面向高渗透率分布式光伏的分层储能系统布局配置优化研究

项目名称： 面向高渗透率分布式光伏的分层储能系统布局配置优化研究

项目编号： No.51507161

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 电工技术

项目作者： 李蓓

作者单位： 中国电力科学研究院有限公司

项目金额： 21万元

中文摘要： 在高渗透率分布式光伏并网应用场景下，多逆变器综合并网产生的谐波电流对配电网影响显著，同时存在电压波动、潮流分布、电能质量、负荷预测以及需求侧管理等问题，而保持多逆变器接入的系统稳定以及广域分布光伏单元的协调控制成为亟待解决的问题。基于储能装置四象限调节功能进行储能系统的合理布点及容量优化配置，是储能技术在智能配电网领域应用的前提与基础；兼顾集中储能的大规模容量优势与分布式储能的灵活布局及集群效应，提出分层储能概念，有利于实现储能系统容量及配置优化，提高储能装置利用率。项目依托高渗透率光伏接入场景，针对联络点容载比、电网电压稳定、以及多逆变器并联集群控制等问题，设计分层储能架构，开展分层储能系统在高渗透分布式电源并网应用场景下的布点原理、汇聚效应与集群协调控制机理、容量优化配置等基础技术研究，为实现储能系统柔性控制、延长储能系统使用寿命、提升电网对光伏电源的就地消纳能力提供技术依据。

中文关键词： 分层储能系统；分布式光伏发电；储能聚合效应；集群协调控制；储能容量配置

英文摘要： In the application scenario of Distributed PV integrated in the Grid with high penetration, harmonic current produced by multiple inverters connect to the Grid has a significant effect on distribution network, as well as the problems of voltage fluctuations, flow distribution, power quality, load forecasting and demand-side management. System stability with multiple inverters integrated in the Grid and decentralized coordinated control of wide distributed PV units have turned into critical problems. Based on the four-quadrant regulation ability, scientific distribution and capacity optimization are the basis and prerequisite, which improve the application of energy storage technology in smart distribution network field. Consideration to capacity advantage of large-scale centralized energy storage and flexible layout and clustering effect of distributed energy storage, the conception of hierarchical energy storage system is proposed. It is beneficial to capacity optimization and improving the utilization of energy storage device. This project oriented to PV integrated in Grid with a high penetration, solving problems such as capacity-load ratio of PCC(points of common connection), grid voltage stability and multiple inverters parallel cluster control by way of researching on the structure of hierarchical energy storage system storage, launching basic technology research on distribution principle, clustering effect, cluster coordination control mechanism and capacity optimization of hierarchical energy storage integrated in the Grid with a high penetration. Such research should provide a technology basis for flexible control, life extending of the energy storage system and the scheduled ability of PV generation.

英文关键词： Hierarchical energy storage system ;Distributed PV system;Aggrearate effect;Cluster coordination and control;Capacity Configuration