian-Guang HVDC can smoothly turn into island operation from network operation, stably change transmission power in island operation, sustain small disturbance and smoothly turn back into network operation, the test of Tian--guang HVDC transmission system in island operation should be implemented. After Tian-Guang HVDC turn into island operation, rectifier station staff adjust Tian-Guang HVDC transmission power, then adjust output power of generators in the island, finally Tian-Guang HVDC turn back into network operation. As can be seen from the trend curves, voltage, frequency and transmission power in the sending terminal are kept within the normal fluctuation, which indicates that the performance of Tian-guang HVDC transmission system in island operation is good.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2011年第6期101-104,共4页
Proceedings of the CSU-EPSA
关键词
高压直流输电
孤岛运行
波动
频率限制
调速器
稳定
high voltage direct current（HVDC）
island operation
fluctuation
frequency limit
speed regulator
stability
