Abstract
The current work handles Automatic Generation Control (AGC) of an interconnected two area hydro-hydro system. The proposed system is integrated with conventional Proportional Integral (PI) as well as Fuzzy Logic Controller (FLC). Since, the conventional PI controller does not offer sufficient control performance. Thus, non-linearities such as the Generation Rate Constraint (GRC) and Governor Dead Band (GDB) are included in the system in order to overcome this drawback with employing Fuzzy Logic Controller (FLC) in the system. The results reported the time domain simulation that used to study the performance, when 1% step load disturbance is given in either area of the system. Furthermore, the conventional PI controller simulation results are compared to fuzzy logic controller. The simulation results depicted that the FLC achieved superior control performance.
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Abbreviations
- Δ:
-
Deviation
- i:
-
Subscript referred to area (1, 2)
- f:
-
Nominal system frequency
- Kpi:
-
Gain constant of generator
- Tpi:
-
Time constant of a generator
- Pri:
-
Rated area power
- T1, T3:
-
Time constants of hydro governor
- T2:
-
Mechanical governor reset time constant
- Tw:
-
Water starting time
- Kdc:
-
Gain associated with dc link
- Tdc:
-
Time constant of dc link
- T12:
-
Synchronizing coefficient
- Ptie:
-
Tie line power
- Pdi:
-
Load disturbance
- Ri:
-
Governor speed regulation parameter
- Bi:
-
Frequency bias constant
- KP:
-
Proportional controller gain
- Ki:
-
Integral controller gain
- a12:
-
Pr1/Pr2
- ACE:
-
Area Control Error
- LFC:
-
Load Frequency Control
- J:
-
Cost index
- T:
-
Sampling time period
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Jagatheesan, K., Anand, B., Dey, N., Ashour, A.S., Balas, V.E. (2018). Load Frequency Control of Hydro-Hydro System with Fuzzy Logic Controller Considering Non-linearity. In: Zadeh, L., Yager, R., Shahbazova, S., Reformat, M., Kreinovich, V. (eds) Recent Developments and the New Direction in Soft-Computing Foundations and Applications. Studies in Fuzziness and Soft Computing, vol 361. Springer, Cham. https://doi.org/10.1007/978-3-319-75408-6_24
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