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Elements and Performance Criteria

1. Prepare to develop engineering solution for synchronous machine problems
   • Work health and safety (WHS)/occupational health and safety (OHS) processes and workplace procedures for a given work area are identified, obtained and applied
2. WHS/OHS risk control measures and workplace procedures in preparation for the work are followed
3. Scope of synchronous machine problem is determined from performance specifications and/or documentation and in consultation with relevant person/s
4. Activities are planned to meet scheduled timelines in consultation with others involved in the work
5. Effective strategies are formed to ensure solution development and implementation is carried out efficiently
6. Develop engineering solution
   • WHS/OHS risk control measures and workplace procedures for carrying out the work are followed
7. Synchronous machine construction, operation, characteristics and applications are applied to developing solutions to synchronous machine problems
8. Parameters, specifications and performance requirements for each machine problem are obtained in accordance with workplace procedures
9. Approaches to resolving synchronous machine problems are analysed to provide most effective solutions in accordance with relevant industry standards and workplace procedures
10. Unplanned events are dealt with safely and effectively in accordance with relevant industry standards and workplace procedures
11. Quality of work is monitored in accordance with relevant industry standards and workplace procedures
12. Implement engineering solution and complete documentation
    • Solutions to machine problems are tested to determine their effectiveness and modified as required
13. Adopted solutions are documented, including instruction for their implementation with risk control measures
14. Relevant person/s required to implement solutions to synchronous machine problems is coordinated in accordance with relevant industry standards and workplace procedures
15. Justification for solutions used to solve synchronous machine problems is documented in work/project records in accordance with relevant industry standards

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment. Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.
Developing engineering solutions must include the following:	at least four synchronous machine problems

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Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least one occasion and include:

understanding the extent of the machine problem forming effective strategies for solution development and implementation obtaining machine parameters, specifications and performance requirements appropriate to each problem testing and applying solutions to machine problems documenting instruction for implementation of solutions that incorporate risk control measure to be followed documenting justification of solutions implemented in accordance with professional standards dealing with unplanned events analysing approaches to solutions applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements, including using risk control measures applying synchronous machine construction operation characteristics and applications to developing solutions determining the scope of synchronous machine problem monitoring quality of work planning activities to meet timelines.

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Knowledge Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

synchronous machine diagnostics and engineering solutions for synchronous machine problems, including: alternating current (a.c.) generators – construction, types and cooling encompassing: construction of stator and rotor windings rotor construction (cylindrical and salient pole) advantages of rotating field construction excitation methods cooling methods prime movers a.c. generators – operating principles and characteristics encompassing: a.c. generator equivalent circuits (synchronous reactance and resistance components) tests – open circuit, short circuit and stator impedance voltage regulation, island generator’s terminal voltage load power factor determination of excitation voltage and load angle synchronising a.c. generators encompassing: conditions for synchronising (infinite bus) methods for synchronising (lamp methods and synchroscope) alternator load sharing, parallel operation a.c. generators power, torque and efficiency encompassing: power input, input torque and speed power losses output power, load power factor, rotor angle and pu power efficiency performance chart interpretation automatic voltage regulation (AVR) encompassing: need for AVRs features of AVRs effects of rotor inductance connections of AVRs operation of AVRs a.c. generator operational stability encompassing: power output, variance (VAR) effects, rotor angle and excitation control of VAR (on-load tap-changers (OLTC) transformers) voltage dependant nature of stability critical clearance angle of a.c. generator stability limits a.c. generator protection encompassing: restricted, unrestricted primary, back up and duplicated protection overcurrent, short circuit, differential, reverse power, load unbalance, rotor overload, loss-of-field, rotor earth fault, station earth-fault and under-frequency protection external fault protection induction generator encompassing: types operating principles and characteristics excitation methods losses and efficiency synchronising and paralleling three phase synchronous motors encompassing: construction – rotor, stator and windings excitation methods operating principles (equivalent circuits and synchronous impedance) hunting and stability limits power factor correction paralleling and synchronisation techniques starting methods braking methods problem-solving techniques relevant machine parameters, specifications and performance requirements relevant manufacturer specifications and operating instructions/manuals relevant job safety assessments or risk mitigation processes relevant WHS/OHS legislated requirements relevant workplace documentation relevant workplace quality, instructions, policies and procedures.

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