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Prediction Model of Voltage Overlimit Based on Principal Component Analysis and Multiple Regression Algorithm

A technique of principal component analysis and voltage over-limit, applied to electrical components, circuit devices, AC network circuits, etc., can solve problems such as unreasonable voltage prediction and achieve the effect of improving operating efficiency

Active Publication Date: 2021-07-20
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO +1
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Problems solved by technology

Therefore, it is obviously unreasonable to predict the voltage over-limit situation if only all the factors that may cause the voltage over-limit problem are analyzed in equal proportions.

Method used

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  • Prediction Model of Voltage Overlimit Based on Principal Component Analysis and Multiple Regression Algorithm
  • Prediction Model of Voltage Overlimit Based on Principal Component Analysis and Multiple Regression Algorithm
  • Prediction Model of Voltage Overlimit Based on Principal Component Analysis and Multiple Regression Algorithm

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Embodiment Construction

[0025] Principal component analysis, also known as principal component analysis, aims to use the idea of ​​dimensionality reduction to convert multiple indicators into a few principal components, where each principal component can reflect most of the information of the original variable, and the information contained in it is interactive. Not repeating. This method reduces complex factors into several principal components while introducing multiple variables, which simplifies the problem and obtains more scientific and effective data information. In the predictive analysis of voltage overshoot, each variable reflects some information about the voltage overshoot to varying degrees, and there is a certain correlation between the variables. If principal component analysis is not performed first, the obtained statistical data will reflect The information overlaps to some extent.

[0026] The multiple regression method is a regression analysis method to study the relationship betw...

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Abstract

The invention discloses a voltage over-limit prediction model based on principal component analysis and multiple regression algorithm. Firstly, the principal component analysis method is used to determine the main influencing factors of voltage over-limit prediction, and the multiple regression method is further used to establish a voltage over-limit prediction model. It is possible to obtain more scientific and accurate predictions of distribution network voltage over-limits, which is conducive to comprehensively inspecting the operation of distribution networks in different regions, and is conducive to discovering areas with voltage over-limit risks and early warning solve the problem and improve the efficiency of power grid operation.

Description

technical field [0001] The invention relates to the technical field of electric power analysis, in particular to prediction of voltage exceeding a limit. Background technique [0002] Voltage is one of the important indicators of power quality. It comprehensively reflects the level of planning, design, operation, maintenance and management of the power system, and is an important economic and technical indicator of power grid operation. With the rapid expansion of the scale of the power grid and the continuous operation of new energy power generation equipment, the power supply level of the power grid has been greatly improved, but the rapid increase in the total power load has made it difficult for the distribution network equipment in some areas to meet the work needs. The problem of voltage fluctuation at the end of the line is serious, and the problem of voltage exceeding the limit occurs from time to time. [0003] Due to the variability of terminal distribution networ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 蒋正威朱炳铨张亮张锋明杨才明章立宗余杰张心心沈祥金学奇吴凌燕李康毅章琦孙滢涛孔锦标张旭阳柴铁洪许丽萍陈水标陈培东李孝蕾任明辉周进叶淑英
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO
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