基于降阶雅可比矩阵的低压减载整定方法研究

Study on Low Voltage Load Shedding Setting Method Based on Reduced Order Jacobian Matrix

重点讨论节点电压随负荷功率变化的灵敏度系数在低压减载过程中对节点电压恢复的影响,并通过降阶雅可比矩阵推导出了节点电压与节点负荷功率变化的灵敏度系数的关系。以此为依据选择灵敏度系数高的负荷节点优先进行切负荷,可得到优化的切负荷方案。该方法保证了系统的电压快速恢复和较高的电压稳定裕度,仿真结果验证了其有效性。

The rise of system voltage is associated with each node load power changing in the process of low voltage loadshedding. Therefore, a sensitivity coefficient of the nodepaper,it has an important effect on the node voltagenode voltage with node loadhigher sensitivity coefficientpower changing is deducedis prior removed, which canvoltage along with the node load power changing is discussed inrise, and the relationship among the sensitivity coefficients of theby the reduced-order Jacobin matrix. On this basis, the load ofget optimal load shedding programs. The method ensures fasterrise and higher voltage stability margin of the system voltage, and the simulation results demonstrate the effectiveness ofthe scheme.