An approach for evaluating the impact of an intermittent renewable energy source on transmission expansion planning

2015 ◽  
Vol 16 (10) ◽  
pp. 871-882
Author(s):  
Rongrit Chatthaworn ◽  
Surachai Chaitusaney
Keyword(s):  
Energy Source ◽  
Renewable Energy Source ◽  
Renewable Energy ◽  
Expansion Planning ◽  
Transmission Expansion Planning ◽  
Transmission Expansion ◽  
The Impact

scholarly journals Transmission Expansion Planning for the Optimization of Renewable Energy Integration in the Sulawesi Electricity System

2021 ◽  
Vol 13 (18) ◽  
pp. 10477
Author(s):  
Tumiran ◽  
Lesnanto Multa Putranto ◽  
Roni Irnawan ◽  
Sarjiya ◽  
Adi Priyanto ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Voltage Stability ◽  
Energy Integration ◽  
Voltage Level ◽  
Renewable Energy Integration ◽  
Expansion Planning ◽  
Transmission Expansion Planning ◽  
North Sulawesi ◽  
Electricity System ◽  
Transmission Expansion

In order to meet the growth in demand and the renewable energy integration target, the Sulawesi Electricity System (SES) should be expanded. Currently, the SES is divided into two systems, namely South and North Sulawesi. These two systems have different characteristics, such as the system size, reliability and operational cost. North Sulawesi is smaller, weaker and more expensive than the South System. In order to improve the system reliability, generation and transmission expansion planning should be executed simultaneously to meet the economical investment cost and satisfy the reliability standard. For this purpose, the necessity of a backbone system with a higher voltage level than the existing 150 kV system should be considered, including the interconnection option between the two existing systems in Sulawesi. A methodology based on economic and technical criteria was developed to determine the backbone voltage level. Two voltage level options were considered, namely 275 and 500 kV. Several criteria were considered in order to determine the backbone voltage level, including the economic voltage, the line-loading limit, N-1 contingency, short circuiting, transient stability, voltage stability and small signal stability. The backbone voltage candidates should fulfil all of the criteria. The simulation was conducted in base- and high-demand scenarios, considering the fluctuation of future economic growth. The load flow and the dynamic analysis were simulated in a DIgSILENT Power Factory environment. The results showed that the 275 kV backbone, which was built in 2022, would violate three criteria: the economic voltage, N-1 contingency and voltage stability. On the other hand, the 500 kV backbone voltage level fulfills all of the criteria. The result of this research was considered in the electricity planning documents in Sulawesi. From a technical and economical perspective, the 500 kV backbone was chosen for the SES.

scholarly journals An Overview of Recent Developments in Biomass Pyrolysis Technologies

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3115 ◽  
Author(s):  
M. N. Uddin ◽  
Kuaanan Techato ◽  
Juntakan Taweekun ◽  
M. Mofijur ◽  
M. G. Rasul ◽  
...  
Keyword(s):  
Energy Source ◽  
Renewable Energy Source ◽  
Renewable Energy ◽  
Local Economy ◽  
Biomass Energy ◽  
Pyrolysis Process ◽  
Pyrolysis Products ◽  
Bio Oil ◽  
Future Challenges ◽  
The Impact

Biomass is a promising sustainable and renewable energy source, due to its high diversity of sources, and as it is profusely obtainable everywhere in the world. It is the third most important fuel source used to generate electricity and for thermal applications, as 50% of the global population depends on biomass. The increase in availability and technological developments of recent years allow the use of biomass as a renewable energy source with low levels of emissions and environmental impacts. Biomass energy can be in the forms of biogas, bio-liquid, and bio-solid fuels. It can be used to replace fossil fuels in the power and transportation sectors. This paper critically reviews the facts and prospects of biomass, the pyrolysis process to obtain bio-oil, the impact of different pyrolysis technology (for example, temperature and speed of pyrolysis process), and the impact of various reactors. The paper also discusses different pyrolysis products, their yields, and factors affecting biomass products, including the present status of the pyrolysis process and future challenges. This study concluded that the characteristics of pyrolysis products depend on the biomass used, and what the pyrolysis product, such as bio-oil, can contribute to the local economy. Finally, more research, along with government subsidies and technology transfer, is needed to tackle the future challenges of the development of pyrolysis technology.

scholarly journals Analysis of Constraint-Handling in Metaheuristic Approaches for the Generation and Transmission Expansion Planning Problem with Renewable Energy

Complexity ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-22 ◽  
Author(s):  
Lourdes Martínez-Villaseñor ◽  
Hiram Ponce ◽  
José Antonio Marmolejo-Saucedo ◽  
Juan Manuel Ramírez ◽  
Agustina Hernández
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Stochastic Approach ◽  
Constraint Handling ◽  
Complex Case ◽  
Planning Problem ◽  
Electricity Grid ◽  
Expansion Planning ◽  
Transmission Expansion Planning ◽  
Transmission Expansion

A multiperiod generation and transmission expansion planning (G&TEP) problem is considered. This model integrates conventional generation with renewable energy sources, assuming a stochastic approach. The proposed approach is based on a centralized planned transmission expansion. Due to the worldwide recent energy guidelines, it is necessary to generate expansion plans adequate to the forecast demand over the next years. Nowadays, in most energy systems, a public entity develops both the short and long of electricity-grid expansion planning. Due to the complexity of the problem, there are different strategies to find expansion plans that satisfy the uncertainty conditions addressed. We proposed to address the G&TEP problem with a pure genetic algorithm approach. Different constraint-handling techniques were applied to deal with two complex case studies presented. Numerical results are shown to compare the strategies used in the test systems, and key factors such as a prior initialization of population and the estimated minimum number of generations are discussed.

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