On 11 January 2017, the Electricity Market Review (EMR) published a position paper proposing the adaptation of Chapter 4 of the National Electricity Rules (NER) into the Wholesale Electricity Market (WEM) Rules. The intent is to ensure:
- Efficient operation of Chapters 5 and 5a of the NER (technical and procedural requirements for new/modified access to the Western Power network) which is a central reform of the EMR. Chapter 4 outlines the basis for achieving and maintaining a secure power system and so informs the adequacy of a new or modified generator’s access.
- The Australian Energy Market Operator (AEMO) can implement its wholesale settlement and security constrained dispatch system. NER Chapter 4 determines the conditions and circumstances around how AEMO can intervene in the National Electricity Market (NEM), e.g. by implementing frameworks that govern operating states, load shedding and delegation and constraint management. These will be adapted for WA with relevant referencing of responsibilities between various WA agencies, establishing a WA Jurisdictional System Security Coordinator to determine WA load shedding guidelines and enabling the ERA and its Reliability Advisor Committee to undertake similar functions to that of the Australian Energy Market Commission (AEMC) and Reliability Panel under the NER around determining frequency operating standards, a reliability standard and system restart standard.
The position paper suggests that of the NER Chapter 4; 25% can be adapted without amendment and 70% is suitable with some amendment, leaving only a small percentage that is not suitable for adaptation in the WEM. If elements of NER Chapter 4 are adapted for WA, then this will require the replacement or modification of existing provisions within Chapters 3 and 7 of the existing WEM Rules and relevant clauses in the WA Technical Rules will be substituted and incorporated in the WEM Rules.
The paper invites comments on any or all matters raised and is requesting specific comment on:
- The proposed power system security operating states framework, including the proposed exemption of the AEMO from the 30 minute time limit to restore the power system to a secure operating state in relation to the frequency operating standards only and under certain conditions.
- The proposed load shedding framework, including the functions and responsibilities proposed for a WA Jurisdictional System Security Coordinator, a role which is proposed to be assignment to the Coordinator of Energy.
Submissions are due by 23 February 2017 and Future Effect is pleased to assist any stakeholders in formulating their response to this paper.