Exploration and practice of key technologies for control strategy optimization of large-scale centralized integration renewable energy generation

Author(s):  
Ping Wei ◽  
Chao Huo ◽  
Shuanbao Niu ◽  
Xianbo Ke ◽  
Hongying Zhang ◽  
...  
2019 ◽  
Vol 9 (7) ◽  
pp. 1484 ◽  
Author(s):  
Xiangwu Yan ◽  
Weichao Zhang

Due to the irreversible energy substitution from fossil fuels to clean energy, the development trend of future power systems is based on renewable energy generation. However, due to the incompatibility of converter-based non-dispatchable renewable energy generation, the stability and reliability of traditional power systems deteriorate as more renewables are introduced. Since conventional power systems are dominated by synchronous machines (SM), it is natural to utilize a virtual synchronous generator (VSG) control strategy that intimates SM characteristics on integrated converters. The VSG algorithm developed in this paper originates from mimicking mathematic models of synchronous machines. Among the different models of implementation, the second-order model is simple, stable, and compatible with the control schemes of current converters in traditional power systems. The VSG control strategy is thoroughly researched and case studied for various converter-interfaced systems that include renewable generation, energy storage, electric vehicles (EV), and other energy demands. VSG-based integration converters can provide grid services such as spinning reserves and inertia emulation to the upper grids of centralized plants, distributed generation networks, and microgrids. Thus, the VSG control strategy has paved a feasible way for an evolutionary transition to a power electronics-based future power grid. By referring to the knowledge of traditional grids, a hierarchical system of operations can be established. Finally, generation and loads can be united in universal compatibility architecture under consolidated synchronous mechanisms.


2019 ◽  
Vol 13 (3) ◽  
pp. 590-596
Author(s):  
Olivia Rossi ◽  
Arvind Chandrasekaran

Purpose The purpose of this paper is to answer this question by discussing the practicality of implementing microreactor technology towards large-scale renewable energy generation, as well as provide an incentive for future researchers to utilize microreactors as a useful alternative tool for green energy production. However, can microreactors present a viable solution for the generation of renewable energy to tackle the on-going global energy crisis? Design/methodology/approach In this paper, the practicality of implementing microreactor technology toward large-scale renewable energy generation is discussed. Specific areas of interest that elucidate considerable returns of microreactors toward renewable energy production are biofuel synthesis, hydrogen conversion and solar energy harvesting. Findings It is believed that sustained research on microreactors can significantly accelerate the development of new energy production methods through renewable sources, which will undoubtedly aid in the quest for a greener future. Originality/value This work aims to provide a sound judgement on the importance of research on renewable energy production and alternative energy management methods through microreactor technology, and why future studies on this topic should be highly encouraged. The relevance of this opinion paper lies in the idea that microreactors are an innovative concept currently used in engineering to significantly accelerate chemical reactions on microscale volumes; with the feasibility of high throughput to convert energy at larger scales with much greater efficiency than existing energy production methods.


2016 ◽  
Vol 54 (3) ◽  
pp. 524-559 ◽  
Author(s):  
Rizalino B. Cruz

Many studies on energy generation have focused on large-scale systems. But as the search for alternative sources of clean energy becomes imperative, there is the need to examine how local governments leverage their authority on land use to permit small-scale energy facilities. This study examines various factors shaping policy adoption on distributed renewable energy generation through the lens of transaction-cost politics. It deviates from existing land-use perspectives, which usually highlight competition between traditional land-use forces to capture the gains from policy. Policy adoption here implies that actors in their exchanges have been able to identify and reduce the transaction costs that would otherwise have prevented citizens from harvesting renewable energy at their place of residence. These actors minimize transaction costs by making use of the transaction resources available to them in the political market. These resources could ease barriers to political contracting and enable actors to shape policy. They include green firms, network memberships, dedicated staff for the sustainability effort, forms of government, and educated populace, which the study found significant in shaping the adoption of zoning codes that permit distributed renewable energy generation.


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