SIIT PROGRESS REPORT A PART OF DISSERTATIONS
A Graph-Based System for Robust Optimal Placement Design of Hybrid Renewable Energy Systems againstFluctuations in Radial Distribution Systems
byAkanit Kwangkaew, Doctoral Student
A Summary Dissertation Timeline
- Accepted 1 paper on SGES 2020 (+1 JAIST)
- (not completed) 1 Jounal on MDPI-Energies
- Accepted 1 Paper on CEPSI2018
- Accepted 1 Paper on MEPS2019
2021
2021
2020
2018
2019
Optimal sizing battery in RE integration Gridbalancing Econimic Conditions
The Optimal sizing battery for Minimizing Loss
Writing A Dissertation
Model Formulation
Literature Reviews of Renewable Energy in Power System
- JAIST:A Graph Based System
- SIIT: Markov and Time Series
- (writing) 1 Journal Writing on MDPI Energies
SUmmary presentation
1.
Overview
- OVERVIEW OF SYSTEM DESIGN (1ST JOURNAL)
- Proposed Idea of the optimal placement
- Meaning of the 'optimal' design
2.
4.
Why loss equation is need?
Simulation and Result ( without Battery )
To minimize the system loss in the graph model, the equation need to re-write.
-Scope of JAIST -(+ESS Sizing) for SIIT
5.
DISCUSSION
Re-calculate the loss calculation
- Scope of JAIST+SIIT
overview of system design (1st journal)
The optimal placement
This is a common part between JAIST and SIIT
Proposed IDEA OF THE OPTIMAL PLACEMENT
1.
2.
Fig.2 the simple system of 2-bus in the graph model
Fig.1 the simple system of 2-bus
Beforehand, the standard model will be transform to the graph model
In thw graph, eadge is equivalent connections of the system
Proposed IDEA OF THE OPTIMAL PLACEMENT
3.
Fig.3 how to determine the position of new source (source C)
To determine the placement (or positioning or sitting) of the additional source (Source c), the connection sequences ({v, w} or {x, y}) selection has been considered, as in Fig.3. If our program select the connection sequence: {v, w} mean Source C will be placed at Busbar A. In the same concept, if our program select the connection sequence: {x, y} mean Source C will be placed at Busbar B. This is my idea for the placement method.
Proposed IDEA OF THE OPTIMAL PLACEMENT
Why the placement is proposed?
3.
2.
1.
Optimal sizing the battery will be fulfilled by the placement method
This problem is an interesting research in the electrical engineering field.
Solve the optimal placement problem
To determine the optimal place for installing of neither sources nor loads, e.g., - find the suitable charging station for vehicle-to-grid (1 EV can be charged at an only one charging station in the same time), and -find the suitable busbar for installing a new renewable source or fluctuating source.
Meaning of the 'optimal' design
Reliability of power supply (JAIST)
Discuss
Network loss reduction (SIIT +JAIST)
Voltage profile improvement
Stability issues
Economic issue (only SIIT: sizing battery)
Meaning of the 'optimal' design
The system contains power sources that supply energy to loads sufficiently without energy shortage. This will be achieved by considering the robustness conditions. The robustness conditions proposed by Kaneko-sensei and Saher-sensei
Reliability of power supply (JAIST)
Network loss reduction (SIIT +JAIST)
Voltage profile improvement
Stability issues
Economic issue (only SIIT: sizing battery)
Meaning of the 'optimal' design
Reliability of power supply (JAIST)
The optimal (sources) placement problem is mainly concerned with the minimization of real power loss. For the n-bus system (m-sources), the real power loss (Ploss) formula may be defined as: The equation is generally used in the other paper. (We need to re-write)
Network loss reduction (SIIT +JAIST)
Voltage profile improvement
Stability issues
Economic issue (only SIIT: sizing battery)
Meaning of the 'optimal' design
Reliability of power supply (JAIST)
Sources are connected near the load (at any busbar) to improve the voltage profile of the network. For the n-bus system, voltage profile improvement function [1] is defined as:
Network loss reduction (SIIT +JAIST)
Voltage profile improvement
Stability issues
Economic issue (only SIIT: sizing battery)
[1] S. Stentz, “Network Reconfiguration in Distribution Systems for Loss Reduction and Load Balancing,” Justice Syst. J., vol. 4, pp. 1401–1407, 1989, doi: 10.1080/23277556.1989.10871109.
Meaning of the 'optimal' design
The voltage profile of a distribution network is characterized [1] by its voltage stability index (VSI) [2] which should always be greater than zero. VSI must be maximized to improve the voltage profile of the distribution network. Voltage stability index of a radial distribution system is given by Fig. 4 as below,
Reliability of power supply (JAIST)
Network loss reduction (SIIT +JAIST)
Voltage profile improvement
Stability issues
Fig.4 Equivalent circuit of the j-th branch of the network between buses k and (k+1).
Economic issue (only SIIT: sizing battery)
[2] R. Ranjan, B. Venkatesh, and D. Das, “Voltage stability analysis of radial distribution networks,” Electr. Power Components Syst., vol. 31, no. 5, pp. 501–511, 2003, doi: 10.1080/15325000390127011.
Section 2
Why loss equation is need?
WHY LOSS EQUATION IS NEED?
System loss reduction is the common issue between JAIST and SIIT research
The equation need to make sure the corectness -- (Force input parameters: Sbus.i : apparent power, and loss is the output)
READ MORE
Section 4
Simulation and Result ( without Battery )
READ MORE
Section 5
DISCUSSION
- Now, journal is being written - the system design (without sizing ESS).
- Show the simulation of the ESS sizing software - (should be implemented as the outside project?)
- Extend our model to determine size of battery in the graph model to reduce the loss (acheive the optimal terms) -- Next Journal
- The next Journal will be good if we can use the Graph model of JAIST's scope?
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Transcript
SIIT PROGRESS REPORT A PART OF DISSERTATIONS
A Graph-Based System for Robust Optimal Placement Design of Hybrid Renewable Energy Systems againstFluctuations in Radial Distribution Systems
byAkanit Kwangkaew, Doctoral Student
A Summary Dissertation Timeline
2021
2021
2020
2018
2019
Optimal sizing battery in RE integration Gridbalancing Econimic Conditions
The Optimal sizing battery for Minimizing Loss
Writing A Dissertation
Model Formulation
Literature Reviews of Renewable Energy in Power System
SUmmary presentation
1.
Overview
2.
4.
Why loss equation is need?
Simulation and Result ( without Battery )
To minimize the system loss in the graph model, the equation need to re-write.
-Scope of JAIST -(+ESS Sizing) for SIIT
5.
DISCUSSION
Re-calculate the loss calculation
- Scope of JAIST+SIIT
overview of system design (1st journal)
The optimal placement
This is a common part between JAIST and SIIT
Proposed IDEA OF THE OPTIMAL PLACEMENT
1.
2.
Fig.2 the simple system of 2-bus in the graph model
Fig.1 the simple system of 2-bus
Beforehand, the standard model will be transform to the graph model
In thw graph, eadge is equivalent connections of the system
Proposed IDEA OF THE OPTIMAL PLACEMENT
3.
Fig.3 how to determine the position of new source (source C)
To determine the placement (or positioning or sitting) of the additional source (Source c), the connection sequences ({v, w} or {x, y}) selection has been considered, as in Fig.3. If our program select the connection sequence: {v, w} mean Source C will be placed at Busbar A. In the same concept, if our program select the connection sequence: {x, y} mean Source C will be placed at Busbar B. This is my idea for the placement method.
Proposed IDEA OF THE OPTIMAL PLACEMENT
Why the placement is proposed?
3.
2.
1.
Optimal sizing the battery will be fulfilled by the placement method
This problem is an interesting research in the electrical engineering field.
Solve the optimal placement problem
To determine the optimal place for installing of neither sources nor loads, e.g., - find the suitable charging station for vehicle-to-grid (1 EV can be charged at an only one charging station in the same time), and -find the suitable busbar for installing a new renewable source or fluctuating source.
Meaning of the 'optimal' design
Reliability of power supply (JAIST)
Discuss
Network loss reduction (SIIT +JAIST)
Voltage profile improvement
Stability issues
Economic issue (only SIIT: sizing battery)
Meaning of the 'optimal' design
The system contains power sources that supply energy to loads sufficiently without energy shortage. This will be achieved by considering the robustness conditions. The robustness conditions proposed by Kaneko-sensei and Saher-sensei
Reliability of power supply (JAIST)
Network loss reduction (SIIT +JAIST)
Voltage profile improvement
Stability issues
Economic issue (only SIIT: sizing battery)
Meaning of the 'optimal' design
Reliability of power supply (JAIST)
The optimal (sources) placement problem is mainly concerned with the minimization of real power loss. For the n-bus system (m-sources), the real power loss (Ploss) formula may be defined as: The equation is generally used in the other paper. (We need to re-write)
Network loss reduction (SIIT +JAIST)
Voltage profile improvement
Stability issues
Economic issue (only SIIT: sizing battery)
Meaning of the 'optimal' design
Reliability of power supply (JAIST)
Sources are connected near the load (at any busbar) to improve the voltage profile of the network. For the n-bus system, voltage profile improvement function [1] is defined as:
Network loss reduction (SIIT +JAIST)
Voltage profile improvement
Stability issues
Economic issue (only SIIT: sizing battery)
[1] S. Stentz, “Network Reconfiguration in Distribution Systems for Loss Reduction and Load Balancing,” Justice Syst. J., vol. 4, pp. 1401–1407, 1989, doi: 10.1080/23277556.1989.10871109.
Meaning of the 'optimal' design
The voltage profile of a distribution network is characterized [1] by its voltage stability index (VSI) [2] which should always be greater than zero. VSI must be maximized to improve the voltage profile of the distribution network. Voltage stability index of a radial distribution system is given by Fig. 4 as below,
Reliability of power supply (JAIST)
Network loss reduction (SIIT +JAIST)
Voltage profile improvement
Stability issues
Fig.4 Equivalent circuit of the j-th branch of the network between buses k and (k+1).
Economic issue (only SIIT: sizing battery)
[2] R. Ranjan, B. Venkatesh, and D. Das, “Voltage stability analysis of radial distribution networks,” Electr. Power Components Syst., vol. 31, no. 5, pp. 501–511, 2003, doi: 10.1080/15325000390127011.
Section 2
Why loss equation is need?
WHY LOSS EQUATION IS NEED?
System loss reduction is the common issue between JAIST and SIIT research
The equation need to make sure the corectness -- (Force input parameters: Sbus.i : apparent power, and loss is the output)
READ MORE
Section 4
Simulation and Result ( without Battery )
READ MORE
Section 5
DISCUSSION