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Power system reliability is always one of the most important requirements in system operation and planning. For a long time, deterministic methods are widely used in system analysis, such as N-1 rule in transmission system static analysis, but the probability characteristics of the components failure have been ignored, and the risk of actual system can't been obtained exactly. Recently, large-range...
The development of modern power systems has been expanding the grid, and all kinds of new equipment and new technology are emerging, which has increased the complexity of power system. We can not make a very risky experimental research in actual power system because of the importance of power system safety, so only the simulation system can be used as a testing means. Therefore, it is increasingly...
The full-process dynamic real-time simulation not only needs to research the hybrid simulation technology, but also uses information theory, control theory and other disciplines of theory and knowledge, and coordinate information exchange process between the different simulation devices, and realizes real-time dynamic simulation for information flow between various types of physical devices, which...
Forced resonance mechanism is one of many reasons of power system low frequency oscillations. According to this reason, the interactions between thermal system and power system are considered and the sources of resonance mechanism low frequency oscillations in power system are searched from thermal system in this paper. The custom modeling method is adopted in simulation, including unit mathematical...
Aiming at the distinction of the number, type and correlation, respectively, of bad data, three methods based on land-voltage, node power balance and BP neural network, respectively, were proposed to correct bad data, which are applicable in different situations. The simulation results show that the three methods can correct bad data effectively with a high precision in their own application scope.
With the interconnection of power systems, inter- area low frequency oscillation occurs frequently, insufficient damping of the weak-interconnected power grid has become a serious issue affecting power system stability. Considering the high rank of algebraic and differential equations and the geographical distributed data of interconnected power systems, it is necessary to analyze small signal stability...
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