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Distribution transformer tap position identification algorithm

A technology of distribution transformer and identification algorithm, applied in the field of power distribution

Active Publication Date: 2018-10-19
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the operation and maintenance personnel in the station area do not need to check the gear position of the distribution transformer without a power outage. This invention proposes a gear recognition algorithm for the distribution transformer

Method used

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  • Distribution transformer tap position identification algorithm
  • Distribution transformer tap position identification algorithm
  • Distribution transformer tap position identification algorithm

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Embodiment Construction

[0054] The specific embodiment of the present invention is as figure 1 shown.

[0055] In this embodiment, a distribution transformer stall recognition algorithm is as follows:

[0056] 1. Establish distribution transformer topological relationship:

[0057] The establishment of the distribution transformer topology relationship mainly solves the parent-child relationship of distribution transformers. The distribution network is usually designed in a closed loop and operated in an open loop. A short-term ring network will appear when the load is reversed or a fault occurs. The distribution transformer group structure and tree of this operation mode The structure is similar. In order to find the adjacent distribution transformer of the distribution transformer whose gear position is to be determined, that is, the distribution transformer of the parent node, it can be considered to use the three-pronged list as the chained storage structure of the distribution transformer group...

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Abstract

A distribution transformer tap position identification algorithm utilizes the topological relationship of the distribution transformer connected with the same 10kV line to determine the precursor-successor relationship between adjacent distribution transformers. The voltage difference between adjacent distribution transformers at different tap positions is analyzed, and the voltage drop produced by line impedance is regarded as noise, so the voltage difference between adjacent distribution transformers is different if the voltage between adjacent stations is not in the same tap position, and then the tap position relationship of adjacent distribution transformers can be determined. The voltage tap positions of all stations are analyzed by comparing the voltages of two stations adjacent toeach other. The algorithm of the invention does not require the operation and maintenance personnel in the platform area to check the actual tap position of the distribution transformer, but utilizesthe existing operation data of the distribution transformer to realize on-line calculation of the tap posiiton of the distribution transformer and provide the reliability of the power supply in the platform area. The algorithm of the invention can accurately determine the actual tap position of the distribution transformer, and is suitable for large-scale application and popularization.

Description

technical field [0001] The invention relates to an algorithm for recognizing gear positions of a distribution transformer, which belongs to the technical field of power distribution and utilization. Background technique [0002] The qualified rate of voltage in the station area is one of the main standards for measuring power quality. According to the relevant regulations of the "Technical Guidelines for Distribution Networks", the voltage deviation of 220V single-phase power supply is +7% and -10% of the nominal voltage. With the increase of rural-related industrial industries and the mechanization of secondary industries, rural loads generally have the characteristics of obvious seasonality, strong periodicality, and large fluctuations. Distribution transformers usually have high light-load voltages, and summer and winter, spring irrigation and autumn harvests, Seasonal load surges during holidays, roasting tea and tobacco production also cause low voltage. Often, low volt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/12G06N3/12G06Q50/06
CPCG06F17/12G06N3/126G06Q50/06
Inventor 安义范瑞祥李升健陈霖郭亮邓才波
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST
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