Digital protective relays are primarily IEDs, using a microprocessor to perform several protective, control and similar functions. A typical IED can contain around 5–12 protection functions, 5–8 control functions controlling separate devices, an autoreclose function, self monitoring function, communication functions etc. [ citation needed ]

2019年10月16日 · Event reporting can be easily done by relay IEDs eliminating sequence of events (SOE) recorders. The relay IEDs save the captured data in nonvolatile memory and disturbance event reports (pick up, trip, and auto-reclose), and general event reports like changes of settings have to be saved and managed separately.

In most simple terms, devices like microprocessor-based voltage regulators, protection relays, circuit breaker controllers, etc. that can serially communicate with other devices in the network are known as Intelligent Electronic Devices (IED). It is regarded as an important innovation to the power systems as it provides the apparent change in ...

Com­mon types of IEDs include pro­tec­tive relays, cir­cuit break­er, capac­i­tor bank switch­es, reclos­er con­trollers and volt­age regulators. Most IEDs car­ry com­mu­ni­ca­tion ports and stan­dard com­mu­ni­ca­tion pro­to­col tech­nol­o­gy (e.g. DNP3, IEC 104 or IEC 61850) to com­mu­ni­cate direct­ly with SCADA sys­tems or RTUs.

IED protect relay when overhead line, pow-er cables energize or circuit breaker swtching operations at ultra-high voltage substation. According the test procedures of test standards is helpful for examine the IED surge protection capability. We hope this study may promote the protection perfor-

In modern IEDs, like protection relay devices or power quality analyzer, a DFT or FFT based algorithm is widely used to detect the over current fault condition or harmonic content. In some extreme cases, the IEDs designer wants a processor to handle more than 60 channels of FFT in just several hundred microsecond.

2013年10月22日 · Modern Protection relays are also IED's. Some protection relays have enough I/O and internal logic available to perform all of the functions that a BCU can do. Additionally, as mentioned, breaker related protection and control functions such as sync check and breaker failure can be implemented in the same unit.

智能电网通过电力系 统的高度自动化，可以改进发电和配电的效率、可靠性、经济性以保证电力网络的可持续发展。智能电子设备(ied)是组成智能电网的基本要素，提供系统所需 要的检测、测量、保护和控制功能。

Our Protective Relay and Intelligent Electronic Devices (IED) Management Solution ensures the highest power system security, reliability, and flexibility standards.

在诸如继电保护设备或电力质量分析仪等新式的ied中，广泛采用基于dft或fft的算法检测过流故障条件或谐波成分。 在某些极端情况 下，IED设计工程师希望处理器能够在几百微秒的时间内处理超过60个通道的FFT信号。