CAJ | 학술논문

大规模分布式电源的广泛接入对有源配电系统动态特性分析，尤其是发生大扰动后的系统稳定性分析提出了新的挑战。因此，一种可靠、高效且具有良好数值稳定性的动态仿真算法对有源配电系统的分析研究至关重要。文中提出一种基于隐式投影算法的有源配电系统动态仿真方法。该方法为2阶精度算法，其数值稳定性具有与A稳定近似的特征，即算法的数值稳定域基本不受其外部积分步长的限制，使得隐式投影算法的计算效率较传统数值积分方法具有显著提升，适于含大规模分布式电源的有源配电系统动态仿真分析。以低压有源配电系统算例和IEEE 123节点算例为例，通过与商业仿真软件和传统隐式梯形法的比较，验证了算法的正确性和有效性。
대규모분포식전원적엄범접입대유원배전계통동태특성분석，우기시발생대우동후적계통은정성분석제출료신적도전。인차，일충가고、고효차구유량호수치은정성적동태방진산법대유원배전계통적분석연구지관중요。문중제출일충기우은식투영산법적유원배전계통동태방진방법。해방법위2계정도산법，기수치은정성구유여A은정근사적특정，즉산법적수치은정역기본불수기외부적분보장적한제，사득은식투영산법적계산효솔교전통수치적분방법구유현저제승，괄우함대규모분포식전원적유원배전계통동태방진분석。이저압유원배전계통산례화IEEE 123절점산례위례，통과여상업방진연건화전통은식제형법적비교，험증료산법적정학성화유효성。
The widely integrated distributed generators (DG) have brought challenges of analyzing the dynamic characteristics of active distribution networks (ADNs), especially the stability analysis under a large disturbance. A highly efficient and reliable dynamic simulation algorithm with good numerical stability is therefore of great importance for the study of ADNs. This paper presents a novel dynamic simulation algorithm of ADNs based on the implicit projective method. It is a second-order integration method and the numerical stability of which is similar to the A-stable property, namely, the numerical stability is barely limited by the step sizes of its outer integrator. The efficiency of the proposed algorithm is improved significantly compared with the traditional integration methods. It is especially suitable for the dynamic simulation and stability analysis of the ADNs integrated with a number of DGs. Case studies based on the low-voltage ADN benchmark and the IEEE 123-node feeder show the feasibility and effectiveness of the proposed method, which is verified through the comparisons with the commercial simulation tool and the traditional trapezoidal method.