Over Voltages in Power System

EE 751 · Chapter 3

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8
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46

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3.

Over Voltages in Power System

3.2

Temporary Over Voltage ; Unsymmetrical Faults in the System, High Capacitance of Long EHV Lines, Ferro-Resonance, Load Rejection, Effective Grounding, Shunt Compensations

12 questions
  1. 2071 Bhadra2071 Bhadra2070 MaghChapter 3: Over Voltages in Power System3.2 Temporary Over Voltage ; Unsymmetrical Faults in the System, High Capacitance of Long EHV Lines, Ferro-Resonance, Load Rejection, Effective Grounding, Shunt Compensations

    Starting with the mathematical expression given below. Justify that the voltage at the receiving end of a lossless line of 50 Hz operating frequency becomes infinity when the length of line is 1500 km at no-load condition. [The mathematical expression referred to in the question was not transcribed in the source docx.]

    ASK ON:ChatGPTClaudeAnswers · -8 marks Asked 3×
  2. 2079 Jestha2070 BhadraChapter 3: Over Voltages in Power System3.2 Temporary Over Voltage ; Unsymmetrical Faults in the System, High Capacitance of Long EHV Lines, Ferro-Resonance, Load Rejection, Effective Grounding, Shunt Compensations

    Explain in brief the effect of load rejection in power system.

    ASK ON:ChatGPTClaudeAnswers · -4 marks Asked 2×
  3. 2070 MaghChapter 3: Over Voltages in Power System3.2 Temporary Over Voltage ; Unsymmetrical Faults in the System, High Capacitance of Long EHV Lines, Ferro-Resonance, Load Rejection, Effective Grounding, Shunt Compensations

    With a mathematical justification show that charging reactive power supplied by the source per phase for a transmission line at no load is given by: [Expression not transcribed in the source docx.] where l is inductance per unit length; c is the capacitance per unit length L is length of line $\lambda$ is wave length

    ASK ON:ChatGPTClaudeAnswers · -8 marks Asked 1×
3.3

Switching Over Voltages; Switching Surge Ratio, Energizing an Unloaded Transmission Line, De-Energizing the Transmission Line, Interruption of Capacitive Current by Circuit Breaker, Current Chopping by Circuit Breaker, Ferro Resonance, Countermeasure to Reduce Switching Over Voltages

15 questions
  1. 2079 Chaitra2074 MaghChapter 3: Over Voltages in Power System3.3 Switching Over Voltages; Switching Surge Ratio, Energizing an Unloaded Transmission Line, De-Energizing the Transmission Line, Interruption of Capacitive Current by Circuit Breaker, Current Chopping by Circuit Breaker, Ferro Resonance, Countermeasure to Reduce Switching Over Voltages
    Click to unlock premiumSee the full question with Premium — NPR 149, 25% off
    ASK ON:ChatGPTClaude8 marks Asked 2×
  2. 2079 Jestha2074 BhadraChapter 3: Over Voltages in Power System3.3 Switching Over Voltages; Switching Surge Ratio, Energizing an Unloaded Transmission Line, De-Energizing the Transmission Line, Interruption of Capacitive Current by Circuit Breaker, Current Chopping by Circuit Breaker, Ferro Resonance, Countermeasure to Reduce Switching Over Voltages
    Click to unlock premiumSee the full question with Premium — NPR 149, 25% off
    ASK ON:ChatGPTClaude6 / 8 marks Asked 2×
  4. 2075 Bhadra2070 MaghChapter 3: Over Voltages in Power System3.3 Switching Over Voltages; Switching Surge Ratio, Energizing an Unloaded Transmission Line, De-Energizing the Transmission Line, Interruption of Capacitive Current by Circuit Breaker, Current Chopping by Circuit Breaker, Ferro Resonance, Countermeasure to Reduce Switching Over Voltages
    Click to unlock premiumSee the full question with Premium — NPR 149, 25% off
    ASK ON:ChatGPTClaude8 marks Asked 2×
  7. 2071 Bhadra2071 BhadraChapter 3: Over Voltages in Power System3.3 Switching Over Voltages; Switching Surge Ratio, Energizing an Unloaded Transmission Line, De-Energizing the Transmission Line, Interruption of Capacitive Current by Circuit Breaker, Current Chopping by Circuit Breaker, Ferro Resonance, Countermeasure to Reduce Switching Over Voltages
    Click to unlock premiumSee the full question with Premium — NPR 149, 25% off
    ASK ON:ChatGPTClaude8 marks Asked 2×
3.4

Lightning Over Voltages; Lightning Phenomena, Direct and Indirect Lightning Strokes, Effect of Ground Wire and Tower Footing Resistance in Lightning Over Voltages

3 questions
3.5

Protection Principle Against Lightning, Lightning and Surge Arresters, Earth Wire, Grounding Mast

16 questions
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