Small-Disturbance Angle Stability Enhancement Through Direct Load Control Part I—Framework Development

Ramanathan, B.; Vittal, Vijay

doi:10.1109/tpwrs.2006.873029

Cited by 17 publications

(11 citation statements)

References 6 publications

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“…The general concepts can, however, be extended naturally to allow load control to assist in alleviating voltage collapse [5]. The use of load control for damping oscillatory modes [6] is also beyond the scope of this paper.…”

Section: Power System Operation and Controlmentioning

confidence: 99%

Achieving Controllability of Electric Loads

2011

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This paper discusses actively involving highly distributed loads in power system control actions; an overview of system control objectives is provided.By Duncan S. Callaway, Member IEEE, and Ian A. Hiskens, Fellow IEEE ABSTRACT | This paper discusses conceptual frameworks for actively involving highly distributed loads in power system control actions. The context for load control is established by providing an overview of system control objectives, including economic dispatch, automatic generation control, and spinning reserve. The paper then reviews existing initiatives that seek to develop load control programs for the provision of power system services. We then discuss some of the challenges to achieving a load control scheme that balances device-level objectives with power system-level objectives. One of the central premises of the paper is that, in order to achieve full responsiveness, direct load control (as opposed to price response) is required to enable fast time scale, predictable control opportunities, especially for the provision of ancillary services such as regulation and contingency reserves. Centralized, hierarchical, and distributed control architectures are discussed along with benefits and disadvantages, especially in relation to integration with the legacy power system control architecture. Implications for the supporting communications infrastructure are also considered. Fully responsive load control is illustrated in the context of thermostatically controlled loads and plug-in electric vehicles.

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Section: Power System Operation and Controlmentioning

confidence: 99%

Achieving Controllability of Electric Loads

2011

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“…This point, also, may be used to define the end of the alert zone. 5. Use a small-signal stability software to obtain a margin of small signal stability (i.e.…”

Section: E Computational Algorithmmentioning

confidence: 99%

“…In [5], Ramanathan and Vittal developed an SSV based framework for direct load control aimed at enhancing small-disturbance angle stability.…”

Section: Introductionmentioning

confidence: 99%

A robustness-based approach to determining preventive and emergency control zones

Castellanos

Messina

2010

IEEE PES General Meeting

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Structured singular value theory has been used in a number of applications to check the robust stability in power system models with real parametric uncertainty. In this paper, a general formulation for characterizing the effect of simultaneous variations of operating conditions on robust stability problems associated with real parameter variations is presented. Robustness evaluation techniques are then used to produce online preventive and emergency control actions. Such improvements are required for analysis of large-scale uncertain systems, which have large numbers of uncertain parameters.

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“…An approach was proposed to determine a boundary of small-signal stability performance of a power system in terms of active power loads selected at a few buses [14]. The framework of preventive modulation of selected loads through direct control for small-disturbance angle stability enhancement was presented [15] and the results on an equivalent of the Western Electric Coordinating Council (WECC) system were presented [16]. An interactive evolutionary algorithm for the identification and selection of DLC actions in electrical distribution networks was proposed in [17].…”

Section: Introductionmentioning

confidence: 99%

Direct Load Control (DLC) Considering Nodal Interrupted Energy Assessment Rate (NIEAR) in Restructured Power Systems

Wang

Goel

2010

IEEE Trans. Power Syst.

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A direct load control (DLC) scheme of air conditioning loads (ACL) considering direct monetary compensation to ACL customers for the service interruption caused by the DLC program is proposed in this paper for restructured power systems. The nodal interrupted energy assessment rate (NIEAR), which is used as the bids from the ACL customers, is utilized to determine the direct monetary compensation to the ACL customers. The proposed scheme was investigated for the PoolCo electricity market. The optimal DLC scheme is determined based on the minimum system operating cost which is comprised of the system energy cost, the system spinning reserve cost and the compensation cost to the ACL customers. Dynamic programming (DP) was used to obtain the optimal DLC scheme. The IEEE reliability test system (RTS) was studied to illustrate the proposed DLC scheme.Index Terms-Air conditioning loads, direct load control, dynamic programming, nodal interrupted energy assessment rate, reliability test system (RTS), restructured power systems.

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Small-Disturbance Angle Stability Enhancement Through Direct Load Control Part I—Framework Development

Cited by 17 publications

References 6 publications

Achieving Controllability of Electric Loads

Achieving Controllability of Electric Loads

A robustness-based approach to determining preventive and emergency control zones

Direct Load Control (DLC) Considering Nodal Interrupted Energy Assessment Rate (NIEAR) in Restructured Power Systems

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