Power System Subsynchronous Oscillations Electromagnetic and Electromechanical Transient Hybrid Real-Time Simulation Based on RTDS

2012 ◽  
Vol 433-440 ◽  
pp. 2850-2855
Author(s):  
Lei Shi ◽  
Xiang Ning Xiao
Keyword(s):  
Power Plant ◽  
Power Systems ◽  
Power System ◽  
Real Time ◽  
Hybrid Simulation ◽  
Simulation Program ◽  
Simulation Technology ◽  
Real Time Simulation ◽  
Time Simulation ◽  
Simulation Results

In this paper, power system electromagnetic and electromechanical transient hybrid real-time simulation technology is expounded in details, which has advantages of the electromagnetic transient simulation program and electromechanical ones. The more details needed to analyze the dynamic characteristics of power systems are provided by this hybrid simulation technology, and the scale of power system simulated is not limited in the hybrid simulation program. The hybrid simulation program is applied to analyze the power system subsynchronous oscillation problem occurred in a power plant with 4 turbine generators located in the northwestern China. According to the simulation results, it is clear that the stability of generators is threatened by the subsynchronous oscillations caused by capacitor series compensation in the transmission line connecting the power plant and the load center system. In meantime, the effectiveness of the countermeasure is validated simultaneously by the hybrid simulation results.

scholarly journals Applications of Digital-Physical Hybrid Real-Time Simulation Platform in Power Systems

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2682
Author(s):  
Feng Leng ◽  
Chengxiong Mao ◽  
Dan Wang ◽  
Ranran An ◽  
Yuan Zhang ◽  
...  
Keyword(s):  
Power Systems ◽  
Power System ◽  
Real Time ◽  
Physical Simulation ◽  
Low Cost ◽  
Hybrid Simulation ◽  
Simulation Platform ◽  
Real Time Simulation ◽  
Standard Testing ◽  
Time Simulation

Digital-physical hybrid real-time simulation (hybrid simulation) platform integrates the advantages of both digital simulation and physical simulation by combining the physical simulation laboratory and the real-time digital simulator. Based on a 400 V/50 kVA hybrid simulation platform with 500 kVA short-circuit capacity, the hybrid simulation methodology and a Hausdorff distance based accuracy evaluation method are proposed. The case validation of power system fault recurrence is performed through this platform, and the stability and accuracy are further validated by comparing the hybrid simulation waveform and field-recorded waveform and by evaluating the accuracy with the proposed error index. Two typical application scenarios in power systems are studied subsequently. The static var generator testing shows the hybrid simulation platform can provide system-level testing conditions for power electronics equipment conveniently. The low-voltage ride through standard testing of a photovoltaic inverter indicates that the hybrid simulation platform can be also used for voltage standard testing for various power system apparatus with low cost. With this hybrid simulation platform, the power system simulation and equipment testing can be implemented with many advantages, such as short period of modelling, flexible modification of parameter and network, low cost, and low risk. Based on this powerful tool platform, there will be more application scenarios in future power systems.

scholarly journals Real-time simulation of static synchronous condenser (STATCOM) for compensation of reactive power

2020 ◽  
Vol 10 (6) ◽  
pp. 5599
Author(s):  
Abdellatif Hinda ◽  
Mounir Khiat
Keyword(s):  
Power System ◽  
Real Time ◽  
Reactive Power ◽  
Large Power ◽  
Matlab Simulink ◽  
Real Time Simulation ◽  
Electric System ◽  
Synchronous Condenser ◽  
Time Simulation ◽  
Simulation Results

This paper presents a real time simulation stability of power system by static synchronous condenser (STATCOM) in modern platform real-time simulator named (RT-LAB) using the latest INTEL quad-core processors to simulate a relatively large power system In our work, We have to study the problem of controlling voltage and reactive power in electric system by static synchronous condenser (STATCOM). All the simulations for the above work have been carried out using MATLAB /Simulink and RT-LAB Various simulations have given very satisfactory results and we have successfully improved the voltage by injecting a FACTS device, which is the STATCOM, the Studies and Comparisons of real-time simulation results of the power system with and without STATCOM connected illustrate the effectiveness and capability of STATCOM in improving voltage stability in power system.

scholarly journals MODELING OF POWER SYSTEMS AND TESTING OF RELAY PROTECTION DEVICES IN REAL AND MODEL TIME

2017 ◽  
Vol 60 (3) ◽  
pp. 198-210
Author(s):  
I. V. Novash
Keyword(s):  
Power Systems ◽  
Power System ◽  
Real Time ◽  
Relay Protection ◽  
Open Loop ◽  
Software Test ◽  
Real Time Simulation ◽  
Test Systems ◽  
Time Simulation ◽  
Protection Devices

The methods of modelling of power system modes and of testing of relay protection devices with the aid the simulation complexes in real time and with the help of computer software systems that enables the simulation of virtual time scale are considered. Information input protection signals in the simulation of the virtual model time are being obtained in the computational experiment, whereas the tests of protective devices are carried out with the help of hardware and software test systems with the use of estimated input signals. Study of power system stability when modes of generating and consuming electrical equipment and conditions of devices of relay protection are being changed requires testing with the use of digital simulators in a mode of a closed loop. Herewith feedbacks between a model of the power system operating in a real time and external devices or their models must be determined (modelled). Modelling in real time and the analysis of international experience in the use of digital simulation power systems for real-time simulation (RTDS simulator) have been fulfilled. Examples are given of the use of RTDS systems by foreign energy companies to test relay protection systems and control, to test the equipment and devices of automatic control, analysis of cyber security and evaluation of the operation of energy systems under different scenarios of occurrence of emergency situations. Some quantitative data on the distribution of RTDS in different countries and Russia are presented. It is noted that the leading energy universities of Russia use the real-time simulation not only to solve scientific and technical problems, but also to conduct training and laboratory classes on modelling of electric networks and anti-emergency automatic equipment with the students. In order to check serviceability of devices of relay protection without taking into account the reaction of the power system tests can be performed in an open loop mode with the use of hardware and software test systems. Testing methods for relay protection and their models in open-loop mode have been proposed.

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