双馈风机连锁故障电压穿越参数辨识

doi:10.16180/j.cnki.issn1007-7820.2025.07.012

Abstract

Abstract:

With the grid-connected operation of large-scale Doubly Fed Induction Generator(DFIG), the nonlinear, impact and unbalanced characteristics of the operation process are easy to cause the chain failures of DFIG off-grid operation. In view of the existing DFIG parameter identification studies based on a single voltage sudden change for transient analysis and control strategy formulation, a single voltage sudden change study is difficult to characterize the applicability of control parameter identification. In this study, a parameter identification method of doubly-fed fan rotor controller based on IMOLA(Improved Multi-ObjectiveLichtenberg Algorithm) is proposed. The PSASP platform is used to build the electromechanical transient model of doubly-fed wind turbine, and the main control mode during steady-state operation and chain fault voltage crossing is determined. The measured data of voltage, active power and reactive power are input into the identification model, and the control parameters are identified based on IMOLA algorithm. The effectiveness and practicability of the proposed method are verified by simulation data and measured data. The results show that compared with traditional methods, IMOLA identification method can effectively improve the identification accuracy of model control parameters.

Key words: doubly-fed wind turbines, cascading faults, voltage ride through, electromechanical transient, control strategy, rotor side controller, actual measurement data, parameter identification, improved multi-objective Lichtenberg optimization algorithm

CLC Number:

TM74

YANG Zhi, ZHANG Jing, HE Yu, YE Yongchun, CAO Guoqiang, SUN Qichen, LI Shunyu, WANG Zhiyang. Research on Parameter Identification of Voltage Ride Through in Cascading Faults for Doubly Fed Induction Generator[J].Electronic Science and Technology, 2025, 38(7): 89-96.

Figures/Tables 6

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Figure 3.

Table 1.

Figure 4.

Table 2.

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参数	PSO	GA	LA	IMOLA
K_p₁	0.920 1	0.898 6	0.947 9	0.968 6
K_i₁	95.882 9	97.993 7	96.245 0	98.950 0
K_p₂	0.336 3	0.450 0	0.460 6	0.477 3
K_i₂	8.230 9	8.105 4	7.896 1	7.990 5
K_p₃	1.112 2	1.227 8	1.209 9	1.239 7
K_i₃	299.325 6	289.476 0	296.972 1	297.430 0
K_p₄	0.399 9	0.408 7	0.440 0	0.446 7
K_i₄	8.133 3	8.080 8	7.915 8	7.990 1

优化算法	偏差	U	P	Q	I
PSO	F₁	0.055 7	0.067 80	0.045 9	0.082 2
PSO	F₂	0.254 7	0.172 00	0.190 0	0.205 4
GA	F₁	0.085 4	0.095 70	0.098 7	0.036 3
GA	F₂	0.100 0	0.235 00	0.172 3	0.152 0
LA	F₁	0.056 8	0.033 67	0.234 0	0.066 5
LA	F₂	0.195 6	0.224 50	0.126 8	0.119 8
IMOLA	F₁	0.020 2	0.031 90	0.020 7	0.010 0
IMOLA	F₂	0.091 5	0.114 10	0.102 5	0.082 7

Research on Parameter Identification of Voltage Ride Through in Cascading Faults for Doubly Fed Induction Generator

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