scholarly journals Optimal Dispatch of Microgrid with Combined Heat and Power System Considering Environmental Cost

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2493 ◽  
Author(s):  
Xiuyun Wang ◽  
Shaoxin Chen ◽  
Yibing Zhou ◽  
Jian Wang ◽  
Yang Cui

With the rapid development of wind power generation and photovoltaic power generation, the phenomenon of wind and solar abandoning becomes more and more serious in the operation of power systems, and the microgrid is a new operating mode of power systems which provides a new consumption mode for wind power generation. With the increasingly close connection among energy resources and people’s increasing awareness of environmental protection, this paper establishes a microgrid optimal scheduling model with a combined heat and power system, in consideration of environmental costs. This model aims at the lowest comprehensive cost, at the same time taking into account the emission reductions of SO2 and NOx, considering the cost of power generated by the micro-generator, environmental cost, the related cost of battery, operation and maintenance cost of wind power, and photovoltaic power generation. The related constraints of thermal balance and power balance are also considered during microgrid system operation. The established model is solved with an improved particle swarm algorithm. At last, taking a microgrid system as an example, the validity and reliability of the proposed model are verified.

Energies ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 1 ◽  
Author(s):  
Peng Cheng ◽  
Ning Liang ◽  
Ruiye Li ◽  
Hai Lan ◽  
Qian Cheng

Renewable energy ship was regarded as one of the ship energy technologies with a good prospect. In order to study the application of solar and wind energy on ships in the marine environment and the impact of ship rolling on the system, the feasibility of applying solar energy and wind energy to ships was analyzed, and the structural composition of ship power system incorporating renewable energy source was studied. The model of the ship power system integrated with renewable energy was built in PSCAD/EMTDC simulation software. The layout of wind power generation system and photovoltaic power generation system was given for the actual ship, and the ship parameters and specific parameters of each simulation module were determined. It can be seen that the rolling of ship will cause fluctuations in the grid-connected power of the photovoltaic power generation system and the wind power generation system from the comparison of the simulation curves. Finally, a simulation experiment is provided to prove the access of the battery can well suppress the grid-connected power fluctuation caused by the rolling of the ship, which has an important impact on the stability of the ship power system with renewable energy.


2013 ◽  
Vol 133 (4) ◽  
pp. 350-357 ◽  
Author(s):  
Hiroaki Sugihara ◽  
Akihiro Ogawa ◽  
Manabu Kuramoto ◽  
Fumio Ishikawa ◽  
Hideo Yata ◽  
...  

2007 ◽  
Vol 43 (6) ◽  
pp. 1459-1464 ◽  
Author(s):  
Meei-Song Kang ◽  
Chao-Shun Chen ◽  
Yu-Lung Ke ◽  
Chia-Hung Lin ◽  
Chia-Wen Huang

2021 ◽  
Author(s):  
Reza Ghaffari

Wind power generation is uncertain and intermittent accentuating variability. Currently in many power systems worldwide, the total generation-load unbalance caused by mismatch between forecast and actual wind power output is handled by automatic governor control and real-time 5-minute balancing markets, which are operated by the independent system operators for maintaining reliable operation of power systems. Mechanisms such as automatic governor control and real-time 5-minute balancing markets are in place to correct the mismatch between the load forecast and the actual load. They are not designed to address increased uncertainty and variability introduced by large-scale wind power or solar power generation expected in the future. Thus, large-scale wind power generation with increased uncertainty and intermittency causing variability poses a techno-economic challenge of sourcing least cost load balancing services (reserve).


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