Data monitoring method and system for box-type substation

Abstract

The invention belongs to the technical field of power equipment monitoring systems, and particularly relates to a data monitoring method and system for a box-type substation, and the system comprises an acquisition module, a data processing module and a monitoring platform. The acquisition module is used for acquiring comprehensive parameters of a power transformer in the box-type substation; the data processing module analyzes the comprehensive parameters acquired by the acquisition module to obtain abnormal parameters of the power transformer, generates a data packet and sends the data packet to the monitoring platform; and the monitoring platform carries out data analysis on the received data packet, carries out matching with a fault diagnosis application case, generates a matching result, and carries out remote control on the power transformer and sends out an early warning signal according to the matching result and a corresponding preset instruction. According to the method, the comprehensive parameters of the power transformer in the box-type substation are collected, and the practical fault diagnosis application case is combined, so that early warning is carried out on the parameters of the box-type substation.

Description

technical field [0001] The invention belongs to the technical field of power equipment monitoring systems, and in particular relates to a data monitoring method and system for a box-type substation. Background technique [0002] Box-type substation, also known as outdoor complete substation, is also called combined substation. It is a new type of outdoor complete substation developed in the 1960s and 1970s in western developed countries such as Europe and the United States. Flexible, easy to transport, relocate, easy to install, short construction period, low operating cost, non-polluting and maintenance-free, it is valued by electric power workers all over the world. In China, box-type substations have been more and more widely used in urban construction because of the advantages of less land occupation, shorter construction period and lower cost than traditional civil substations, and have become an important terminal equipment in urban power systems. . The box-type subs...

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Problems solved by technology

The box-type substation also has problems such as tight internal structure, unattended operation, and changes in the operating environment in the station. If the power system in the box-type substation cannot be monitored effectively in real time, once a failure occurs, it will cause huge economic and social losses.

[0003] In the existing technology, Yang Zhi of Tianjin University designed and developed an online monitoring system for box-type substations in 2013, using voltage transformers, current transformers and self-built frequency sampling circuits to realize online monitoring of grid voltage, current, frequency, and temperature. sampling, and realize digital-to-analog conversion through high-speed AD, and realize sampling control and parameter analysis by combining CPLD, APM, and DSP. There is still a certain distance to the application; Li Xianglin of Nanjing University of Posts and Telecommunications proposed and designed an embedded power quality detection system in 2012, using the ARM processor to control and collect the electrical characteristics of the power grid, and analyzed the power quality information. The sensor network has realized remote data transmission, combined with practical application verification, and has strong applicability, but the system does not provide tests and corresponding diagnoses for other parameters affecting power grid equipment; in addition, North China Electric Power University studied in 2013 The key technology of intelligent monitoring of distribution transformers is given, and the system design scheme and verification results are given. The system uses voltage transformers and current transformers to conduct original sampling of electric energy information, and uses PT100 as an oil temperature monitoring sensor to combine electric energy information and temperature Information fusion is transmitted to the data center server through GPRS wireless technology. The system realizes the comprehensive analysis of electricity and non-electricity, which has strong practicability and applicability. However, the system analyzes the non-electricity parameters of substations relatively uniformly. The data are insufficient to reflect the full characteristics of the transformer operation

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