Impact of Ferroresonance on protective relays in Manitoba Hydro 230 kV electrical network

“…New ferroresonance studies have been implemented in Manitoba hydro system to obtain other configurations vulnerable to ferroresonance in the network [9,12]. These arrangements comprise breaker phase failure, transformer-terminated double-circuit transmission line, and plant outage.…”

Section: Power Oscillation Due To Ferroresonance Examined In Manitobamentioning

confidence: 99%

“…Occurrence of ferroresonance causes misshaped waveform of magnitudes with different frequencies. It leads in power oscillation between two points with a certain frequency difference in the network [12]. Ferroresonance is typically damped by using several methods.…”

Section: Introductionmentioning

confidence: 99%

Power Oscillation Due to Ferroresonance and Subsynchronous Resonance

Rezaei¹

2019

Power System Stability

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Power oscillation occurs in electrical network due to variety of phenomena. Subsynchronous resonance (SSR) and ferroresonance are the phenomena that cause power oscillation of rotary systems. Ferroresonance is likely to occur due to traversing capacitance line of the system across nonlinear area of transformer saturation curve due to several configurations like breaker failure, voltage transformer connected to grading capacitor circuit breaker, line and plant outage, etc. It causes misshaping the waveforms and frequency difference between two points in the network. Frequency difference (Δf) results in oscillation of power with a swing frequency which is equal to Δf. During SSR, electrical energy is exchanged between generators and transmission systems below power frequency. It happens due to interaction of a series compensated transmission line with a generator. It results in oscillation in the shaft and power oscillation. In addition, SSR causes the magnitudes of voltage and current to increase. Increasing the voltage causes saturation of iron core of transformer or reactor and consequently occurrence of ferroresonance in the presence of series capacitance.

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“…The Ferroresonant state mentioned above has been completely explained in [8]; hence, the results of simulation are briefly explained as follow.…”

Section: B Ferroresonance In Case Of Changing Line Arrangementmentioning

confidence: 99%

“…The error value is controlled by PI controller to control the values of required susceptance (B SVS ). Then, non-linear TCR susceptance (B TCR ) is calculated based on B SVS according to equation (8). As it is shown in Figure. 8, in order to generate firing angle of TCR, B TCR is divided by Output susceptance of TCR inductor (B L ).…”

Section: B Mitigation Of Ferroresonance By Static Var Compensatormentioning

confidence: 99%

Mitigation of Ferroresonance By FACTS In Electrical Network

Rezaei¹

2017

ijeei

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Catastrophic circumstances and equipment failures continue to occur due to Ferroresonance even though this phenomenon has been extensively investigated since, many years ago. This study enhances mitigation of Ferroresonance by means of Flexible AC Transmission System. Static var compensator is used to suppress Ferroresonance along with controlling voltage and reactive power in the network. Manitoba Hydro 230 kV electrical network has experienced Ferroresonant states several times. In this paper, by means of PSCAD/EMTDC simulation software, Ferroresonant states are recognized and analyzed in Manitoba Hydro network. Ferroresonant states are classified in adequate modes by Ferroresonance detection tools. Power and control circuit of SVC is designed and Ferroresonant states are examined in presence of SVC.

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Impact of Ferroresonance on protective relays in Manitoba Hydro 230 kV electrical network

Cited by 16 publications

References 4 publications

Adaptive overcurrent protection against ferroresonance

Adaptive overcurrent protection against ferroresonance

Power Oscillation Due to Ferroresonance and Subsynchronous Resonance

Mitigation of Ferroresonance By FACTS In Electrical Network

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