Fixed line loss monitoring analysis system

Abstract

The invention discloses a fixed line loss monitoring analysis system, comprising an intelligent line loss analysis host module which is set at a side of a distribution transformer, and intelligent measurement circuit breaker modules which is set on each branch circuit of a court. Each intelligent measurement circuit breaker module controls a switch of each branch circuit, monitors measurement dataof each household meter in a user measurement meter case on each branch circuit in real time, obtains and identifies topology identification signals of branch levels in the court, and sends the measurement data and the topology identification signals to the intelligent line loss analysis host module. The intelligent line loss analysis host module compares total meter data of the court and the measurement data monitored by each intelligent measurement circuit breaker module according to the topology identification signals based on levels, and obtains and outputs a line loss analysis result. The system has the advantages that a structure is simple, cost is low, real-time fine analysis of court line losses can be realized, and the system is stable and reliable.

Description

technical field [0001] The invention relates to the technical field of low-voltage distribution networks, in particular to a fixed line loss monitoring and analysis system. Background technique [0002] The line loss of the low-voltage distribution transformer area is the power loss and loss generated from the output of the distribution transformer to the user's electric energy meter during the power supply process. The line loss can reflect the balance between supply and sales of the distribution network, resulting in a Line loss mainly has the following reasons: [0003] 1. Statistical management: If the basic data of the station area is not perfect, the line loss assessment lacks authenticity, including the CCS system does not match the site, public change files are not entered into the CCS system, there are households without meters, and meters are relocated at will. And the GIS system does not match the site, and the GIS system data is not updated in time according to ...

AI Technical Summary

Problems solved by technology

[0003] 1. Statistical management: If the basic data of the station area is not perfect, the line loss assessment lacks authenticity, including the CCS system does not match the site, public change files are not entered into the CCS system, there are households without meters, and meters are relocated at will. And the GIS system does not match the site, and the GIS system data cannot be updated in time according to the site changes, resulting in various situations such as the inconsistency between the CCS and the GIS system

[0004] 2. Incorrect household relationship: For example, the phenomenon of private connection and random connection left over from the history of the old station area leads to the complexity of the power supply environment and the untimely handover of the newly added public transformer. Electricity is used, but the system has not yet entered user information for meter reading, resulting in different periods of billing electricity in the total score meter, resulting in an abnormal line loss rate in the station area

However, this type of method can only roughly determine the line loss of the entire station area, and cannot determine the specific location of the line loss. However, due to the large number of users in the station area and the complexity of the lines in the low-voltage station area, the above-mentioned statistical management, account change relationship errors, and measurement The existence of problems such as device failure and user electricity theft will affect the effectiveness of line loss assessment in the station area. At the same time, once abnormal line loss is found in the station area, troubleshooting is very difficult. It is impossible to locate the electricity theft investigation area, and it is basically impossible to quickly identify it by appearance , coupled with the fact that electricity theft is usually scattered, it is more difficult to troubleshoot the fault point

[0007] For the station areas where abnormal line loss occurs repeatedly and people are suspected of serious irregularities in power consumption, long-term line loss monitoring is required. To achieve long-term effective line loss monitoring, one solution is to install fixed The installation of multiple dedicated line loss monitoring equipment combined with manual point-by-point inspection is complex and costly, and requires a large number of installations of various auxiliary equipment. There are a large number of switches, branch boxes and other equipment installed on the system. Many switches and other equipment are arranged at the same time as a large number of auxiliary line loss monitoring equipment, which makes the structure and wiring of the whole system more complicated, especially for many branch lines and complex topology. The platform area requires a higher implementation cost

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