A small signal stability performance boundary for direct load control

Ramanathan, B.; Vittal, Vijay

doi:10.1109/psce.2004.1397541

Cited by 3 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Physically based electrical models of heating, ventilation and air conditioning residential loads were proposed [13] and the proposed models were implemented and tested to assess their accuracy and suitability in specific kinds of applications. 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].…”

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.

View full text Add to dashboard Cite

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.

show abstract

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.

View full text Add to dashboard Cite

show abstract

“…Distributed resources, such as small generation sources, newer FACTS technology [32], and load control [33,34], individually exert negligible influence on dynamic behavior. However collectively their effect may be significant.…”

Section: Challenges In Dynamic Performance Enhancementmentioning

confidence: 99%

Dynamic Embedded Optimization and Shooting Methods for Power System Performance Assessment

Hiskens

Park

Donde

Power Electronics and Power Systems

View full text Add to dashboard Cite

Power system dynamic performance enhancement can often be formulated as a dynamic embedded optimization problem. The associated cost function quantifies performance and involves dynamically evolving state variables. The dynamic model is embedded within the constraints. Power systems form an important example of hybrid systems, with interactions between continuous dynamics and discrete events playing a fundamental role in behavior. However, it is shown that for a large class of problems, the cost function is smooth even though the underlying dynamic response is non-smooth. Complementing this design-oriented optimization framework, techniques for assessing power system performance and vulnerability can often be expressed as boundary value problems, and solved using shooting methods. It is shown that performance limitations are closely related to grazing phenomena. Techniques are presented for determining parameter values that induce limit cycles and grazing.179 I.A. Hiskens, J-W. Park and V. Donde, "Dynamic embedded optimization and shooting methods for power system performance assessment", in Applied Mathematics for Deregulated

show abstract

“…These facts make it difficult to effectively deal with many power system problems through strict mathematical formulations alone. Therefore, fuzzy set theory-based approach has emerged as a complementary tool to mathematical approaches for solving power system problems [125][126][127][128][129][130][131][132][133][134][135][136][137][138][139]. The advantages of fuzzy set theory over conventional methods are as follows [135,137]:…”

Section: Fuzzy Set Theory Applicationsmentioning

confidence: 99%

“…The DLC curves are categorized into two categories: DLC complying and DLC non-complying loads. Results obtained from the comparison of six different approaches show that the clusters obtained from the proposed approach exhibit lowest degrees of misclassification for the practical data on Taiwan Power Company (TPC) DLC programs.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[130]. The analysis in forming the above boundary was based on Structured Singular Value (SSV or u) framework.…”

mentioning

confidence: 99%

Study of voluntary demand side load shift (VDSLS) and direct load control (DLC) for restructured power systems

Wu¹

View full text Add to dashboard Cite

Electric power utilities around the world have been experiencing restructuring since the 1980s. The objectives of power system restructuring are to introduce competition in the electric power industry and to provide more choices to market participants in the way they trade electricity and ancillary services. The direct consequence of the restructuring is the separation of the conventional vertically integrated utilities into independent generation, transmission and distribution companies. Economic segregation and service unbundling have changed the mechanism of conventional system planning and operation. The expected benefits of power system restructuring are cheaper electricity through competition and innovation, and improved generation and planning efficiency and economies. However, the restructuring of power systems has been accompanied by some problems, including capacity shortage, transmission congestion, price volatility, and reduced system reliability. Load management has re-emerged as an important element in fine-tuning the reliability and price in restructured power systems. Load management, as defined by IEEE's Demand-Side Management Subcommittee, constitutes activities that influence load shape of power systems so as to accomplish peak clipping, valley filling or load shifting which includes everything from direct control of small customer end users to voluntary load shifting by large commercial/industrial customers. By reshaping the system load curve and shaving the system peak load, load management can improve the system reliability and reduce the price volatility of restructured power systems. Load management faces new challenges due to the problems accompanying restructuring of power systems. The existing load management techniques have to be improved to face these challenges. The issues of load management have been studied in this thesis in order to make load management more successful in the new environment. These include the correlation between electricity prices and demands; the effects of the resulting voluntary demand side load shift on system reliability and electricity price volatility; the impact of II

show abstract

A small signal stability performance boundary for direct load control

Cited by 3 publications

References 10 publications

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

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

Dynamic Embedded Optimization and Shooting Methods for Power System Performance Assessment

Study of voluntary demand side load shift (VDSLS) and direct load control (DLC) for restructured power systems

Contact Info

Product

Resources

About