hư kháng
Definition
- Noun (Electrical Engineering):
- Reactive power: A component of apparent power in an alternating current (AC) electrical system that does not perform real work but is necessary for the operation of electromagnetic equipment like motors and transformers. It is measured in volt-amperes reactive (VAR).
- Wattless power: Power that oscillates between the source and the reactive components (inductors and capacitors) of a load, without being converted to useful energy like heat or light.
Usage Examples
- Noun:
- Hệ số công suất thấp cho thấy có nhiều hư kháng trong mạch. (A low power factor indicates a high amount of reactive power in the circuit.)
- Các tụ bù được lắp đặt để giảm hư kháng. (Compensation capacitors are installed to reduce reactive power.)
- Hư kháng có thể gây tổn thất trên đường dây truyền tải. (Reactive power can cause losses on transmission lines.)
Advanced Usage
"Công suất hư kháng": Reactive power (full term).
- Kỹ sư cần tính toán công suất hư kháng để thiết kế hệ thống hiệu quả. (The engineer needs to calculate the reactive power to design an efficient system.)
"Bù hư kháng": Reactive power compensation.
- Nhà máy đầu tư vào hệ thống bù hư kháng để tiết kiệm điện. (The factory invested in a reactive power compensation system to save electricity.)
Variants and Related Words
- Công suất biểu kiến (n): Apparent power. The combination of real power and reactive power, measured in volt-amperes (VA).
- Công suất thực (n): Real power / Active power. The component of power that performs actual work, measured in watts (W).
- Hệ số công suất (n): Power factor. The ratio of real power to apparent power.
Synonyms
- Reactive power: The standard technical term.
- Wattless power: Emphasizes that it does not produce real work.
- Imaginary power: A term sometimes used in electrical engineering contexts, relating to the complex power calculation.
Related Concepts
- Inductive load: A type of load (e.g., motor) that consumes reactive power.
- Capacitive load: A type of load (e.g., capacitor bank) that supplies reactive power.
- VAR compensation: The process of managing reactive power levels in a grid.