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Micro wind turbines currently have the majority share of micro (electricity) generation installations in Ireland. These technologies are being installed predominantly in rural environments, and current applications to the Distribution Services Operator (DSO) for connection of all types of micro generator stand at less than 500. Poor market dissemination of information and research findings compounded...
The increasing demand on the urban distribution network (UDN) imposed by distributed generation (DG), such as renewable sources and Combined Heat and Power (CHP), will impact on the operation of the UDN in a number of areas including fault current level and voltage stability. In general most DG connections are small CHP plants employing reciprocating engine or gas turbine as a prime mover directly...
The paper describes a method to control the rotor-side and grid side converters in a DFIG when subjected to the effects of network voltage unbalance conditions. Multi Frequency Resonant Controllers are incorporated into the grid side and rotor side converters to assist in the control functions. The Resonant Controllers are tuned to twice the network frequency to assist in the control of power and...
The capacity of Combined Heat and Power (CHP) generation connected to Urban Distribution Network (UDN) will increase significantly as a result of EU government targets and initiatives. CHP generators can have a significant impact on the power flow, voltage profile and the power quality for customers and electricity suppliers. The connection of CHP plant at UDN creates a number of technical problems...
This study presents a protection scheme for protecting the series inverter of a unified power quality conditioner (UPQC). The proposed scheme protects the series inverter from overcurrents and overvoltages, which appear during short-circuit faults on the load side of the UPQC. The main protection element is a crowbar connected across the secondary of the series transformer and consists of a pair of...
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