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A platform for research: civil engineering, architecture and urbanism
Local flexibility markets for distribution network operation
The continuing replacement of fossil fuel-based power generators with renewable intermittent sources like wind and solar has increased the power system’s need for flexibility. Previous research has shown that some of these additional flexibility demands can be met by demand response of residential customers. However, managing residential power consumption for system purposes, i.e. balancing consumption and generation, synchronizes loads and can cause congestion in distribution networks. At the same time, newly installed distributed energy resources, such as electric vehicles, photovoltaic panels and electrical heating systems, are increasing residential power demand. Recent advances in information and communications technology allow distribution system operators (DSOs) to better observe these developments, and could enable them to apply alternative strategies to the classical approach of network expansions, which is becoming increasingly costly in the light of artificial load synchronization. To this end a congestion management mechanism is needed to operate distribution networks cost efficiently in the future. Local flexibility markets have the potential to unlock DSOs access to flexibility resources. Flexibility services could then be used to mitigate potential congestion and increase overall network efficiency and reliability. This thesis addresses issues related to the introduction of local flexibility markets in three parts. The first part examines how reactive power control of inverter-based distributed energy resources can be implemented under current grid codes such that it is compatible with local flexibility markets. Based on this examination, a method for designs of unit-specific local reactive power controllers is proposed, which is able to take distribution network topology and individual customer characteristics into account while requiring no additional information and communication infrastructure. The approach proves robust against overvoltages in a distribution network with a high share of solar ...
Local flexibility markets for distribution network operation
The continuing replacement of fossil fuel-based power generators with renewable intermittent sources like wind and solar has increased the power system’s need for flexibility. Previous research has shown that some of these additional flexibility demands can be met by demand response of residential customers. However, managing residential power consumption for system purposes, i.e. balancing consumption and generation, synchronizes loads and can cause congestion in distribution networks. At the same time, newly installed distributed energy resources, such as electric vehicles, photovoltaic panels and electrical heating systems, are increasing residential power demand. Recent advances in information and communications technology allow distribution system operators (DSOs) to better observe these developments, and could enable them to apply alternative strategies to the classical approach of network expansions, which is becoming increasingly costly in the light of artificial load synchronization. To this end a congestion management mechanism is needed to operate distribution networks cost efficiently in the future. Local flexibility markets have the potential to unlock DSOs access to flexibility resources. Flexibility services could then be used to mitigate potential congestion and increase overall network efficiency and reliability. This thesis addresses issues related to the introduction of local flexibility markets in three parts. The first part examines how reactive power control of inverter-based distributed energy resources can be implemented under current grid codes such that it is compatible with local flexibility markets. Based on this examination, a method for designs of unit-specific local reactive power controllers is proposed, which is able to take distribution network topology and individual customer characteristics into account while requiring no additional information and communication infrastructure. The approach proves robust against overvoltages in a distribution network with a high share of solar ...
Local flexibility markets for distribution network operation
Heinrich, Carsten (author)
2020-01-01
Heinrich , C 2020 , Local flexibility markets for distribution network operation . Technical University of Denmark .
Book
Electronic Resource
English
DDC:
690
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