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Start Over Author "Tiankui Sun" Topic power systems
2 results on '"Tiankui Sun"'

1. Effect of Load Change on the Thevenin Equivalent Impedance of Power System

Author

Tiankui Sun, Zhimin Li, Shuang Rong, Jian Lu, and Weixing Li

Subjects
power systems, Thevenin equivalent impedance, load change, impedance match theory, Technology
Abstract

This paper discusses the effect of load change on the Thevenin equivalent impedance of power systems. In this paper, the Thevenin equivalent impedance influenced by the derivative of active load with respect to reactive load (dP dQ) is analyzed. The Thevenin equivalent impedance forms a closed curve in a complex plane and shrinks to one point when voltage collapses. The magnitude of the Thevenin equivalent impedance at the collapse point is equal to the magnitude of the load impedance. Therefore, the impedance match theory still holds under the effect of the load change. These features are verified on a New England 39-bus system.

Published
2017
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2. Effect of Load Change on the Thevenin Equivalent Impedance of Power System

Author

Zhimin Li, Tiankui Sun, Shuang Rong, Jian Lu, and Weixing Li

Subjects
Control and Optimization, 020209 energy, Impedance matching, Energy Engineering and Power Technology, 02 engineering and technology, load change, lcsh:Technology, Characteristic impedance, power systems, Control theory, 0202 electrical engineering, electronic engineering, information engineering, Output impedance, Voltage source, Electrical and Electronic Engineering, Engineering (miscellaneous), Mathematics, Renewable Energy, Sustainability and the Environment, business.industry, lcsh:T, 020208 electrical & electronic engineering, Electrical engineering, Impedance bridging, Input impedance, Physics::Classical Physics, Image impedance, impedance match theory, Damping factor, Physics::Accelerator Physics, business, Thevenin equivalent impedance, Energy (miscellaneous)
Abstract

This paper discusses the effect of load change on the Thevenin equivalent impedance of power systems. In this paper, the Thevenin equivalent impedance influenced by the derivative of active load with respect to reactive load (dP dQ) is analyzed. The Thevenin equivalent impedance forms a closed curve in a complex plane and shrinks to one point when voltage collapses. The magnitude of the Thevenin equivalent impedance at the collapse point is equal to the magnitude of the load impedance. Therefore, the impedance match theory still holds under the effect of the load change. These features are verified on a New England 39-bus system.

Published
2017

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