Power System Fault Modeling/Simulation Protective Relay Testing and Simulation

2014 ◽  
Author(s):  
Grace Tang
Keyword(s):  
Power System ◽  
Fault Modeling ◽  
Modeling Simulation ◽  
Protective Relay

Protective Relay Tests of Hybrid SFCLs in a Korean Distribution Power System Using RTDS

2011 ◽  
Vol 21 (3) ◽  
pp. 2188-2192 ◽  
Author(s):  
Seung Ryul Lee ◽  
Jae-young Yoon ◽  
Jae-ho Kim ◽  
Byeongmo Yang ◽  
Byongjun Lee
Keyword(s):  
Power System ◽  
Protective Relay

Synchrophasor-Based Wide Area Protection Scheme for System Stressed Conditions to Avoid Power System Blackout

2019 ◽  
pp. 1-34 ◽  
Author(s):  
Kasimala Venkatanagaraju ◽  
Monalisa Biswal
Keyword(s):  
Power System ◽  
Transmission System ◽  
Area Measurement ◽  
Wide Area ◽  
Stable Operation ◽  
Wide Area Protection ◽  
Large Power ◽  
Wide Area Measurement System ◽  
Protection Scheme ◽  
Protective Relay

Protection of transmission system is crucial for the secured and stable operation of power system. Under stress conditions, the operating parameters of power system violate their limits. From the past anatomy reports of several blackouts, it is clear that equipment, control, and protective relay failures are the major causes behind large power system failure. From study, it is also revealed that failure of back-up protection is more prone during system stressed conditions. In transmission system, third-zone of distance relay is highly affected by system stressed events such as voltage instability and load encroachment. As third-zone protection is a delayed protection scheme, with the help of wide area measurement system better protection function can be provided to reduce future percentage of blackout. In this chapter, a detailed discussion about the existing solutions is provided to mitigate the issue of system stressed conditions and a synchrophasor technology-based approach is provided. Results for different cases are provided to show the efficacy of the proposed method.

scholarly journals Design of Microgrid Protection Schemes Using PSCAD/EMTDC and ETAP Programs

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5784 ◽  
Author(s):  
Hyun Shin ◽  
Sang Heon Chae ◽  
Eel-Hwan Kim
Keyword(s):  
Power System ◽  
Simulation Model ◽  
Computer Aided Design ◽  
Storage System ◽  
Circuit Breaker ◽  
Small Scale ◽  
Distributed Resources ◽  
Protective Relay ◽  
Detailed Simulation ◽  
Switching Devices

Steady-state, harmonics, and transient analysis of a power system by using a detailed simulation model is essential to microgrid operation before the installation of new power facilities, because the microgrid, which is a small-scale independent power grid consisting of distributed resources and an energy storage system, has no choice but to include many inverters consisting of switching devices. Accordingly, in the case of an accident in a microgrid system, various power system simulation tools must be used to calculate the fault current for grid protection components. Specifically, Modelling using Power System Computer Aided Design (PSCAD)/Electro-Magnetic Transient Design and Control (EMTDC) can perform detailed modeling of switching devices into each inverter, and Electrical Transient Analyzer Program (ETAP) can design protection relays. From this perspective, this study designed whole protection components in a microgrid system, including the capacity of switching devices for fault ride through a protective relay and the capacity of the circuit breaker. The parameters of an actual microgrid on the San Cristobal Island, Galapagos, were used to make a detailed simulation model in both PSCAD/EMTDC and ETAP. The capacities of the switching devices were estimated by using PSCAD/EMTDC. Additionally, the rated breaking capacities and the setting values of the protective relay were also calculated from the result of an ETAP simulation.

scholarly journals Cyber-Physical Power System (CPPS): A Review on Modeling, Simulation, and Analysis With Cyber Security Applications

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 151019-151064
Author(s):  
Rajaa Vikhram Yohanandhan ◽  
Rajvikram Madurai Elavarasan ◽  
Premkumar Manoharan ◽  
Lucian Mihet-Popa
Keyword(s):  
Power System ◽  
Cyber Security ◽  
Security Applications ◽  
Modeling Simulation

Power Plant Station Protection System against Voltage Fluctuation

2015 ◽  
Vol 793 ◽  
pp. 65-69 ◽  
Author(s):  
Abadal Salam T. Hussain ◽  
Waleed A. Oraibi ◽  
Fadhel A. Jumaa ◽  
F. Malek ◽  
Syed F. Ahmed ◽  
...  
Keyword(s):  
Power Plant ◽  
Power System ◽  
Short Circuit ◽  
Electrical Power ◽  
Circuit Breaker ◽  
Digital Signal ◽  
Short Circuit Current ◽  
Electrical Power System ◽  
System Protection ◽  
Protective Relay

Electrical Power System protection is required to protectboth the user and the system equipment itself fromany fault, hence electrical power system is not allowed to operate without any protection devices installed. Power System fault is defined as the undesirable condition that occurs in the power system. Some of these undesirable conditions are short circuit, current leakage, ground faultand over-under voltage. With the increasing loads, voltages and short-circuit duty in power plant, over voltage protection has become more important today. Here, the component that had been used is PIC 16F877a microcontroller to control the whole system and especially on the circuit breakers as well as the LCT display unit is used to display the voltage level and type of generator that used to serve the load. Sensors are used to measure both thevoltage and the load. The controlled digital signal from PIC microcontroller is converted by using the digital analog converter to control the whole circuit. Thus a device called protective relay is created to meet this requirement. The protective relay is mostlyoften coupled with circuit breaker in a way that it can isolate the abnormal condition in the system.

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