采用三相模型的智能中低压配电网的评价与优化

项目名称： 采用三相模型的智能中低压配电网的评价与优化

项目编号： No.51467012

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 电工技术

项目作者： 王淳

作者单位： 南昌大学

项目金额： 46万元

中文摘要： 随着家庭/小区单相可再生分布式电源的大量接入以及家用电动汽车的普及，未来的智能中低压配电网中三相不平衡问题将更为突出。为了分析、评价和优化三相不平衡的中低压配电网，本项目拟针对以下问题展开研究：1）充分考虑非理想因素，建立精确的元件模型，构建统一的、能描述中低压配电网各种拓扑结构的 三相四线模型，完善配电网三相确定性潮流的计算方法；2）采用合适的概率模型描述配电网中的随机因素，合理处理不同相之间的随机变量的相关性问题，开展配电网三相概率潮流计算方法的研究；3）提出定量指标，构建配电网的确定性评价方法和概率性评价方法；4）依托家庭能量管理系统，建立以三相均衡化为主、同时计及削峰填谷、减少电能损耗、提高电压质量的优化调度模型，实现对分布式电源、电动汽车及可调家用电器的综合管理。

中文关键词： 智能中低压配电网；分布式发电；三相不平衡；综合评价；家庭能量管理系统

英文摘要： As an increasing number of renewable single-phase distributed generation (DG) installed within consumers' premises/community and connected to the domestic electricity supply network, and an increasing popularity of household electric vehicle (HEV), the imbalance between three-phases will be more prominent in smart medium-low voltage distribution network. In order to analyze, evaluate and optimize the imbalanced three-phase medium-low voltage distribution network, we try to study the following issues in the project. 1) To improve deterministic three-phase power flow calculation method for distribution network through establishing accurate component models with full consideration to the non-ideal factors, and building a unified three-phase four-wire model, which can describe medium-low voltage distribution network with various topologies. 2) To study the method for calculating probability three-phase power flow of distribution network by describing the random factors using appropriate probabilistic model and reasonably handling the correlation of random variables between different phases. 3)To build deterministic and probability evaluation methods for distribution network by giving the quantitative indexes. 4)Relying on home energy management system, to establish an optimal model, which takes three-phase equalization as the main object and takes into account the load shifting, energy consumption reduction and voltage quality improvement, so as to realise an integrated management for DG, HEV and adjustable household appliances.

英文关键词： smart medium-low voltage distribution network;distributed generation;imbalance between three-phases;comprehensive evaluation;home energy management system