Research on Complex Power Flow Calculation in Power Systems Using P-Q Decomposition Method Based on POWERWORLD Software
DOI:
https://doi.org/10.6911/WSRJ.202505_11(5).0006Keywords:
Power system; Power flow calculation; P-Q decomposition method; Power distribution; Visual simulation.Abstract
According to the three basic requirements of power flow calculation, and following the development of this field, this paper uses the large scale power system visualization software POWERWORLD SIMULATOR, developed by the University of Illinois in the United States to establish the international general power system model, using P-Q decomposition method to calculate the power flow under various operation modes, and the current carrying capacity and voltage level of the line are analyzed. This design focuses on determining the operating state of the whole system, such as voltage (amplitude and phase angle), power distribution and power loss on each bus. This design simulates the power flow of three-machine and nine-node power system. By simulating different running states, the power flow is calculated and compared with the result of MATLAB, and the correctness is verified. Then the different fault schemes are simulated, and the stability calculation is carried out, and the limit cutting time of the fault is calculated. The simulation results can reflect the power distribution intuitively and visually, guarantee the power system safer, steady and economic performance, and raise the economic benefit.
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