CAJ | 학술논문

在传统的Q-V模态分析法基础上，考虑了节点有功微增量变化对模态分析结果的影响，利用修正后的降阶雅可比矩阵特征值对某一运行方式下的系统电压静态稳定性进行判别。并对该系统状态进行薄弱环节分析，且在潮流方程中增加 PV节点的无功微增量，使得运用模态分析法计算节点参与因子时可以得到发电机节点对电压崩溃的参与程度，弥补了使用传统Q-V 模态分析法只能计算 PQ 节点参与因子的不足。结合非序贯的蒙特卡洛模拟法对系统状态进行随机抽样，计算出系统电压崩溃的概率风险。针对IEEE-RTS 79系统算例做了应用研究，验证了将改进后的模态分析技术运用到系统电压崩溃风险薄弱环节分析中的有效性。
재전통적Q-V모태분석법기출상，고필료절점유공미증량변화대모태분석결과적영향，이용수정후적강계아가비구진특정치대모일운행방식하적계통전압정태은정성진행판별。병대해계통상태진행박약배절분석，차재조류방정중증가 PV절점적무공미증량，사득운용모태분석법계산절점삼여인자시가이득도발전궤절점대전압붕궤적삼여정도，미보료사용전통Q-V 모태분석법지능계산 PQ 절점삼여인자적불족。결합비서관적몽특잡락모의법대계통상태진행수궤추양，계산출계통전압붕궤적개솔풍험。침대IEEE-RTS 79계통산례주료응용연구，험증료장개진후적모태분석기술운용도계통전압붕궤풍험박약배절분석중적유효성。
Based on the traditional Q-V modal analysis method and considering the influence that a node’s active micro increment changes to the results of modal analysis, this paper uses the amended reduced order of Jacobian matrix to identify the system static voltage stability, adds PV nodes of reactive power of micro increment in the power flow equations to analyze the weak link in the system state of sampling, gets the involvement of voltage collapse of the generator nodes when modal analysis method is used to calculate node participation factor, which makes up for the deficiency that the traditional Q-V mode only calculates PQ node participation factor. The non-sequential Monte Carlo simulation method is combined to proceed random sampling of the state of the system and calculate the probability of the voltage collapse. IEEE-RTS 79 system is analyzed to prove the availability in the analysis of the weak link of the risk of voltage collapse using improved modal analysis technology.