scholarly journals Study on Renewable Energy Accommodation Capacity Assessment Method Based on Time Series Production Simulation

2021 ◽  
Vol 2076 (1) ◽  
pp. 012022
Author(s):  
Yinsheng Su ◽  
Qian Ma ◽  
Qiang Zhang ◽  
Quan Yuan ◽  
Xinlei Huang
Keyword(s):  
Time Series ◽  
Renewable Energy ◽  
Power Transmission ◽  
Power Grid ◽  
Assessment Method ◽  
Energy Output ◽  
Series Production ◽  
Regional Power ◽  
Energy Accommodation ◽  
Unit Output

Abstract In order to solve the problem of low accommodation rate of renewable energy in a single region, considering the output characteristics of wind power and photovoltaic, grid constraints and cross regional power exchange, an optimization model of renewable energy accommodation capacity in a cross regional power grid year is established. This paper analyzes the factors restricting the accommodation capacity of renewable energy, and determines the access scale of renewable energy units according to the characteristics of different power grid scale, load and power supply structure. And then taking the annual maximum accommodation capacity of renewable energy as the goal, the time series production simulation model is established, considering the constraints such as regional load balancing, power transmission and output of the network cable, unit output, unit optimization power ramp rate and renewable energy output. To improve the renewable energy accommodation capacity, the three factors of power system interconnection level, power regulation performance and load characteristics can be considered.

Optimization of Voltage and Reactive Power in Regional Power Network Based on MCR

2014 ◽  
Vol 986-987 ◽  
pp. 394-399
Author(s):  
Xue Yong Xu ◽  
Pan Zhou ◽  
Qi Zhe Huang ◽  
Chun Ming Deng ◽  
Meng Meng Shi ◽  
...  
Keyword(s):  
Reactive Power ◽  
Power Transmission ◽  
Power Grid ◽  
Magnetic Control ◽  
Power Network ◽  
Regional Power ◽  
Immune Genetic Algorithm ◽  
Power Sources ◽  
Power Resources ◽  
Hierarchical Partition

Along with the increasing use of cables in power grid and the increasing ration of distributed power sources’ synchronization, such as small hydropower’s synchronization, increasing the reactive power transmission on the line, make it difficult to achieve the balance of reactive hierarchical partition. Take a certain region’s power grid for actual examples, after the installation of magnetic control reactor (MCR), using immune genetic algorithm (IGA) to coordinate the capacity of magnetic control reactor and the existing reactive power resources, the results show that the magnetic control reactor does much good to absorb the system’s excessive reactive power and limit the voltage’s increasing.

Assessing the Impacts of Inter-Regional Power Transmissions on Energy Structure in China’s Power Sector

2014 ◽  
Vol 962-965 ◽  
pp. 1757-1761
Author(s):  
Jie Zhao ◽  
Can Wang ◽  
Min Hua Ye
Keyword(s):  
Renewable Energy ◽  
Energy Use ◽  
Optimal Allocation ◽  
Power Transmission ◽  
Thermal Power ◽  
Energy Structure ◽  
Regional Power ◽  
Power Sector ◽  
Regional Energy ◽  
The Impact

Ultra-high voltage (UHV) inter-regional power transmissions not only can upgrade the optimal allocation ability of electricity energy in a wider range, but also can link the renewable energy power plant center and electricity load center. We use a bottom-up optimization model based on six regional power grids to simulate the impact of inter-regional transmission on energy structure in china’s power sector. The result shows that it maybe not has the positive effect as we had expected, the main consequence of the inter-regional power transmission is the thermal power generation migration among different regions, which has no significant effect on promoting renewable energy in the absence of other incentive policies. As a new form of inter-regional energy deployment, UHV inter-regional power transmission will change our future regional energy use, as well as air emissions, greenhouse gas emissions and other development path, so we also put SO2, NOx and CO2 emission control into consideration.

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