Method and system for dynamically calculating line loss of 10KV line for layered power-distributing network

Abstract

The invention relates to a method for dynamically calculating the line loss of a 10KV line for a layered power-distributing network, which comprises the following steps of: system initialization: dividing the loss calculation of the 10KV line into a matched-transformer layer, a switching-segment layer and a 10KV-line layer logically; acquiring and reading the matched-transformer electrical quantity or electrical-quantity data of each switching segment by the matched-transformer layer; calculating the electrical quantity of each switching segment by the switching-segment layer; and calculating the switching segments formed into the 10KV line by the 10KV-line layer according to a switching state and a switching-segment dividing and merging method, and detracting the electrical quantity of each switching segment from the electricity consumption of the switching segment of a line outlet to obtain a calculating result as the line-loss value of the 10KV line. The invention also discloses a system for dynamically calculating the 10KV-line loss of the layered power-distributing network. When the switching state of the 10KV line of the power-distributing network is changed, the switching-segment combination of the line layer is changed therewith, and the change of the line can be reflected into the line-loss calculation of the line in time in the next calculating period, so that the influences of the operating-mode and electricity-supplying range change of a power-distributing line on the calculating result are eliminated, and the accuracy of the line-loss calculation of the 10KV line is improved.

Description

technical field [0001] The invention relates to the field of power system line loss calculation, in particular to a dynamic calculation method and system for 10KV line line loss in a layered distribution network. Background technique [0002] Line loss is a major economic indicator of the power system, which not only reflects the rationality of the grid structure and operation mode, but also reflects the technical management level of the power company. Line loss management is an important business of power consumption management, and line loss directly affects the economic benefits of power supply companies. [0003] At present, the line loss calculation and management system of 10kv line generally adopts the method of manual input and editing to modify the distribution transformer powered by 10kv line, and then subtract the output power of the outlet switch of 10kv distribution line Line loss calculation. The operation mode and power supply range of the 10kv distribution ...

AI Technical Summary

Problems solved by technology

The operation mode and power supply range of the 10kv distribution line are determined by the switch state of the 10kv line. The current line loss calculation method cannot automatically calculate the distribution transformer supplied by the line according to the switch state, so it is impossible to fully realize the line loss calculation of the distribution network. Automatic statistics and calculations reduce the timeliness and accuracy of line loss data and affect the application effect of the system

Images