超高压段内采用两个电压等级才能适应电网发展的实际需求

从适应电网个各发展阶段中不同而又连续的实际需要出发，对照其他国家国家的实用经验，论述了电网在超高压段内应具备两个电压等级才能适应其多阶段持续发展的需要，最后对我国制定电压等级的工作历程进行了简要的回顾和展望，提出了明确的结论和建议，供进一步讨论。

USING TOW VOLTAGE GRADES OF EHV RANGE TO SUIT PRACTICAL NEEDS OF POWER GRID DEVELOPMENT

To suit the practical demands of power grids that are different and consecutive under various development stages,it is dissertated that two EHV voltage grades should be configured for EHV power grid to meet the needs of its continuous multistage development,the pragmatic experiences from many other countries are renewedly checked up and compared.The process to determine the voltage grade in China is briefly reviewed and its prospect is described,some explicit conclusions and suggestions were given for further discussion.