Method for measuring benchmark value of line loss per unit in typical low-voltage court

Abstract

The invention, which belongs to the measurement field, provides a method for measuring the benchmark value of the line loss per unit in a typical low-voltage court. Scene classification is carried outon a low-voltage court based on transformer type, transformer capacity, and power consumption property information, and a classification plan under the typical scene architecture is put forward; forvarious typical scene architectures, formation of corresponding regional line loss per unit is analyzed; on the basis of the all electricity-consumption-property typical court architecture, a low-voltage court typical structure under the corresponding typical scene is formed according to factors like the average per-household operation capacity and the typical line power supply capability, and a benchmark value of the line loss per unit is calculated based on the typical structure; and thus when estimation is carried out in the reasonable range of the line loss per unit in the low-voltage court, a reasonable range of the line loss per unit in the court based on the reasonable range analysis of the influence factor is obtained. The method can be applied to the power supply operation and line loss management fields in various low-voltage courts.

Description

Technical field [0001] The invention belongs to the field of measurement, and in particular relates to a method for measuring line loss rate in a low-voltage station area. Background technique [0002] The Shanghai Electric Power Company has been carrying out line loss refinement work for many years. At present, various power supply companies have put into operation the "distribution network integrated line loss management system", which can realize line loss calculation and comparison on a line-by-line and station-by-zone basis. This work provides a basis for grasping the line loss distribution, but the following problems have been found in practice: [0003] (1) Due to problems such as incorrect wiring of the gateway meter and mismatch in changing households, the measured line loss rate of the low-voltage station area often has abnormal values ​​(negative values, abnormally high values), which makes the measured line loss rate lose the analysis line loss and guide the loss reduct...

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Problems solved by technology

[0006] (4) At present, manual methods are used to check the abnormal line loss rate, and the efficiency is very low. It is urgent to use scientific criteria and judgment processes, and develop corresponding computer-aided analysis modules to realize automatic checking, correction and troubleshooting of abnormal line loss rates. Auxiliary analysis of regional loss reduction methods and loss reduction potential to improve the efficiency of line loss management

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