Power Sharing in an Islanded LV Distribution Network Fully Installed with PV-Battery Systems Based on Grid-Forming Control

Author(s):  
Bowen Wang ◽  
Gregor Verbic ◽  
Weidong Xiao
2021 ◽  
Vol 16 (1) ◽  
pp. 97-103
Author(s):  
Amir Majid

The power sharing of PV sets with battery banks in a low voltage distribution network, is optimized with the aim of extending network lifetime. The network lifetime is analyzed using a probabilistic model, in which each PV-battery set has a certain failure probability of supplying power to any load demand center. This probability is assumed to be of normal distribution, that is related to other factors such as power rating, coverage availability, and battery DoD. To extend network lifetime, redundancies in power sharing are removed by activating different groups of PV sets at different times, with durations depending on their joint Gaussian probabilities in supplying the load demands. The contribution of each PV-battery set, is estimated in an intuitive method according to the evaluated probabilities, in which the network is converted into source nodes and load nodes distributed as an ad hoc network, with formulated Gaussian probabilities. An economic load dispatch is then evaluated among the selected PV sets of probabilities higher than a predefined threshold value, to optimize power sharing of the load. A case study of several PV-battery sets supplying several distributed loads, is analyzed and simulated, with formulated joint probabilities. It is found that lifetime is extended by 190% for three PV sets supplying two load centers.


2020 ◽  
Author(s):  
Caroline A. Hartzell ◽  
Matthew Hoddie
Keyword(s):  

2020 ◽  
Vol 10 (2) ◽  
Author(s):  
Dr. Muhammad Mushtaq ◽  
Muhammad Riaz Mahmood

The problématique of governing diversity has attracted a great deal of scholarly attention but literature has largely overlooked the challenges appertaining to growing religious diversity in many places. The contemporary power sharing models and multicultural policies which are of a secular nature fall short of the expectations to foster peaceful coexistence in multi-religious societies. The primary concern of this paper is to manifest how religion can help us to lessen faith based violence. It is argued that religious traditions may offer valuable insights to design more inclusive governance. In this backdrop, the current paper evaluates the Islamic values of religious accommodation to gauge how helpful they are for designing inclusive policies in religiously diverse societies. The analysis illustrates that Islamic doctrine contemplates the politics of accommodation and forbearance. The pluralistic approach of Islam offered religious autonomy to non-Muslims in the state of Madinah. The ‘millet system’ established by the Ottoman Empire is widely admired for granting non-territorial autonomy in the matters related to religion, culture, and personal laws to non-Muslims. This display of an Islamic pluralistic approach at different junctures of Muslim history attests the capacity of the Islamic values of accommodation to nurture peaceful coexistence in modern societies. However, it requires a more unbiased and rigorous analysis to convince the global audience in this regard.


2009 ◽  
Vol 129 (6) ◽  
pp. 733-744 ◽  
Author(s):  
Shoji Kawasaki ◽  
Yasuhiro Hayashi ◽  
Junya Matsuki ◽  
Hirotaka Kikuya ◽  
Masahide Hojo

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