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Evidence Guide: UETTDRDS50A - Design customer power system substations

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

UETTDRDS50A - Design customer power system substations

What evidence can you provide to prove your understanding of each of the following citeria?

Plan for and coordinate the design of customer substations

  1. OHS practices/procedures and environmental and sustainable energy procedures, which may influence the design of customer substations, are reviewed and determined.
  2. Purpose of the design is established and expected outcomes of the work are confirmed with the appropriate personnel.
  3. Organisational established procedures on policies and specifications for the design are obtained or established with the appropriate personnel.
  4. Equipment/tools and personal protective equipment are selected and coordinated based on specified requirements and established procedures
  5. Work is prioritised and sequenced for the most efficient and effective outcome following consultation with others for completion within acceptable timeframes, to a quality standard and in accordance with established procedures
  6. Risk control measures are identified, prioritised and evaluated against the work schedule
  7. Relevant work permits are secured to coordinate the performance of work according to requirements and/or established procedures
  8. Resources including personnel, equipment, tools and personal protective equipment required for the job are identified, scheduled and coordinated and confirmed in a safe and technical working order
  9. Liaison and communication issues with other/authorised personnel, authorities, clients and land-owners are resolved and activities coordinated to carry out work
  10. Site is prepared according to the work schedule and to minimise risk and damage to property, commerce, and individuals in accordance with established procedures
OHS practices/procedures and environmental and sustainable energy procedures, which may influence the design of customer substations, are reviewed and determined.

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Purpose of the design is established and expected outcomes of the work are confirmed with the appropriate personnel.

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Organisational established procedures on policies and specifications for the design are obtained or established with the appropriate personnel.

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Equipment/tools and personal protective equipment are selected and coordinated based on specified requirements and established procedures

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Work is prioritised and sequenced for the most efficient and effective outcome following consultation with others for completion within acceptable timeframes, to a quality standard and in accordance with established procedures

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Risk control measures are identified, prioritised and evaluated against the work schedule

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Relevant work permits are secured to coordinate the performance of work according to requirements and/or established procedures

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Resources including personnel, equipment, tools and personal protective equipment required for the job are identified, scheduled and coordinated and confirmed in a safe and technical working order

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Liaison and communication issues with other/authorised personnel, authorities, clients and land-owners are resolved and activities coordinated to carry out work

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Site is prepared according to the work schedule and to minimise risk and damage to property, commerce, and individuals in accordance with established procedures

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Carry out and coordinate the design of customer substations

  1. Circuit/systems modelling is used to evaluate alternative proposals as per established procedures.
  2. OHS and sustainable energy principles, functionality and practices to reduce the incidence of accidents and minimise waste are incorporated into the project in accordance with requirements and/or established procedures
  3. Substation design decisions are made on the basis of safety and effective outcomes according to requirements and/or established procedures
  4. Mathematical models of the customer substation are used to analyse the effectiveness of the finished project as per requirements and established procedures
  5. Technical advice is given to potential hazards, safety risks and control measures so that monitoring and preventative action can be undertaken and/or appropriate authorities consulted, where necessary, in accordance with requirements and established procedures
  6. Essential knowledge and associated skills are applied to analyse specific data and compare it with compliance specifications to ensure completion of the project within an agreed timeframe according to requirements.
  7. Solutions to non-routine problems are identified and actioned using acquired essential knowledge and associated skills according to requirements
  8. Quality of work is monitored against personal performance agreement and/or established organisational and professional standards.
Circuit/systems modelling is used to evaluate alternative proposals as per established procedures.

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

OHS and sustainable energy principles, functionality and practices to reduce the incidence of accidents and minimise waste are incorporated into the project in accordance with requirements and/or established procedures

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Substation design decisions are made on the basis of safety and effective outcomes according to requirements and/or established procedures

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Mathematical models of the customer substation are used to analyse the effectiveness of the finished project as per requirements and established procedures

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Technical advice is given to potential hazards, safety risks and control measures so that monitoring and preventative action can be undertaken and/or appropriate authorities consulted, where necessary, in accordance with requirements and established procedures

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Essential knowledge and associated skills are applied to analyse specific data and compare it with compliance specifications to ensure completion of the project within an agreed timeframe according to requirements.

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Solutions to non-routine problems are identified and actioned using acquired essential knowledge and associated skills according to requirements

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Quality of work is monitored against personal performance agreement and/or established organisational and professional standards.

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Complete and coordinate the design of customer substations

  1. Final inspections of the design are undertaken to ensure they comply with all requirements and include all specifications and documentations needed to complete the design brief.
  2. Appropriate personnel are notified of completion and reports and/or completion documents are finalised.
  3. Reports and/or completion documents are submitted to relevant personnel/organisations for approval and, where applicable, statutory or regulatory approval
  4. Approved copies of design documents are issued and records are updated in accordance with established procedures.
Final inspections of the design are undertaken to ensure they comply with all requirements and include all specifications and documentations needed to complete the design brief.

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Appropriate personnel are notified of completion and reports and/or completion documents are finalised.

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Reports and/or completion documents are submitted to relevant personnel/organisations for approval and, where applicable, statutory or regulatory approval

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Approved copies of design documents are issued and records are updated in accordance with established procedures.

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

9) This provides essential advice for assessment of the unit of competency and must be read in conjunction with the Performance Criteria and the range statement of the unit of competency 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

9.1)

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 Industry’s 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 substance/material 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

9.2)

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

Evidence for competence in this unit is based, shall be considered holistically. Each element and associated Performance Criteria shall be demonstrated on at least two occasions in accordance with the “Assessment Guidelines – UET12UET12”. 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 as described in this unit to such an extent that the learner’s 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 tools/equipment/materials/procedures/workplaces/other variables

Group No

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

Item List

A

Completion of six (6) designs in total drawn from at least two (2) of the following project types:

Single transformer substation

Multi-transformer substations

Upgrade/alteration to existing assets

Auto-changeover systems

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

9.3)

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 design of customer substations.

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

Method of assessment

9.4)

This Competency Standard Unit shall be assessed by methods given in Volume 1, Part 3 “Assessment Guidelines”.

Note:

Competent performance with inherent safe working practices is expected in the Industry to which this Competency Standard Unit applies. This requires that the specified essential knowledge and associated skills are assessed in a structured environment which is primarily intended for learning/assessment 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

9.5)

There are no recommended concurrent assessments with this unit, however in some cases efficiencies may be gained in terms of learning and assessment effort being concurrently managed.

Required Skills and Knowledge

8) 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 designing customer substations.

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

KS01-TDS50A Customer power system substations - Design

Evidence shall show an understanding of designing customer power system substations to an extent indicated by the following aspects:

T1 Substations and power transformers encompassing:

Relationship between the substations within an overall power system - purpose, location in relation to load centres, layout of HV equipment within the substation and auxiliary equipment

Characteristics of a power transformer - basic construction of distribution transformers, operation under load/no load conditions, types and basic operation of tap changing switches including solid state types, efficiency and cooling

Auxiliary equipment used on transformers - function and basic operation

Maintenance of a power transformer - basic connections, restrictions to parallel operation, problems and remedies associated with harmonics, testing and fault finding procedures

Characteristics of a reactors - description and purpose

T2 Installation of metering and control equipment encompassing:

Standards, codes, legislation, supply authority regulations and or enterprise requirements pertaining to the installation and maintenance of energy meters and associated equipment

Types of meters - kilowatt-hour meters single and polyphase, demand meters, recording meters and electronic recording metering systems summators

Installation and removal methods - direct connection and plug in method, enterprise specific

Types of associated equipment and accessories - meter boards, service fuse, links, contactors, time switch, audio frequency injection relay

Testing procedures - safety and polarity testing

T3 High voltage distribution transformer principles encompassing:

Operation of HV distribution transformers - principle governing factors for transformer ratings, protection and alarms, operating limitations and the relationship between transformer and HV fuse rating, purpose and principle operation of HV distribution transformer tap changers, HV distribution transformer and transformer — cable combination switching practices, paralleling requirements, isolation and earthing procedures for access, common distribution transformer and associated electrical apparatus faults

HV underground switching equipment - arc stranglers, switch operation, load break elbows, switching cubicles, canister fuses, bayonet fuses, F and G switching cubicles, voltage indicators and phasing testers

T4 Feeder automation system encompassing:

Function of feeder automation system and the main components

Operation procedure for a remote field device from a local control station

Functions of “System Control and Data Acquisition” (SCADA) (or any other relevant Data Acquisition and Control) systems and its main components

SCADA system security interlocks and access restrictions

SCADA system operation when switching apparatus or retrieving data via a remote access device such as; Remote Access Terminal (RAT), Dial Up Voice Annunciated System and Local Control Station

Function of the main components of a local/remote control system

Operation of a field devices using SCADA systems via a Remote Access Terminal (RAT), Dial Up Annunciated System and Local Control Station

T5 Layout principles for a distribution substation minor upgrade encompassing:

Commonwealth, State/Territory and local government legislation, Standards, codes, supply authority regulations and or enterprise requirements applicable to a distribution substation minor upgrade

Requirements for the use of distribution substation minor upgrade construction manuals, system diagrams/plans and drawings and for plans such as work method statements for the control of OHS risks

Methods in determining material, equipment and tool lists - components types and quantity required, spacing of components and equipment, costings of items and components.

Purchasing and contractual arrangements to include a requirement to eliminate OHS hazards, minimise risks and provide residual OHS risk information

Determination of conductor size, type and route length

Resources needed for the laying of conductors, cables and equipment

Determining the appropriate installation sequence

Minimum clearances between conductors and equipment

Estimation of the duration of underground distribution extension project

T6 Fundamentals of distribution transformers encompassing:

Standards, codes, legislation, supply authority regulations and or enterprise requirements pertaining to the safe operation and testing of distribution transformers and auxiliary equipment

Drawing layouts, conventions and symbols - vector group of transformers and three phase transformers

Construction of a distribution transformer

Characteristics when operated under load and no load conditions

Percentage impedance determinations by test and calculation

Function and operation of tap charging switches including solid state tap changing equipment

Function and operation of transformer auxiliary equipment

Problems caused by harmonics in transformers

Methods and equipment used to overcome harmonics in transformers

T7 Testing procedures of distribution transformers encompassing:

Safety precautions specific to the testing of distribution transformers

Procedures for safely connecting distribution transformers for testing

Testing of distribution transformers to determine losses

Calculation of transformer’s efficiency

Methods and types of equipment used to cool transformers - properties of transformer oil and tests performed on transformer oil

Techniques in performing selected tests on transformer oil

Techniques in performing testing procedures on armer

Techniques in testing distribution transformers

Distribution transformer parallel connections - conditions and restrictions for parallel operations and calculations of loading on transformers operating in parallel

Connection of transformer in parallel to supply a common load

Range Statement

10) This relates to the unit of competency 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 the design of customer substations and may include the following:

Substations, transformers, HV switchgear, LV switchgear, relevant protection systems, (fuses and circuit breakers), civil works, customer distribution boards.

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.

Safe design principles

Testing procedures

Work clearance systems