交流配电网与直流配电网的经济性比较Economic Comparison of AC and DC Distribution System
郑欢;江道灼;杜翼;
摘要(Abstract)：
对目前配电网中的负载进行了定义与分类,并对交、直流配电网的最大传输容量分别进行了推导;对交、直流配电网主要设备的造价与传输效率分别进行了计算与分析,对于直流断路器、直流变压器等尚未实现商业化应用的装置,根据其研发费用对未来的市场价格进行了估算。以典型结构的配电网为例,分别对其采用交流配电网、±7.5 kV及±15 kV直流配电网供电时的投资成本与传输损耗进行计算,进而对其进行经济性比较。研究表明,直流配电网的最大传输容量与投资成本皆大于交流网,且电压等级越高,其最大传输容量与投资成本越大;直流配电网的传输损耗率低于交流网,且随着电压等级的提高而下降;中压直流负载的比例越高,直流配电网的投资成本越低,传输损耗率越小。
关键词(KeyWords)： 直流配电网;交流配电网;经济性比较;投资成本;传输损耗率
基金项目(Foundation): 国家863高技术基金项目(2013AA050104)~~
作者(Author): 郑欢;江道灼;杜翼;
Email:
DOI: 10.13335/j.1000-3673.pst.2013.12.018
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