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This paper presents a two stage error detection technique for a power system time series data. It implements a local similarity method to isolate an anomalous time series data, and further applies a window scanning technique to detect instances of inconsistent data segments. The requirement for few parameter definitions and small computation time makes this technique attractive for data error detection...
In creating entirely fictitious electric grids, there need to be metrics associated with their design that qualify their use in power systems research. In specifying these measures, the questions “What metrics matter for a given study and why?” should be answered. This paper extends the previously developed synthetic network base models for energy economic studies and aims to outline which economic...
High quality synchrophasor data ensure that mission-critical applications produce trustworthy results during grid monitoring. Hence, there is a need for risk assessment activities to screen incoming data for errors, and decide if erroneous portions of data be either rejected or passed on to the dependent-applications. Visualization of prototyped PMU data errors provides a means for better identifying...
Due to the increasing utilization of lightweight gas turbine units and renewable energy resources, the power grid is shifting towards a situation with less inertia, which results in the decline in system primary frequency responses and threatens the grid reliability. However, the capability of fast-acting storage devices to provide frequency response brings the operational flexibility into system...
As the increasing utilization of wind resources and lightweight gas turbine units, the power grid is shifting towards a situation with declining system inertia, which causes a larger frequency deviation after disturbances and threatens the reliability of the grid. Thus, we devote this work to develop an appropriate tool to determine the economic value of the inertia to the systems. To do so, we discretize...
Wide-area situational awareness of grid operators and regional reliability coordinators for large-scale interconnected power systems are essential to prevent broad cascading outages. The need to enhance the power system situational awareness has been increasingly acute over the last decade as the grid evolves dramatically. The fast installation of phasor measurement units (PMUs) over the world generates...
Discussion of the future of the Smart Grid brings with it issues regarding the current level of distribution system visibility. Phasor Measurement Units (PMU) have been proliferating throughout the electric power grid in order to support future distribution system analysis. One type of PMU is the Frequency Disturbance Recorder (FDR); it records voltage magnitude, frequency, and phase angle at the...
The detection and location of high impedance faults has historically been a difficult endeavor due to the low currents produced. However, the recent advent of distributed voltage monitoring devices, enabling access to fast-sampled, expansive voltage measurements throughout a distribution network, can ease this task. This paper considers the potential to use these distribution level devices to detect...
The advent of large-scale power system software packages has made a crucial impact on tasks performed both in industry and research domains. However, additional analysis on the results in an external program is commonly necessitated for a variety of applications. This requires importing and managing the resulting data into an external platform, increasing user effort and rendering the process cumbersome...
Wide-Area Measurement Systems (WAMS) are being implemented in order to help increase situational awareness within the electric grid. These systems use Phasor Measurement Units (PMUs), devices which can measure the voltage and current within the power system. One kind of PMU is the Frequency Disturbance Recorder (FDR), which measures voltage magnitude, frequency, and phase angle at 10 data samples...
In an effort to increase situational awareness in the electric power grid, Wide-Area Measurement Systems (WAMS) are being implemented. These systems allow the capture of fastsampled voltage data such as frequency, voltage magnitude, and voltage angle measurements in a low-cost, easily deployable manner. Traditional fault location methods use both current and voltage data. Voltage monitoring devices...
This paper addresses the topic of automatically computing cable layout designs of large scale wind farms. A network of cables in a wind farm's electrical collector system collects power generated by turbines and brings to the wind farm substation. Frequently, sections of the land area of a large wind farm are restricted for excavating and burying these cables, i.e. trenching. Such restrictions might...
One viable option for the visualization of bus-based power system data is contouring. As contouring research progresses, more computationally efficient methods must be developed. A new algorithm presented here uses the concept of creating a unique influence distance for each bus. The distance is based on the closest g number of buses, instead of previous methods that use the same influence distance...
The paper summarizes theoretical methodology and selected simulation results developed by CRA International in the context of supporting the US Department of Energy in conducting the congestion study of the Eastern interconnection of the US grid. The novel methodology described in the paper introduces a functional definition of a power transmission corridor and develops a methodology to systematically...
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