核心概念
This work proposes a mathematical definition of energysheds and introduces an analytical framework for studying energyshed concepts within the context of future electric power system operations.
摘要
The paper introduces the concept of energysheds, which are local energy communities within geographical areas where energy system objectives and constraints are determined and between which energy can be actively exchanged. The authors propose a mathematical definition of an energyshed and analyze the factors that impact a community's ability to achieve energyshed policy incentives within a larger connected power grid, as well as the tradeoffs associated with different spatial policy requirements.
The paper presents two key optimization problems:
- (P1) - Minimizes system costs while adhering to energyshed policy requirements and physical infrastructure constraints.
- (P2) and (P4) - Determine the optimal energyshed policy requirements that maximize the minimum local generation ratio across all energysheds, while considering system-wide costs.
The authors show that the non-convex problem (P2) can be solved to global optimality by reformulating it as a sequence of convex problems. They also demonstrate that the generalized problem (P4) can be solved efficiently by leveraging quasi-linearity and parametric optimization techniques.
The numerical case study on the IEEE 39-bus system illustrates the impact of spatial aggregation of energyshed boundaries on the tradeoffs between local generation ratio requirements and system-wide capacity costs. The results provide insights that can inform policymakers in designing effective energyshed policies.
統計資料
"The goal of the objective function (8a) is to maximize the minimum value of Xk across all energysheds."
"For a given value of τ, we can evaluate the objective function (12a) as f(τ) = τ - 1/ζ f0(yτ), where yτ denotes the solution of a specific instance of the convex problem (P1) parameterized by τ."
引述
"Clearly, there is an interplay between local decisions, regional costs, and global policy objectives and impacts."
"Thus, as far as the authors are aware, this paper is the first attempt to analyze and better understand the role of the power network in enabling or limiting local energyshed objectives."
"Proposition 4. If f0 is convex, then an ε-optimal solution to the non-convex problem (P4) can found by solving a sequence of convex problems of the form (P1) by fixing τ."