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Elements and Performance Criteria

  1. Plan for the control of a generation plant
  2. Carry out the control of a generation plant
  3. Complete the control of a generation plant

Required Skills

Essential Knowledge and Associated Skills EKAS This describes the essential skills and knowledge and their level required for this unit

Evidence shall show that knowledge has been acquired of controlling generating plant

All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies

KSTSOA Power systems generating plant control

KS01-TSO34A Power systems generating plant control

Evidence shall show an understanding of power systems generating plant control to an extent indicated by the following aspects

T Enterprise specific procedures and work practices relating to generating plant encompassing

Commonwealth StateTerritory and local government legislation Standards codes supply authority regulations and or enterprise requirements applicable to the procedures and work practices relating to generating plant

Requirements for the use of operational manuals system diagramsplans and drawings

Identify and interpret enterprise operating procedures

Techniques in the applying enterprise operating procedures

T Voltage control techniques encompassing

Conditions leading to voltage collapse

Effects on system of high and low voltage

Voltage control devices voltage regulators applied to generators and synchronous phase modifiers electromagnetic voltage regulators series and parallel capacitors OLTC transformers and static VAR compensators SVCs SVCs includes saturated reactor compensators thyristor controlled reactor compensators and combined systems

Production of harmonics and methods of harmonic control

Location of voltage control devices within the system

T Power flow control encompassing

Use of system components to control power flow patterns base load spinning reserve regulating machines rapid start plant phase shifting transformers and load shedding

Principles of automated control

Synchronising power

Relationship of power and frequency

Machine stabilisation techniques

System oscillations and stability damped and undamped oscillation relationship of fault clearance times and system stability critical clearance times

T Alternators operation and control encompassing

Constructional features of alternators weights lengths lengths cooling mediums cooling systems prime mover types prime mover attachment types of windings core arrangements

Principle of operation induction machines synchronous machines

Modes of operation island and infinite bus operation running up of prime movers loading the alternator requirements for synchronising methods of synchronising

Use of reactive capability diagram related diagram types current circle diagram performance chart capability diagram values represented per unit representation limits representation and meaning

Automatic voltage regulators need for voltage control required attributes of an AVR range response time constraints on AVR capability desirable attributes of an AVR power consumption compensation rotor stabilisation automatic changeover systems input and output requirements and components

Operation on an infinite bus definition of infinite bus powerangle dependence reactive flowvoltage dependence powerangle diagram effect of saliency transient conditions practical and theoretical stability limits voltage dependence of stability control of reactive flow using AVR and generator transformer tap changer

T Prime mover principles encompassing

Commonwealth StateTerritory and local government legislation supply authority regulations Standards codes and or enterprise requirements applicable to the prime movers

Requirements for the use of operational manuals system diagramsplans and drawings

Types characterizes and applications of energy sources and conversion systems wind steam turbine gas turbine diesel

Evidence Required

This provides essential advice for assessment of the competency standard unit and must be read in conjunction with the Performance Criteria and the Range Statement of the competency standard unit and the Training Package Assessment Guidelines

The Evidence Guide forms an integral part of this Competency Standard Unit and shall be used in conjunction with all component parts of this unit and performed in accordance with the Assessment Guidelines of this Training Package

Overview of Assessment

Longitudinal competency development approaches to assessment such as Profiling require data to be reliably gathered in a form that can be consistently interpreted over time This approach is best utilised in Apprenticeship programs and reduces assessment intervention It is the Industrys preferred model for apprenticeships However where summative or final assessment is used it is to include the application of the competency in the normal work environment or at a minimum the application of the competency in a realistically simulated work environment It is recognised that in some circumstances assessment in part or full can occur outside the workplace However it must be in accord with Industry and Regulatory policy in this regard

Methods chosen for a particular assessment will be influenced by various factors These include the extent of the assessment the most effective locations for the assessment activities to take place access to physical resources additional safety measures that may be required and the critical nature of the competencies being assessed

The critical safety nature of working with electricity electrical equipment gas or any other hazardous substancematerial carries risk in deeming a person competent Hence sources of evidence need to be rich in nature so as to minimise error in judgment

Activities associated with normal every day work have a bearing on the decision as to how much and how detailed the data gathered will contribute to its richness Some skills are more critical to safety and operational requirements while the same skills may be more or less frequently practiced These points are raised for the assessors to consider when choosing an assessment method and developing assessment instruments Sample assessment instruments are included for Assessors in the Assessment Guidelines of this Training Package

Critical aspects of evidence required to demonstrate competency in this unit

Before the critical aspects of evidence are considered all prerequisites shall be met

Evidence for competence in this unit shall be considered holistically Each Element and associated Performance Criteria shall be demonstrated on at least two occasions in accordance with the Assessment Guidelines UET Evidence shall also comprise

A representative body of Performance Criteria demonstrated within the timeframes typically expected of the discipline work function and industrial environment In particular this shall incorporate evidence that shows a candidate is able to

Implement Occupational Health and Safety workplace procedures and practices including the use of risk control measures as specified in the Performance Criteria and range and

Apply sustainable energy principles and practices as specified in the Performance Criteria and range and

Demonstrate an understanding of the Essential knowledge and associated skills described in this unit to such an extent that the learners performance outcome is reported in accordance with the preferred approach namely a percentile graded result where required by the regulated environment and

Demonstrate an appropriate level of employability skills and

Conduct work observing the relevant Anti Discrimination legislation regulations policies and workplace procedures and

Demonstrated performance across a representative range of contexts from the prescribed items below

Range of toolsequipmentmaterialsproceduresworkplacesother variables

Group No

The minimum number of items on which skill is to be demonstrated

Item List

A

Manage an Electricity Generating Plant including all of the following

Operate generator and excitation systems

Control and coordinate generation of electrical energy

Analyse prime mover and alternator faults

Effectively liaise with operating and regulatory authorities

Record events using both written and computerised logging systems

DocumentDebrief actions following an event resulting in loss of generation

B

At least one occasion

Dealing with an unplanned event by drawing on essential knowledge and associated skills to provide appropriate solutions incorporated in the holistic assessment with the above listed items

Context of and specific resources for assessment

This unit should be assessed as it relates to normal work practice using procedures information and resources typical of a workplace This should include

OHS policy and work procedures and instructions

Suitable work environment facilities equipment and materials to undertake actual control of a generation plant

Note

Access will be needed to relevant protection control metering and alarm equipment network drawings computerised electrical plant control and monitoring facilities operational event data enterprise operational policies procedures and work practices and enterprise crisis management procedures

In addition to the resources listed above in Context of and specific resources for assessment evidence should show demonstrated competency working in realistic environment and a variety of conditions

Method of assessment

This Competency Standard Unit shall be assessed by methods given in Volume Part Assessment Guidelines

Note

Competent performance with inherent safe working practices is expected in the Transmission Distribution and Rail Traction Industry This requires that the specified essential knowledge and associated skills are assessed in a structured environment which is primarily intended for learningassessment and incorporates all necessary equipment and facilities for learners to develop and demonstrate the essential knowledge and associated skills described in this unit

Concurrent assessment and relationship with other units

There are no concurrent assessment recommendations for this unit


Range Statement

10) This relates to the competency standard unit as a whole providing the range of contexts and conditions to which the Performance Criteria apply. It allows for different work environments and situations that will affect performance.

This Competency Standard Unit shall be demonstrated in relation to controlling the generation side of generation plants and shall be demonstrated using the following:

Key indicators may include frequency time error, bus voltage, machine/ equipment voltage and current limits, plant temperatures, reactive power flows, power factor, generation plant load capabilities, protection settings, visual and audible indicators, analogue and digital displays and load shedding requirements

Systems, plant and equipment may include generator cooling systems; fuel delivery system; generator and generator auxiliary plant; generator excitation system; generation fire protection system; unit coordinated control system; generator circuit breaker/transformer; unit auxiliary switchboards; electricity market auto loading procedures prime mover governing system; alternators; generator differential protection; over/under speed protection; over/under flux protection; synchroscopes; excitation circuits.

Technical and operational indicators may include stimuli (audio, smell, touch, visual), remote or local indicators and recorders, computers and alarms (visible and or audible)

Operating within an isolated system the environment may be remote from plant and equipment being operated; (operation is assisted by remote indicators of plant status and other parameters monitored); during night periods; during inclement or otherwise harsh weather conditions; and in wet/noisy/dusty areas.

Unit operations (systems requirements) may include spurious faults in automatic systems operating out of range, failure of automatic system components and routine plant movement

The following constants and variables included in the Element/Performance Criteria in this unit are fully described in the Definitions Section 1 of this volume and form an integral part of the Range Statement of this unit:

Appropriate and relevant persons (see Personnel)

Appropriate authorities

Appropriate work platform

Assessing risk

Assessment

Authorisation

Confined space

Diagnostic, testing and restoration

Documenting detail work events, record keeping and or storage of information

Drawings and specifications

Emergency

Environmental and sustainable energy procedures

Environmental legislation

Environmental management documentation

Established procedures

Fall prevention

Hazards

Identifying hazards

Inspect

Legislation

MSDS

Notification

OHS practices

OHS issues

Permits and/or permits to work

Personnel

Quality assurance systems

Requirements

Testing procedures

Work clearance systems