Direct current system digital modeling method based on gradient descent machine algorithm

Abstract

The invention relates to the technical field of power transmission and transformation projects, and discloses a gradient descent machine algorithm-based direct current system digital modeling method, which comprises the following steps of S1, machine algorithm analysis; through prediction and analysis of the data, especially analysis of unknown new data, accurate statistical prediction and solution of the data are achieved. S1.1, carrying out a gradient descent algorithm on the existing data; firstly, a coefficient vector is initialized, then a coefficient vector value is iterated and updated step by step, and minimization of an objective function is carried out until convergence; the gradient descent method is an iterative algorithm, an appropriate initial value x (0) is selected, iteration is continuously carried out, the value of x is updated, an objective function is minimized until convergence is achieved, the value of x is updated in the negative gradient direction in each step of iteration due to the fact that the negative gradient direction is the direction which enables the function value to descend fastest, and therefore the purpose of reducing the function value is achieved.

Description

Technical field [0001] The invention relates to the technical field of power transmission and transformation engineering, specifically a DC system digital modeling method based on gradient descent machine algorithm. Background technique [0002] At the moment when the State Grid is advocating the construction of a new power system with new energy as the main body, it is even more essential to use digital and intelligent means to ensure the safe and stable operation of the power system. At present, the digital simulation and modeling technology of the DC system still does not reach a certain research depth, and there is no research on the digital modeling technology for DC miniature circuit breaker range and cable calculation. The main research is still the main equipment selection and system simulation and battery modeling. With the continuous promotion and development of digital technology and computer algorithm technology in engineering construction, the original traditio...

AI Technical Summary

Problems solved by technology

With the continuous promotion and development of digital technology and computer machine algorithm technology in engineering construction applications, the original traditional DC system feeder extreme difference with simple calculation and application can no longer meet the current requirements, and the complex circuit after a high proportion of new energy access is very complex. The linear situation will also have a huge impact on the DC system, and it is urgent to develop towards intelligence and digitalization

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