Active power control for capacitive divider tapping method
- Nicolae, Dan-Valentin, Jimoh, Adisa A., Britten, Anton C.
- Authors: Nicolae, Dan-Valentin , Jimoh, Adisa A. , Britten, Anton C.
- Date: 2006
- Subjects: Power systems , Captive divider systems , Tapping electric power
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/22404 , uj:16197 , ISSN: 1-4244-0121-6 , Citation: Nicolae, D.V., Jimoh, A.A. & Britten, A.C. 2006. Active power control for capacitive divider tapping method. EPE-PEMC, 12th International Power Electronics and Motion Control, 30 August-1 September, 2006, Portorož, Slovenia.
- Description: Abstract: Capacitive divider systems for tapping electric power from high voltage transmission lines are known to exhibit certain detrimental problems of stability, sub-resonance harmonic oscillations, and ferroresonance when coupled with non-linear loads. On the other hand, they can improve reactive power flow, power factor and contribute to improved harmonic filtration of the larger power system. This paper, therefore, proposes a controlled power flow conditioner as an essential integral component of a capacitive divider system to control power transfer between the high voltage transmission line, capacitive divider system, and the load. The ultimate objective of this conditioner is to mitigate or minimize the attendant problems associated with coupling the system to the load, and optimize the derivable benefits to the larger network.
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- Authors: Nicolae, Dan-Valentin , Jimoh, Adisa A. , Britten, Anton C.
- Date: 2006
- Subjects: Power systems , Captive divider systems , Tapping electric power
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/22404 , uj:16197 , ISSN: 1-4244-0121-6 , Citation: Nicolae, D.V., Jimoh, A.A. & Britten, A.C. 2006. Active power control for capacitive divider tapping method. EPE-PEMC, 12th International Power Electronics and Motion Control, 30 August-1 September, 2006, Portorož, Slovenia.
- Description: Abstract: Capacitive divider systems for tapping electric power from high voltage transmission lines are known to exhibit certain detrimental problems of stability, sub-resonance harmonic oscillations, and ferroresonance when coupled with non-linear loads. On the other hand, they can improve reactive power flow, power factor and contribute to improved harmonic filtration of the larger power system. This paper, therefore, proposes a controlled power flow conditioner as an essential integral component of a capacitive divider system to control power transfer between the high voltage transmission line, capacitive divider system, and the load. The ultimate objective of this conditioner is to mitigate or minimize the attendant problems associated with coupling the system to the load, and optimize the derivable benefits to the larger network.
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A study of improving the power factor of a three-phase induction motor using a static switched capacitor
- Jimoh, Adisa A., Nicolae, Dan-Valentin
- Authors: Jimoh, Adisa A. , Nicolae, Dan-Valentin
- Date: 2006
- Subjects: Three-phase machines , Induction motors , Reactive compensation , Power factor correction
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/22367 , uj:16193 , ISSN: 1-4244-0121-6 , Citation: Jimoh, A.A. & Nicolae, D.V. 2006. A study of improving the power factor of a three-phase induction motor using a static switched capacitor. EPE-PEMC, 12th International Power Electronics and Motion Control, September, 2006, Portorož, Slovenia.
- Description: Abstract: In this paper a static switched capacitor with an auxiliary three-phase stator winding, which is only magnetically coupled to the stator main winding, is explored for improving the starting and operating power factor of a three-phase induction motor. The scheme improves the power factor of the motor without compromising significantly on other performances. Important advantages of the scheme include preventing harmonics in the line current, and eliminating regeneration possibility as well as preventing high inrush currents at starting.
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- Authors: Jimoh, Adisa A. , Nicolae, Dan-Valentin
- Date: 2006
- Subjects: Three-phase machines , Induction motors , Reactive compensation , Power factor correction
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/22367 , uj:16193 , ISSN: 1-4244-0121-6 , Citation: Jimoh, A.A. & Nicolae, D.V. 2006. A study of improving the power factor of a three-phase induction motor using a static switched capacitor. EPE-PEMC, 12th International Power Electronics and Motion Control, September, 2006, Portorož, Slovenia.
- Description: Abstract: In this paper a static switched capacitor with an auxiliary three-phase stator winding, which is only magnetically coupled to the stator main winding, is explored for improving the starting and operating power factor of a three-phase induction motor. The scheme improves the power factor of the motor without compromising significantly on other performances. Important advantages of the scheme include preventing harmonics in the line current, and eliminating regeneration possibility as well as preventing high inrush currents at starting.
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LV and MV distribution networks reconfiguration for minimum losses
- Siti, Willy M., Nicolae, Dan-Valentin, Jimoh, Adisa A.
- Authors: Siti, Willy M. , Nicolae, Dan-Valentin , Jimoh, Adisa A.
- Date: 2006
- Subjects: Distribution networks , Electricity supply
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/22442 , uj:16202 , ISSN: 1-4244-0121-6 , Citation: Siti, W.M., Nicolae, D.V. & Jimoh, A.A. 2006. LV and MV distribution networks reconfiguration for minimum losses. EPE-PEMC, 12th International Power Electronics and Motion Control, 30 August-1 September, 2006, Portorož, Slovenia.
- Description: Abstract: The reconfiguration of the distribution network feeders can be defined as the restructuring of the feeders through the changing of the open/close states of the sectionalizing and tie switches. This creation of a new distribution network topology is normally required to improve the performance of the network, and thus sometimes the efficiency of the electricity supply. For optimum loss reduction, feeder reconfiguration is often considered as an option. This, however, requires the implementation of an appropriate switching control strategy. It would be desirable for the switching to be automatic, that is to follow the connected load situation of the feeder. The proposed optimal reconfiguration of the phase balancing using the heuristic method proves to be robust compared to neural network method, to turn ON and OFF the different switches, allowing the three phases supply of the transformer to the end-users to be balanced. This paper presents the application examples of the proposed method using the real data.
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- Authors: Siti, Willy M. , Nicolae, Dan-Valentin , Jimoh, Adisa A.
- Date: 2006
- Subjects: Distribution networks , Electricity supply
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/22442 , uj:16202 , ISSN: 1-4244-0121-6 , Citation: Siti, W.M., Nicolae, D.V. & Jimoh, A.A. 2006. LV and MV distribution networks reconfiguration for minimum losses. EPE-PEMC, 12th International Power Electronics and Motion Control, 30 August-1 September, 2006, Portorož, Slovenia.
- Description: Abstract: The reconfiguration of the distribution network feeders can be defined as the restructuring of the feeders through the changing of the open/close states of the sectionalizing and tie switches. This creation of a new distribution network topology is normally required to improve the performance of the network, and thus sometimes the efficiency of the electricity supply. For optimum loss reduction, feeder reconfiguration is often considered as an option. This, however, requires the implementation of an appropriate switching control strategy. It would be desirable for the switching to be automatic, that is to follow the connected load situation of the feeder. The proposed optimal reconfiguration of the phase balancing using the heuristic method proves to be robust compared to neural network method, to turn ON and OFF the different switches, allowing the three phases supply of the transformer to the end-users to be balanced. This paper presents the application examples of the proposed method using the real data.
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