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Respond to routine events and minor emergencies on the electricity
supply power system
Level
5
Credits
15
Purpose
People credited with this unit standard are able to: identify and analyse
power system events; implement remedial actions; isolate system faults; and
implement asset owner emergency procedures.
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
Prerequisite: Unit 16277, Evaluate faults on electricity
supply power network equipment (System Operation), 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 can be assessed against in a workplace environment, or in a
training or educational environment if simulated equipment response and examples
are able to be provided, or in a combination of both environments.
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2
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.
3
The phrase in accordance with industry requirements is implicit in all elements and
performance criteria in this unit standard.
4
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.
5
Reference to terms, procedures, and specifications in this unit standard may be
taken as including industry documented procedures and specifications relevant to the
workplace in which assessment is carried out.
6
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.
Asset owner procedures are the approved documented work site methods for
carrying out work on an electrical supply network to the standard required by the
asset owner.
Switching refers to actions carried out by a network control centre to divert electrical
current and permit contractors to perform work safely and efficiently on an electricity
supply network without discontinuing supply to customers.
Network security refers to the asset owner’s ability to maintain continuity of electricity
supply to customers.
Emergency procedures are methods, strategies, and action taken by the asset owner
to respond to power system events that threaten the continuity of supply of electricity
to customers.
Power system events are routine occurrences that threaten the operational efficiency
and performance of power system components, electrical route ways, circuits, plant,
and equipment, and may pose a threat to the continuity of supply of electricity to
customers.
SCADA – Supervisory Control and Data Acquisition system used for control,
indication, and monitoring purposes.
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Elements and performance criteria
Element 1
Identify and analyse power system events.
Performance criteria
1.1
Power system events that threaten and/or disrupt network security are identified
and details are recorded.
Range
1.2
Data and statistics on power system events are collated.
Range
1.3
may include but is not limited to events such as – lightning, line
faults, cable faults, car hits, bird strikes, animals, kites.
Possible solutions are developed for restoring supply.
Range
1.5
may include but is not limited to – SCADA, customer responses,
supplier responses, weather reports, system maximum demand.
Causes and effects of power system events are identified for analytical
purposes.
Range
1.4
may include but is not limited to – external power system
disturbance, lightning, Transpower network faults, generation loss,
equipment failure.
may include but is not limited to – alternate circuits, alternate
feeders.
Interpretation of data and statistics is demonstrated and confirmed in
consultation with others.
Range
may include but is not limited to – event data and statistics,
assessment of system fault conditions, appropriateness of
alternate supply;
others may include but are not limited to – in consultation with
supervising officer, network system operators, field operators,
system control manager.
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Element 2
Implement remedial actions.
Performance criteria
2.1
The selected preferred solution meets the asset owner requirements for
remedying effects of power system events.
Range
2.2
Chosen remedial action or solution is implemented within set timeframe.
Range
2.3
may include but is not limited to – response time by system
operator, contractors.
Performance indicators are established to monitor effectiveness of the chosen
solution in remedying effects of power system event.
Range
2.4
may include but is not limited to – customer impact, commercial
impact, estimated time to implement, availability of resources,
customer expectations, approval for strategy.
may include but is not limited to – incident investigation report, debrief after events, customer responses, outage minutes.
Evidence of effectiveness of remedial action is gathered for analysis by
operating supervisor at agreed intervals.
Range
may include but is not limited to – average time to effect remedial
action, contingency strategies required.
Element 3
Isolate system faults.
Performance criteria
3.1
System faults are located and identified.
Range
3.2
may include but is not limited to – circuit involved, stations.
Switching requests to isolate faulty components are actioned and carried out
within agreed response time.
Range
may include but is not limited to – response time by system
operators, field operators, contractors.
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3.3
Isolation points are established in accordance with asset owner procedures and
industry safety rules.
Range
may include but is not limited to – the requirements of the SM-EI,
Electricity Act 1992, Electricity Regulations 1997, electricity supply
industry codes of practice, industry procedures.
Element 4
Implement asset owner emergency procedures.
Performance criteria
4.1
Information identifying emergency situations is recorded and immediately
forwarded to supervising officer.
4.2
Emergency procedures are initiated to disconnect hazardous equipment from
the network.
Range
4.3
Emergency procedures are monitored and evidence gathered to develop
strategies to resolve the emergency situations.
Range
4.4
may include but is not limited to – specific tasks required of system
operators, field operators, contractors.
Switching operations are confirmed with all parties prior to carrying out
emergency procedures.
Range
4.6
may include but is not limited to – specific tasks required of system
operators, field operators, supervisor.
Unaffected equipment is restored to network supply after emergency
procedures have been completed within the asset owner’s timeframe.
Range
4.5
may include but is not limited to – specific tasks required of system
operators, field operators, contractors.
may include but is not limited to – specific tasks required of system
controller, system operator, contractor, control centre supervisor.
Switching operations required to action emergency procedures are performed.
Range
may include but is not limited to – specific tasks required of system
operators, field operators, contractors.
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.
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Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
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