Decentralized Multiarea Robust Generation Unit and Tie-Line Scheduling Under Wind Power Uncertainty

2015 ◽  
Vol 6 (4) ◽  
pp. 1377-1388 ◽  
Author(s):  
Zhigang Li ◽  
Mohammad Shahidehpour ◽  
Wenchuan Wu ◽  
Bo Zeng ◽  
Boming Zhang ◽  
...  
Keyword(s):  
Wind Power ◽  
Tie Line ◽  
Generation Unit

The Principle of an Integrated Generation Unit for Offshore Wind Power and Ocean Wave Energy

2017 ◽  
Author(s):  
Weixing Chen ◽  
Feng Gao
Keyword(s):  
Wind Power ◽  
Wave Energy ◽  
Degrees Of Freedom ◽  
Mechanical Energy ◽  
Ocean Wave ◽  
Offshore Wind ◽  
Offshore Wind Power ◽  
Ocean Wave Energy ◽  
Energy Conversion Devices ◽  
Generation Unit

Energy resources of offshore wind and ocean wave are clean, renewable and abundant. Various technologies have been developed to utilize the two kinds of energy separately. This paper presents the principle of an integrated generation unit for offshore wind power and ocean wave energy. The principle of the unit includes that: The wind rotor with retractable blades and the 3-DOF (degrees of freedom) mechanism with the hemispherical oscillating body are used to collect the irregular wind and wave power, respectively; The energy conversion devices (ECDs) are utilized to convert mechanical energy from both the wind rotor and the 3-DOF mechanism into hydraulic energy; The hydraulic energy is used to drive the hydraulic motors and electrical generators to produce electricity. Some analyses and experiments of the unit is conducted.

scholarly journals Unit Commitment Accommodating Large Scale Green Power

2019 ◽  
Vol 9 (8) ◽  
pp. 1611 ◽  
Author(s):  
Yuntao Ju ◽  
Jiankai Wang ◽  
Fuchao Ge ◽  
Yi Lin ◽  
Mingyu Dong ◽  
...  
Keyword(s):  
Wind Power ◽  
Nuclear Power ◽  
Large Scale ◽  
Unit Commitment ◽  
Thermal Power ◽  
Clean Energy ◽  
Reserve Capacity ◽  
Spinning Reserve ◽  
Peak Shaving ◽  
Generation Unit

As more clean energy sources contribute to the electrical grid, the stress on generation scheduling for peak-shaving increases. This is a concern in several provinces of China that have many nuclear power plants, such as Guangdong and Fujian. Studies on the unit commitment (UC) problem involving the characteristics of both wind and nuclear generation are urgently needed. This paper first describes a model of nuclear power and wind power for the UC problem, and then establishes an objective function for the total cost of nuclear and thermal power units, including the cost of fuel, start-stop and peak-shaving. The operating constraints of multiple generation unit types, the security constraints of the transmission line, and the influence of non-gauss wind power uncertainty on the spinning reserve capacity of the system are considered. Meanwhile, a model of an energy storage system (ESS) is introduced to smooth the wind power uncertainty. Due to the prediction error of wind power, the spinning reserve capacity of the system will be affected by the uncertainty. Over-provisioning of spinning reserve capacity is avoided by introducing chance constraints. This is followed by the design of a UC model applied to different power sources, such as nuclear power, thermal power, uncertain wind power, and ESS. Finally, the feasibility of the UC model in the scheduling of a multi-type generation unit is verified by the modified IEEE RTS 24-bus system accommodating large scale green generation units.

Loss-Minimizing Generation Unit and Tie-Line Scheduling for Asynchronous Interconnection

2018 ◽  
Vol 6 (3) ◽  
pp. 1095-1103 ◽  
Author(s):  
Xiaodong Zheng ◽  
Yiping Chen ◽  
Haoyong Chen ◽  
Yong Zhang ◽  
Jizhong Zhu ◽  
...  
Keyword(s):  
Tie Line ◽  
Generation Unit
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