The electric network of a whole country has to be properly controlled and managed in order to balance power generation with power consumption to keep the network’s stability. This network management is done from a Load Dispatch Center (LDC), who will run the consumption forecasts, control the generation accordingly, control the electricity flow from one producing area to a consumption area (including when exporting electricity to neighboring countries) and if needed, decide of the areas where rolling blackouts will happen. In Ethiopia, Ethiopian Electric power (EEP) is executing many projects in consideration of demand for electricity to enhance its capacity in line with the growth of the country. The electricity demand is rapid and has been doubled for the past 10 years. In the next five years since the demand is expected to increase 28% - 32% per year. The plan for GTP – II is to reach the capacity of power generation 17.3 GW (up to about 5 GW in 2016) and 21,728 km of transmission lines by 2020.
As power systems grow in size and complexity, it becomes more difficult to operate them while meeting the four objectives of cost efficiency, reliability, quality of supply and safety. Being the main means of supervision and real time data exchange, control centers are needed by power system utilities to enable them to manage their electric grid while meeting these four objectives. The existing LDC system which was operational since 8 years cannot deal with the current challenges that the sector has to face in the coming years in terms of sizing, performance, functionality and maintainability. Even if the current LDC was commissioned eight years ago, its conception was performed 13 years ago based on a power system of a small size, which is not the case anymore. As a result, newly built power plants in Ethiopia (dams, windfarms…) cannot be linked to the current dispatch center and cannot be controlled as smoothly as if they were fully integrated. The need of a new LDC is not questionable at this stage, as it will improve the automation level in operation for enhancing reliability, stability, security and quality of the power system. This National Load Dispatch Center Project (NLDCP) is part of the National Grid Infrastructure Development Project (NGIDP) which also comprises the upgrading of substations, the improvement of the transmission network…
By implementing this project the expected benefits are: Reduction in technical losses (proper control and management of power plants and substations) Reduction in energy not served (reduced losses on account of faster restoration in case of outages) Reduction of commercial losses (thievery of energy) Better integration of intermittent renewable energy sources (wind, solar...) Reduction in maintenance cost Prediction of maintenance Better asset management Efficient controlling of tie-lines (for interconnection with neighboring countries) Improvement of the quality of electricity delivered Improvement of staff capacity
sur le même thèmePublished on21 November 2014Published on30 June 2017Published on26 September 2012
sur le même outil financierPublished on18 April 2016Published on04 April 2016Published on25 March 2015