#Substation optical isolator full

The reliability and latency of this form of communication is questioned for the hard real-time systems utilized in power system automation.Īdvantages of networked architecture includes: The use of networked communication infrastructure in substation environment is limited. The networked architecture has considerable market share of industrial and commercial communication infrastructure. However, this type of networked communication requires an additional component impacting the reliability of the communication system.įurther, the switching communication increases the latency of the data flow. This is shown in Figure 2 where Relay A and PMU A monitor voltages and currents via analog instrumentation channels. IEC 61850 allows for legacy equipment to operate within the same substation with newer equipment.

Different IEDs can record sampled data at independent sampling rates.GE UR-series relays and other 61850 compatible IEDs can be utilized and.Engineering, installation, commissioning, and operating utilized existing skill sets.Prefabricated off the shelf components.Key advantages of the HardFiber system include: This allows inter IED messaging, human machine interfacing, and communication with external stakeholders. In Figure 2 above the station bus facilitates data flow between all substation IEDs, substation control computers, and GATE hardware. This allows a networked architecture at the station bus. Thus, the station bus transmits data significantly slower than the process bus.

#Substation optical isolator full

computing the magnitude from sampled data requires a full period of samples. This additional data requires multiple sampled data point – e.g. In Figure 2 each the relays and PMUs provides additional data to the station bus including voltage and current magnitude, root mean square, etc.

Substation Level Data Acquisition Architecture Overview.

Substation Level Data Acquisition Architectures.

IEC 61850 Substation Level Data Acquisition Overview.

This article describes the functionality and proposed hardware of the UGPSSM. The processing of each UGPSSM is to sample, digitize, and GPS time-stamp all substation data. The UGPSSM device is similar to the IEC 61850 merging unit. In the proposed substation of the future all collected data is initially processed via universal global positioning satellite (GPS) time-synchronized meter (UGPSSMs). The three architectures described are: point to point, networked, and wireless. Three such architectures will be described in terms of the flow of data in a typical substation. This functionality can be performed via multiple architectures. The substation level data acquisition system transmits data from the UGPSSMs (Universal GPS time-synchronized meters) to the control house. Both of these issues impact the overall substation level data acquisition with respect to fidelity, latency, and reliability. Here substation level data acquisition architecture is used to describe the physical connection of devices and the flow of data within the system whereas, communication protocol is the language utilized to communicate information over the network.