Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 11 of 11 for “"voltage angle"”.
-
Power System Control with Distributed Flexible AC Transmission System Devices
… sensitivities of power system quantities such as voltage magnitude, voltage angle, bus power injections, line power flows, and real power losses with respect to line impedance. These sensitivities enable us to identify and develop appropriate applications for the use of D-FACTS devices for the …
-
Intelligent distribution fault location using voltage magnitude measurements
… These sensors allow the capture of fast-sampled 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 only collect voltage data, …
-
Synchronized Measurement of Machine Rotor Angle and Its Application
The internal voltage angle of a generator is an important parameter that indicates the stability, both transient and steady-state, of the generator. This paper proposes a method of measuring and synchronizing the internal angle using a microprocessor and an optical encoder installed on the shaft of …
-
Adaptive out of step relay algorithm
A peninsular power company's extra high voltage (EHV) transmission grid and the rest of the country behave as a two machine system for the following two types of disturbances loss of a large generator in the southern region of the peninsular power company faults on the 500 kV interconnections …
-
Investigation into voltage and angle stability of a hybrid HVAC-HVDC power network
… affecting power systems network, namely, the voltage stability, transient stability and small signal stability. The voltage stability study was conducted using series of load flows at various levels to plot the VP and QV curves, and the results were used to analyze the systems proximity and …
-
High Accuracy Real-time GPS Synchronized Frequency Measurement Device for Wide-area Power Grid Monitoring
… and transmits calculations of frequency, voltage magnitude and voltage angle to the remote servers via the Internet. Compared with its commercial counterpart Phasor Measurement Unit (PMU), FDR provides less expensive version for networked high-resolution real-time synchronized. The …
-
Power Systems Analysis in the Power-Angle Domain
… power systems dynamic analysis in the power-angle domain has been hinted at by previous researchers, but this may be the first published document to develop detailed techniques by which entire power systems can be represented and solved in the power-angle domain. With the widespread …
-
Specification, Placement, and Control of Fault Current Limiters In Power Systems
… systems is enhanced and the allowable range of voltage-angle differences is expanded during synchronization. The optimal placement of FCLs in a power system with a ring structure is also proposed. With this optimal placement, fault currents in any location can be limited, while the maximum …
-
Next Generation Frequency Disturbance Recorder Design and Timing Analysis
… the FDR provides high accuracy frequency, voltage magnitude and voltage angle data to the remote servers. Although the current FDR design is up to the standard in terms of the measurement accuracy and portability, it is of interest to further the research into alternative architectures and …
-
Wide Area Power System Monitoring Device Design and Data Analysis
… study is to take a first in depth look at the angle data collected by FDRs. Different data conditioning techniques are proposed and tested before one is chosen. The chosen technique is then used to extract useable angle data for angle analysis on eight generation trip events. The angle …
-
State Estimation and Voltage Security Monitoring Using Synchronized Phasor Measurements
… to provide synchronized phasor measurements of voltages and currents from widely dispersed locations in an electric power grid. The commercialization of the global positioning satellite (GPS) with accuracy of timing pulses in the order of 1 microsecond made possible the commercial production of …