考虑需求侧响应的电-氢混合储能系统选址定容

Location and Capacity Planning of Electricity Hydrogen Hybrid Energy Storage System Considering Demand Response

随着分布式电源(distributed generation,DG)在配网接入比例的提高,配网的稳定性受到了剧烈的影响。传统的配电网管理模式很难对多种资源进行协调,因此主动配电网模式逐渐成为电网运营主流。为减小DG接入对主动配电网稳定性的影响,该文建立考虑需求侧响应的电–氢混合(electricity hydrogen hybrid,EHH)储能系统(energy storage system,ESS)双层模型。上层模型以考虑需求侧响应后的最小净负荷波动、最大用户购电成本满意度与用电舒适度为目标,基于电量电价弹性矩阵模型得出最佳分时电价制定策略。下层模型基于上层模型求解出的分时电价策略,以最小EHH-ESS的全生命周期成本(life cycle cost,LCC)、主动配电网电压波动与考虑需求侧响应且接入EHH-ESS后的净负荷波动为目标,通过对EHH-ESS进行最优规划实现其投资经济性、主动配电网负荷稳定性与电压质量的最佳权衡。最后通过扩展的IEEE-33节点验证了该文所提模型的有效性及所采用方法的优越性。同时,通过不同的运营场景对主动配电网的稳定性与EHH-ESS的经济性进行分析,基于NSGA-III算法得到的仿真结果表明:与仅配置EHH-ESS相比,考虑需求侧响应并配置EHH-ESS后,虽然LCC提高了5.16%,但净负荷波动与电压波动分别降低了6.56%与13.33%,验证了在考虑需求侧响应的情况下配置EHH-ESS可最大幅度改善主动配电网的稳定性。

With the increasing proportion of distributed generation(DG)in the distribution network,the stability of the distribution network has been severely affected.The traditional distribution network management strategy is difficult to coordinate the multiple resources.Hence,the active distribution network mode has gradually become the mainstream of the grid operation.To reduce the impact of the DG access on the stability of the active distribution network,this paper establishes a bi-level model of the electric-hydrogen hybrid(EHH)-energy storage system(ESS)considering demand response.The upper model aims at minimizing the net load fluctuation considering demand response and maximizing the customer electricity satisfaction with the electric purchase cost and the customer electricity consumption comfort.Based on the electricity price elasticity matrix model,the optimal time-of-use price formulation strategy is obtained.The lower layer model takes the minimum life cycle cost(LCC)of the EHH-ESS,the voltage fluctuation of the active distribution network and the net load fluctuation considering the demand response and the EHH-ESS as the objective to obtain the optimal EHH-ESS planning scheme.The optimal trade-off between investment economy,load stability and voltage quality of active distribution network is realized by optimal planning of EHH-ESS.Finally,the validity of the proposed model and the superiority of the proposed method are verified through the extended IEEE-33 bus system.Meanwhile,the stability of the active distribution network and the economy of the EHH-ESS are analyzed under different operation scenarios.The simulation results based on the NSGA-III show that,compared with the method only configuring the EHH-ESS,although the LCC is increased by 5.16%after considering demand response and configuring the EHH-ESS,the net load fluctuation and the voltage fluctuation are reduced by 6.56%and 13.33%respectively.It is verified that the configuration of the EHHESS is able to maximize the stability of the active distribution network considering demand side response.