中心城区10千伏配电网典型供电模式研究

发布时间：2018-03-21 11:03

本文选题：中心城区　切入点：配电网　出处：《华北电力大学》2015年硕士论文　论文类型：学位论文

【摘要】：目前,我国许多城市的配电网采用的接线主要以架空辐射、多分段单联络、多分段适度联络、电缆单环和双环为主,配电网供电可靠性指标的水平与日本、法国、新加坡等发达国家相比,仍有较大差距。新加坡配电网合环运行,系统短路电流水平较高,且配电站的二次保护配置比较复杂,不适合作为我国配电网的发展方向;巴黎配电网的高可靠性主要依靠合理的设备冗余和坚强的网架结构来实现,与我国配电网的中远期发展方向相符。围绕配电网可靠性目标,结合不同区域的配电网发展要求,提出适合我国配电网的接线方式,达到新加坡、法国等发达国家的配电网水平。本文选取宁波市的城市核心区作为典型区域,结合典型供电模式的近远景衔接分解工程、提出设备选型、导线选择、无功补偿、继电保护、配电网自动化模式、通信组网等采用的原则、一般边界条件下规划水平年可靠性计算等。
[Abstract]:At present, the distribution networks in many cities in China are mainly connected by overhead radiation, multi-segment single connection, multi-segment moderate connection, cable single-ring and double-ring, and the level of power supply reliability index of distribution network is similar to that of Japan and France. Compared with the developed countries such as Singapore, there is still a big gap. Singapore distribution network operates in close loop, the system short-circuit current level is relatively high, and the secondary protection configuration of distribution stations is more complex, so it is not suitable for the development direction of distribution network in China. The high reliability of Paris distribution network mainly depends on reasonable equipment redundancy and strong grid structure, which is consistent with the medium and long term development direction of distribution network in China. In this paper, the urban core area of Ningbo city is selected as the typical region, and the near prospect connecting and decomposing project of typical power supply mode is combined with the near future connection and decomposing project of typical power supply mode, which is suitable for the distribution network of our country and reach the level of the developed countries, such as Singapore, France and so on. The principles of equipment selection, wire selection, reactive power compensation, relay protection, distribution network automation mode, communication networking, and reliability calculation of planning level year under general boundary conditions are proposed.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM727

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