International Electrical Engineering Journal (IEEJ) Vol. 7 (2016) No.3, pp. 2196-2203
... Switching surges are considered as the most severe type of overvoltage originated on the EHV and UHV transmission lines. They are known to have front durations of a few hundred microseconds, through which transmission lines insulation usually shows a minimum strength [1, 2]. Furthermore, switching s ...
... Switching surges are considered as the most severe type of overvoltage originated on the EHV and UHV transmission lines. They are known to have front durations of a few hundred microseconds, through which transmission lines insulation usually shows a minimum strength [1, 2]. Furthermore, switching s ...
understanding voltage stability - Sacramento
... Understanding voltage stability is becoming more important as the frequency of outages caused by voltage instability increases. There has been a lot of new research in the area of voltage stability analytical methods, though it is not nearly as developed as frequency or angular stability. It is all ...
... Understanding voltage stability is becoming more important as the frequency of outages caused by voltage instability increases. There has been a lot of new research in the area of voltage stability analytical methods, though it is not nearly as developed as frequency or angular stability. It is all ...
High Speed Power Line Communication Technology
... speeds in excess of 100Mbps. The potential implementation of PLC, with the main focus on Internet access, is being studied in various European and Asian countries as well as in the United States, and huge markets have begun forming. 1. Power Line Network Power lines assume a wide variety of network ...
... speeds in excess of 100Mbps. The potential implementation of PLC, with the main focus on Internet access, is being studied in various European and Asian countries as well as in the United States, and huge markets have begun forming. 1. Power Line Network Power lines assume a wide variety of network ...
Interconnection Requirements for Transmission Facilities 138 kV
... not permitted. PSE&G operational and maintenance criteria require that cables be terminated on conventional terminators (Pot Heads) and that the cable be connected to the GIS via open bus to air terminals. b. GIS facilities, specifically those that are fed from two or more lines, shall be designed t ...
... not permitted. PSE&G operational and maintenance criteria require that cables be terminated on conventional terminators (Pot Heads) and that the cable be connected to the GIS via open bus to air terminals. b. GIS facilities, specifically those that are fed from two or more lines, shall be designed t ...
Chapter 8 UFSAR Table of Contents
... transformers. The normal power source for the plant auxiliary ac loads comes from the generator bus through two unit auxiliary transformers of identical rating. In the event of a loss of the main generator, the power is maintained without interruption from the preferred power supply by an autotrip o ...
... transformers. The normal power source for the plant auxiliary ac loads comes from the generator bus through two unit auxiliary transformers of identical rating. In the event of a loss of the main generator, the power is maintained without interruption from the preferred power supply by an autotrip o ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) ISSN: 2278-1676
... This figure displays that the damping controller is composed of a gain block, a washout filter, and a lead-lag compensator. The damping controller is designed so as to provide an extra electrical torque in phase with the speed deviation in order to enhance the damping of oscillations [1]. The gain s ...
... This figure displays that the damping controller is composed of a gain block, a washout filter, and a lead-lag compensator. The damping controller is designed so as to provide an extra electrical torque in phase with the speed deviation in order to enhance the damping of oscillations [1]. The gain s ...
Review of Bulk Electric System Definition Thresholds
... As of June 18, 2007, the U.S. Federal Energy Regulatory Commission (FERC) granted NERC the legal authority to enforce Reliability Standards with all U.S. users, owners, and operators of the bulk power system, and made compliance with those standards mandatory and enforceable. ...
... As of June 18, 2007, the U.S. Federal Energy Regulatory Commission (FERC) granted NERC the legal authority to enforce Reliability Standards with all U.S. users, owners, and operators of the bulk power system, and made compliance with those standards mandatory and enforceable. ...
Current flow controller - European Patent Office
... current flow control module and thereby carry out regulation of current flow in each DC power transmission medium. [0010] In embodiments of the invention, the current flow controller may include first and second main switching elements, the first main switching element being operatively connected be ...
... current flow control module and thereby carry out regulation of current flow in each DC power transmission medium. [0010] In embodiments of the invention, the current flow controller may include first and second main switching elements, the first main switching element being operatively connected be ...
Power Safe - ATCO Electric
... materials, such as dry wood, car tires and air, normally act as insulators at lower voltages; however, at high voltages they will conduct electricity. ...
... materials, such as dry wood, car tires and air, normally act as insulators at lower voltages; however, at high voltages they will conduct electricity. ...
Click Here For See Data
... 4. Refrigerator, Air conditioner and Auto Electric CircuitsBlock diagram and Electric circuit of Refrigerator - function of each componentBlock diagram and electric circuit of Air conditioner- function of each component- Electrical circuit diagram of Lighting, Ignition, self starting and Battery ch ...
... 4. Refrigerator, Air conditioner and Auto Electric CircuitsBlock diagram and Electric circuit of Refrigerator - function of each componentBlock diagram and electric circuit of Air conditioner- function of each component- Electrical circuit diagram of Lighting, Ignition, self starting and Battery ch ...
ELEC 401 – Microwave Electronics
... current flowing on both conductors in opposite directions induces magnetic flux density between the conductors, which can be modeled as an inductance along the line; two conductors with finite surface areas and finite separation distance can naturally be modeled as a capacitor between the conduc ...
... current flowing on both conductors in opposite directions induces magnetic flux density between the conductors, which can be modeled as an inductance along the line; two conductors with finite surface areas and finite separation distance can naturally be modeled as a capacitor between the conduc ...
Electric power transmission
Electric power transmission is the bulk transfer of electrical energy, from generating power plants to electrical substations located near demand centers. This is distinct from the local wiring between high-voltage substations and customers, which is typically referred to as electric power distribution. Transmission lines, when interconnected with each other, become transmission networks. The combined transmission and distribution network is known as the ""power grid"" in North America, or just ""the grid"". In the United Kingdom, the network is known as the ""National Grid"".A wide area synchronous grid, also known as an ""interconnection"" in North America, directly connects a large number of generators delivering AC power with the same relative frequency, to a large number of consumers. For example, there are four major interconnections in North America (the Western Interconnection, the Eastern Interconnection, the Quebec Interconnection and the Electric Reliability Council of Texas (ERCOT) grid), and one large grid for most of continental Europe.The same relative frequency, but almost never the same relative phase as ac power interchange is a function of the phase difference between any two nodes in the network, and zero degrees difference means no power is interchanged; any phase difference up to 90 degrees is stable by the ""equal area criteria""; any phase difference above 90 degrees is absolutely unstable; the interchange partners are responsible for maintaining frequency as close to the utility frequency as is practical, and the phase differences between any two nodes significantly less than 90 degrees; should 90 degrees be exceeded, a system separation is executed, and remains separated until the trouble has been corrected.Historically, transmission and distribution lines were owned by the same company, but starting in the 1990s, many countries have liberalized the regulation of the electricity market in ways that have led to the separation of the electricity transmission business from the distribution business.