scholarly journals Modelica Implementation and Software-to-Software Validation of Power System Component Models Commonly used by Nordic TSOs for Dynamic Simulations

Author(s):  
Mengjia Zhang ◽  
Maxime Baudette ◽  
Jan Lavenius ◽  
Stig Løvlund ◽  
Luigi Vanfretti
2019 ◽  
Vol 34 (1) ◽  
pp. 338-348 ◽  
Author(s):  
Yijun Xu ◽  
Lamine Mili ◽  
Adrian Sandu ◽  
Michael R. von Spakovsky ◽  
Junbo Zhao

Author(s):  
Hui Hwang Goh ◽  
Sy yi Sim ◽  
Nur Iskandar Bin Hamzah ◽  
Sulaiman bin Mazlan ◽  
Chin Wan Ling ◽  
...  

Power system consists of the generation, transmission, distribution, and substation. All the power system component requires suitable protection devices as the protection system to protect the system during fault occur. In this paper, the circuit breaker has been selected as one of the protection devices in several applications. The types of circuit breaker that has been reviewed in this paper are oil circuit breaker (OCB), air circuit breaker (ACB), sulphur hexafluoride (SF6) circuit breaker, vacuum circuit breaker, and DC breaker which are hybrid DC breaker and solid-state DC breaker. Normally, the systems or the circuits disrupted or damaged by the fault. To implement the protection system in the system or circuit, the type of faults and cause of faults should be known to overcome the fault. To provide the suitable voltage for the consumer, the substation is needed to control the voltage transmitted at high voltage from the generating station. Protection system is also required in a substation.


Author(s):  
Hanyue Li ◽  
Wei C. Trinh ◽  
Jessica L. Wert ◽  
Megan E. Dawkins ◽  
Thomas J. Overbye ◽  
...  

Author(s):  
Paolo Pezzini ◽  
Kenneth M. Bryden ◽  
David Tucker ◽  
Larry Banta

Multi-coordination of actuators for a highly integrated, tightly coupled advanced power system was evaluated using the Hybrid Performance (Hyper) project facility at the U.S. Department of Energy’s National Energy Technology Laboratory (NETL). A two-by-two scenario in a fuel cell, turbine hybrid power system was utilized as a representative problem in terms of system component coupling during transients and setpoint changes. In this system, the gas turbine electric load is used to control the turbine speed, and the cold air bypass valve regulated fuel cell cathode mass flow. Perturbations in the turbine speed caused by variations in the waste heat from the fuel cell affect the cathode airflow, and the cold-air bypass control action required for constant cathode airflow strongly affects the turbine speed. Previous implementation of two single-input, single-output (SISO) controllers failed to provide acceptable disturbance rejection and setpoint tracking under these highly coupled conditions. A multiple-input, multiple-output (MIMO) controller based on the classic internal model control (IMC) concept was implemented and experimentally tested for the first time using the Hyper project facility. The state-space design of the MIMO configuration, the control law integration into the digital control platform, and the experimental comparison with the SISO case are presented.


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