考虑电压调整约束的多个分布式电源准入功率计算

针对分布式电源准入容量计算的问题,提出了考虑电压调整约束后的准入功率优化计算模型。该模型的特点是能够模拟有载调压变压器、分布式电源事故停运以及多个分布式电源的情况。对于多个分布式电源接入的情况提出了至少准入功率的概念。根据双层优化理论,建立了以准入功率最大化为上层优化目标、满足电压约束为下层优化目标的计算模型。通过112节点系统的算例分析,结果表明所提出的准入功率计算模型是有效可用的。另外,算例还分析了分布式电源接入位置对准入功率的影响。

Computing the Maximum Penetration Level of Multiple Distributed Generators in Distribution Network Taking into Account Voltage Regulation Constraints

An optimization method is proposed for computing the maximum penetration level of multiple distributed generators,taking into account voltage regulation constraints.Under-load tap changing transformer is modeled using a switch function,and the impact of distributed generator outage is included.We analyze how the location of distributed generators affects penetration level,and suggest a bi-level optimization model to accommodate this effect.In the proposed mathematical model,the penetration level of distributed generators is maximized in the upper level optimization,while the lower level optimization ensures that voltage constraints are satisfied even under the worst case.Numerical algorithms are described in sufficient detail,together with test results of a 112 bus system.