Dispatchable Distributed Generation Network - A New Concept to Advance DG Technologies

Xue, Yaosuo; Chang, Liuchen; Meng, Julian

doi:10.1109/pes.2007.385517

Cited by 15 publications

(4 citation statements)

References 11 publications

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“…This is not the case when we consider small units close to the load points in the power distribution system, since dispatchable DGs (e.g., gas microturbines and small hydro units) operate with a single fuel and can change operating points in few minutes [14].…”

Section: A Economic Dispatch Of Dgs In Networkmentioning

confidence: 99%

Dispatch of distributed generators under local-information constraints

Pantoja

Quijano

Passino

2014

2014 American Control Conference

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Distributed optimization problems are generally described as the minimization of a global objective function in a system, where each agent can get information only from a neighborhood defined by a network topology. To solve this problem, we present a local strategy based on population dynamics (i.e., the local replicator equation (LRE)), to define functions and tasks assigned to each node in a system represented by a connected graph. To show the application of the proposed strategy, we implement the LRE to solve a problem of economic dispatch of distributed generators with some variations over the original framework. Finally, we present some simulation results obtained with different network topologies to illustrate the optimality and stability of the equilibrium points.

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Section: A Economic Dispatch Of Dgs In Networkmentioning

confidence: 99%

Dispatch of distributed generators under local-information constraints

Pantoja

Quijano

Passino

2014

2014 American Control Conference

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“…This problem has been studied in various levels of sophistication starting from individual end-users up to local utilities. In particular, a balancing approach to achieve overall dispatchability in a distributed generation network is presented in Xue et al (2007), which consequently converts a group of small distributed generations into a large logical generation station.…”

Section: Phan and Ghoshmentioning

confidence: 99%

A two-stage non-linear program for optimal electrical grid power balance under uncertainty

Phan¹,

Ghosh²

2011

Proceedings of the 2011 Winter Simulation Conference (WSC)

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We propose a two-stage non-linear stochastic formulation for the economic dispatch problem under renewable-generation uncertainty. Each stage models dispatching and transmission decisions that are made on subsequent time periods. Certain generation decisions are made only in the first stage and the second stage realizes the actual renewable generation, where the uncertainty in renewable output is captured by a finite number of scenarios. Any resulting supply-demand mis-match must then be alleviated using extra, high marginal-cost power sources that can be tapped in short order. We propose two outer approximation algorithms to solve this nonconvex optimization problem to optimality. We show that under certain conditions the sequence of optimal solutions obtained under both alternatives has a limit point that is a globally-optimal solution to the original two-stage nonconvex program. Numerical experiments for a variety of parameter settings were carried out to indicate the efficiency and usability of this method of large practical instances.

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“…This problem is often addressed by balancing energy provided by non-dispatchable sources (such as wind and photovoltaic units) with quickly dispatchable sources (such as small hydro and micro turbine units). [5], [6], [7], [8], [9] study this problem in differing levels of sophistication starting from individual end-users up to local utilities. In particular, a balancing approach to achieve overall dispatchability in a distributed generation network is presented in [5], which consequently converts a group of small distributed generations into a large logical generation station.…”

Section: Introductionmentioning

confidence: 99%

Integration of demand response and renewable resources for power generation management

et al. 2011

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A single-period optimal dispatching problem is considered for a network of energy utilities connected via multiple transmission lines, where we seek to find the lowest operationalcost dispatching of various energy sources to satisfy demand. Our model includes traditional thermal resources and renewable energy resources available generation capabilities within the grid.A key novel addition is the consideration of demand reduction as a virtual generation source that can be dispatched quickly to hedge against the risk of unforeseen shortfall in supply. Demand reduction is dispatched in response to incentive signals sent to consumers. The control options of our optimization model consist of the dispatching order and dispatching amount of the thermal generators together with the rebate signals sent to end-users at each node of the network under a simple demand response policy. Numerical experiments based on our analysis of representative data are presented to illustrate the effectiveness of demand response as a hedging option.

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Dispatchable Distributed Generation Network - A New Concept to Advance DG Technologies

Cited by 15 publications

References 11 publications

Dispatch of distributed generators under local-information constraints

Dispatch of distributed generators under local-information constraints

A two-stage non-linear program for optimal electrical grid power balance under uncertainty

Integration of demand response and renewable resources for power generation management

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