Electric power load online modeling method based on interacting multi-model algorithm
An interactive multi-model and power load technology, applied in computing, instrumentation, data processing applications, etc., can solve problems such as single model structure and weak model timeliness
Inactive Publication Date: 2016-01-20
SOUTH CHINA UNIV OF TECH
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[0005] The purpose of the present invention is to address the problems existing in the above-mentioned prior art, and propose an online modeling method of electric load based on an interactive multi-model algorithm, and devote itself to solving the problems of single model structure and weak timeliness of the current electric load , to provide an effective method for online modeling of electric load
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[0090] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings and embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them.
[0091] The traditional CV, CA and Singer models in maneuvering target tracking track the trajectory of the target, that is, the relationship between position and time. The model is a model for describing a uniformly accelerated motion trajectory applied in a non-maneuvering situation, and the Singer model is a model for describing a trajectory that does not belong to a uniform velocity motion and a uniformly accelerated motion and is applied in a maneuvering situation. Considering that power load modeling needs to establish the relationship between power and voltage, and in the dynamic process, it is inaccurate to simply use the voltage value at a certain moment to describe the impact on power c...
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The invention discloses an electric power load online modeling method based on an interacting multi-model algorithm, which comprises the steps of introducing voltage variation and power, and establishing different electric power load sub-models describing a relation between the voltage variation and the power, such as a CV model, a CA model and a Singer model, thereby comprehensively covering a variation space of electric power load characteristics; calculating a posterior probability of each electric power load sub-model at every moment by applying the interacting multi-model algorithm, and then converting the sub-models into a standard electric power load model according to the probabilities. The electric power load online modeling method disclosed by the invention solves timeliness and the accuracy against which traditional electric power load modeling faces; variation conditions of the electric power load characteristics are tracked in real time, the precision of electric power simulation analysis is improved, and the self-healing capacity of a power grid in emergency conditions that disturbance occurs in voltage or frequency and the like is ensured.
Description
technical field [0001] The invention relates to the field of electric load modeling, in particular to an online electric load modeling method based on an interactive multi-model algorithm. Background technique [0002] The current electric load model structure mainly includes ZIP model, power function model, motor parallel ZIP (or pure impedance) model, ordinary differential model, transfer function model, state space model, neural network model, support vector machine model, etc. The current power load modeling mainly adopts discrete modeling. [0003] As far as the model structure is concerned, the existing model structures have their own characteristics and play an important role in the development of electric load modeling, but they all belong to a single model structure in essence. Due to the fact that there are many components in the integrated power load node under the new situation, their sensitivity to the influence of voltage is different, and the regulation mode ...
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Inventor 朱建全易江文李燕珊刘明波
Owner SOUTH CHINA UNIV OF TECH