Sample interview questions: Can you explain your knowledge of electrical system power factor optimization and reactive power compensation?
Sample answer:
Electrical System Power Factor Optimization involves improving the efficiency of electrical systems by minimizing reactive power and maximizing real power. A low power factor indicates excessive reactive power, which can overload transmission lines, increase energy consumption, and incur penalties from utility companies.
Reactive Power Compensation aims to address this issue by installing devices that supply or absorb reactive power as needed. By compensating for reactive power, the power factor can be improved, reducing energy losses and operating costs.
Strategies for Power Factor Optimization:
- Capacitor Banks: Capacitors generate reactive power leading the voltage, offsetting the inductive reactance of loads.
- Reactor Banks: Reactors introduce inductive reactance, counteracting the capacitive reactance of certain loads.
- Synchronous Condensers: Rotary machines that can generate or … Read full answer
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