An active power dispatch technique using pseudo spot price of electricity for a power system area including limited energy supply thermal units

Fadıl, Salih; Yaşar, Celal

doi:10.1016/s0142-0615(01)00027-8

Cited by 2 publications

(3 citation statements)

References 9 publications

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“…The detailed information about determination of new scaling factors by means of linear interpolation can be found in reference [10]. Do an AC load flow calculation by using units' active and reactive generations.…”

Section: Calculations Done In An Outer Loopmentioning

confidence: 99%

“…Spot price of electricity algorithm was utilized for the solutions of various problems. It was used in the solution of active power dispatch problem in a multi-area interconnected system [6], in the solution of active and reactive power dispatch problem in a lossy electric power system comprising only normal thermal units [7], in the solution of active generation dispatch problem in a lossy electric power system containing pumped-storage hydraulic unit [8], in the solution of lossy short-term hydrothermal coordination problem [9] and in the solution of active generation dispatch problem in a lossy electric power system which includes normal and limited energy supply thermal units [10]. In Reference [11], lossy short-term hydrothermal coordination problem with limited energy supply thermal units is solved by using genetic algorithm.…”

Section: Introductionmentioning

confidence: 99%

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A spot price of electricity algorithm applied to lossy short‐term hydrothermal scheduling problem with limited energy supply thermal units

Yaşar

Fadıl

Babadağı³

2007

Int Trans Elec Energy Syst

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SUMMARYA lossy electric power system including normal and limited energy supply thermal units and hydraulic units are considered in this paper. The total thermal cost for an operation period of the system is minimized under some possible electric, hydraulic, and fuel constraints. The minimization of the total thermal cost is achieved by determining active generations of all units in all subintervals by means of a spot price of electricity algorithm proposed by our research group. Application of the algorithm is demonstrated on a lossy electric power system that contains 16 buses, three normal thermal, two limited energy supply thermal and 4 hydraulic units (coupled). Obtained results are discussed in the example section of the paper.

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Section: Calculations Done In An Outer Loopmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A spot price of electricity algorithm applied to lossy short‐term hydrothermal scheduling problem with limited energy supply thermal units

Yaşar

Fadıl

Babadağı³

2007

Int Trans Elec Energy Syst

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“…Some of these methods use the pseudo spot price algorithm (PSPA) [2], evolutionary programming (EP) [3], and the Hopfield neural networks [4]. The dispatch problem of the first period of the system, which is considered in this article, was previously solved by means of EP [5], tabu search (TS) [6], improved EP (IEP) [7], the differential evolution algorithm (DEA), and the modified DEA (MDEA) [8].…”

Section: Introductionmentioning

confidence: 99%

A Security-constrained Economic Power Dispatch Technique Using Modified Subgradient Algorithm Based on Feasible Values and Pseudo Scaling Factor for a Power System Area Including Limited Energy Supply Thermal Units

Fadıl

Yazıcı

Urazel

2011

Electric Power Components and Systems

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A security-constrained power dispatch problem with non-convex cost function for a lossy electric power system area including limited energy supply thermal units fueled under a take-or-pay agreement is formulated. Then, an iterative solution method based on a modified subgradient algorithm based on feasible values and common pseudo scaling factor for limited energy supply thermal units is proposed and used to solve the problem. In the iterative proposed solution method, a modified subgradient algorithm based on feasible values is used to solve the dispatch problem in each subinterval, while the common pseudo scaling factor for limited energy supply thermal units is employed to adjust the amount of fuel consumed by the limited energy supply units during the considered operation period.Since all equality and inequality constraints in the non-linear optimization model of a subinterval are functions of bus voltage magnitudes and phase angles (the off-nominal tap settings), they are taken as independent variables except for those belonging to the reference bus. Load flow equations are added to the model as equality constraints. The unit generation constraints, transmission line capacity constraints, bus voltage magnitude constraints, and off-nominal tap setting constraints are added into the optimization problem as inequality constraints. Since the modified subgradient algorithm based on feasible values requires that all inequality constraints should be expressed in equality constraint form, all inequality constraints are converted into equality constraints by the method given in this article before application of the modified subgradient algorithm based on feasible values to the optimization model.The proposed technique is tested on an IEEE 30-bus test system with a nonconvex total cost rate curve. A portion of the dispatch problem considered in this article, where only a loading of the system in a subinterval is considered, was also solved by some other recently reported dispatch techniques. First, minimum total fuel cost rates and solution times obtained from the modified subgradient algorithm based on feasible values versus other techniques are compared, and the outperformance of the modified subgradient algorithm based on feasible values in terms of both total cost rate and solution time is demonstrated. After that, the optimal total fuel cost A Power Dispatch Technique Using F-MSG Algorithm 1749 value and solution time of the system for the operation period for the cases where the fuel constraint is ignored and not ignored are presented, and it is shown that adding the fuel constraint into the dispatch problem further decreases the optimal total fuel cost for the considered dispatch problem. Finally, the modified subgradient algorithm based on feasible values was applied to the fuel constrained dispatch problem directly. It is demonstrated that the proposed solution method, where the modified subgradient algorithm based on feasible values is employed to solve an interval's dispatch problem, gives a solution time ...

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An active power dispatch technique using pseudo spot price of electricity for a power system area including limited energy supply thermal units

Cited by 2 publications

References 9 publications

A spot price of electricity algorithm applied to lossy short‐term hydrothermal scheduling problem with limited energy supply thermal units

A spot price of electricity algorithm applied to lossy short‐term hydrothermal scheduling problem with limited energy supply thermal units

A Security-constrained Economic Power Dispatch Technique Using Modified Subgradient Algorithm Based on Feasible Values and Pseudo Scaling Factor for a Power System Area Including Limited Energy Supply Thermal Units

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