考虑对外支撑能力的电热综合能源系统建模及优化运行

Optimal Operation of Integrated Energy System Considering the Support Capacity to Power Grid

综合能源系统内部含有可调资源且运行方式灵活多变,在一定程度上对电网发挥支撑能力,辅助电网优化运行。基于此,提出了计及对外支撑能力的综合能源系统优化运行模型。首先,以电热综合能源系统为研究对象,建立电热综合能源系统模型;其次,考虑外部电网的期望支撑需求,以最大程度满足外部电网期望支撑需求为目标,建立电热综合能源系统优化运行模型;考虑模型的非线性,采用细菌群体趋药性优化算法求解。最后,以我国北方某综合能源系统为例,验证了所建模型的有效性,通过调整电热综合能源系统灵活运行,能够有效地满足外部电网的期望支撑需求,发挥对外支撑作用。

The integrated energy system contains adjustable resources and flexible operating modes,which to a certain extent play a supporting role in the power grid and assist in optimizing its operation.Based on this,an optimal operation model of integrated energy system considering support capacity to power grid was proposed.Firstly,the electric-heat integrated energy system(EHIES)was considered as the research object and the EHIES model was established.Secondly,considering the expected support demand of external power grid and aiming at meeting the expected support demand of external power grid,the optimal operation model of EHIES was established.Considering the complexity of the model,the Bacterial Colony Chemotaxis optimization algorithm was used to solve it.Finally,an integrated energy system in northern China was considered as an example and the effectiveness of the proposed model was verified.By adjusting the flexible operation of the EHIES,it can effectively meet the expected support needs of the external power grid and play an external support role.