1. Load and Power production production
LEMI
CONTRIBUTION TO A SUSTAINABLE NATURAL GAS TRANSPORT NETWORK BY INTEGRATING RENEWABLE ENERGY SOURCES.
Abdelkader Bouzianea*, Kamal Mohammedia , Idir Belaidia , Youcef Smailia
a LEMI, M. Bougara University, Avenue de l’Indépendance, Boumerdes
Abstract:
Natural gas is one of the cleanest sources of energy as the world consumption will double by Nevertheless, the transport of Natural Gas in pipes needs compression stations which consume significant amount of energy that is often provided by some of the Natural Gas to compress. The result is the increase of cost and CO2 emissions. Improving efficiency and reducing GHG emissions in this case means improving the efficiency of the gas turbines or reducing the contribution of fossil sources by using alternative clean energy sources like renewables. This paper is dealing with the modeling, simulation and optimization of Hybrid Generation systems integrating Renewable Energies (PV, Wind turbine, Fuel Cell. etc.). We present a case study with a pre feasibility simulation under Homer environment. The aim is to minimize the contribution of fossil sources to the natural gas compression process while reducing CO2 and other greenhouse gases emissions. The environmental and social impacts are significant for remote areas nearby the gas compression stations along the pipelines.
Keywords: Hybrid System – Natural Gas Network – Efficiency – CO2 reduction – Simulation – PV – Wind Turbine – Fuel Cell.
Hybrid system configuration
Algeria has 160 trillion cubic feet of proven natural gas reserves, ranking it in the top 10 worldwide. Several contracts with hundreds of millions of dollars are going to be concluded for investments in the gas industry. Feasibility studies are on the way to build a new gas pipeline linking Algeria directly to Europe via Spain. Billion dollar contracts have been signed to develop 7 of 12 existing gas fields in the In Salah area. Other highly valuable investments are under way.
The hybrid energy system consists of a Diesel Generator DG, Wind Turbine WT, photovoltaic PV, Fuel cell , battery bank, and load. On this system, sum action allow to correct the power produced and power consumed to achieve a balance between production and consumption and thus keep the frequency close to its reference value.
These actions will act on the production of renewable energy, diesel generator and battery bank. The battery and hydrogen tanks energy storage systems are the current attractive means of smoothing intermittent wind or solar power generation
The DG is used to supply the HES when the other systems cannot sufficiently provide it. In this case, if we have a high variation of fluctuation of renewable sources, the DG turns on/off in short time. That, it is no recommended .
Every 200 km we need a compression station for transportation of the natural gas from the fields to the consumers., 5% of the transported gas is consumed for feeding gas turbines. combustors which means GHGs emissions
SOLAR THERMAL POWER PLANTS EVOLUTION
Fig. 1: HES schematic diagram
Load and Power production production
Simulation and Results
Fig. 3, Case batteries empty hydrogen tank empty
Fig. 4, Case batteries empty/ hydrogen tank full
Fig. 5, Case batteries full hydrogen tank full
Conclusion
Our contribution aims to help reduce the natural gas self consumption and GHGs emissions reduction of pipelines compression station. The idea is to substitute the gas turbine by a hybrid energy system integrating RE, PV, Wind turbines, Fuel cells,…….A micro-grid’s dynamic control method, which secures a real power balance and enhances the operational capability to handle frequency fluctuation in multiple source energy hybrid micro-grid power system, is proposed. The fuzzy controller is introduced to compensate the power fluctuations in micro-grid power systems. Therefore, the proposed control helps to solve power quality issue resulting from real power imbalance fluctuations