Volt∕VAr control in distribution systems using a time-interval based approach

Hu, Zhijian; Wang, X.; Chen, Haoyong; Taylor, Gareth

doi:10.1049/ip-gtd:20030562

Cited by 148 publications

(98 citation statements)

References 4 publications

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“…Recently, most of them have focused on an automated remote dispatch either by using one-day-ahead daily dispatch schedules or real-time control [7]. The two method mentioned above can be applied to a smart grid which is a future power system combined with IT technology.…”

Section: Introductionmentioning

confidence: 99%

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Coordinated Voltage and Reactive Power Control Strategy with Distributed Generator for Improving the Operational Efficiency

Jeong¹,

Baek²,

Park³

2013

Journal of Electrical Engineering and Technology

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-This study proposes a voltage and reactive coordinative control strategy with distributed generator (DG) in a distribution power system. The aim is to determine the optimum dispatch schedules for an on-load tap changer (OLTC), distributed generator settings and all shunt capacitor switching on the load and DG generation profile in a day. The proposed method minimizes the real power losses and improves the voltage profile using squared deviations of bus voltages. The results indicate that the proposed method reduces the real losses and voltage fluctuations and improve receiving power factor. This paper proposes coordinated voltage and reactive power control methods that adjust optimal control values of capacitor banks, OLTC, and the AVR of DGs by using a voltage sensitivity factor (VSF) and dynamic programming (DP) with branch-and-bound (B&B) method. To avoid the computational burden, we try to limit the possible states to 24 stages by using a flexible searching space at each stage. Finally, we will show the effectiveness of the proposed method by using operational cost of real power losses and voltage deviation factor as evaluation index for a whole day in a power system with distributed generators.

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Section: Introductionmentioning

confidence: 99%

“…However, to find the optimal schedule of more controllers requires a very large search space that is computationally time-consuming [7]. To reduce the computational burden, some techniques should be applied to the algorithm.…”

Section: Introductionmentioning

confidence: 99%

Coordinated Voltage and Reactive Power Control Strategy with Distributed Generator for Improving the Operational Efficiency

Jeong¹,

Baek²,

Park³

2013

Journal of Electrical Engineering and Technology

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“…In Refs. [5][6][7][8][9][10], those ULTC and capacitor (or step voltage regulator) control strategies are discussed which minimize the main transformer's secondary voltage deviation and reactive power based on the primary bus voltage and forecasted feeder load. However, it is not easy to guarantee the effectiveness of the obtained hourly strategies from the forecasted load.…”

Section: Introductionmentioning

confidence: 99%

The On-Line Voltage Management and Control Solution of Distribution Systems Based on the Pattern Recognition Method

Ko¹

2009

Journal of Electrical Engineering and Technology

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-This paper proposes an on-line voltage management and control solution for a distribution system which can improve the efficiency and accuracy of existing off-line work by collecting customer voltage on-line as well as the voltage compensation capability of the existing ULTC (Under Load Tap Changer) operation and control strategy by controlling the ULTC tap based on pattern clustering and recognition. The proposed solution consists of an ADVMD (Advanced Digital Voltage Management Device), a VMS (Voltage Management Solution) and an OLDUC (On-Line Digital ULTC Controller). An on-line voltage management emulator based on multi-thread programming and the shared memory method is developed to emulate on-line voltage management and digital ULTC control methodology based on the on-line collection of the customer's voltage. In addition, using this emulator, the effectiveness of the proposed pattern clustering and recognition based ULTC control strategy is proven for the worst voltage environments for three days.

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“…al. [11] mostraram uma estratégia para controle off-line de tensão e potência reativa em sistemas de distribuição com o objetivo de determinar o despacho programado nas operações de chaveamento de capacitores e comutação de tap conforme a previsão de carga para o próximo dia. Na estratégia de controle V/VAr, estudado por esses pesquisadores, busca-se a coordenação ótima dos comutadores de tap e banco de capacitores conectados ao barramento do secundário da subestação e também instalados ao longo do alimentador.…”

Section: Estratégias De Controle De Tensão Off-lineunclassified

“…As simulações indicam que o método produz uma melhoria da qualidade do nível de tensão, reduzindo as perdas de potência e as operações de chaveamento dos dispositivos [11].…”

Section: Estratégias De Controle De Tensão Off-lineunclassified

Controle fuzzy para melhoria do perfil de tensão em sistemas de distribuição de energia elétrica

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Volt∕VAr control in distribution systems using a time-interval based approach

Cited by 148 publications

References 4 publications

Coordinated Voltage and Reactive Power Control Strategy with Distributed Generator for Improving the Operational Efficiency

Coordinated Voltage and Reactive Power Control Strategy with Distributed Generator for Improving the Operational Efficiency

The On-Line Voltage Management and Control Solution of Distribution Systems Based on the Pattern Recognition Method

Controle fuzzy para melhoria do perfil de tensão em sistemas de distribuição de energia elétrica

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