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Overview of Intelligent Electronic Devices

In the power industry, intelligent electronic devices (IEDs), including power equipment, 변압기, 커패시터, and power system devices (such as bank microprocessors), are primarily used as controllers for electricity control.

Functions of Intelligent Electronic Devices

Data Reception and Control Commands

IEDs receive data from sensors and power supplies and issue control commands to circuit breakers when abnormalities in voltage, 현재의, and frequency are detected. They also control voltage levels to maintain desired levels.

Types of Intelligent Electronic Equipment

You can generalize intelligent electronic equipment to include protective relays, road tap changer controllers, circuit breaker controllers, capacitor bank switches, recloser controllers, and other voltage regulators. These are typically controlled by configuration files.

Digital Protection Relay

Importance and Functionality

The digital protection relay is the most crucial relay. Its protection function executes the control function using microprocessors.

Typical IED Functions

A typical IED has about 5 에게 12 protection functions and 5 에게 8 control functions for a single device, including automatic overlapping, self-monitoring, 의사소통, 그리고 더.

IEC 61850 Standard

Recent Development and Design Standards

Among recent intelligent electronic devices, IEC 61850 (English version) meets design standards. This standard pertains to substation automation, providing interoperability and advanced communication functions.