基于源储荷协同的微电网分层控制研究

发布时间：2018-12-13 02:44

【摘要】：随着分布式发电及微电网技术的迅速发展,微电网将成为未来智能配电网的核心单元,发挥至关重要的作用,一方面,微电网并网运行可实现源储荷多种可调资源的组合优质并网,提升分布式电源的并网水平;另一方面,微电网独立运行又可促进分布式能源的就地消纳利用。本文从含典型源储荷的微电网建模入手,构建可全面表征多工况运行特性、复杂度有限、且可用于实时控制的器件级微电网模型。分析了微电网主从/对等/分层三种不同的控制模式及对应的控制策略,进而掌握不同控制模式下不同控制策略的运行机理和特点。分别针对主从/对等控制模式研究分层协同控制架构构建方法,分析主从/对等控制模式下协同控制机理,为源储荷的全面协同控制提供机理基础。提出主从模式下源储荷多时序优化协同的微电网分层控制方法,以及对等控制模式下基于曲线平移的分层协同控制方法,促进分布式电源的主动就地消纳,从而实现整个微电网的协同优化运行。并利用PSCAD/EMTDC电磁暂态仿真平台对典型微电网系统进行仿真研究,证明所提分层控制架构的合理性、以及基于源储荷协同的分层控制方法的有效性和适应性。
[Abstract]:With the rapid development of distributed generation and microgrid technology, microgrid will become the core unit of smart distribution network in the future. The operation of microgrid can realize the combination of multiple adjustable resources of source storage and load, and improve the level of grid connection of distributed generation. On the other hand, the independent operation of microgrid can promote the local absorption and utilization of distributed energy. Starting with the modeling of microgrid with typical source storage, this paper constructs a device level microgrid model which can fully represent the characteristics of multi-condition operation, has limited complexity and can be used for real-time control. This paper analyzes three different control modes and corresponding control strategies of microgrid master-slave / peer-to-peer / stratification, and then grasps the operation mechanism and characteristics of different control strategies under different control modes. Based on the master-slave / peer-to-peer control mode, this paper studies the construction method of hierarchical cooperative control architecture, analyzes the cooperative control mechanism under master-slave / peer-to-peer control mode, and provides the mechanism foundation for the overall collaborative control of source load storage. In this paper, a hierarchical control method for microgrid based on multi-sequence optimization of source storage and load in master-slave mode and a hierarchical cooperative control method based on curve translation in peer-to-peer control mode are proposed to promote active local absorption of distributed power supply. In order to achieve the whole microgrid coordinated optimization operation. The PSCAD/EMTDC electromagnetic transient simulation platform is used to simulate the typical microgrid system, which proves the rationality of the proposed hierarchical control architecture, and the effectiveness and adaptability of the layered control method based on source storage and load cooperation.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM727

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