Capacitor Bank Balancing: Causes and Practical Levels of Unbalance

Panda, Namita; Pachpund, Santosh

doi:10.1109/mias.2022.3160991

IEEE Ind. Appl. Mag.

2022

DOI: 10.1109/mias.2022.3160991

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Capacitor Bank Balancing: Causes and Practical Levels of Unbalance

Namita Panda¹,

Santosh Pachpund²

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Cited by 2 publications

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On-Line Monitoring of Shunt Capacitor Bank Based on Relay Protection Device

2023

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In modern power systems, the installation of a shunt capacitor bank is one of the cheapest and most widely used methods for improving the voltage profile. One shunt capacitor bank is composed of mass capacitor units and have ground, ungrounded, delta, wye connections that make configuration of capacitor banks is various. In the case of long-term operation, the failure of a single capacitor unit of a capacitor bank is likely to cause uneven voltage, which will lead to the breakdown and burning of the whole group, resulting in huge losses. The relay protection device can detect the simultaneous voltage and current of the capacitor. By utilizing these data from the relay, the abnormal state of the shunt capacitor banks at the initial stage of the fault can be found through monitoring the slight change in capacitance. Timely and early maintenance and repair would avoid capacitor bank faults and potentially greater economic losses. Capacitor banks have different connection modes. For ungrounded wye-connected capacitor banks with an unknown neutral point voltage, the capacitance parameters of each branch cannot be calculated. A parameter symmetry based on the calculation method for capacitor parameters is proposed. For long-term monitoring and observation of the capacitor capacitance value, the fault state and abnormal state of the capacitor are identified based on statistical methods. The simulation established by PSCAD verified that a relay protection device can realized an effective monitoring of the early abnormal state of the capacitor bank.

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On-Line Monitoring of Shunt Capacitor Bank Based on Relay Protection Device

2023

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Abordagem Baseada Em Meta-Heurística Para Correção De Desbalanceamento De Corrente Em Banco De Capacitores

Muniz Galvão,

Gomes Figueira,

Florian

2024

RECIMA21

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Os bancos de capacitores são essenciais para a estabilidade e regulação de potência reativa em sistemas elétricos de alta tensão, mas sofrem com desbalanceamentos de corrente, causando sobrecargas e comprometendo a operação. Para mitigar esse problema, foi desenvolvida uma aplicação interativa baseada em uma meta-heurística de otimização, capaz de realizar permutações controladas de capacitores dentro das restrições físicas e operacionais. A solução reduziu significativamente a corrente de desbalanceamento, alcançando os limites desejados com eficiência e agilidade, tornando-se uma ferramenta prática para manutenção e uso em campo.

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Capacitor Bank Balancing: Causes and Practical Levels of Unbalance

Cited by 2 publications

References 4 publications

On-Line Monitoring of Shunt Capacitor Bank Based on Relay Protection Device

On-Line Monitoring of Shunt Capacitor Bank Based on Relay Protection Device

Abordagem Baseada Em Meta-Heurística Para Correção De Desbalanceamento De Corrente Em Banco De Capacitores

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