Relay protection coordination with generator capability curve, excitation system limiters and power system relay protections settings

Generator Over Excitation Capability and Excitation System Limiters

Sometimes, power system events have shown the need for generators to operate in the overexcited region to support stable operation. Operation up to, and transiently beyond, the overexcited limits from the capability curve is sometimes required. The two main issues in the paper are the generator capability in this region and the design of OEL (OverExcitation Limiters) in the excitation system th...

Investigation of STATCOM effects on synchronous generator impedance based LOF relay with considering a realistic model for the excitation system of the generator

This paper studies the effects of static synchronous compensator (STATCOM) on synchronous generator conventional loss of field (LOF) protection. To accomplish a comprehensive study, a typical and realistic excitation system is considered for the generator by using the phase-domain generator model available in the real-time-digital-simulator. Using such a system, LOF phenomenon is realistically ...

Loss-of-Field Protection Relay Coordination for Synchronous Generator and Motor Unit Based on Transient Stability

Distribution Protection Relay Software Models in Interaction with Power System Simulators

Modelling and simulation software developed for analysing protective relaying applications and relay (IED) design concepts in power distribution is described in the paper. Matlab has been selected as programming environment for protective relaying software modelling. Within Matalabs Simulink environment, SimPowerSystems is selected as a design tool for modelling and simulating a distribution po...

Optimal Combined and Adaptive Protection of Active Distribution Networks Considering Different System Topologies Incorporating Optimal Selection of Standard Relay Curves

The change in the topology of active distribution networks (ADNs) is one of the essential challenges that might affect the protection schemes. The conventional protection schemes based on base topology result in some coordination constraint violations in other topologies due to the outage of upstream substations and distributed generation units. In this article, new combinational and adaptive p...