含功率扰动电力系统混沌振荡的动态滑模控制

doi:10.11959/j.issn.1000-436x.2019005

Abstract

Abstract:

With the rapid development of the power industry,the possibility of chaotic oscillation increases in the power system,and the importance of maintaining the stability of the power system is prominent.Through a fourth-order power system model with power perturbation term built,the Lyapunov exponent spectrum,bifurcation diagram and spectral entropy were analyzed,respectively.The influence of power disturbance terms on power system motion was discussed in detail.Moreover,a dynamic surface sliding mode controller was designed based on the switching function with relay characteristics.Simulation results show that the controller can suppress the chaotic oscillation quickly and smoothly,and effectively avoid chattering and own strong robustness.

Key words: power disturbance, bifurcation diagram, chaotic oscillation, dynamic surface sliding mode control

CLC Number:

TM712

Fuhong MIN,Hanyuan MA,Yaoda WANG. Surface sliding mode controller for chaotic oscillation in power system with power disturbance[J]. Journal on Communications, 2019, 40(1): 119-129.

Figures/Tables 17

References 22

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参数名称	数值
同步电机基频（f₀）	60
传输线路电抗（x）	0.5
发电机态电抗（x_d）	1
励磁限制器电压参考值（E_fd0）	2
等值转动惯量（H）	5
发电机暂态电抗（x_d′）	0.4
母线电压参考量（V_ref ）	1.05
励磁限制器电压最小值（E_fdmin）	0
无穷大母线电压（V₀）	1
发电机定子时间常数（T_d0′ ）	10
励磁时间常数（T_A）	1
励磁限制器电压最大值（E_{fd max}）	5
注：表中各参数均取标幺值。

P_e	LE	系统运行状态
0.123 7	(0,0,-0.064 6,-0.272 3,-1.036 4)	拟周期
0.225 0	0.0762 0,-0.021 7,-0.288 2,-0.570	混沌

f₁	LE	系统运行状态
0.420 0	(0,-0.046 9,-0.049 1,-0.233 6,-1.037 1)	周期
0.800 0	(0.083 8,0,-0.032 9,-0.261 2,-1.156 4)	混沌
0.850 0	(0,-0.051 7,-0.131 0,-0.138 9,-1.045 1)	周期
0.900 0	(0.077 3,0,-0.019 6,-0.213 8,-1.210 7)	混沌
1.268 0	(0,-0.026 6,-0.197 2,-0.205 0,-0.938 0)	周期

P_k	LE	运行状态
0.090 3	(0,0,-0.100 3,-0.218 2,-1.073 9)	拟周期
0.170 3	(0,-0.062 8,-0.128 7,-0.222 7,-0.966 0)	周期
0.218 0	(0.216 7,0,-0.124 2,-0.246 1,-1.050 5)	混沌

f₂	LE	运行状态
0.500 0	(0,0,-0.068 6,-0.453 4,-0.847 2)	拟周期
0.750 0	(0,-0.062 0,-0.072 4,-0.106 6,-1.125 7)	周期
0.800 0	(0.063 7,0,-0.027 4,-0.250 5,-1.152 5)	混沌
0.850 0	(0,-0.112 2,-0.114 4,-0.168 6,-0.971 6)	周期
0.900 0	(0.100 4,0,-0.028 1,-0.250 3,-1.188 7)	混沌
1.270 0	(0,-0.130 5,-0.163 6,-0.167 9,-0.904 7)	周期

Surface sliding mode controller for chaotic oscillation in power system with power disturbance

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Figures/Tables 17

References 22

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