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Acquisition method of model parameters of electromechanical transient state simulation of motor based on factory data

A technology of model parameters and transient simulation, applied in the direction of electrical digital data processing, special data processing applications, aerodynamic improvement, etc., can solve the limitations of adaptability and accuracy, which have not been well resolved, and the method of determining model parameters Applicability limitations and other issues, to achieve the effect of good convergence characteristics and strong robustness

Active Publication Date: 2010-06-09
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

The typical model parameters of the induction motor recommended by the IEEE have a history of more than 20 years, and the adaptability and accuracy of applying these typical model parameters to the simulation analysis of the current power grid will be limited
[0005] The motor simulation model parameters determined based on experimental data have the strongest adaptability, but due to the large number and types of motor loads in the power system, the applicability of the model parameter determination method based on actual measurement is limited
[0006] Therefore, according to the factory data of the motor, such as rated power, rated power factor, maximum electromagnetic torque, starting torque, starting current, rotor speed, etc., how to estimate the parameters of the motor model suitable for power system simulation programs has been in the research state. This problem has not been well resolved so far

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  • Acquisition method of model parameters of electromechanical transient state simulation of motor based on factory data
  • Acquisition method of model parameters of electromechanical transient state simulation of motor based on factory data
  • Acquisition method of model parameters of electromechanical transient state simulation of motor based on factory data

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Embodiment Construction

[0067] To use the induction motor model in the power system numerical simulation analysis, the specific parameters of the motor stator and rotor must be known. Usually these parameters can only be obtained through test data. However, there are many large and small motor loads in the system, and it will take a lot of work to test one by one.

[0068] Therefore, estimating the model parameters of the motor according to the factory data in the motor product catalog has important engineering practical value. The factory data of the motor includes the motor model, rated power P n (kW), rated voltage U n (V), rated current I n (A), rated speed n n (r / min), rated efficiency η n (%), rated power factor cosθ n , Maximum torque multiple κ m (κ m =T m / T n ,T n is the rated torque, T m is the maximum or critical torque), stall or starting torque multiple κ st (κ st =T st / T n ,T st is starting or torque), stall or starting current multiple κi st (κi st = I st / I n , I...

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Abstract

The invention relates to an acquisition method of model parameters of the electromechanical transient state simulation of a motor based on factory data, which estimates the motor single-cage model parameters suitable for the electromechanical transient state simulation of an electrical power system on the basis of the factory data (such as rated power, rated power factor, maximum torque multiple, rotor rotation speed, and the like) of an induction motor. The algorithm sufficiently considers the torque-slip physical principle characteristics of the motor, has good convergence and high robustness and provides convenience for the selection of the motor model parameters adopted in the simulation of the electrical power system.

Description

technical field [0001] The invention belongs to the field of electric power systems and provides a method for calculating parameters of a motor simulation model based on motor appearance data. Background technique [0002] The model parameters used in power system simulation are an important determinant of simulation accuracy. Compared with more mature generator sets and transmission network models, the load model is still relatively simple. With the increase of the complexity of domestic and foreign power grids and the expansion of the scale of the power grid, the problems of dynamic stability and voltage stability of the power grid are more prominent, and the influence of the load model on the simulation calculation results of the system cannot be ignored. [0003] Among the power system loads, the motor load has a great influence on the system stability characteristics. The two power outages at WSCC in the United States on August 10, 1996 and August 4, 2000 prompted WECC...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCY02T10/82
Inventor 汤涌赵兵张文朝王琦邱丽萍
Owner CHINA ELECTRIC POWER RES INST
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