• Power system operation

  • In this section

  • Security of supply is a measure of the power system's capacity to continue operating within defined technical limits, even in the event of the disconnection of a major power system element such as an interconnector or large generator.

    Reliability is a measure of the power system's capacity to continue to supply sufficient power to satisfy customer demand, allowing for the loss of generation capacity.

    AEMO's system operating procedures are developed primarily for AEMO to provide information related to the management of the National Electricity Market (NEM) and security of the power system.

    Guidelines for preparing Local Black System Procedures

    Clause 4.8.12 (e) of the National Electricity Rules requires AEMO to develop and publish guidelines for preparation of local black system procedures in consultation with Generators and network service providers.

    NEM System Restart Information Sessions

    Click here for further information about System Restart Information Sessions.

    Scope of Delegations to TNSPs

    AEMO has the power to delegate to TNSPs some of the AEMO power system secuirty responisbilities under clause 4.3.3 of the National electricity Rules. The linked page below has details of the delegations made to a number of TNSPs in the NEM.

    Secure operation of South Australia

    On Sunday 13 November 2016, the South Australian power system was operating with one synchronous generating unit in service. AEMO has completed preliminary analysis of the period and has concluded the power system in South Australia may not have been operating in a secure operating state. Under the National Electricity Rules, this is considered a reviewable operating incident and AEMO is obliged to investigate and report on this incident.

    This review and report will be completed and published by AEMO in due course. In view of AEMO’s preliminary conclusion, we propose new arrangements to maintain power system security during periods of anticipated low fault levels to be implemented with immediate effect.

     

    Power System Operating Procedures