用户侧热电联产机组基于优化热点域的综合需求响应模型

随着综合能源系统的不断发展，用户侧热电联产机组（combined heat and power units，CHP）不断普及，对于降低用户用能成本、提高用户用能灵活性具有重要意义。用户侧燃气CHP能够在影响用户用能的前提下使用户具有综合需求响应能力，对于未来电力系统运行具有重要意义。文章结合抽凝式CHP在多能源系统中实际工作特点，提出了“CHP成本优势”的概念，即CHP与同等电热出力的“常规机组+电/热锅炉”构成的“等效CHP”之间运行成本差值。根据CHP不同运行状态“成本优势”的相对大小，从CHP电热运行域中进一步得到电热负荷的“优化热点域”。采用“优化热点域”顶点的线性组合，建立CHP在综合需求响应中的高效优化模型。算例表明，相比传统CHP电热运行域模型，所提出的模型能够减少综合需求响应优化决策的计算复杂度，从而提高计算效率。

Optimization Hotspot Region Based Integrated Demand Response Model of User-side Combined Heat and Power Unit

With the development of multiple energy system， user-side combined heat and power （CHP） units become more important， which can provide utilization flexibility and reduce energy cost for users. User-side CHP units give energy users the ability to take part in integrated demand response， and theses units are crucial for future power system. According to the operation characteristics of CHP unit， the concept of “cost advantage of CHP” is proposed to describe the operating cost difference between CHP unit and the bundle of traditional electricity generator and boiler. Based on the cost advantage of CHP units， the “Optimization Hotspot Region” is extracted from its operating region. A new integrated demand response model for user-side CHP unit is built using a linear combination of vertex in “Optimization Hotspot Region” to represent its output power and heat. Case study verifies that the proposed model takes less time and iterations in the integrated demand response compared to traditional models.