面向综合能源系统的?流追踪模型与计算方法

Tracing Model and Calculation Method of Exergy Flow for Integrated Energy System

现有电力系统潮流追踪计算方法在含有电、气、热等多能源耦合的综合能源系统中存在局限性。?作为多种能源形式的共有属性,能够统一表征综合能源系统的有效能。为明晰综合能源系统中有效能在网络中的流动踪迹,文中基于等效?流机理模型建立了综合能源系统?流追踪模型,分别提出了综合能源系统顺序?流追踪方法、逆序?流追踪方法和?流分配解析追踪方法。通过典型综合能源系统算例,全面分析了综合能源系统网络中?流在源-网-荷的分配关系,并验证了?流追踪模型的正确性。最后,对?流追踪在能源价格制定、可再生能源消纳路径、不良?数据辨识、规划与运行优化等方面的应用前景进行了展望。

The power flow tracing calculation method for power systems has limitations for integrated energy systems(IESs)containing multiple coupling energy sources such as electricity,gas and heat.Exergy,as a common property of multiple energy forms,can uniformly characterize the effective energy of an IES.In order to find the traces of effective energies flowing in the network of the IES,this paper establishes an exergy flow tracing model for IES based on the equivalent exergy flow mechanism model.And the exergy flow tracking methods of upstream-looking,downstream-looking,and exergy flow distributing parse are proposed.By using a typical IES case,this paper comprehensively analyzes the exergy flow distribution relationship between source,grid and load in the IES,and verifies the correctness of the exergy flow tracing model.Finally,the application prospect of exergy flow tracing in energy price setting,renewable energy accommodation path,identification of bad exergy data,and planning and operation optimization is presented.