System and method for collecting switch cabinet electrical data by intelligent transformer terminal

Abstract

Disclosed is a system for collecting switch cabinet electrical data by an intelligent transformer terminal. The system comprises the intelligent transformer terminal and more than one group of switch cabinet multifunctional meters; the intelligent transformer terminal is in communication with each switch cabinet multifunctional meter; the intelligent transformer terminal is in mutual connection with a background data center communication network; the background data center is in interactive communication with a user through a GPRS technology or the Ethernet; and each switch cabinet multifunctional meter is protocol with a Modbus. The system has the following beneficial effects: 1, interaction between the switch cabinet multifunctional meters and the background data center is realized through the intelligent transformer terminal, so that the conventional method of adopting a special communication management machine for realizing information summation of the multiple switch cabinet multifunctional meters at present is avoided; 2, the requirement on the calculation and processing capability of the intelligent transformer terminal is lowered; and 3, information fusion of the transformer and the switch cabinet equipment is realized, and data transmission and data receiving are performed by the intelligent transformer terminal in a unified manner, so that operation of two sets of monitoring software on the background data center can be avoided.

Description

technical field [0001] The invention relates to the field of intellectualization of electrical equipment, in particular to a system and a method for collecting electrical data of a switch cabinet by an intelligent transformer terminal. Background technique [0002] In a large power distribution room, there are many kinds of electrical equipment such as transformers and various switch cabinets; with the development of electrical intelligence, intelligent transformer terminals are gradually equipped on-site in transformers to realize functions such as measurement and control. Communication networks such as GPRS interact with the transformer management system in the background data center. [0003] Because the RS485 bus has the advantages of simple implementation, low price, and mature application, the RS485 bus is the main communication method of the current switch cabinet multi-function meter. The switch cabinet multi-function meter performs information interaction with the b...

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Problems solved by technology

[0003] Because the RS485 bus has the advantages of simple implementation, low price, and mature application, the RS485 bus is the main communication method of the current switch cabinet multi-function meter. The switch cabinet multi-function meter performs information interaction with the background switch cabinet management system through the RS485 bus; There are usually a large number of switch cabinets in large power distribution rooms, so the switch cabinet multi-function meter with relatively simple functions is generally used to realize the measurement and control function of the switch cabinet. The switch cabinet multi-function meter usually uses RS485 communication mode and Modbus protocol. Currently, special The communication management machine summarizes the information of multiple switch cabinet multi-function tables, and then the communication management machine interacts with the background switch cabinet management system (see figure 1 ); but the above-mentioned prior art generally has the following disadvantages: due to the limited transmission distance of the RS485 bus, there are problems of information fusion and repeated construction of the system, and in the current intelligent system of power distribution room, two sets of transformers and switch cabinets are usually used The independent system is completed. Therefore, in the practical application of intelligent switch cabinets in large power distribution rooms, it is necessary to add a communication management machine; the communication management machine also has RS485 interface and other communication interfaces such as Ethernet, which play the role of information aggregation and conversion; On the one hand, the communication management machine is interconnected with the multi-function meter of the switch cabinet through the RS485 bus, and on the other hand, it communicates with the background switch cabinet management system through Ethernet and other interfaces

However, the price of the communication management machine is more expensive, and the increase of communication management opportunities increases the difficulty of connection

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