CAJ | 학술논문

文章针对PQ分解法在导线截面较小（r>x）的低压配电网络应用时存在不收敛的问题，根据B.Stott模型在PQ分解法的基础上提出采用由程序自动进行支路截断的改进PQ支路截断法，解决了r/x比值较高的电缆网络及更高的某些三绕组变压器网络的收敛性问题。并分别利用PQ法和改进的PQ支路截断法对7节点及11节点电力网络进行了仿真分析，实验结果验证了本方法的正确性和可行性，并且减少了迭代次数，加快了潮流计算的迭代速度，更有利于实时准确监测电网参数。
문장침대PQ분해법재도선절면교소（r>x）적저압배전망락응용시존재불수렴적문제，근거B.Stott모형재PQ분해법적기출상제출채용유정서자동진행지로절단적개진PQ지로절단법，해결료r/x비치교고적전람망락급경고적모사삼요조변압기망락적수렴성문제。병분별이용PQ법화개진적PQ지로절단법대7절점급11절점전력망락진행료방진분석，실험결과험증료본방법적정학성화가행성，병차감소료질대차수，가쾌료조류계산적질대속도，경유리우실시준학감측전망삼수。
An improved PQ branch decomposition method-the program automatically decomposes tributary was proposed in the paper. It aimed to offset the deficiency of PQ method in low voltage distribution network with small cross-sectional area of conductor. Also B. Stott model was quoted to prove the applicability of the method in cable and some three-winding transformer network of large r/x value. Emulations between PQ and PQ branch decomposition in seven and eleven node network in order to test and verify the PQ branch decomposition method. According to the simulation results the later method was accurate and feasible also reducing iterations, accelerating the rate of flow calculation, measuring power network faster compared to PQ method.