Interarea Power System Oscillations Damping via AI-based Referential Integrity Variable-Structure Control
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M. A. Ebrahim
und
H. S. Ramadan
Abstract
The design of power system stabilizer (PSS) is load-dependent and needs continuous adjustment at each operating condition. This paper aims at introducing a robust non-fragile PSS for interconnected power systems. The proposed controller has the capability of adaptively tuning online its rule-base through a variable-structure direct adaptive control algorithm in order to rigorously attain the desired objectives. The PSS controller acts on damping the electromechanical modes of oscillations not only through a wide range of operating conditions but also in presence of different disturbances. Using MATLABTM-Simulink, simulation results significantly verify that the proposed controller provides favorable performance and efficiently contributes towards enhancing the system dynamic behavior when applied to the four machines two-area power system that mimics the typical system behavior in actual operation. The interaction between the variable-structure adaptive fuzzy-based power system stabilizer (VS-AFPSS) and the existed typical ones inside the interconnected power systems has been explicitly discussed. Compared to other conventional controllers, VS-AFPSS enables better damping characteristics to both local and inter-area oscillation modes considering different operating conditions and sever disturbances.
Appendix A
A.1 The generating unit is modeled by seven first-order nonlinear differential equations
Machine parameters in pu (The base power is 900 MVA):
A.2 The AVR parameters are
Multi-machine system parameters.
| Bus code p-q | Impedance Zpq in pu | Line charging y′pq/2 in pu |
|---|---|---|
| 1–2 | 0.02+j0.060 | 0.0+j0.015 |
| 2–5 | 0.06+j0.018 | 0.0+j0.020 |
| 5–6 | 0.08+j0.024 | 0.0+j0.020 |
| 6–4 | 0.06+j0.018 | 0.0+j0.020 |
| 4–3 | 0.02+j0.060 | 0.0+j0.015 |
The loads in MVA at the power system buses:
Nomenclature
- ed
Direct-axis e.m.f. (pu)
- eq
Quadrature-axis e.m.f. (pu)
- ef
Field e.m.f. (pu)
- fn
Nominal frequency (Hz)
- H
Machine inertia (s)
- id
Direct-axis current (pu)
- if
Field current (pu)
- ikd
Damper winding direct-axis current (pu)
- ikq
Damper winding quadrature-axis current (pu)
- iq
Quadrature-axis current (pu)
- Ka
Amplifier gain
- Kd
Damping factor
- Ke
Exciter gain
- Kf
Damping filter gain
- Kr
Transducer gain
- ra
Stator resistance (pu)
- rf
Field winding resistance (pu)
- rkd
Damper winding direct-axis resistance (pu)
- rkq
Damper winding quadrature-axis resistance (pu)
- τa
Amplifier time constant (s)
- τdo′
Direct-axis transient open-circuit time constant (s)
- τdo”
Direct-axis sub-transient open-circuit time constant (s)
- τe
Exciter time constant (s)
- Te
Electric torque (pu)
- τf
Damping filter time constant (s)
- Tm
Mechanical torque (pu)
- τqo′
Quadrature-axis transient open-circuit time constant (s)
- τqo”
Quadrature-axis sub-transient open-circuit time constant (s)
- τr
Transducer time constant (s)
- Xl
Leakage reactance (pu)
- Xd
Direct-axis synchronous reactance (pu)
- Xd′
Direct-axis transient reactance (pu)
- Xd”
Direct-axis sub-transient reactance (pu)
- Xq
Quadrature-axis synchronous reactance (pu)
- Xq′
Quadrature-axis transient reactance (pu)
- Xq”
Quadrature-axis sub-transient reactance (pu)
- Upss
Power system stabilizer supplementary signal
- Vref
Reference voltage (pu)
- Vt
Machine terminal voltage (pu)
- z
Damping ratio
- δ
Power angle (rad)
- λd
Direct-axis flux linkage (pu)
- λf
Field flux (pu)
- λkd
Damper winding direct-axis flux linkage (pu)
- λkq
Damper winding quadrature-axis flux linkage (pu)
- λq
Quadrature-axis flux linkage (pu)
- ω
Machine speed (pu)
- ω0
Synchronous speed (pu)
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©2016 by De Gruyter
Artikel in diesem Heft
- Frontmatter
- Maximum Energy Extraction Control for Wind Power Generation Systems Based on the Fuzzy Controller
- Interarea Power System Oscillations Damping via AI-based Referential Integrity Variable-Structure Control
- Optimal Design of MPPT Controllers for Grid Connected Photovoltaic Array System
- Feasibility Study of Grid Connected PV-Biomass Integrated Energy System in Egypt
- Dynamic Performance Comparison for MPPT-PV Systems using Hybrid Pspice/Matlab Simulation
- Experimental Voltage Stabilization of a Variable Speed Wind Turbine Driving Synchronous Generator using STATCOM based on Genetic Algorithm
- A Novel Technique for Maximum Power Point Tracking of a Photovoltaic Based on Sensing of Array Current Using Adaptive Neuro-Fuzzy Inference System (ANFIS)
- Application of Static Var Compensator (SVC) With PI Controller for Grid Integration of Wind Farm Using Harmony Search
- PI Passivity-Based Control for Maximum Power Extraction of a Wind Energy System with Guaranteed Stability Properties
- Dynamic Model and Control of a Photovoltaic Generation System using Energetic Macroscopic Representation
- Detecting of Multi Phase Inter Turn Short Circuit in the Five Permanent Magnet Synchronous Motor
- Power Factor Improvement for Pumping Stations using Capacitor Banks
Artikel in diesem Heft
- Frontmatter
- Maximum Energy Extraction Control for Wind Power Generation Systems Based on the Fuzzy Controller
- Interarea Power System Oscillations Damping via AI-based Referential Integrity Variable-Structure Control
- Optimal Design of MPPT Controllers for Grid Connected Photovoltaic Array System
- Feasibility Study of Grid Connected PV-Biomass Integrated Energy System in Egypt
- Dynamic Performance Comparison for MPPT-PV Systems using Hybrid Pspice/Matlab Simulation
- Experimental Voltage Stabilization of a Variable Speed Wind Turbine Driving Synchronous Generator using STATCOM based on Genetic Algorithm
- A Novel Technique for Maximum Power Point Tracking of a Photovoltaic Based on Sensing of Array Current Using Adaptive Neuro-Fuzzy Inference System (ANFIS)
- Application of Static Var Compensator (SVC) With PI Controller for Grid Integration of Wind Farm Using Harmony Search
- PI Passivity-Based Control for Maximum Power Extraction of a Wind Energy System with Guaranteed Stability Properties
- Dynamic Model and Control of a Photovoltaic Generation System using Energetic Macroscopic Representation
- Detecting of Multi Phase Inter Turn Short Circuit in the Five Permanent Magnet Synchronous Motor
- Power Factor Improvement for Pumping Stations using Capacitor Banks
