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考虑双向耦合的电-气综合能源系统时序故障恢复方法
陈玮, 丁筱, 施云辉, 郭创新
浙江大学 电气工程学院,浙江 杭州 310027
摘要:
电力系统和天然气网络通过双向耦合可以实现高可靠性运行。为解决电-气综合能源系统在发生故障后的恢复问题,提出了一种时序故障恢复方法。一方面,考虑燃气轮机和电转气设备的双向耦合特性,在恢复过程中通过调度其出力大小实现电力-天然气网络的互补共济;另一方面,考虑到恢复过程中大多设备具有时序特性,如储能电池容量、负荷大小、风光机组出力大小以及网络拓扑的变化,建立了一个多时序的故障恢复混合整数规划模型,并通过分段线性化的手段将模型处理得易于求解,从而得出故障恢复过程中最优的拓扑开关操作序列。最后,通过对13节点配电网和6节点配气网的联合仿真证明了所提方法的有效性。
关键词:  电-气综合能源系统  故障恢复  燃气轮机  电转气设备
DOI:10.16081/j.epae.201908006
分类号:TM73
基金项目:国家重点研发计划项目(2016YFB0900100);国家自然科学基金资助项目(51877190)
Sequential fault restoration method for electricity-gas integrated energy system considering two-way coupling
CHEN Wei, DIN Xiao, SHI Yunhui, GUO Chuangxin
College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Abstract:
Power system and natural gas networks can achieve high reliability operation through two-way coupling. In order to solve the recovery problem of electricity-gas integrated energy system after failure, a sequential fault restoration method is proposed. On the one hand, considering the two-way coupling characteristics of gas turbines and P2G(Power-to-Gas) equipment, the complementary mutual aid of the electricity-gas network is realized by scheduling the output of the gas turbine and P2G equipment during the recovery process. On the other hand, considering the sequential characteristics of most devices in the recovery process, such as the capacity of energy storage battery, load consumption, wind turbine output and network topology change, a mixed integer programming model with multi-sequence for fault restoration is established, which is easily solved by piecewise linearization, and the optimal sequence of topology switch operations in the fault restoration process is obtained. Finally, the effectiveness of the proposed method is proved by the joint simulation of 13-bus power distribution network and 6-node gas distribution network.
Key words:  electricity-gas integrated energy system  fault restoration  gas turbine  power-to-gas equipment

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