An Improved Continuation Power Flow Method with Parameterization Technique
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摘要: 在电力系统静态电压稳定性分析中, 临界电压和极限功率反映了当前系统的负荷增长情况和电压水平, 提出了一种新的参数化连续潮流法绘制P\|U曲线, 从而追踪出系统的临界电压和极限功率。该方法采用非线性预测, 几何相似原理的参数化, 解决了常规潮流方程在极限功率处雅可比矩阵奇异的问题。此方法简单、易懂, 并具有较好的收敛性, 采用自动变步长提高了程序的效率。该方法应用于IEEE39节点和IEEE118节点测试系统, 成功追踪出了系统的临界电压和极限功率, 从而表明了该方法的正确性和有效性。Abstract: The critical voltage and limit power reflect the growth of the load in the current system and current voltage level for the power system voltage stability analysis. A new continuation power flow method with parameterization technique is proposed to draw P\|U curve, and to track the critical voltage and limit power of the system. By nonlinear predictor and parameterization based on geometric similarity theory, the singularity of Jacobi matrix at limit power for conventional power flow equations is overcome. This method is simple, easy to understand, and has good convergence. The efficiency of the program is improved by the method of automatic change\|step. The critical voltage and limit power of the system are tracked successfully by the proposed method with the examples of IEEE39\|bus and IEEE118\|bus test systems, which show the correctness and validity.
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Keywords:
- continuation power flow /
- P\ /
- U curve /
- nonlinear predictor /
- parameterization /
- critical voltage /
- power flow calculation
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辛耀中. 2006年国际大电网会议系列报道(二)电力系统运行与控制技术新进展[J]. 电力系统自动化, 2006, 30(22):16. Ajjarapu V, Christy C. The continuation power flow:a tool for steady state voltage stability analysis[J]. IEEE Trans. on Power Systems, 1992, 7(1):416423. Canizares C A, Alvarado F L. Point of collapse and continuation methods for large ac/dc systems[J]. IEEE Trans. on Power Systems, 1993, 8(1):18. Chiang H D, Flueck A J, Shah K.S, Balu N. CPFLOW. A practical tool for tracing power system steady\|state stationary behavior due to load and generation variations[J]. IEEE Trans. on Power Systems, 1995, 10(2):623634. Iba K, Suzuki H, Egawa M, et al. Calculation of critical loading condition with nose curve using homotopy continuation method[J]. IEEE Trans. on Power Systems, 1991, 6(2):585593. Alves D A, Silva L C P da, Castro C A, et al. New parameterization schemes for the continuation load flow method//Electric Utility Deregulation and Restructuring and Power Technologies 2000, City University, London, 47 April 2000. Dilson A Alves, Luiz C P, da Silva, et al. Continuation fast decoupled power flow with secant predictor[J]. IEEE Trans. on Power Systems, 2003, 18(3):10781085. 王成山, 李国庆, 余贻鑫等. 电力系统区域间功率交换能力的研究(一)——连续型方法的基本理论及应用[J]. 电力系统自动化, 1999, 23(3):2326. 周双喜, 朱凌志, 郭锡玖等. 电力系统电压稳定性及其控制[M]. 北京:中国电力出版社, 2004.
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