Optimal Siting and Sizing of Networked Hydrogen-Electrical Microgrids Considering Demand-Inducing Effect

แนวคิดหลัก

The core message of this article is that the demand-inducing effect (DIE) associated with hydrogen refueling capacity can significantly impact the economic benefits of networked hydrogen-electrical (HE) microgrids planning, and should be properly modeled and addressed.

บทคัดย่อ

The article studies the networked HE microgrids planning (NHEMP) problem, considering the critical but often-overlooked issue of the demand-inducing effect (DIE) associated with infrastructure development decisions. Specifically, higher refueling capacities will attract more refueling demand of hydrogen-powered vehicles (HVs).

To capture such interactions between investment decisions and induced refueling demand, the authors introduce a decision-dependent uncertainty (DDU) set and build a trilevel stochastic-robust formulation. The upper-level determines optimal investment strategies for HE microgrids, the lower-level optimizes the risk-aware operation schedules across a series of stochastic scenarios, and the middle-level identifies the "worst" situation of refueling demand within an individual DDU set to ensure economic feasibility.

An adaptive and exact decomposition algorithm, based on Parametric Column-and-Constraint Generation (PC&CG), is customized and developed to address the computational challenge and to quantitatively analyze the impact of DIE. Case studies on an IEEE exemplary system validate the effectiveness of the proposed NHEMP model and the PC&CG algorithm. The results show that DIE can make an important contribution to the economic benefits of NHEMP, yet its significance will gradually decrease when the main bottleneck transits to other system restrictions.

สถิติ

The number of hydrogen dispensers (HDs) increases from 6 to 9 when considering the demand-inducing effect.
The average met refueling demand over the entire system increases from 247.66 kg/h to 453.75 kg/h when considering the demand-inducing effect.
The annualized system expenses (ASE) decreases by 17.08% when considering the demand-inducing effect, while the capital expenditures (CAPEX) only increases by 2.39%.

คำพูด

"DIE can make an important contribution to the economic benefits of NHEMP, yet its significance will gradually decrease when the main bottleneck transits to other system restrictions."

ข้อมูลเชิงลึกที่สำคัญจาก

Stochastic-Robust Planning of Networked Hydrogen-Electrical Microgrids

by Xunh... ที่ arxiv.org 04-02-2024

https://arxiv.org/pdf/2404.00568.pdf

สอบถามเพิ่มเติม

How can the proposed NHEMP model and PC&CG algorithm be extended to consider other types of decision-dependent uncertainties beyond the refueling demand

The proposed NHEMP model and PC&CG algorithm can be extended to consider other types of decision-dependent uncertainties by modifying the DDU sets and constraints to accommodate different variables and parameters. For example, if we were to consider the impact of varying renewable energy generation on the operation of the microgrids, we could introduce decision-dependent uncertainty sets related to the output of solar panels or wind turbines. By incorporating these uncertainties into the model, we can analyze how changes in renewable energy generation affect the optimal siting and sizing decisions for the microgrids. Additionally, the PC&CG algorithm can be adapted to solve the updated model by adjusting the constraints and variables to reflect the new decision-dependent uncertainties.

What are the potential limitations or drawbacks of the DDU modeling approach, and how can they be addressed in future research

One potential limitation of the DDU modeling approach is the complexity of capturing all the decision-dependent uncertainties accurately. In real-world scenarios, there may be numerous factors that influence the system's behavior, and it can be challenging to identify and incorporate all of them into the model. To address this limitation, future research could focus on developing more sophisticated algorithms for identifying and quantifying decision-dependent uncertainties. Additionally, sensitivity analysis and robustness testing can help assess the impact of uncertainties on the model's outcomes and provide insights into the reliability of the results. By continuously refining the DDU modeling approach and validating it against real-world data, researchers can improve the accuracy and applicability of the model.

Given the synergistic nature of the energy-transportation system, how can the insights from this study on hydrogen-electrical microgrids be applied to the planning of other integrated energy systems, such as electric vehicle charging infrastructure

The insights from the study on hydrogen-electrical microgrids can be applied to the planning of other integrated energy systems, such as electric vehicle (EV) charging infrastructure, by considering the interdependencies between energy generation, storage, and consumption. For example, similar to the refueling demand in hydrogen-electrical microgrids, the charging demand for EVs can be influenced by the availability of charging stations and the capacity of the electrical grid. By modeling the induced charging demand as a decision-dependent uncertainty, planners can optimize the deployment of EV charging infrastructure to meet the growing demand for electric vehicles. Additionally, the PC&CG algorithm can be adapted to solve the planning problems for EV charging infrastructure, taking into account the dynamic nature of decision-dependent uncertainties and their impact on the system's operation.