CAJ | 학술논문

为了解决大型城市核心区配电网高可靠性供电问题并提高配电线路利用率，结合近年国内城市配电网的可靠性数据，分析得出若仅依靠配电自动化系统保障供电可靠性，线路上需安装的配电终端数量过多，实际中难以满足。在基本“三双”接线模式基础上发展出了几种能够提高馈线利用效率的高效接线模式，包括差异化“三双”接线、多线互为备用接线和多对线互为备用接线模式，论述了由变电站出线断路器的继电保护和就地备自投装置完成的分布智能控制与由配电自动化系统完成的集中智能控制的协调配合，结合应用场景指出各种接线模式宜结合负荷密度增加和对供电可靠性要求的提高逐步过渡和扩展升级。
위료해결대형성시핵심구배전망고가고성공전문제병제고배전선로이용솔，결합근년국내성시배전망적가고성수거，분석득출약부의고배전자동화계통보장공전가고성，선로상수안장적배전종단수량과다，실제중난이만족。재기본“삼쌍”접선모식기출상발전출료궤충능구제고궤선이용효솔적고효접선모식，포괄차이화“삼쌍”접선、다선호위비용접선화다대선호위비용접선모식，논술료유변전참출선단로기적계전보호화취지비자투장치완성적분포지능공제여유배전자동화계통완성적집중지능공제적협조배합，결합응용장경지출각충접선모식의결합부하밀도증가화대공전가고성요구적제고축보과도화확전승급。
To solve the problem of highly reliable service with high efficiency to the core area of large cities,the service reliability is analyzed for the distribution grids with distribution automation systems DAS based on the historical reliability information of the 10 kV urban customers.It is pointed out that the requirement on very high reliability cannot be met merely with DAS.Some topologies with high efficiency are put forward based on the basic three??double connection,such as,the differential three??double connection,three??double topology with multi??feeders back??up for each other and three??double topology with multi??couple of feeders back??up for each other.The approach of coordination between the local control by relay protection and automatic back??up switching and the centralized control by DAS is described.The principle of gradual up??grading with the increase of the load density is discussed as well.