中文摘要：

近年来随着天然气发电比重的不断增加和电转气（power to gas,P2G）技术的逐步成熟,电力系统和天然气系统的耦合程度随之加深,只针对电力系统的规划方法已经不能满足电-气混联综合能源系统的规划和运行需求。在此背景下,考虑热电联产（combined heat and power,CHP）机组和电转气装置,对电-气混联综合能源系统的协同规划问题做了些初步研究。首先,引入能源中心概念,其中能源载体可从某种形式转换成其他形式,如热电联产机组,并对能源中心进行建模。在此基础上,构建了包含能源中心和电转气装置等的综合能源系统的非线性模型并进行线性化处理。之后,以电-气混联综合能源系统的投资成本、运行成本以及表征可靠性的能量短缺成本之和最小为规划目标,采用基于通用代数建模系统（general algebraic modeling system,GAMS）平台的CPLEX求解器对常规发电机组、热电联产机组、电转气厂站、燃气锅炉、输电线路和天然气管道的选址定容问题进行优化,并对规划方案的可靠性以及电转气厂站消纳间歇性可再生能源的效益进行评估。最后,用综合能源模拟系统对所提出的方法做了说明。

英文摘要：

The increasing penetration of natural gas power generation and ever-developing power to gas （P2G） technology in recent years have promoted the coupling between the power system and the natural gas system than ever before. This coupling has introduced new challenges to the planning of integrated electricity and natural gas energy systems, as the existing power system planning models normally overlook the impacts of natural gas or other energy systems. Given this background, this paper studies the collaborative planning of integrated energy systems with combined heat and power （CHP） plants and P2G stations. First, the energy center concept is introduced and modeled, and in an energy center various kinds of energy conversion such as CHP can be carried out. A nonlinear model for an integrated energy system with multiple interconnected energy centers and P2G stations is next presented and linearized. Then, this paper takes the minimum overall cost as planning objectives including investment cost, operation cost and energy shortage cost characterizing the reliability of integrated energy systems, optimizes the location sizing problems of traditional generating units, CHP plants, P2G stations, gas-fired boilers, transmission lines and natural gas pipelines with using general algebraic modeling system（GAMS） -based CPLEX solver, and evaluates the reliability of the planning scheme and the benefit generated by P2G stations in promoting the capability of accommodating intermittent renewable energy. Finally, the effectiveness of the proposed collaborative planning model is demonstrated by a sample integrated energy system.