南澳多端柔性直流输电示范工程系统调试

The System Commissioning of Nan'ao VSC-MTDC Demonstration Project

南澳多端柔性直流输电示范工程的系统调试共完成了87个试验项目。功率阶跃试验显示,系统对换流器输出无功功率阶跃和有功功率阶跃的响应灵敏。功率反送试验、风电通过柔性直流并网试验和运行模式切换试验显示,南澳柔直工程能够适应各种工况运行。风电低电压穿越试验显示,该工程对交流电网故障具有较强的故障穿越能力。直流系统故障试验显示,故障后各站直流保护正确动作跳闸,控制保护功能正常。经调试检验,系统相关一、二次设备经调试检验总体符合设计要求,各项功能和性能指标满足工程设计规范要求。

A total of 87 test items has been completed in the system commissioning of Nan＇ao VSC-MTDC Demonstration Project. The power step tests show that the system is sensitive to the reactive or active power step. The active power inversion test, wind power grid test and operation mode changeover test show that Nan＇ao project can operate steady in all kinds of system conditions. The wind power LVRT test shows that the project has strong fault ride-through capability on AC grid failure. The DC system fault test shows that DC protections at each station have tripped correctly, their control and protection functions are proper. It is verified by the commissioning that the related primary equipment and secondary equipment can completely meet the design requirment, and the engineering functions and performance of the equipment are in agreement with the design specification.