With the increasing amount of wind power generation connected to the power grid, the importance of measuring the wind turbines’ power characteristics and power quality characteristics is growing. By capturing this data, one can achieve improved utilization of the turbine by manipulating its control systems in accordance to power grid requirements for voltage/frequency fluctuations and fault con...

With the steadily increasing penetration of distributed generation (DG) in electric power systems, concerns have been raised that reliable and safe electricity supply might be jeopardized by a further deployment of decentralized power plants. In this context, Power Quality (PQ) and more generally the Quality of Supply (QoS) are key issues which have recently gained increased attention. QoS has ...

The flicker and harmonics generated by electric arc furnaces present a problem that is well known to both the steel industry and electrical utilities. This paper presents a method to compensate for measurement errors introduced by current and voltage transformers and anti-aliasing filters in a power quality measurement system. Dynamic compensation may be performed in real time using digital fil...

Voltage sags are the most common power quality disturbance usually associated with power system faults, which can cause huge economic loss, making it the focus of emerging research. The proposed voltage sag detection technique for a single-line-to-ground (SLG) fault is presented using the PMU measurement data for improving the power quality. Various voltage sag detection techniques have been di...

This paper analyses the sources of buyer power and its e¤ect on sellers’ investment in quality improvements. In our model retailers make takeit-or-leave-it o¤ers to a producer and each of them obtains its marginal contribution to total pro…ts (gross of sunk costs). In turn, this depends on the rivalry between retailers in the bargaining process. Rivalry increases when the retailers are less di¤...