基于复杂网络的电-气-热综合能源系统健壮性分析

随着综合能源系统网络规模的不断扩大以及耦合程度的不断加强，对其结构的稳定性和运行的安全性提出了更加严格的要求，为此将复杂网络理论运用到综合能源系统的静态结构与健壮性分析中。利用NetworkX对系统进行网络拓扑建模并调用G. degree、nx. betweenness_centrality(G)、nx. average_clustering(G)等算法计算其网络特征参数，在此基础上进一步分析计算结果，研究综合能源系统的无标度与小世界等复杂网络特性。引入网络破碎度、连通因子、供能效率比3个分析指标，模拟系统受到7种不同模式的破坏，通过观察不同故障下电-气-热综合能源系统的网络破碎度、连通因子、供能效率比的变化曲线，综合分析系统在不同故障下的健壮性并对系统中的脆弱环节进行识别，研究成果为建设更可靠的大规模综合能源系统网络体系提供了参考和决策支持。

Robustness analysis of electricity-gas-heat integrated energy system based on complex network

With the continuous expansion of the integrated energy system network scale and the strengthening of the coupling degree, more stringent requirements are put forward for the stability of its structure and the security of its operation. Therefore, the complex network theory is applied to the static structure and robustness analysis of the integrated energy system. NetworkX is used to build the network topology model of the system and its network characteristic parameters are calculated by G. degree, nx. betweenness_centrality(G),nx. average_clustering(G) and other algorithms, based on the analysis of the calculative results, the complex network characteristics such as scale-free and small world of the integrated energy system are studied. Three analysis indexes of network fragmentation degree, connectivity factor and energy efficiency ratio are introduced to simulate seven different attack modes on the system. By observing the curves of the above three indexes of the electricity-gas-heat integrated energy system under different faults, the robustness of the system is comprehensively analyzed and the vulnerable links of the system are identified. The research results provide reference and decision support for building a more reliable network system for large-scale integrated energy system.