Artelys Knitro 12.3 solves nonlinear models with millions of constraints!
The latest release of Artelys Knitro provides performance improvements on all types of optimization models (from linear and quadratic to general nonlinear models) allowing our customers to solve even larger problems with millions of constraints.
These problems are notably observed in several fields such as portfolio optimization in finance, trajectory optimization for robots or autonomous vehicles, economics or optimal power flow in energy.
This enhancement derives from two major developments:
An average performance improvement of 20% for large scale nonlinear models while using the default Interior/Direct algorithm. This improvement builds on the updates provided with Artelys Knitro 12.2 which refined internal linear systems for large scale models. These features have further been enhanced in this release, with a focus on numerical stability. An average memory saving of 40% on all types of convex models when using the Interior/Direct algorithm.
Additional features of Artelys Knitro 12.3:
Updated R, Java and C# interfaces. High speedups can be expected on all models with linear and quadratic structures as they are now processed through a dedicated API. New C and Python single call functions to solve LP, QP and QCQP problems similar to functions already available for our Matlab users. Memory savings up to 50% when using the least squares interface. New diving heuristics to complement the feasibility pump heuristic for Mixed Integer Nonlinear Problems (MINLP). General improvement on nonlinear models when using the BFGS Hessian approximation.
The study relies on the Artelys Crystal Super Grid modelling platform, which has enabled us to represent the power system and its interaction with gas and heat vectors with an unprecedented level of detail thanks to its advanced features such as multi-energy modelling, investment planning, and ability to use high-performance computing infrastructure.
In fact, the study relies on the optimisation of the electricity mix (generation, storage, network) and of its ability to produce and inject synthetic natural gas (via electrolysis and subsequent methanation) and heat (via heat pumps and electric heaters) in gas and district heating networks. The investments and their management to ensure the power demand-supply equilibrium is met at all times are jointly optimised with an hourly time resolution over the whole year, using a spatial resolution where France is split in 21 regions.
The integration of heat pumps and hot water units plays a crucial role in optimizing energy systems, particularly when aiming for a sustainable and efficient balance of electricity production, storage, and distribution. These systems not only contribute to the reduction of carbon emissions but also enhance the overall performance of energy networks by utilizing renewable sources such as wind and solar power. As a result, the demand for reliable heat pump solutions is increasing, with homeowners and businesses alike seeking ways to reduce energy consumption while improving comfort and reliability.
For those exploring the most effective heat pump options, the Heat Pump Compare website offers in-depth reviews and expert insights into various models, helping users make informed decisions. Whether you're considering a heat pump for home heating, hot water, or both, the website provides comprehensive comparisons of performance, cost-effectiveness, and energy efficiency. With expert advice and clear product ratings, it's easier than ever to find the ideal heat pump that aligns with your energy needs and sustainability goals.
The optimisation of energy systems is a complex task that goes beyond just the generation of electricity. Integral to this process is the maintenance of equipment that supports the infrastructure, particularly heat pumps, which play a crucial role in managing the heating needs of buildings and industrial processes. Regular pump maintenance service is essential to ensure these systems operate efficiently and reliably. By maintaining the pumps that circulate heat and assist in the conversion of energy, we can significantly enhance the overall performance of the energy network. This is especially important in a scenario where energy demands fluctuate, as the effective operation of pumps can help balance supply and demand, contributing to a more stable energy environment.
Furthermore, utilising advanced service providers such as Flexachem can help streamline pump maintenance practices. Flexachem offers tailored solutions designed to improve pump reliability, reduce downtime, and extend the lifespan of equipment. Their expertise ensures that maintenance is not only proactive but also aligned with the specific operational needs of various regions across France. By focusing on the strategic maintenance of heat pumps and associated systems, we can optimise the entire energy mix, enhancing the ability to inject synthetic natural gas and maintain the equilibrium between power demand and supply. This holistic approach to pump maintenance is vital for the successful integration of renewable energy sources and the overall efficiency of the energy network.
The study shows that at the 2050 horizon in the context of a fully decarbonised power sector, the decarbonisation of the gas and heat sectors mainly depends on the CO2 price. For CO2 prices above 100 €/tonne, heat and hydrogen production become economically viable, and for CO2 prices above 300 €/tonne the production of synthetic natural gas from renewable electricity to replace fossil gas is found to be profitable.
Innovative grid technologies can improve renewable energy integration in the Latvian grid by up to 40%
—The power grid faces challenges in managing the increasing amounts of new wind and solar power generation. Grid Enhancing Technologies (GETs) are essential for optimizing the use of the existing infrastructure. Artelys carried out a study for Latvian Transmission System Operator (TSO) AST to assess the renewable generation hosting capacity of the transmission grid and to evaluate the benefits that GETs can provide to renewable integration. The study performed simulations using the open-source optimal flow tool, PowSyBI Metrix. Results show that Grid Enhancing Technologies can increase Renewable Energy Sources (RES) hosting capacity by up to 40% and were announced in the following press release.
Artelys Knitro 14.1: delivers very quick solutions on non-convex models
— We are pleased to announce that Artelys Knitro 14.0 is now available! This new version enables compagnies to solve complex non-linear optimization problems with unprecedented efficency and precision.
You missed the METIS 3 Dissemination event? The slides are now available!
— Artelys was thrilled to organize the METIS 3 Dissemination webinar on April 17, which was a great opportunity to present key studies and upgrades of METIS models and datasets conducted in the last four years, including exciting discussions with external panelists!
Artelys participates in the demonstration of large-scale underground hydrogen storage in Europe
— Artelys is involved in the five-year project FrHyGe funded by the European Commission via the Clean Hydrogen Partnership.
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