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Digital-physical hybrid real-time simulation is considered to be an advanced method for future power system simulation. However, the physical interface will inevitably exist DC component, which causes negative effects on practical applications, such as degradation of simulation performance, damage to physical equipment, etc. A novel DC component elimination control strategy for the digital-physical...
In order to realize intensive research and analysis of the whole bulk power system, which contains all electronic elements not only includes generator, electronic grid system, but also includes power generation system, based on the thermodynamics and dynamics theory in power generation system and the electromechanical and electromagnetic transient theory in electronic grid system, we established a...
The majority of recent large-scale blackouts have been caused by voltage instability. A prompt on-line assessment of voltage stability for preventive corrective control of electric power systems is one of the key objectives for Control centers. The use of classical approximation methods alone is complicated. Therefore, several modified methods combined with machine learning algorithms enabling security...
Efficient disturbance detection is important for power system security and stability. In this paper, a new detection method is proposed based on a time series analysis technique known as ${k}$ -nearest neighbor (${k}$ NN) analysis. Advantages of this method are that it can deal with the electrical measurements with oscillatory trends and can be implemented in real time. The method consists of two...
The power hardware in the loop (PHIL) technology allows for testing a physical device under test (DUT) connected to the real time simulated rest of system (ROS) through a power electronic interface and interface algorithm (IA). Stability and accuracy questions remain open due to the non-ideal interface converter. This paper presents a frequency-domain stability analysis and a time-domain accuracy...
This paper proposes a FPGA-based hybrid real-time simulator (HRTS) utilizing a new coupling method for an analog-digital interface. The proposed method is called “current-current coupling method”. By means of the proposed method, current flows in the digital simulator are represented with a current source in the analog simulator, and current flows in the analog simulator are represented with a virtual...
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