家庭小区型多微网典型特征及工程设计

Typical characteristics and engineering design of residential multi-microgrids

为实现多分布式发电接入和用户高效可靠供电,可将微网划分成多个计划性的子微网,以降低控制复杂度,形成多微网互联运行。随着分布式光伏发电系统在用户侧的规模化接入,家庭小区型多微网的应用场景逐渐增多。首先从源荷、结构、技术、运营四方面详细阐述家庭小区型多微网的典型特征;在此基础上,按照需求分析、电气设计、评估检验的路线,提出系统工程设计的一般流程,给出系统设计目标和配置、一二次侧电气设计要求。最后结合某小区实际情况,综合考虑安全性、经济性等需求,给出该多微网示范工程的初步设计方案,为家庭小区型多微网的推广提供参考价值。

In order to achieve the access of multi-distributed generation and efficient and reliable power supply,the microgrid can be divided into several planned sub-microgrids to reduce the complexity of control and form multi-microgrid interconnection operation.With the large-scale access of the distributed photovoltaic power generation system on the user side,the application scenario of residential multi-microgrid becomes more common.First,the typical characteristics of residential multi-microgrid from four aspects,source-load,structure,technology and operation are described.On this basis,according to the rough designing route consisting of requirement analysis,electrical design,evaluation and inspection,the general process of system engineering design is proposed.Finally,combined with the circumstances of a community,considering the requirements of security and economy,the preliminary design scheme of the multi-microgrid demonstration project is given,which provides reference value for the promotion of residential multi-microgrid.