面向终端集成供能系统的多元可控负荷规模化互补协同方法

Integrated energy system (IES), which is highly efficient when operates in the optimized conditions, is the new trend to improve the utility efficiency of energy and consumption capacity of renewable energy. Based on data mining methods and interdependent network theory, this project aims to conduct the research on building and optimizing the generalized multiple controllable load (GMCL) which considers the controllable characteristics, time-varying characteristics and exchange characteristics as an integrated part among the electricity, gas and heat loads. The research contents of this project include three sections: 1 To ensure the precise configuration of adjustable capability, this section aims to analyze the control characteristics and dynamic response characteristics of generalized multiple controllable load chain (GMCL). Then, the dynamic search method of generalized multiple controllable load chain (GMCL) under multi-timescale is proposed. 2 Based on the deeply analysis of the interdependency relationships among power grid, gas network, heat pipe network and communication networks, this project aims to build the energy-communication coupled networks model with interdependent networks theory and design communication connected GMCL to simulate the realistic scenario. 3 Within the ranges of municipal or rural integrated energy system (IES),this section aims to propose the coordinated optimization model and algorithm considering the complex coupled constraints of electricity, gas and heat systems. The above research can improve the utility efficiency of energy and consumption capacity of renewable energy. Furthermore, it can provide theoretical guidance and technical support on the improvement of the energy reform and refined operation.

面向用户电/气/热等多种用能需求的终端集成供能系统是能源梯级高效利用和可再生能源消纳的新趋势。本课题拟从集成供能系统的多能互补和供需互动的要求角度出发，研究构建电/气/热等多元可控负荷的集群并进行互补优化。课题的研究内容包括：1）针对不同能源形式在传输和品质上的差异性问题，设计能量转换环节的延时矩阵、能效矩阵、能源需求和负荷用能需求矩阵，实现对能流转换关系的统一描述和耦合模型的构建；2）针对用户用能需求的替代性和负荷控制模式的多样性问题，研究基于 “运行数据＋响应模式”的多元可控负荷主动响应能源需求的分析方法；3）针对多元负荷数量多、单一容量小，单独调控难度大的问题，研究“群内自治，群间协调”的规模化多元可控负荷分层互补协同模型及其多重近似最优解求解方法。相关研究成果可以提高多能互补终端集成供能系统的供需协调能力,为提升我国能源综合利用水平和可再生能源的消纳能力提供理论和技术支持。

可控电负荷深度参与可再生能源消纳在电力系统中已得到越来越多的关注，与此同时，利用冷热电联供系统和蓄热装置等能源交换环节的可调潜力进行综合能源利用也已经成为共识，近年来在国内外得到了示范应用。本项目针对多能互补中考虑能量传输延时和转换效率的多能流耦合分析问题以及供需互动中考虑不同用能需求和负荷响应模式的多元负荷需求响应能力分析问题，本项目展开了以下研究：.电/气/热网络的能量传输的延时不同、能量转换的效率不同，这是多能互补集成供能系统区别于单一能源系统的一个重要特征。因此，为了对多能互补集成供能系统的协调和耦合过程进行统一分析，研究了能源转换环节设计有针对性的矩阵化能量表达方式，从而实现多能互补集成供能系统的耦合分析。.多元可控负荷的用能需求可以互相替代，并且存在电价/激励等多种负荷响应控制模式，这是多能互补集成供能系统的另一个重要特征。因此，为了对多能可控负荷的供需互动能力进行综合分析，考虑实际运行工控、外界环境变化、用户用能状态等因素，分析了不同多元可控负荷的响应特性和控制特性，设计了有针对性的多元可控负荷综合需求响应能力的分析方法。