CAJ | 학술논문

分布式发电和先进电力电子技术在配电层面的广泛应用将使得系统中出现大量的直流环节，极大地改变传统配电网的网架结构和运行方式，对智能电网环境下配电网的快速仿真与模拟提出更高的要求。潮流计算作为快速仿真与模拟最基本也是最关键的分析计算功能必须能够适应这种变化。为此，研究了含多种直流环节的配电网中关键设备的建模方法，提出了考虑不同控制方式的换流器稳态模型，将分布式电源分为可控性和不可控性两大类，并给出了相应的处理方法；提出了基于 Zbus 高斯算法的配电网混合潮流求解方法，并利用换流器实现各个交直流子系统之间的潮流信息互动；最后，基于 IEEE 123节点算例设计了一个典型的配电网算例，对所提出的潮流计算方法进行了测试和验证。
분포식발전화선진전력전자기술재배전층면적엄범응용장사득계통중출현대량적직류배절，겁대지개변전통배전망적망가결구화운행방식，대지능전망배경하배전망적쾌속방진여모의제출경고적요구。조류계산작위쾌속방진여모의최기본야시최관건적분석계산공능필수능구괄응저충변화。위차，연구료함다충직류배절적배전망중관건설비적건모방법，제출료고필불동공제방식적환류기은태모형，장분포식전원분위가공성화불가공성량대류，병급출료상응적처리방법；제출료기우 Zbus 고사산법적배전망혼합조류구해방법，병이용환류기실현각개교직류자계통지간적조류신식호동；최후，기우 IEEE 123절점산례설계료일개전형적배전망산례，대소제출적조류계산방법진행료측시화험증。
The development of distributed generation and advanced power electronic technologies will bring about the appearance of a large number of DC components,thus greatly changing the traditional distribution network structure and operation mode, as well as making higher requirements on distribution fast simulation and modeling (DFSM).As the most basic and critical analytic function of DFSM,the power flow algorithm has to be able to adapt to this change.Therefore,the mathematical model for the key equipment in the distribution system with multiple DC components is studied,including the steady-state model for AC/DC converters in various control modes,and the distributed generator(DG)which is classified into controllable and uncontrollable types.A novel hybrid power flow algorithm based on Zbus Gauss method is then proposed,with which the interaction and exchange of power flow information between the AC and DC subsystems realized by the AC/DC converter. Based on the IEEE 123-node test feeder,a typical active distribution system case is finally designed and used to test and validate the effectiveness of the proposed method.