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Use advanced SCADA functions to manage the power system
Level
5
Credits
3
Purpose
People credited with this unit standard are able to: retrieve historical SCADA
data to manage the power system; graph data for analysis using the trend
feature to manage the power system; and use notes pages to relay
information to manage the power system.
Subfield
Electricity Supply
Domain
Electricity Supply - Power System Management
Status
Registered
Status date
16 April 2010
Date version published
16 April 2010
Planned review date
31 December 2014
Entry information
Recommended: Unit 19479, Use SCADA to manage the
power system, or demonstrate equivalent knowledge
and skills.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
Electricity Supply Industry Training Organisation
Accreditation and Moderation Action Plan (AMAP) reference
0120
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
This unit standard is intended for, but not restricted to, workplace assessment. The
range statements across the unit standard can be applied according to industry
specific equipment, procedures, and processes.
2
Safety of personnel and plant must be a priority throughout the assessment. If the
safety requirements are not met the assessment must stop.
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3
Performance and work practices in relation to the elements and performance criteria
must comply with all current legislation, especially the Electricity Act 1992, and any
regulations and codes of practice recognised under that statute; the Health and
Safety in Employment Act 1992; and the Resource Management Act 1991.
Electricity supply industry codes of practice and documented industry procedures
include the Safety Manual – Electricity Industry (SM-EI) Wellington: Electricity
Engineers’ Association. A full list of current legislation and industry codes is
available from the Electricity Supply Industry Training Organisation, PO Box 1245,
Waikato Mail Centre, Hamilton 3240.
4
The phrase in accordance with industry requirements is implicit in all elements and
performance criteria in this unit standard.
5
Reference to procedures and specifications in this unit standard may be taken as
including documented procedures and specifications relevant to the workplace in
which assessment is carried out.
6
Industry requirements include all asset owner requirements; manufacturers’
specifications; and enterprise requirements which cover the documented workplace
policies, procedures, specifications, business, and quality management requirements
relevant to the workplace in which assessment is carried out.
7
The following terms and abbreviations relate to this unit standard:
Asset owner refers to the owner of an electricity supply network that takes its point of
supply from Transpower NZ and delivers electricity to industrial, commercial, and
residential customers.
Data refers to information in a written or numerical form. The latter may include
summary statistics, information in tables, and numbers displayed in a variety of
graphs.
SCADA is the Supervisory Control and Data Acquisition system, a computer system
that is used to operate equipment and monitor the performance of the electrical
power system and/or network, gather data for analytical purposes, and generally
assist the operation and delivery of electrical network functions concerning the supply
of electricity to customers.
Elements and performance criteria
Element 1
Retrieve historical SCADA data to manage the power system.
Performance criteria
1.1
The historical data displays are accessed and functionality is described.
Range
includes but is not limited to – historical data retrieval displays,
creating manual and automatic scenarios, archiving scenarios,
replaying scenarios, analysing a recording, deleting a scenario,
message log, retrieving single point history, retrieving a system
snapshot.
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1.2
A sequence of events and snapshots of data is recorded for later review.
Range
includes but is not limited to – replay scenario, SCADA database
snapshots, historical data recording area, initiated manually or
automatically, data retrieval.
Element 2
Graph data for analysis using the trend feature to manage the power system.
Performance criteria
2.1
Values are sampled and data prepared using trend applications.
Range
2.2
includes but is not limited to – define points, assigning groups,
selecting data to be trended, types of graphical displays, trending
historical data, deleting trended objects and points, assigning or
de-assigning a chart recorder or digital display, archiving trended
data.
Trend sample values are displayed and described using graphical display
methods.
Range
includes but is not limited to – graph menu, selecting tracks and
objects, viewing values, deleting objects, zooming and panning
track area, snapshot files.
Element 3
Use notes pages to relay information to manage the power system.
Performance criteria
3.1
Notes are accessed and graphics and text attached to the note.
Range
3.2
includes but is not limited to – note page display, action menus
and graphic functions, colour selection, display operations, saving
note files.
Viewing notes are read and printout obtained.
Range
includes but is not limited to – deleting notes, printing notes.
Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
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Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP also includes useful information about special requirements for organisations
wishing to develop education and training programmes, such as minimum qualifications for
tutors and assessors, and special resource requirements.
Comments on this unit standard
Please contact the Electricity Supply Industry Training Organisation info@esito.org.nz if
you wish to suggest changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016