It is now recognized that many large wind farms will employ doubly fed induction generator (DFIG) variable speed turbines. A number of such are already in operation and more planned or under construction. With the rising penetration power into electricity networks, increasingly comprehensive studies required to identify interaction between farm(s) system. These require accurate models turbines their associated control protection circuits. dynamic model has been derived, which can be used...

Energy supply systems are usually considered as individual sub-systems with separate energy vectors. However, the use of Combined Heat and Power (CHP) units, heat pumps electric boilers creates linkages between electricity networks. Two combined analysis methods were developed to investigate performance networks an integrated whole. These two decomposed electrical-hydraulic-thermal calculation techniques in forms power flow simple optimal dispatch. Both based on models electrical network,...

Synchronous and fixed-speed induction generators release the kinetic energy of their rotating mass when power system frequency is reduced. In case doubly fed generator (DFIG)-based wind turbines, control operates to apply a restraining torque rotor according predetermined curve with respect speed. This not based on there negligible contribution inertia system. A DFIG was modified introduce response turbine. Simulations were used show that proposed system, turbine can supply considerably greater than

An assessment on the capability of a doubly fed induction generator (DFIG) wind turbine for frequency regulation is presented. Detailed aerodynamic, structural and electrical dynamic models were used in this study. A control loop acting deviation was added to inertia contributing order enhance support from DFIG turbine. The possibility de-loading provide primary secondary response discussed. droop controller examined where operating electronic torque set point below its maximum speed pitch...

Peer-to-peer (P2P) energy sharing allows the surplus from distributed resources (DERs) to trade between prosumers in a community Microgrid. P2P is being becoming more attractive than conventional peer-to-grid (P2G) trading. However, intensive sensing and communication infrastructures are required either for information flows local market or building central control system. Moreover, existing pricing mechanisms could not ensure all participants gain economic benefits. This work proposed...

This paper describes a model of photovoltaic (PV) generation suitable for studying its interactions with the power system. Experimental results suggest that maximum point tracking part control system PV generator dominates dynamic behavior These experimental are used to develop and validate proposed model. It is shown accurately reflects following both small fast changes in irradiance AC grid voltage. The designed be integrated simulation program.

This paper addresses the design and implementation of a novel control scheme for doubly fed induction generator (DFIG), type employed with wind turbines, to provide support power system operation. It is shown that this controller provides DFIG-based farm operational compatibility conventional stations, ability contribute voltage recovery following network faults, stabilizer capability improves overall damping, contributing short-term frequency loss generation. A simple but realistic test...

A Spatial–Temporal model (STM) was developed to evaluate the impact of large scale deployment plug-in electric vehicles (EVs) on urban distribution networks. The STM runs based integration power system analysis and transportation analysis. Origin–Destination (OD) from intelligent research used EV mobility. Based technical market information provided by EU MERGE project output OD analysis, a Monte Carlo simulation method within obtain charging load each busbar over time. aims facilitate...

Peer-to-Peer (P2P) energy trading describes flexible trades between peers, where the excess from many small-scale Distributed Energy Resources (DERs) is traded among local customers. The feasibility of applying P2P to reduce costs for consumers, and increase income DER producers in a community microgrid was investigated. Three representative market paradigms were proposed, i.e. bill sharing, mid-market rate an auction based pricing strategy. Each them specified detailed business models,...

With the increasing use of renewable energy in Great Britain (GB) power system, role electric vehicles (EVs) contributes to primary frequency response was investigated. A tool developed estimate EV charging load based on statistical analysis type, battery capacity, maximum travel range and state charge. simplified GB system model used investigate contribution EVs response. Two control modes were considered: disconnection (case I) discharge stored II). For case II, characteristic charger also...

Soft Open Points (SOPs) are power electronic devices installed in place of normally-open points electrical distribution networks. They able to provide active flow control, reactive compensation and voltage regulation under normal network operating conditions, as well fast fault isolation supply restoration abnormal conditions. A steady state analysis framework was developed quantify the operational benefits a with SOPs generic injection model used determine optimal SOP operation using an...

Three configurations of voltage source converter multi-terminal HVDC transmission for large offshore wind farms are studied. The voltage-current characteristics the converters shown and operation with different power output from is discussed. control system designed to achieve automatic coordination between without need fast communication them. tested through simulations using PSCAD/EMTDC experiments on a three-terminal test rig. simulation experimental results show good agreement.

Soft Open Points (SOPs) are power electronic devices installed in place of normally-open points electrical distribution networks. They able to provide active flow control, reactive compensation and voltage regulation under normal network operating conditions, as well fast fault isolation supply restoration abnormal conditions. Two control modes were developed for the operation an SOP, using back-to-back voltage-source converters (VSCs). A mode with current provides independent real power. a...

Many efforts are recently being dedicated to developing models that seek provide insights into the techno-economic benefits of battery storage coupled photovoltaic (PV) generation system. However, not all consider operation PV – system with a feed-in tariff (FiT) incentive, different electricity rates and unit cost. An customer whose demand is supplied by grid connected benefiting from FiT incentive simulated in this paper. The modelled as an existing new For better understanding operation,...

In many power systems, in particular Great Britain (GB), significant wind generation is anticipated and gas-fired will continue to play an important role. Gas-fired generating units act as a link between the gas electricity networks. The variability of is, therefore, transferred network by influencing demand for generation. Operation GB integrated considering uncertainty forecast was investigated using three operational planning methods: deterministic, two-stage stochastic programming,...

As the number of electric vehicles increases, impact their charging on distribution networks is being investigated using different load profiles. Due to lack real data, majority these studies are making assumptions for vehicle demand In this paper a two-step modelling framework was developed extract useful information hidden in EVs event data. Real data were obtained from Plugged-in Midlands (PiM) project, one eight ‘Plugged-in Places’ projects supported by UK Office Low Emission Vehicles...