scispace - formally typeset
Patent

Determining parameters of an equivalent circuit representing a transmission section of an electrical network

Reads0
Chats0
TLDR
In this article, a method for determining an equivalent impedance of a transmission section of an electrical network, including representing the transmission section as having at least two interfaces with other sections of the network, is presented.
Abstract
A method for determining an equivalent impedance of a transmission section of an electrical network, includes representing the transmission section as having at least two interfaces with other sections of the network. For each interface, a voltage phasor and a current phasor flowing through the interface are determined from simultaneously made measurements at the interfaces. From the phasors, the equivalent impedance is calculated. The required simultaneousness of the phasor measurements is achieved by means of Phasor Measurement Units (PMUs) that are synchronized via the Global Positioning System (GPS).

read more

Citations
More filters
Patent

Method and system for managing a power grid

TL;DR: In this article, a smart grid for improving the management of a power utility grid is provided, which includes using sensors in various portions of the power grid, using communications and computing technology, such as additional bus structures, to upgrade an electric power grid so that it can operate more efficiently and reliably and support additional services to consumers.
Patent

Impedance-based arc fault determination device (IADD) and method

TL;DR: In this paper, an Impedance-based Arc-Fault Determination Device (IADD) and a method that, when attached to an electrical node on the power system and through observations on voltage, current and phase shift with a step load change, determine the effective Thevenin equivalent circuit or Norton equivalent circuit at the point of test.
Patent

Electric power transmission network state estimation

TL;DR: In this article, a computer program and system for estimating a state of an electric power transmission network, where time-stamped measurements are made by phasor measurement units (1) located at a first set of locations (11,12) throughout the network, and a plurality of voltage and/or current phasors at a second set of location is estimated, where the locations of the first and second sets of locations are distant from one another.
Patent

Distribution system analysis using meter data

TL;DR: In this paper, a monitoring system includes a first sensor positioned at a first location along a phase conductor line and a second sensor position at a second location along the phase conductors line.
Patent

Estimating a time offset between stationary clocks

TL;DR: In this article, a common view based clock offset between two stationary clocks is calculated based on messages exchanged over a communication network interconnecting the two clocks and without reverting to the global time reference.
References
More filters
Patent

Transmission line dynamic impedance compensation system

TL;DR: In this article, a series impedance compensation system for a set of transmission lines which are used for electrical power transmission, with these parallel lines being protected from the transient faults and dynamic subsynchronous oscillation problems, is presented.
Patent

Method and device for assessing the stability of an electric power transmission network

TL;DR: In this paper, the authors propose a method to assess the stability of an electric power transmission network, where a plurality of substations, buses and lines, and a system protection center are used to determine at least one stability margin value of the transmission network.
Patent

Stability prediction for an electric power network

TL;DR: In this article, the authors present a method, device and computer program product for the prediction of the stability of an electric power network, where the method is executed after a fault or contingency has occurred.
Patent

Power oscillation protection

TL;DR: In this paper, a system protection scheme comprising of at least two system protection terminals, introduced at suitable locations in an electric power system, is described, which is interconnected by a communication system, using a substantially dedicated communication resource.
Book

Computer-Aided Power Systems Analysis

TL;DR: Central Operation and Control of Power Systems General Control Center of a Power System Digital Computer Configuration Automatic Generation Control for a Power system Area Control Error CPS1 CPS2, 10 Min Average Disturbance Conditions Operation without Central Computers or AGC Parallel Operation of Generators Network Power Flows Oversimplified Power Flow (dc Power Flow) Area Lumped Dynamic Model Problems
Related Papers (5)