Abstract
The continuous growth of distributed generation along the medium voltage distribution networks (MVDN) induces multifaceted technical challenges that have to be addressed by alternative control architecture schemes beyond the centralized strategies and the fit and forget doctrine. The active participation of DG essentially drives the network to pave towards the Smart Grid concept. This paper entails a decentralized control strategy which is based on a sensitivity analysis to stipulate the proper dispatch set-points for the DGs; hence, all nodal voltages are in permissible bounds. An overview of sensitivity approaches is presented and discussed for their adequacy to be used in MVDN. The proposed method is simulated on a 13- Node Test Feeder IEEE benchmark, while its consistency is compared with a centralized scheme.
Highlights
The emphasis on climate change policy across EU has been to cut greenhouse gas emissions through reductions and efficiency savings in the power sector
The power system was designed to accept solely bulk power from the transmission network to the consumers at lower voltages. These networks were designed through deterministic studies considering critical cases so that distribution networks could operate with the minimum amount of controls [Pecas Lopes et al 2007]. This refers to the fit and forget dogma, Decentralized Voltage Regulation in radial Medium Voltage networks with high presence of Distributed Generation Konstantinos Kotsalos which was adopted for the interconnection of Distributed Energy Resources (DER) meaning that DERs did not actively participate in the operation and planning of the power systems
More than a significant technical challenge, it is an evolutionary opportunity to progress towards the Smart grid (SG) concept integrating smart metering, advanced Information and Communication Infrastructures (ICT), Intelligent Electronic Devices (IED) and smart inverters in addition to distribution automation to ensure a proper interface between Distributed Generation (DG) and the electric utilities
Summary
The emphasis on climate change policy across EU has been to cut greenhouse gas emissions through reductions and efficiency savings in the power sector. More than a significant technical challenge, it is an evolutionary opportunity to progress towards the Smart grid (SG) concept integrating smart metering, advanced Information and Communication Infrastructures (ICT), Intelligent Electronic Devices (IED) and smart inverters in addition to distribution automation to ensure a proper interface between DGs and the electric utilities This welcomes the transit to the Active Network Management (ANM) by utilizing the breakthroughs occurring within the framework of SG. The increase of uncertainties (intermittent nature of RES, responsive loads, Storage Systems, self-healing and reconfiguration) and the endeavor to transit to “plug and play” features, imply that a level of distributed intelligence among the DN have to be facilitated Amid to these novel requirements for the future power network, a decentralized control algorithm is proposed which can be implemented into peer-to-peer communication based on the concept of multi-agent based system (MAS). The main notion of the sensitivity analysis is to identify this amount of voltage variation regarding active and reactive power injections or absorptions
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