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Load is one of the most basic parts of power systems. As power system load increases steadily and related problems like voltage stability tend to be severer, load modeling is becoming more and more important in power system stability analysis and control. However, because of load characteristics like non-linearity, randomness and time-variation, load modeling and parameter identification still remain...
This paper presents a field-test verified method for continuous tracking of voltage-dependent load model parameters. The basic idea is to use the natural or automatic movement of the under load tap changer (ULTC) as the source of voltage disturbance. Load parameters are estimated from each taping activity. While the idea of using manual ULTC tapping disturbances for load parameter estimation is not...
Performance of DC/AC Inverters is decreased due to variable load parameters. Based on a voltage and current double closed-loop control inverter model, a novel load on-line parameter estimation control method is proposed. In this method, load parameters of inverters are calculated on-line. And then, controller coefficients of inverters are modified according to load parameters. Modify strategy of controller...
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