Electric energy metering system substation

Abstract

The invention discloses a novel electric energy metering system substation comprising a metering device, transformer substation monitoring active and standby servers (transformer substation monitoring system background), a forward isolation device and an electric energy metering retransmission workstation, wherein the forward isolation device divides the system electric energy metering system substation into two zones with different security levels, i.e. a security I zone (real-time control zone) and a security II zone (non-control production zone); the transformer substation monitoring active and standby servers belong to the system security I zone and are used for directly collecting and processing original electric energy metering data; an intelligent electric energy meter is accessed into the unit by an optical fiber, and the unit retransmits the synchronous electric energy metering data of the workstation by the forward isolation device; the electric energy retransmission workstation is arranged in the outside screen of the isolation device and belongs to the security II zone; the unit can store and retransmit electric energy metering data and transmits electric energy metering data obtained from the monitoring background to a metering master station by the IEC870-5-102 covenant. As a novel electric energy metering system substation, the invention realizes the integration design of transformer substation monitoring and electric energy metering, simplifies redundant configuration, makes data security level clear, conforms to the safety specification of an electric power system and conforms to the development tendency of a digital transformer substation.

Description

Technical field [0001] The present invention belongs to the field of power system automation, and more specifically relates to an electric energy metering system in an electric power system, in particular to an electric energy metering substation of a digital substation. Background technique [0002] The predecessor of the electric energy metering system sub-station is called the electric energy data centralized collector. It is an intermediate device located between the main metering station and the metering device (watt-hour meter). It is an independent device and mainly completes the electric energy data. Collection, processing, storage and forwarding functions. The RS-485 serial communication method is generally used between the traditional electric energy data centralized collector and the smart meter. [0003] At present, the construction of substations is developing towards digitalization and intelligence. One of the design ideas of digital and intelligent substations is th...

AI Technical Summary

Problems solved by technology

Secondary equipment, including relay protection devices, measurement and control devices, fault recording devices, metering devices and other automatic devices, are new microcomputer devices based on all-digital or optical fiber signals, and are transmitted by optical fiber Ethernet. Therefore, this traditional method relies on serial ports. The centralized collection method of electric energy data is obviously not suitable for the design idea of ​​digital substation

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