直流配电网研究现状与展望

相较交流配电网,直流配电网具有供电容量大、线路损耗小、电能质量好、无需无功补偿,以及适于各类电源和负载接入等优点。较为详细地论述了直流配电(相对交流配电)的特点、优势及其网络的整体概念,提出了直流配电网的拓扑结构,总结了直流配电网在规划设计、调度控制、继电保护及关键设备等方面的研究情况,最后指出了直流配电网优化调度、故障诊断与定位、直流断路器等尚需深入研究的问题。

Research Status and Developing Prospect of DC Distribution Network

In contrast to the AC distribution network,the DC distribution network has higher power supply capability,lower line losses,better power quality,freedom from reactive compensation,and is suitable for all kinds of power supply(including renewable energy power) and load access,etc.This paper deals with the DC distribution(relative to the AC distribution) characteristics,its advantages and overall concept in detail;puts forward its network topology structure;and summarizes the network planning design,dispatching control,relay protection,key equipment,and other aspects of the research.Finally,it is pointed out that the DC distribution network optimization dispatching,fault diagnosis and location,DC breaker,etc,are problems for further study.