A Method to Evaluate Economic Benefits in Interconnected Systems

Rau, Narayan S.; Necsulescu, Cristina; Schenk, K. F.; Misra, R.B.

doi:10.1109/tpas.1983.317717

Cited by 31 publications

(2 citation statements)

References 4 publications

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“…It exploits the fact that any imbalance induces variations of the common frequency throughout the entire network (Kundur, 1994), so all the network's units participating in primary frequency control can sense even remote unknown power imbalances through measured frequency deviations and adapt their effort to correct them. Since the efforts ✩ The material in this paper was partially presented at the 17th Power Systems Computation Conference (PSCC-11), August 22-26, 2011, Stockholm, Sweden of these units sum up, large synchronous areas can achieve economies of scale (Billinton & Chowdhury, 1988;Rau, Necsulescu, Schenk, & Misra, 1983). This has been one of the motivations for e.g.…”

Section: Introductionmentioning

confidence: 99%

Cooperative frequency control with a multi-terminal high-voltage DC network

et al. 2012

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a b s t r a c tWe consider frequency control in power systems made of several non-synchronous AC areas connected by a multi-terminal high-voltage direct current (HVDC) grid. We propose two HVDC control schemes to make the areas collectively react to power imbalances, so that individual areas can schedule smaller power reserves. The first scheme modifies the power injected by each area into the DC grid as a function of frequency deviations of neighboring AC areas. The second scheme changes the DC voltage of each converter as a function of its own area's frequency only, relying on the physical network to obtain a collective reaction. For both schemes, we prove convergence of the closed-loop system with heterogeneous AC areas.

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Section: Introductionmentioning

confidence: 99%

Cooperative frequency control with a multi-terminal high-voltage DC network

et al. 2012

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“…Here we assume the number of total units is n. The original energy function is F(0)(J) which can be derived by Equation (1).…”

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confidence: 99%

A New Approach to Probabilistic Modeling for Two Interconnected Systems

Wang

Mochizuki

1994

IEEJ Trans. PE

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Evaluating the benefits of interconnected systems is very important for both planning and operating power systems. Such benefits include lower production costs and a higher level of system reliability. Many papers have been written on the subject using the Probabilistic Modeling method. These papers can be roughly divided into two categories. The first category is based on the cumulant method which is prone to the inherent inaccuracies of series expansions. The second category is so-called the segmentation method which requires a great amount computation when being used in interconnected systems. This paper presents a new method of probabilistic modeling for interconnected systems. The method is based on the Equivalent Energy Function approach. To extend the EEF approach to interconnected systems its formulas are slightly altered in form. The proposed method rigorously treats probabilistic properties of residual unit capacities and tie line capacities, and thus accurately simulates the energy exchange processes between two interconnected systems. . The numerical examples given in the paper illustrate the high accuracy and effectiveness of the proposed algorithm.

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