A new approach for voltage control area identification based on reactive power sensitivities

Maharjan, Rabindra; Kamalasadan, Sukumar

doi:10.1109/naps.2015.7335231

Cited by 8 publications

(7 citation statements)

References 12 publications

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“…According to [7] and [8], the transmission system can be divided in voltage control areas based on the electrical distance between buses. It is shown in [2], [3], [6], [7] and [8] that the electrical distance can be obtained from the…”

Section: Mathematical Formulation Of Electrical Distancementioning

confidence: 99%

“…Although the correlation between voltage magnitude and reactive levels allows the existence of an optimal point, since it depends on the use of capacitors, inductors, synchronous condensers and transformers [1], finding it is an expensive and complex process. On the other hand, it is also a known fact that, in general, the effect of voltages on power systems has a local nature, what means that the major effects of voltage variation are limited to a certain neighborhood [2] and [3]. Therefore, if the region with reactive power problems can be identified, then the voltage magnitude and reactive power can be locally controlled by implementing reactive power reserves [2].…”

Section: Introductionmentioning

confidence: 99%

“…A VCA is composed by a set of generation and load buses with voltage magnitude behavior very similar to reactive power generation and load changes outside the VCA [4] and the generators within a VCA are the primary reactive power reserve to the area [5]. The VCAs can be determined based on the concept of electrical distance between buses [2], [3], [6], [7] and [8]. Since the VCAs suggestions depends on physical characteristics such as branch conductance and susceptance, adding a small generator to the system connected near to the demand, which is the definition of distributed generation (DG) according to [9] and [10], may change the VCAs.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Voltage Control Areas in Transmission Systems with Distributed Generation

Faria¹,

Oliveira²,

Hoji³

et al. 2024

RE&PQJ

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Transmission systems' main function is to transport active power from the generation source to the consumers. The presence of reactive power in a transmission system, on the other hand, is not desirable. Since the reactive power problem is characteristically local, its adjustment may be determined using devices placed near the consuming centers. Therefore, the system can be separated into regions and the reactive power problem be treated locally. This paper presents a computational tool for determining the voltage control areas (VCAs) in transmission systems based on the concept of electrical distance and the decoupled power flow method, which allows the treatment of the active and reactive power problems separately, reducing computational efforts. The presented tool also considers distributed generation and its influence on the voltage control areas. The tests have been conducted with IEEE 14 and 30 bus systems and proper conclusions are derived.

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Section: Mathematical Formulation Of Electrical Distancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Voltage Control Areas in Transmission Systems with Distributed Generation

Faria¹,

Oliveira²,

Hoji³

et al. 2024

RE&PQJ

View full text Add to dashboard Cite

show abstract

“…However, the above reports all neglect the controllability of reactive sources. Maharjan and Kamalasadan define the electrical distances between reactive power sources, but the dimensions of the VCA problems are thereby increased significantly . Aggarwal et al indicate that if the dimensions keep increasing, it becomes rather hard to identify the decoupling degree of the network, which may result in failures of partitioning.…”

Section: Introductionmentioning

confidence: 99%

Stochastic optimal reactive power reserve dispatch considering voltage control areas

Fang

Cheng

et al. 2016

Int. Trans. Electr. Energ. Syst.

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Summary Conventional optimal reactive power reserve dispatch approaches are mostly modeled in deterministic forms, where the power injections are fixed. With the integration of intermittent renewable sources, the power injections could become uncertain. To maintain the security, a stochastic optimal reactive power reserve dispatch model is proposed, which is formulated as a chance‐constrained optimal power flow problem. To begin, a multistage partitioning method considering both the decoupling degree and the robustness to failure is proposed to obtain the voltage control areas. Then, the original nonlinear stochastic optimal reactive power reserve dispatch model is decomposed into a successive multiarea linearized programming problem. Finally, a chance constraint relaxation–based method is proposed to solve the above problem. The results show that the proposed method can significantly enhance the voltage stability margin, and the security in uncertain scenarios can also be maintained for the satisfaction of the chance constraints.

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“…This method of finding electrical distance has been applied in Zhong [12] and Nobile [13]. Maharjan [14] identified voltage control areas based on direct relationship between generator's reactive power and load, by finding a sensitivity matrix that relates the reactive power output of a generator to a load.…”

Section: Chapter 1 Introductionmentioning

confidence: 99%

Secondary Voltage Control using Singular Value Decomposition by Discovering Community Structures in Power Networks

Iqbal¹

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Voltage and Frequency control are the two fundamental control problems in power systems. Unlike frequency control, voltage control is complicated by the fact that reactive power can't travel far distances from its source of generation. Due to this distributed nature of reactive power, voltage control is usually performed in decentralized manner. Typically, voltage control problem is divided into a three-level hierarchical structure namely primary,

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A new approach for voltage control area identification based on reactive power sensitivities

Cited by 8 publications

References 12 publications

Voltage Control Areas in Transmission Systems with Distributed Generation

Voltage Control Areas in Transmission Systems with Distributed Generation

Stochastic optimal reactive power reserve dispatch considering voltage control areas

Secondary Voltage Control using Singular Value Decomposition by Discovering Community Structures in Power Networks

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