Sustainable and Smart Distribution Networks: Topology Design

In this thesis the build plans for a new residential neighbourhood are used as a basis for a distribution network of the neighbourhood of the future. Data is used to simulate power flows and an analysis is given on the current method used by DSO's. Furthermore the discussion is opened to suggest different methods for constructing sustainable...

Optimal placement and sizing of battery energy storage using the genetic algorithm

Voltage drop and rise at network peak and off-peak periods are one of the major power quality problems in low voltage distribution networks. Additionally, the ever increasing demand for electricity along with the other requirements are driving modern day power systems towards more distributed generation (DG). Integration of large scale DG can be...

Voltage support strategies in a rural low voltage network with high photovoltaic penetration

The rapidly increasing penetration of rooftop PV systems in rural LV distribution networks calls for the attention of DNOs in order to secure end-user voltage range. In times of high photovoltaic generation and low load consumption, voltage at PCCs may exceed the specified upper limit and make PV inverters trip. This phenomenon hinders further...

Response of Low Voltage Networks with High Photovoltaic Systems Penetration to Transmission Network Faults

The need for fault ride-through (FRT) capability is not yet documented for the low voltage connected DG. The realization that an increase in the capacity of installed DG power in the specific voltage level can trigger disconnection, in case of transmission faults, of massive amounts of power from DG and jeopardize system stability is forming. In...

Impacts of Distributed Generation on remuneration of the Electricity Distribution Company in Spanish Electric System

The contribution of Distributed generation (DG) to Electric Power Systems is evident, as it contributes to all major drivers of System´s sustainability (open market, security of supply and environment) propagated by EU directives. However, it is still not clear what impacts DG has on the Distribution System Operator´s (DSO) operations, which is...

The influence of distributed generation on protection schemes in medium voltage networks

Nowadays, the amount of distributed generation (DG) units is increasing rapidly. Most of them are represented by microturbines, combined heat and power (CHP) plants and synchronous generator. At this moment, IEEE 1547 standard states that DG clearing time should be based on the during-fault voltage range. However, DG units will be required to be...

Dynamic and Transient study in Mid Voltage networks in relation to Distributed Generations

By increasing numbers of distributed generation, that moreover also become larger individually, the need arises for a better picture of the behavior of such generators during transients like short circuits, load changes, synchronizing faults, island operation, phase opposition, etc. In this thesis simulations of short circuits, load changes and...