A Parameter Identification Method for the Excitation System of a Hydrogenerator Set
A technology for hydroelectric generators and excitation systems, applied to general control systems, control/regulation systems, instruments, etc., can solve problems such as falling into local optimal values and being unable to search for global optimal values
Active Publication Date: 2016-08-31
HUAZHONG UNIV OF SCI & TECH
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However, PSO and GSA still have shortcomings in the process of searching for the optimal solution, and they are easy to fall into the local optimal value, resulting in the failure to search for the global optimal value.
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[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0042] In order to illustrate the effect of the present invention, the method of the present invention is further described as the implementation object of the present invention with the excitation system of a certain hydroelectric generator set below:
[0043] Step (1): Establish a simulation model of the excitation system of the hydro-generator set, and determine the parameters to be identifie...
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The present invention discloses a hydraulic generator set excitation system parameter identification method for accurately obtaining a hydraulic generator set excitation system parameter. According to a hydraulic generator set excitation system, a simulation model is established, then according to the simulation system, a target function with the weighted error squared sum of an actual system output and an identification system output as parameter identification is established, and the preferred method designed by the present invention is used to solve the target function to obtain an optimal control parameter. According to the hydraulic generator set excitation system parameter identification method designed by the invention, a novel heuristic optimization algorithm is used to optimize the target function, a small target function value can be searched, an accurate identification parameter can be obtained, and the identification system output and the actual system output are in good agreement according to the accurate identification parameter.
Description
technical field [0001] The invention belongs to the technical field of power system parameter optimization, and more specifically relates to a method for identifying parameters of an excitation system of a hydroelectric generating set. Background technique [0002] In the normal operation or accident state of the power system, the excitation system of the hydro-generator plays an important role. It has the ability to control voltage, control the distribution of reactive power, improve the stability of parallel operation of hydroelectric generators, and improve the stability of the power system. However, in the past, the power sector often used typical parameters, which were difficult to truly reflect the dynamic characteristics of the power system. The accuracy of the model and parameters of the excitation system of the hydroelectric generator set in the power system is directly related to the safe and stable operation level of the system. Therefore, it is a very important...
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IPC IPC(8): G05B17/02
CPCG05B17/02
Inventor 李超顺张楠王文潇魏巍杨兴昭李如海
Owner HUAZHONG UNIV OF SCI & TECH