Although DC system had many advantages in long-distance and capacity transmission, DC system monopole operation might have impact on safe operation of Shanghai grid.

虽然直流系统在长距离、容量输电方面有诸多优势，但直流系统单极运行时可能对上海电网的安全运行带来影响。

youdao

According to Gramlich, conventional generation sources like coal and natural gas are occupying the full capacity of the transmission grid, leaving no room for wind.

FORBES: No Comprehensive Energy Bill? That's Not Stopping Energy Lobbyists