A non-linear convex cost model for economic dispatch in microgrids

Bhattacharjee, Vikram; Khan, Irfan

doi:10.1016/j.apenergy.2018.04.001

Cited by 48 publications

(19 citation statements)

References 45 publications

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“…For modeling electric energy storage, the nonlinear constraints illustrated in [27] can be linearized to obtain the linear constraints with good precision. In addition, heat energy storage can be modeled in similar ways [28,29].…”

Section: Remarkmentioning

confidence: 99%

Optimal Economic Dispatch for Integrated Power and Heating Systems Considering Transmission Losses

et al. 2019

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To address the problem of the supply–demand imbalance caused by network transmission losses in integrated power and heating systems (IPHS), this paper presents an optimal economic dispatch strategy to minimize system operation cost and realize coordination and optimization between power and heat. Firstly, an innovative economic dispatch model considering transmission losses is developed, where both power and heat transmission losses models are established with good precision together. In addition, the coordination equation is derived from the formulated nonlinear, multi-constrained coupling optimization problem, where the coordination relationship of units’ outputs is clearly analyzed in an analytic way. Then, a double- λ -iteration algorithm is proposed, which can not only effectively solve the nonlinear coupling optimization problem but also decrease computation burden with faster convergence rate. Finally, simulations performed on five case studies illustrate the satisfying performance of the presented strategy.

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Section: Remarkmentioning

confidence: 99%

Optimal Economic Dispatch for Integrated Power and Heating Systems Considering Transmission Losses

et al. 2019

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“…54 The method for finding the optimal path way of a non-linear model is explained by Bhattacharjee and Khan. 55…”

Section: Development Stages For Automatic Steering System Of the Lhd mentioning

confidence: 99%

A critical review on automation of steering mechanism of load haul dump machine

Rowduru

Kumar

2019

Proceedings of the Institution of Mechanical Engineers, Part I:

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This article presents a brief note on the evolution of steering mechanisms and more emphasized on articulated steering system of the load haul dump machine. In this respect, pictorial representation of the evolution of steering mechanisms for on-road and articulated steering mechanisms of the load haul dump machine is made from the available literature. Critical review on basic elements required for the complete automation of the load haul dump vehicle steering system is presented. Different types of controllers for path tracking error minimization of the scale-modeled or simulated model of the load haul dump steering system are tabulated. Few case studies stimulating the complete automation of the load haul dump steering system employed on the field are also discussed. Challenges and some research gaps in making fully automated steering system of the load haul dump machine are identified in this review article. At the end, based on the critical review, some novel methods for making the fully automated steering system of the load haul dump machine is provided, which is the potential future work for the design and development of feasible automatic steering system.

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“…to 1.7388 p.u. in the system, voltage deviation and power loss in the system should decrease [25][26][27]. The reason is that most of power systems are inductive in nature and rise in reactive power generation improves the voltage magnitude.…”

Section: Case Study 1: 9-bus Systemmentioning

confidence: 99%

Effect of the approximation of voltage angle difference on the OPF algorithms in the power network

2019

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In real-time applications involving power flow equations, measuring of voltage phase angle difference of the connected buses is essential. However, it needs special techniques to measure voltage angle difference, which may enlarge the computational burden of the working controller and hence, may make the control process slow. In this paper, authors investigate the approximation of angle difference to zero and its effects on the convergence speed and optimal solutions of a distributed algorithm. To test this approximation, a distributed nonlinear algorithm is proposed to optimize the multi-objective function which includes power loss, voltage deviation and cost of reactive power generation, by controlling the reactive power generations from distributed generators. Authors investigate the reasons which may outlaw making this approximation and finally, propose a condition to make such approximation. Importance of making this approximation in terms of fast convergence of the algorithms is also illustrated.Index Terms-voltage angles difference approximation, AC power flow, Reactive power control, power loss, voltage deviation.

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A non-linear convex cost model for economic dispatch in microgrids

Cited by 48 publications

References 45 publications

Optimal Economic Dispatch for Integrated Power and Heating Systems Considering Transmission Losses

Optimal Economic Dispatch for Integrated Power and Heating Systems Considering Transmission Losses

A critical review on automation of steering mechanism of load haul dump machine

Effect of the approximation of voltage angle difference on the OPF algorithms in the power network

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