【摘要】 根据当前发电量及用电量的不断增加,通过对电网运行技术经济性比较,阐述了公用电网及用户接入电网电压等级的选择与确定。对500kV、220kV、110kV等公用电网变电所变压器绕组电压等级和用户接入时电压等级提出了较为完善的选择原则,举例说明用户在具体选择电压等级时,需结合附近电网情况进行技术经济比较后论证确定,不能简单地根据容量一概而论。更多还原

【Abstract】 The paper explained the selection of voltage level for the public and the exclusive electric network by technical and economic analysis of power system operation according to the increasing generated electricity and demanded electricity.The paper gave main principles on voltage level selection for the public and the exclusive network transformers.And it illustrated that the voltage level selection is based not only on capacity,but also on technical and economic analysis.更多还原