计及静态安全因素的电-热多能流计算方法

Electro-thermal multi-energy flow calculation method considering static safety factors

多能流含义为多种类型的能量流,包括能量流的相互耦合、转换和传输,例如冷、热、电、气等多种能源形式。其中以电热联供为代表的电热耦合多能流系统发展最为迅速,带来诸多效益的同时也使安全问题更加突出。文中考虑安全因素提出电-热多能流系统计算方法。建立电力网络、热力网络模型、耦合元件模型,基于安全因素考虑构建预想故障集合,采用分布式顺序潮流求解算法进行求解。针对电力网络中并网和孤岛两种运行方式进行分析,通过实际算例验证了所提算法的优越性。

Multi-energy flow means multiple types of energy flow,including mutual coupling,conversion and transmission of energy flows,such as cold,heat,electricity,gas and other energy forms. Among them,the electro-thermal coupled multienergy flow system represented by electric heating and co-generation has developed most rapidly,bringing many benefits while making safety problems more prominent. In this paper,the calculation method of electro-thermal multi-energy flow system is proposed considering safety factors. Firstly,the power network model,thermal network model,and coupling component model are established. Then,the expected fault set is constructed based on safety factors. The distributed sequential power flow algorithm is adopted to solve the problem. This paper analyzes the two operation modes of grid-connected and isolated islands in power network,and verifies the superiority of the proposed algorithm through practical examples.