Security and reliability
In this section
In this section
- Ancillary services causer pays contribution factors
- Network support and control ancillary services procedures and guidelines
- System restart ancillary services guideline
- Market ancillary services specification and FCAS verification tool
- Regional benefit ancillary services procedure
- Frequency and time deviation monitoring
- Distribution loss factors for the 2019-20 Financial Year
- Distribution loss factors for the 2018-19 Financial Year
- Distribution loss factors for the 2017-18 Financial Year
- Distribution loss factors for the 2016-17 Financial Year
- Distribution loss factors for the 2015-16 financial year
- List of regional boundaries and marginal loss factors
The NEM, like power systems worldwide, is being transformed from a system dominated by large thermal power stations, to a system including a multitude of power generation resources and technologies of various sizes. At the same time, customers are engaging with their electricity supply in new ways.
The energy transformation involves a shift from:
- Homogenous to diverse supply resources.
- Synchronous to non-synchronous generation.
- A centralised to a decentralised system
- Passive to active consumers.
Each of these trends acts to increase the variability of the power system. AEMO’s challenge is to continually meet the needs of the power system, in the face of major structural changes and the resulting uncertainty across investment and operational timeframes.
While the power system is being transformed, the laws of physics that determine electrical flows do not change. This Power System Requirements paper outlines the interdependent technical and operational needs which must be met at all times to maintain a secure and reliable system.