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 performing substation switching to a given schedule All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies KSTSBA Power system substation switching operation KS01-TSB39A Power system substation switching operation Evidence shall show an understanding of power system substation switching operation to an extent indicated by the following aspects T Installation of switchgear and associated equipment encompassing Types and function of various switchgear isolators airbreak switches gasfilled switches vacuum type links fuses oil disconnectors fuse switches circuit breakers operating characteristics advantages and disadvantages of different types switchgear installation procedures earthing requirements and techniques Types of equipment transformers reactors regulators capacitors relays surge arrestors fault indicators and mobile generators Installation procedures for switchgear and equipment standards codes legislation supply authority regulations and or enterprise requirements assembly and erecting procedures earthing requirements and techniques pole mounted locations Maintenance procedures for switchgear and equipment diagnosing and rectifying faults according to electricity supply industry standards and procedures Testing and commissioning electricity supply industry standards and procedures T Low voltage switching principles encompassing Standards codes legislation supply authority regulations and or enterprise requirements applicable to switching of low voltage to a given schedule Requirements for the use of manuals system diagramsplans and drawings types characteristics and capabilities of electrical apparatus use characteristics and capabilities of specialised tools and testing equipment LV network interconnectors source of possible backfeed Low voltage switching techniques identifying hazards assessing and controlling risks associated with LV switching operations electrical access permits operational procedures earthing procedures Personnel protective equipment PPE for LV switching T High voltage switching principles encompassing Standards codes legislation supply authority regulations and or enterprise requirements applicable to switching of high voltage to a given schedule Requirements for the use of manuals system diagramsplans and drawings types characteristics and capabilities of electrical apparatus use characteristics and capabilities of specialised tools and testing equipment network interconnectors source of possible backfeed Role of the HV switching operator Operational forms access authorities and permits associated with HV switching types of operational forms access authorities and permits purpose and procedure for operational forms access authorities and permits Use and operation of equipment associated with HV overhead and substation equipment test instruments sticks interrupters arc stranglers Types and categories of HV switchgear Application function and operating capabilities of switchgear Restrictions pertaining to HV switching equipment Procedures for the isolation of HV transmission main and working earths Earthing HV electrical apparatus practices and procedures for access purposes of Operational and additional work part onsite earths factors determining the location and effectiveness of Operational earthing acceptable industry procedures personal protective equipment high voltage switching techniques Operate switching apparatus identifying hazards assessing and controlling risks associated with HV switchgear operation systematic and defensive techniques mobile radio procedures double isolation procedures T High voltage fault switching principles encompassing Primary causes effects and types of HV electrical faults HV protection devices main components types categories applications functions Basic principle of operation of HV system protection devices Protection coordination and protection zoning HV feeder autoreclosing suppression function application Circuit condition requirements and switching considerations when paralleling and separating HV feeders T 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 T High voltage SWER system encompassing Application and function of SWER system components Circuit arrangement Principle of operation Hazards and procedures associated with faulty SWER earth systems Procedure to isolate energise and commission SWER substations T 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 Date 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 localremote control system Operation of a field devices using SCADA systems via a Remote Access Terminal RAT Dial Up Annunciated System and Local Control Station T HV overhead and substation switching principles encompassing Legislation Standards codes legislation supply authority regulations and or enterprise requirements applicable to HV overhead and substation switching Requirements for the use of manuals system diagramsplans and drawings types characteristics and capabilities of HV electrical equipment to be switched use characteristics and capabilities of specialised tools and testing equipment Role and responsibilities of the HV switching operator Operational forms access authorities and permits hazardrisk assessments associated with HV switching types of operational forms access authorities and permits hazardrisk assessments purpose and procedure for operational forms access authorities and hazardrisk assessments Use and operation of equipment associated with HV overhead and substation equipment test instruments sticks interrupters arc stranglers HV switchgear types categories application operating capabilities Operation of HV overhead switching or indicating devices fuses disconnect fuses load switching live line indicators capacitors reclosers sectionalisers underslung links airbreaks switches disconnects live line clamps phasing sticks phasing tester Operation of protection systems and substation equipment fault levels and settings types and applications protection systems and substation equipment fault levels and settings types and applications Restrictions pertaining to HV switching equipment Procedures for the isolation of HV mains and working earths earthing HV electrical apparatus practices and procedures for access authority issuing HV switching techniques Operate switching apparatus identifying hazards assessing and controlling risks associated with HV switchgear operation systematic and defensive techniques mobile radio procedures double isolation procedures |