CAJ | 학술논문

随着分布式能源发电容量的不断增长，分布式能源并网带来的电能质量和电能损耗问题日益严重，在配电网中采用直流配电可有效缓解这一问题。近年来由于电力电子技术的快速发展，交直流变流器、DC/DC换流器的工作效率和额定容量大幅提升，降低了直流供电系统的网络损耗。同时，家用电器对直流电源的兼容性亦不断提高，住宅直流供电技术将成为未来的研究和发展趋势。总结了国内外对住宅直流供电技术的研究现状，分析了住宅直流微网的优势和可行性，提出了1个典型的住宅直流微网系统模型，分析了在构建该模型过程中涉及到的电压等级的确定、供电组网模式的选择、系统的控制与保护设备等问题，给出了相应的参考解决方案，并对住宅直流供电技术的发展提出了几点展望。
수착분포식능원발전용량적불단증장，분포식능원병망대래적전능질량화전능손모문제일익엄중，재배전망중채용직류배전가유효완해저일문제。근년래유우전력전자기술적쾌속발전，교직류변류기、DC/DC환류기적공작효솔화액정용량대폭제승，강저료직류공전계통적망락손모。동시，가용전기대직류전원적겸용성역불단제고，주택직류공전기술장성위미래적연구화발전추세。총결료국내외대주택직류공전기술적연구현상，분석료주택직류미망적우세화가행성，제출료1개전형적주택직류미망계통모형，분석료재구건해모형과정중섭급도적전압등급적학정、공전조망모식적선택、계통적공제여보호설비등문제，급출료상응적삼고해결방안，병대주택직류공전기술적발전제출료궤점전망。
With the increasing of the capacity of distributed energy resources,the problem of power quality and power loss caused by distributed energy resources paralleling in the grid has become a big challenge,which can be effectively alleviated by applying DC supply in distribution networks.In recent years,because of the rapid development of power electronic technology and the significant improvement of work efficiency and rated capacity of AC/DC converter and DC/DC converter,the network loss of DC power supply system has been reduced.Meanwhile,the compatibility of household appliances with DC power supply has been improved,so the residential DC power supply technology will inevitably become the trend of research and development in the future.The research status of residential DC power supply technologies around the world were systematically reviewed,and the advantages and feasibility of these technologies were analyzed.Finally,a typical residential DC micro-grid model was proposed.The involved technical problems,such as the determination of voltage level,the choice of networking mode and the system protection and control were discussed in detail.Some prospects on the development of DC power supply technologies were also presented.