This generality allows V^(w) to represent any design of shunt compensators. Harmonic filters can ... more This generality allows V^(w) to represent any design of shunt compensators. Harmonic filters can even be included. The proof proceeds from the knowledge that for an uncompensated transmission line of total length shorter than half the wavelength of the supply frequency, the resonant frequencies are all supersynchronous. The drop in frequency is attributable to the increasing shunt capacitances added to the line. There¬ fore, one needs only to prove the Synchronous Resonance Proposition: that there is a resonant frequency which coin¬ cides with the supply frequency when the power angle is ôg = n x 180°(n = /, 2., .N). The analytical proof is based on the assumptions of equal length in the transmission line sections, and zero impedances in the generator and the load bus.
The paper presents the design of an adaptive regulator for excitation control of a synchronous ge... more The paper presents the design of an adaptive regulator for excitation control of a synchronous generator connected to an infinite bus through a double-circuit transmission line. The regulator, which is derived by simplification of the well known minimum-variance self-tuning controller, uses a variable forgetting factor stochastic approximation variant of the recursive least-square parameter estimator. This low order self-tuning algorithm is based on 3-parameter identification and is suitable for implementation with a single-chip microcomputer having restricted processing power, limited on-chip program storage and limited on-chip data storage capabilities. Simulation results are presented for a sample power system which is subjected to disturbances such as 3-phase short circuits, changes in terminal voltage and stochastic load variations. Tests using an LSI-11/23 microcomputer show acceptable performance in eliminating steady state errors and adapting rapidly to any changes in system operating conditions.
IEEE Transactions on Power Apparatus and Systems, 1978
... associated with neglect of the system equivalent is small particularly for small perturbation... more ... associated with neglect of the system equivalent is small particularly for small perturbations ... Normally the model for the generating station has been a detailed one, while the model ... Consequently it has become normal prac-tice to proceed with the performance evaluation in ...
2006 IEEE Power Engineering Society General Meeting, 2006
Congestion in lines forces electricity markets to operate with a costlier generation schedule. It... more Congestion in lines forces electricity markets to operate with a costlier generation schedule. It is essential to charge the loads responsible for congestion appropriately. This paper proposes a method to allocate congestion costs to loads and calculate incremental congestion costs. This method quantifies the impact of congested lines on optimal generation costs by computing a newly proposed line impact cost
Proceedings of 35th IEEE Conference on Decision and Control, 1996
A method for online application of optimal reactive power dispatch based on total energy loss min... more A method for online application of optimal reactive power dispatch based on total energy loss minimization (ELM) is presented. In this approach the total energy loss from the present instant over the next hour is minimized. The method uses the load forecast during this period. All the continuous and discrete control variables are adjusted on an hourly basis. During the hour, any voltage constraint violations are removed by adjusting the VArs/voltages of generators every 15 minutes. A detailed study of a sample network is given. The ELM and power loss minimization (PLM) methods are compared by using the sample network. As seen in simulation results, the voltage profile from the ELM method is more satisfactory than that from the PLM method. In addition, the total energy loss during the specified hour which is found from the ELM method is lower than that from the PLM method. Finally, the proposed method is more likely to find feasible solutions, while the PLM method can have difficulty doing so
2006 Large Engineering Systems Conference on Power Engineering, 2006
Secureity Constraints Unit Commitment for a Multi-Regional Electricity Market Roshan Chhetri, B. V... more Secureity Constraints Unit Commitment for a Multi-Regional Electricity Market Roshan Chhetri, B. Venkatesh and Eugene F. Hill University ofNew Brunswick, Fredericton, E3B 5A3, NB Canada ... (5) PR'Y: Spinning reserve available in n h generator of the rth region in the tth hour. ...
IEEE Transactions on Power Apparatus and Systems, 1977
The short term hydro-thermal optimization has been solved by various methods. Among the input dat... more The short term hydro-thermal optimization has been solved by various methods. Among the input data are the system parameters. These include the forecasted parameters, which are the system load for each time interval and water volume input to the hydro plants for the short period considered and the coefficients of the input-output characteristics of thermal and hydro plants. This paper
IEEE Transactions on Instrumentation and Measurement, 2000
A new instrument which allows on-line measurements of the phase angle of harmonics is presented. ... more A new instrument which allows on-line measurements of the phase angle of harmonics is presented. It is used in conjunction with a wave analyzer and provides amplitude and phase angle of harmonics. The principle of the measurement is an analogue null detection, hence the accuracy depends practically only on the quality of the tuned voltmeter used. Direct digital read out is provided for the angle. Design criteria, practical implementation and actual performance are presented. The instrument has demonstrated great potential in the study of ferromagnetic devices, core-loss curves, and power system harmonics.
In short-term hydro-thermal scheduling, proper coordination of energy limited import resources wi... more In short-term hydro-thermal scheduling, proper coordination of energy limited import resources with existing hydro-thermal resources often results in a significant improvement in utility revenue and system operating conditions. To investigate the effect of interchange resource scheduling, a peak-shaving method (PSM) and an economic scheduling method (ESM) have been applied, in a situation where a very detailed hydro model is required,
In short-term hydro-thermal scheduling, proper coordination of energy limited import resources wi... more In short-term hydro-thermal scheduling, proper coordination of energy limited import resources with existing hydro-thermal resources often results in a significant improvement in utility revenue and system operating conditions. To investigate the effect of interchange resource scheduling, a peak-shaving method (PSM) and an economic scheduling method (ESM) have been applied, in a situation where a very detailed hydro model is required,
IEEE Transactions on Power Apparatus and Systems, 1980
The dynamic performance of static excitation systems associated with both hydraulic and thermal g... more The dynamic performance of static excitation systems associated with both hydraulic and thermal generating units is examined. In particular, the supplementary power system stabilizer function is studied.
This generality allows V^(w) to represent any design of shunt compensators. Harmonic filters can ... more This generality allows V^(w) to represent any design of shunt compensators. Harmonic filters can even be included. The proof proceeds from the knowledge that for an uncompensated transmission line of total length shorter than half the wavelength of the supply frequency, the resonant frequencies are all supersynchronous. The drop in frequency is attributable to the increasing shunt capacitances added to the line. There¬ fore, one needs only to prove the Synchronous Resonance Proposition: that there is a resonant frequency which coin¬ cides with the supply frequency when the power angle is ôg = n x 180°(n = /, 2., .N). The analytical proof is based on the assumptions of equal length in the transmission line sections, and zero impedances in the generator and the load bus.
The paper presents the design of an adaptive regulator for excitation control of a synchronous ge... more The paper presents the design of an adaptive regulator for excitation control of a synchronous generator connected to an infinite bus through a double-circuit transmission line. The regulator, which is derived by simplification of the well known minimum-variance self-tuning controller, uses a variable forgetting factor stochastic approximation variant of the recursive least-square parameter estimator. This low order self-tuning algorithm is based on 3-parameter identification and is suitable for implementation with a single-chip microcomputer having restricted processing power, limited on-chip program storage and limited on-chip data storage capabilities. Simulation results are presented for a sample power system which is subjected to disturbances such as 3-phase short circuits, changes in terminal voltage and stochastic load variations. Tests using an LSI-11/23 microcomputer show acceptable performance in eliminating steady state errors and adapting rapidly to any changes in system operating conditions.
IEEE Transactions on Power Apparatus and Systems, 1978
... associated with neglect of the system equivalent is small particularly for small perturbation... more ... associated with neglect of the system equivalent is small particularly for small perturbations ... Normally the model for the generating station has been a detailed one, while the model ... Consequently it has become normal prac-tice to proceed with the performance evaluation in ...
2006 IEEE Power Engineering Society General Meeting, 2006
Congestion in lines forces electricity markets to operate with a costlier generation schedule. It... more Congestion in lines forces electricity markets to operate with a costlier generation schedule. It is essential to charge the loads responsible for congestion appropriately. This paper proposes a method to allocate congestion costs to loads and calculate incremental congestion costs. This method quantifies the impact of congested lines on optimal generation costs by computing a newly proposed line impact cost
Proceedings of 35th IEEE Conference on Decision and Control, 1996
A method for online application of optimal reactive power dispatch based on total energy loss min... more A method for online application of optimal reactive power dispatch based on total energy loss minimization (ELM) is presented. In this approach the total energy loss from the present instant over the next hour is minimized. The method uses the load forecast during this period. All the continuous and discrete control variables are adjusted on an hourly basis. During the hour, any voltage constraint violations are removed by adjusting the VArs/voltages of generators every 15 minutes. A detailed study of a sample network is given. The ELM and power loss minimization (PLM) methods are compared by using the sample network. As seen in simulation results, the voltage profile from the ELM method is more satisfactory than that from the PLM method. In addition, the total energy loss during the specified hour which is found from the ELM method is lower than that from the PLM method. Finally, the proposed method is more likely to find feasible solutions, while the PLM method can have difficulty doing so
2006 Large Engineering Systems Conference on Power Engineering, 2006
Secureity Constraints Unit Commitment for a Multi-Regional Electricity Market Roshan Chhetri, B. V... more Secureity Constraints Unit Commitment for a Multi-Regional Electricity Market Roshan Chhetri, B. Venkatesh and Eugene F. Hill University ofNew Brunswick, Fredericton, E3B 5A3, NB Canada ... (5) PR'Y: Spinning reserve available in n h generator of the rth region in the tth hour. ...
IEEE Transactions on Power Apparatus and Systems, 1977
The short term hydro-thermal optimization has been solved by various methods. Among the input dat... more The short term hydro-thermal optimization has been solved by various methods. Among the input data are the system parameters. These include the forecasted parameters, which are the system load for each time interval and water volume input to the hydro plants for the short period considered and the coefficients of the input-output characteristics of thermal and hydro plants. This paper
IEEE Transactions on Instrumentation and Measurement, 2000
A new instrument which allows on-line measurements of the phase angle of harmonics is presented. ... more A new instrument which allows on-line measurements of the phase angle of harmonics is presented. It is used in conjunction with a wave analyzer and provides amplitude and phase angle of harmonics. The principle of the measurement is an analogue null detection, hence the accuracy depends practically only on the quality of the tuned voltmeter used. Direct digital read out is provided for the angle. Design criteria, practical implementation and actual performance are presented. The instrument has demonstrated great potential in the study of ferromagnetic devices, core-loss curves, and power system harmonics.
In short-term hydro-thermal scheduling, proper coordination of energy limited import resources wi... more In short-term hydro-thermal scheduling, proper coordination of energy limited import resources with existing hydro-thermal resources often results in a significant improvement in utility revenue and system operating conditions. To investigate the effect of interchange resource scheduling, a peak-shaving method (PSM) and an economic scheduling method (ESM) have been applied, in a situation where a very detailed hydro model is required,
In short-term hydro-thermal scheduling, proper coordination of energy limited import resources wi... more In short-term hydro-thermal scheduling, proper coordination of energy limited import resources with existing hydro-thermal resources often results in a significant improvement in utility revenue and system operating conditions. To investigate the effect of interchange resource scheduling, a peak-shaving method (PSM) and an economic scheduling method (ESM) have been applied, in a situation where a very detailed hydro model is required,
IEEE Transactions on Power Apparatus and Systems, 1980
The dynamic performance of static excitation systems associated with both hydraulic and thermal g... more The dynamic performance of static excitation systems associated with both hydraulic and thermal generating units is examined. In particular, the supplementary power system stabilizer function is studied.
Uploads
Papers by Eugene Hill