Operating status detection system for area equipment in converting station

Abstract

The invention discloses an operating status detection system for area equipment in a converting station. The operating status detection system for the area equipment in the converting station comprises a physical layer, a link circuit layer and an appliance layer, and the physical layer, the link circuit layer and the appliance layer are connected in sequence. The physical layer comprises two buses, and the two buses are connected through a plurality of bus return circuits. The bus return circuits comprise a plurality of disconnection mutual inductance units. The disconnection mutual inductance units comprise breakers and current mutual inductors, and the breakers and the current mutual inductors are connected in series. Each bus is connected with outlet lines through the disconnection mutual units. Each outlet line is provided with a voltage mutual inductance unit. The voltage mutual inductance unit comprises a lighting arrester, a voltage mutual inductor and a merging unit. Each bus is further provided with the lightning arrester and the voltage mutual inductor. The plurality of outlet lines are further provided with a main transformer. The plurality of merging units are connected with an equipment status detection analysis device in a converting station area and a power quality detection analysis device. The operating status detection system for the area equipment in the converting station has the advantage of achieving estimating and analyzing the operating status of certain area equipment of the electric system from the perspective of the electric power system analysis.

Description

technical field [0001] The invention relates to an electric power system, in particular to a system for detecting the operating state of regional equipment in a substation. Background technique [0002] In recent years, with the rapid development of the power grid, equipment condition maintenance technology has been widely used, and there are more and more types of online monitoring devices for substation equipment. There are many problems in operation and maintenance, and most of them have a short service life. Generally, they cannot run stably after two years of operation. Often, a defect of the monitored equipment cannot be found within the service life of the equipment online monitoring device. In short, the effectiveness of many online monitoring devices installed on various equipment is poor. How to change the status quo of relying on the installation of online monitoring devices on the monitored equipment for equipment status monitoring in operation is the dream visio...

AI Technical Summary

Problems solved by technology

Although independent devices realize intelligence, there is no real substation system intelligence. Due to independent functions, there is a lack of overall coordination, integrated applications, and function optimization among devices; advanced application functions, such as state estimation, fault analysis, and decision support, have not yet been implemented fully realized

[0005] 2) The secondary wiring is complicated and the load of CT / VT is too heavy. Due to reasons such as the measurement data and control mechanism cannot be shared, and the lack of communication between automation devices, the secondary wiring in the substation is very complicated, and the communication protocols used in the system are not uniform and different. Many manufacturers use different communication protocols, and different degrees of protocol conversion are required during system joint debugging, which increases the complexity of debugging, and also increases the difficulty of operation and maintenance, which brings certain challenges to design, debugging and maintenance. difficult, reducing the reliability of the system

At the same time, there are a lot of hard wiring, which causes overloading of CT / VT

[0006] 3) The intelligent advantages of the device have not been fully utilized

Due to the lack of integrated applications among the independent automation devices in the station, the role of intelligent devices is not fully utilized, thus reducing the use efficiency and investment value of the automation system

[0007] 4) Lack of unified information model

The lack of interoperability between independent automation devices limits its application in the station on the one hand, and brings difficulties to the integration and maintenance of information in the centralized control center on the other hand

Images