Question

Typical values of time constants of a load frequency control system in case of thermal power generation system are related as (Tsg: speed governor, Tps: power system, Tt: turbine)

• A. \(T_{\text{sg}}<T_{\text{t}} \ll T_{\text{ps}}\)
• B. \(T_{\text{sg}}<T_{\text{ps}}<T_{\text{t}}\)
• C. \(T_{\text{sg}} = T_{\text{t}} = T_{\text{ps}}\)
• D. \(T_{\text{sg}}>T_{\text{ps}} \gg T_{\text{t}}\)

Hint:

Understanding time constants is key in designing control systems for stability and quick response.

Answer 1

The Correct Option is A

In thermal power systems:
- \(T_{\text{sg}}\) (speed governor) responds quickly
- \(T_{\text{t}}\) (turbine) is slower
- \(T_{\text{ps}}\) (power system dynamics) is the slowest So the relationship is: \(T_{\text{sg}}<T_{\text{t}} \ll T_{\text{ps}}\)