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A directional control method for interface flow considering static voltage stability |
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| Affiliation: | 1. Department of Electrical Power Engineering, Universiti Tenaga Nasional, Kajang, 43000, Selangor, Malaysia;2. Institute of Sustainable Energy, Universiti Tenaga Nasional, Kajang, 43000, Selangor, Malaysia;3. School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, NSW 2522 Australia;4. Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia;5. School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW 2052, Australia;1. School of Economics and Management, University of Chinese Academy of Sciences, Beijing 100190, China;2. MOE Social Science Laboratory of Digital Economic Forecasts and Policy Simulation at UCAS, University of Chinese Academy of Sciences, Beijing 100190, China;3. School of Emergency Management Science and Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;4. Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190, China;5. School of Entrepreneurship and Management, ShanghaiTech University, Shanghai 201210, China |
| Abstract: | A directional control method (DCM) for power flows on a set of interface lines between two regions of power system considering static voltage stability margin is developed in this paper. A surface approximation approach is firstly used to obtain the relationship between the interface flow solution and the generation direction of generator (the portion of generation variation in each participating generator to satisfy the desired power increase on the interface and the system loss). Then, an optimization model is built to determine the optimum dispatching scheme of generators. This method not only can control the total power on the interface to satisfy the power demand but also can realize the directional control of power on each interface line based on the needs of operation. The proposed DCM is further extended to determine the optimum dispatching scheme of generators for maximizing the interface flow margin (IFM), which is the active power margin of the key transmission lines between two regions of power system constrained by static voltage stability. A modified continuation power flow (MCPF) is used to show and evaluate the impacts of the DCM on the IFM. The New England 39-bus system and the IEEE 300-bus system have been employed to verify the effectiveness of the DCM. |
| Keywords: | Directional control Surface approximation Static voltage stability Interface flow margin (IFM) Security region Modified continuation power flow (MCPF) |
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