【摘要】 随着分布式电源的大力发展,其对原有系统产生了巨大影响。文中以小水电为例,首先分析分布式电源的启停对无功电压控制的影响,然后给出考虑单个分布式电源启停的准入极限功率计算模型。接着分析了多个分布式电源接入系统后,原有的计算模型结果可能过于乐观,提出了多分布式电源接入的至少准入容量的概念,它反映了“最恶劣”机组组合情况下的准入极限功率,并给出了基于主从决策的双层优化模型和求解算法。最后用IEEE 112节点系统的仿真结果证明了模型、算法的有效性。更多还原

【Abstract】 With the rapid development of distributed generators,the impact on the power system is not to be neglected.Taking small hydro power as an example,this paper firstly analyzes the impact of distributed generators unit commitment on VQC relays.Then a method is proposed for computing the power penetration level taking into account the unit commitment of distributed generators.The above-mentioned model will become overoptimistic when multiple distributed generators are connected into a distribution network.So,the concept of the min-max penetration level is introduced,that is,the max penetration level under the worst generation pattern.And then,a leader-follower decision-making model based on bi-level optimization is proposed.Finally,a 112-bus test system is utilized to evaluate the proposed model and the results provided.更多还原