South Africa’s newest iteration of its Integrated Resource Plan (IRP 2023) serves as a strategic blueprint to ensure energy security, sustainability and economic growth through a diversified energy mix. However, whilst the proposal is clearly aligned with establishing a strong renewable posture that is sensitive to global climate goals, it must also be implemented in a manner that does not impact grid stability.
One of the main challenges in implementing the IRP is ensuring grid stability while integrating renewable energy sources and balancing fluctuating energy demands. Advanced process control (APC) can play an important role in improving power plant efficiency whilst supporting the country’s transition to a low-carbon energy future.
Managing grid stability
Most South Africans understand how important grid stability is and its ability to provide uninterrupted energy supply that powers our daily lives and that of business, big or small. Its effective control and management are therefore paramount. APC’s role goes beyond basic process controls by employing sophisticated algorithms and models to predict and adjust process behaviours. It is also this ability that makes it so compelling in power generation and resultant stability.
Fundamentally, due to APC’s dynamic nature that sees it continuously collecting and analysing operational data from power generation systems, operators can make real-time adjustments that stabilise the grid. APC enables power plants to finetune parameters like fuel flow, temperature and pressure, ensuring that energy generation matches demand fluctuations in real time. Furthermore, by automating rapid adjustments in power generation, APC helps mitigate disturbances such as sudden spikes or drops in energy demand. It smooths power generation ramp-up and ramp-down processes. Through process optimisation, it also minimises waste, enhances fuel utilisation and maximises the efficiency of power generation assets.
The role of the IRP
South Africa’s IRP places significant emphasis on increasing the share of renewables in the energy mix. Here, APC steps into the limelight, facilitating this transition by:
• Optimising energy management, which ensures that energy production processes are adjusted in real time to accommodate fluctuations in renewable energy generation.
• Using data-driven models to anticipate variations in energy supply and demand, improving resource allocation.
• Load balancing by distributing electricity efficiently between renewable and conventional energy sources to maintain grid stability.
• Enabling a responsive power grid capable of adapting to the intermittent nature of solar and wind energy.
• Integration with energy storage by managing battery and other storage systems to ensure surplus renewable energy is efficiently stored and deployed when needed.
South Africa’s environmental goals
The IRP also considers the globe’s environmental targets and meets the country’s Nationally Determined Contributions (NDCs) under the Paris Agreement, promoting a transition to a low-carbon economy. APC significantly contributes to environmental sustainability by ensuring efficient fuel combustion, for example, thereby minimising the production of harmful pollutants such as carbon monoxide and particulate matter.
Importantly, APC contributes to lower nitrogen oxides (NOx), which are compounds such as nitric oxide (NO) and nitrogen dioxide (NO2), produced during high-temperature combustion. NOx contributes to air pollution and smog formation amongst others.
Similarly, it lowers sulphur oxides (SOx), which comprise sulphur dioxide (SO2) and sulphur trioxide (SO3), derived from burning fuels containing sulphur. SOx is major contributor to acid rain, and can harm ecosystems and human health.
In both instances, APC finetunes combustion parameters such as air-to-fuel ratios to ensure more complete burning of fuels. This in turn reduces the formation of NOx and SOx during combustion.
There’s no doubt APC should play an integral role in today’s grid management and processes and also in South Africa’s steps toward reaching its IRP 2030 goals. It will undoubtedly assist in establishing a cleaner, stable and future-ready grid.
| Tel: | +27 11 254 6400 |
| Email: | [email protected] |
| www: | www.se.com/za/en/ |
| Articles: | More information and articles about Schneider Electric South Africa |
© Technews Publishing (Pty) Ltd | All Rights Reserved
printer friendly version