Abstract
The Moroccan electricity network has been designed and sized to work with high power outputs connected to the transmission network. This it delivers a unidirectional power flow from production to consumption. In this configuration, the electricity network carries electricity from production plants mainly connected to the transmission network to customers through the distribution network. Therefore, voltage-setting devices on the distribution network such as load-adjustable power transformers and medium voltage MV capacitor banks are set and operated. The inclusion of the Decentralized Generation (DG) based on renewable energies can induce a reversal of the power flow on the distribution network. This raises problems of voltage regulation in the presence of renewable energy sources. This article shows the limit of the current voltage regulation deployed solutions and exposes a solution for adjusting the voltage on the distribution grid in the presence of renewable energy sources connected to medium voltage MV. We will apply ETAP software to a real network located in the eastern zone for the conducted investigation. Later, an optimization approach aiming to minimize losses and improve the voltage plan will be presented at the end. Â
Highlights
Electrical power transmission and distribution systems operate at multiple voltage levels
Decentralized Generation (DG) are distinguished from centralized production units by the fact that they are most often connected to the distribution network, and by their "small size", since their main characteristic is intermittency [5,6]
We have presented the Moroccan electrical system and the voltage regulation mode at the distribution network
Summary
Electrical power transmission and distribution systems operate at multiple voltage levels. The economic optimization of the network, as well as the respect of the operating conditions were possible by decreasing the section of the conductors in end lines [1,2-3]. Depending on the power flows of consumers and producers, the currents can decrease, reverse or even increase in the opposite direction. The Integration of decentralized generation can reverse the direction of power flow. The increase number in decentralized generation, which is highly variable and geographically dispersed, requires a new grid voltage plan that will allow conversion to the energy mix. This article shows the limit of the current regulation and exposes a vision of adjustment of the voltage on the distribution electricity grid in the presence of decentralized generations
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