低压直流配电网电压等级序列的经济性研讨

Economic Study on Voltage Grade Sequence of Low Voltage DC Distribution Network

直流微网作为实现能源互联网的重要支持,近年来发展迅速,国内外也有很多在研的示范工程,但是所研究的直流微网没有统一的配电网电压等级,这影响了直流微网的进一步发展。参照交流电压等级序列的约束条件以及规则,参考低压直流现有的电压等级序列的确定准则,考虑到影响智能园区电压等级序列选择的特殊要素,推荐了一组适用于智能园区直流配电网的电压等级序列,并对电压等级序列的推荐值的经济性进行了分析和探讨。证明了所选取的低压直流电压等级序列的正确性和适用性。

As an important support of energy internet,DC microgrid has developed rapidly in recent years,and there are many projects researched at home and abroad.However,the DC microgrid does not have a general voltage level,which affects the further development of DC microgrid.The limitation factors and rules of the AC voltage level sequence were referenced,and the determination principle of the existing voltage level sequence of low voltage DC was also referenced,and considering the special factors affecting the selection of the voltage level sequence of the intelligent park,the voltage suitable for DC distribution network in intelligent park was given.Then the economics for the recommended value of the voltage rank sequence was analyzed and discussed.The correctness and applicability of the selected low voltage DC voltage level sequence were proved.