# Power Electrical Study

Only available on StudyMode
• Topic: Gauss–Seidel method, UCI race classifications, Tour de Georgia
• Pages : 11 (1418 words )
• Published : May 6, 2013

Text Preview
[pic]

|本人签名： | |日期： | |

|本人签名： | |日期： | | |导师签名： | |日期： | | 基于节点阻抗矩阵的电网潮流算法仿真

Based on the Impedance Matrix of the Power Grid Node Flow Algorithm Simulation

Abstract

Power system load flow calculation of power system steady state is a basic and important electrical calculation, power system analysis and control discipline basis. Problems concerning power system load flow calculation are a group of nonlinear equations to solve the problem, the method without iteration. So for power flow calculation, the premise is required to reliably converges, and gives the correct result. For power flow calculation algorithm has many kinds, but most are based on admittance matrix calculation. The node admittance matrix based on the Gauss principle of Seidel iteration method is relatively simple, requiring digital computing memory amount is relatively small but poor convergence. Node impedance matrix based substitution method has good convergence, but the large amount of computation, slow operation speed. This algorithm is a combination of the above two methods the advantage of the designed algorithm. This article through analyzes the Chaohu Zhao Guan in eight substation power grid structure, establishment of algorithm parameter model. To validate this based on nodal impedance matrix Gauss - Seidel iterative method has good convergence, simple operation characteristics. Key words: power flow calculation, electric power network, the node impedance matrix

1 电力系统潮流概论1
1.1 电网潮流计算的定义及应用1
1.2 潮流计算的发展情况和前景2
2 电力网络的数学模型4
2.1 节点导纳矩阵的形成及修改4
2.1.1 节点导纳矩阵的形成4
2.1.2 导纳矩阵的修改4
2.2 节点阻抗矩阵的模型6
2.2.1节点阻抗矩阵的物理意义6
2.2.2用节点导纳矩阵求节点阻抗矩阵7
3 高斯-赛德尔法潮流计算8
3.1高斯-赛德尔法的介绍8
3.2 高斯—赛德尔法计算潮流分布8
3.3 基于导纳矩阵的直角坐标高斯—赛德尔法潮流计算11 4 计算示例14
4.1 算例14
4.2 程序设计16
4.2.1 程序流程图16
4.2.2 程序设计思路20

1 电力系统潮流概论

1.1 电网潮流计算的定义及应用