Localized Reactive Power Markets Using the Concept of Voltage Control Areas

Nobile, E.; Bose, Anjan; Bhattacharya, Kankar

doi:10.1109/tpwrs.2004.831656

Cited by 192 publications

(104 citation statements)

References 7 publications

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“…∂Q/∂V is part of the Jacobian matrix which appears during a load-flow computation following the Newton-Raphson method [22], [24]. In this approach, the electrical distance α ij , is calculated as the attenuation of voltage variations between two nodes and , given by…”

Section: ) Sensitivity Based Methodsmentioning

confidence: 99%

A Decentralized Multiagent-Based Voltage Control for Catastrophic Disturbances in a Power System

Islam

Muttaqi

Sutanto

2015

IEEE Trans. on Ind. Applicat.

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In this paper, a multiagent-based voltage and reactive power control in the case of a multiple contingency is presented. Incorporating the agent-based autonomous feature to the intelligence of the remote terminal units, the present power system control structure can be used to help in preventing system voltage collapse during catastrophic disturbances. The control algorithm is based on a decentralized architecture of intelligent agents and the determination of a local zone that can carry out quick countermeasures in a decentralized manner as a multiagent system (MAS) during an emergency situation. An adaptive determination of the local zones undergoing voltage collapse has been developed based on the electrical distances among the generators and loads. Once assigned, the elements of the Jacobian matrix can be used to determine the optimum actions that need to be carried out at each power system element (such as increasing the voltages of generators and load shedding) within the assigned local zone. The contract net protocol is used for agent interactions. Simulation results using the IEEE-57 bus system show that the proposed method can act quickly to respond to emergency conditions to ensure that voltage collapse can be avoided. This journal article is available at Research Online: http://ro.uow.edu.au/eispapers/4674 1 Abstract--In this paper, a multi-agent based voltage and reactive power control in the case of a multiple contingency is presented. Incorporating the agent based autonomous feature to the intelligence of the Remote Terminal Units (RTUs), the present power system control structure can be used to help in preventing system voltage collapse during catastrophic disturbances. The control algorithm is based on a decentralized architecture of intelligent agents and the determination of a local zone that can carry out quick countermeasures in a decentralized manner as a multi-agent system (MAS) during an emergency situation. An adaptive determination of the local zones undergoing voltage collapse has been developed based on the electrical distances among the generators and loads. Once assigned, the elements of the Jacobian matrix can be used to determine the optimum actions that need to be carried out at each power system element (such as increasing the voltages of generators and load shedding) within the assigned local zone. The contract-net-protocol (CNP) is used for agent interactions. Simulation results using IEEE-57 bus system show that the proposed method can act quickly to respond to emergency conditions to ensure that voltage collapse can be avoided.

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Section: ) Sensitivity Based Methodsmentioning

confidence: 99%

A Decentralized Multiagent-Based Voltage Control for Catastrophic Disturbances in a Power System

Islam

Muttaqi

Sutanto

2015

IEEE Trans. on Ind. Applicat.

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“…A reactive power market clearing method according to a multi-objective optimization has been presented in [32]. To alleviate market power, a zonal reactive power market has been proposed in [33]. According to the zonal reactive power market, Saraswat et al [34] have presented a day-ahead reactive power market clearing mechanism based on a multi-objective optimization model.…”

Section: State Of the Artmentioning

confidence: 99%

Coordinated Volt/Var Control in Distribution Systems with Distributed Generations Based on Joint Active and Reactive Powers Dispatch

Samimi

Kazemi

2016

Applied Sciences

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Abstract:One of the most significant control schemes in optimal operation of distribution networks is Volt/Var control (VVC). Owing to the radial structure of distribution systems and distribution lines with a small X/R ratio, the active power scheduling affects the VVC issue. A Distribution System Operator (DSO) procures its active and reactive power requirements from Distributed Generations (DGs) along with the wholesale electricity market. This paper proposes a new operational scheduling method based on a joint day-ahead active/reactive power market at the distribution level. To this end, based on the capability curve, a generic reactive power cost model for DGs is developed. The joint active/reactive power dispatch model presented in this paper motivates DGs to actively participate not only in the energy markets, but also in the VVC scheme through a competitive market. The proposed method which will be performed in an offline manner aims to optimally determine (i) the scheduled active and reactive power values of generation units; (ii) reactive power values of switched capacitor banks; and (iii) tap positions of transformers for the next day. The joint active/reactive power dispatch model for daily VVC is modeled in GAMS and solved with the DICOPT solver. Finally, the plausibility of the proposed scheduling framework is examined on a typical 22-bus distribution test network over a 24-h period.

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“…The respective attenuations can be derived from [M sVQ ] matrix by dividing the elements of each column by the diagonal term [13], [14]. Therefore, the matrix of attenuations, [μ sij ] among all the busses of the power system can be derived as shown in (02).…”

Section: Deriving Voltage Control Zones Of Dg In Distribution Sysmentioning

confidence: 99%

Online Coordinated Voltage Control in Distribution Systems Subjected to Structural Changes and DG Availability

Ranamuka

Agalgaonkar

Muttaqi

2015

IEEE Trans. Smart Grid

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The responses of multiple DG units and voltage regulating devices such as tap changers and capacitor banks for correcting the voltage may lead to operational conflicts and oscillatory transients, where distribution systems are subjected to network reconfiguration and changes in availability of the DG units. Therefore, coordinated voltage control is required to minimize control interactions while accounting for the impact of structural changes associated with the network. This paper proposes a strategy for coordinating the operation of multiple voltage regulating devices and DG units in medium voltage (MV) distribution systems, under structural changes and DG availability, for effective voltage control. The proposed strategy aids to minimize the operational conflicts by allowing the farthest voltage regulating device to operate first on a priority scheme designed based on the electrical-distance between voltage regulating devices and DG units, while maximizing the voltage support by the DG units. The proposed coordination scheme is designed to enact with an aid of a substation centered distribution management system (DMS) for online voltage control. The control actions of proposed coordination strategy are tested on a MV distribution system, derived from the state of New South Wales, Australia, through simulations, and results are reported. NOMENCLATURE OLTCOn-load tap changer SVRStep

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Localized Reactive Power Markets Using the Concept of Voltage Control Areas

Cited by 192 publications

References 7 publications

A Decentralized Multiagent-Based Voltage Control for Catastrophic Disturbances in a Power System

A Decentralized Multiagent-Based Voltage Control for Catastrophic Disturbances in a Power System

Coordinated Volt/Var Control in Distribution Systems with Distributed Generations Based on Joint Active and Reactive Powers Dispatch

Online Coordinated Voltage Control in Distribution Systems Subjected to Structural Changes and DG Availability

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