A low-voltage early warning method for distribution network based on load-voltage sensitivity

A voltage-sensitivity, low-voltage technology, applied in the field of distribution network, can solve the problem of low power grid area, achieve the effect of verifying timeliness and meeting the needs of residents' living electricity

Active Publication Date: 2022-06-21
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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Problems solved by technology

[0004] In order to solve the problem of low-voltage early warning in the grid area, the present invention provides a low-voltage early warning method for distribution network based on load-voltage sensitivity. The specific technical scheme is as follows:

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  • A low-voltage early warning method for distribution network based on load-voltage sensitivity
  • A low-voltage early warning method for distribution network based on load-voltage sensitivity
  • A low-voltage early warning method for distribution network based on load-voltage sensitivity

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Embodiment Construction

[0026] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0027] like figure 1 As shown, a low-voltage early warning method for distribution network based on load-voltage sensitivity includes the following steps:

[0028] S1: Collect user voltage data and power load data in the station area, and perform data cleaning on the collected raw data;

[0029] Data cleaning is specifically:

[0030] S11: Use the Grubbs method to identify and eliminate erroneous data;

[0031] S12: Use Lagrangian interpolation to supplement missing data.

[0032] The specific steps of using the Grubbs method to identify and eliminate erroneous data are as follows:

[0033] S111: arrange the original data;

[0034] S112: Find the mean and standard deviation of the original data;

[0035] S113: Calculate the Gi value: the residual / standard deviation of each data from the...

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Abstract

The invention relates to the technical field of distribution networks, in particular to a low-voltage early warning method for distribution networks based on load-voltage sensitivity. The invention can realize the parallel collection of voltage and load data of each user in the distribution station area, and process the collected data in real time, determine the current load-voltage sensitivity of the distribution area, and predict each user according to the change of the load in the current station area Whether low voltage occurs and the specific time when low voltage occurs, and early warning is given to users and general areas where low voltage occurs. Adoption of the invention can meet the needs of residents' living electricity, and can also verify the timeliness of the low-voltage reconstruction project.

Description

technical field [0001] The invention relates to the technical field of distribution networks, in particular to a low-voltage early warning method for distribution networks based on load-voltage sensitivity. Background technique [0002] In recent years, with the rapid development of the economy, the demand for electricity has increased sharply, and at the same time, the grid structure of the distribution network is relatively lagging, resulting in an endless stream of low-voltage problems. The voltage value is lower than the lower voltage limit specified by the national standard, referred to as "low voltage". Low voltage will harm the operation of electrical equipment and power system and will increase the loss of the power grid and increase the cost of power supply. [0003] The main reason for the low voltage problem in the distribution network is the rapid growth of the load and the relatively weak grid structure of the distribution network. The voltage loss ΔU of the l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/14G01R31/08G01R19/165
CPCH02J3/14G01R31/086G01R19/16547Y04S20/222Y02B70/3225
Inventor 金庆忍谢雄威周柯奉斌郭敏陈卫东刘路周杨珺姚知洋丘晓茵丘浩楚红波
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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