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Phase judgment method based on low-voltage users

A judgment method and a user-friendly technology, applied in the field of low-voltage distribution network, can solve the problems of cumbersome final judgment and lack of data screening process, etc.

Pending Publication Date: 2021-07-06
HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method for identifying user differences in this patent lacks the necessary data screening process, and the final determination of the difference is more cumbersome

Method used

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  • Phase judgment method based on low-voltage users
  • Phase judgment method based on low-voltage users
  • Phase judgment method based on low-voltage users

Examples

Experimental program
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Embodiment 1

[0050] A different judgment method based on low-voltage users, such as figure 1 shown, including:

[0051] A distribution station area is selected, and the load data of the public transformer and users of the distribution station area are simultaneously acquired at a period t within a time T.

[0052] Taking the time T as 1 day and the cycle t as 15 minutes as an example, there are 96 pieces of load data in one day. Obtain the daily electricity consumption of users in the distribution station area, calculate the daily current, take setting 5A as the preset threshold as an example, take the data obtained at the same time point as a data group, and exclude the current contained in the load data Data sets larger than 5A.

[0053] Depend on have to Depend on have to The greater the user current, the greater the voltage difference between the public transformer and the user, and the lower the performance correlation. Therefore, eliminating individual data with extremely l...

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Abstract

The invention discloses a phase judgment method based on low-voltage users. The method comprises the steps: selecting a power distribution area, and simultaneously acquiring load data of a public transformer and a user in the power distribution area at a period T within time [delta]t; setting a current threshold value, taking the data obtained at the same time point as a data group, and rejecting the data group with the current greater than the threshold value in the load data to obtain a first data packet; calculating a theoretical power factor and an actual power factor of the first data packet user; calculating the correlation between the theoretical power factor and the actual power factor, and screening the first data packet according to the correlation to obtain a second data packet; and calculating the credibility Px of the user voltage in the second data packet and the credibility Py of the common transformer voltage in the second data packet, establishing a phase judgment model based on the Px and the Py, and judging the phase of the user. The method has the beneficial effects that 1, data with interference are eliminated through two times of parameter calculation and screening; 2, the final judgment only needs calculation and comparison, and the procedure is simple and convenient; and 3, phases of single-phase users and multi-phase users can be judged.

Description

technical field [0001] The present invention relates to the technical field of low-voltage distribution network, in particular to a low-voltage user-based phase distinction determination method. Background technique [0002] With the upgrading of power grid electricity consumption information collection system and collection equipment, the application of object-oriented data exchange protocol, 5G mobile communication network and other technologies, the collection of user electricity consumption data has become more comprehensive and complete. More methods are provided for household variable relationship identification, line loss investigation, and operation monitoring. Power grid enterprises can provide users with better services only if they have more complete distribution network information. Based on this, they must first grasp the corresponding relationship between users and public transformer phases, that is, user-specific judgments. [0003] For example, the Chinese p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/18G06F17/15
CPCG01R29/18G06F17/15
Inventor 沈煜宾张凤翱费晓明董寒宇陈炜李越玮郑松松薛钦侯加庆沈尚义
Owner HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD