The exhaustive list of topics in Power Electronic Applications in Power Systems in which we provide Help with Homework Assignment and Help with Project is as follows:
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Load Balancing:
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Transmission line theory
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Use of Voltage source inverter (VSI) for reactive power support
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Mid-point series and shunt compensation and HVDC.
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Discussion on voltage profile at the point of common coupling (PCC)
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Need for load compensation
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Load balancing using passive elements.
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Limitations of load balancing using passive elements
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Use of VSI as a Var generator
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Indirect current controlled synchronous link converter Var Compensator (SLCVC).
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Various PWM techniques: Harmonic Elimination and space vector PWM techniques - Theory and implementation issues.
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Discussion on bi-directional power flow in VSI
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Use of VSI as active filter cum Var generator
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Current controlled SLCVC
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Strategy-1: Sensing the compensator current
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Strategy-2: Sensing the source current
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Use of two VSIs
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One as Var generator and another as active filter.
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Limitations of 2-level VSI
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Discussion on the need for the change in power circuit configuration of 2-level VSI for high power application
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Multi-level inverters.
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Principle of operation of 3-level and 4-level diode clamped multi-level inverters.
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Space vector representation of 3-level VSI
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Voltage control of 3-level inverter.
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Instantaneous reactive power theory
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Expression for active and reactive powers in terms of d-q components.
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Reactive power compensator using instantaneous reactive power theory
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Stationary to rotating frame transformation.
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Reference wave generation (hardware method)
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Harmonic oscillator
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Phase locked loop (PLL) Introduction on one cycle control
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Discussion on one cycle controlled Var generator and active filter.
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- Shunt Compensation:
- Methods of Var generation: Thyristor controlled reactor (TCR)
- Thyristor switched capacitor (TSC)
- Fixed capacitor-Thyristor controlled reactor (FC-TCR)
- STATCOM.
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Series Compensation:
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Comparison between series and shunt compensation.
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Various Equipment: GTO Controlled Series Capacitor (GCSC)
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Comparison of TCR and GCSC
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Thyristor Switched Series Capacitor (TSSC)
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Thyristor Controlled Series Capacitor (TCSC).
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Static Synchronous Series Compensator (SSSC)
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Modes of operation
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Voltage regulator and Phase Angle Regulator (PAR).
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Multi functional FACTS controller: Unified Power Flow Controller (UPFC)
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Control capabilities of UPFC
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2-port representation of UPFC.
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- HVDC:
- Various possible HVDC configurations
- Unipolar and bipolar links
- Components of HVDC system: Converter, transformer, smoothing reactor, harmonic filter.
- Reactive power support
- Operation of 6-pulse controlled rectifier in inverting mode of operation.
- Effect of source inductance
- Equivalent circuit representation of 6-pulse converter considering effect of source inductance.
- Operation of 12- pulse converter.
- Control of HVDC system
- Rectifier and inverter characteristics
- Mode stabilization
- Current control
- Voltage dependent current order limit
- Combined rectifier-inverter characteristics
- Valve blocking and by-passing
- Limitations HVDC system using line commutated converters
- Modern HVDC system - HVDC light.