说明：  区域综合能源系统中热-电联合建模，通过使用扩展牛顿拉夫逊算法进行统一求解，同时得出系统内热力系统和电力系统的状态参数。
(The joint thermal-electrical modeling of regional integrated energy system is solved by using the extended Newton-Raphson algorithm, and the state parameters of the thermal system and the power system in the system are obtained.)