This document discusses high voltage equipment and power transmission. It begins by listing references on high voltage engineering. It then provides equations showing that transmission losses are directly proportional to resistance and inversely proportional to the square of the transmission voltage. To reduce losses, the transmission voltage should be increased. It also discusses key differences between high and low voltage equipment, including larger insulation systems, components, cooling requirements, and overvoltage protection for high voltage.
Dielectric Properties of Insulating Materialsrajendra purkar
Dielectric Properties of Insulating Materials, in Material Science
different material used in Power system as Insulators and their required properties and applications.
High voltage technology & insulation testingZeeshan Akhtar
About HV Transmission, distribution, Voltage level classification, Insulation testing.
Part 1
What is High Voltage?
Why Needed
Levels of Voltages
Application of High Voltage
Electrical Insulation and Dielectrics
Part 2
Design & Test Issues for High Voltage
Aircraft Electric Power System
Introduction to the importance of HV in electric actuator systems
Basic review of HV design
Discussion of test methods
Summary
Part 3
Voltage Testing & Partial Discharge Measurement For Power Cable Accessories
Introduction
Ac Test After Installation
Acrf Test System
Schematic Diagram Of Test System
Arallel Operation Mode Of Test System
Artial Discharge Methods & Principle.
Iscussion & Conclusion.
Multi-Physics Analysis of a Refractory Metal ACOperated High Temperature Heat...SIMULIA
Electrically operated high temperature furnaces and reactors are used in many industrial manufacturing processes such as sintering or single crystal growth in order to allow for the required process conditions. In view of their outstanding characteristics refractory metals are ideally suited as materials for the resistive heating elements. Nevertheless, significant and lifetime- limiting irreversible deformations of these elements can be frequently observed which are assumed to be caused by a combination of temperature expansion, electromagnetic forces, and high temperature creep effects. In order to study this undesired behavior, a multi-physics model of a particular three-phase AC heating element of a sintering furnace is formulated and implemented within Abaqus. It accounts for the primary involved coupled physical mechanisms such as the harmonic electrical field problem, the thermal problem governed by Joule's law, thermal expansion, high temperature creep and harmonic forces caused by the electromagnetic field along with field dependent constitutive behavior. Since in general solving the fully coupled problem on a 3D domain is computationally demanding and Abaqus lacks functionality in the field of electromagnetism, a semi-analytical approach for consideration of time-harmonic electromagnetic forces within mechanical analysis is developed in the present work. The model implemented as a userdefined extension for Abaqus is computationally very attractive since it avoids discretization of the medium surrounding the heater. Furthermore, some aspects of modeling coupled physical problems of different characteristic time-scale are briefly discussed. Results from application of the model are in good qualitative agreement with in-situ observations and confirm the relevance of considering electromagnetic forces within analysis of high temperature furnaces.
Dielectric Properties of Insulating Materialsrajendra purkar
Dielectric Properties of Insulating Materials, in Material Science
different material used in Power system as Insulators and their required properties and applications.
High voltage technology & insulation testingZeeshan Akhtar
About HV Transmission, distribution, Voltage level classification, Insulation testing.
Part 1
What is High Voltage?
Why Needed
Levels of Voltages
Application of High Voltage
Electrical Insulation and Dielectrics
Part 2
Design & Test Issues for High Voltage
Aircraft Electric Power System
Introduction to the importance of HV in electric actuator systems
Basic review of HV design
Discussion of test methods
Summary
Part 3
Voltage Testing & Partial Discharge Measurement For Power Cable Accessories
Introduction
Ac Test After Installation
Acrf Test System
Schematic Diagram Of Test System
Arallel Operation Mode Of Test System
Artial Discharge Methods & Principle.
Iscussion & Conclusion.
Multi-Physics Analysis of a Refractory Metal ACOperated High Temperature Heat...SIMULIA
Electrically operated high temperature furnaces and reactors are used in many industrial manufacturing processes such as sintering or single crystal growth in order to allow for the required process conditions. In view of their outstanding characteristics refractory metals are ideally suited as materials for the resistive heating elements. Nevertheless, significant and lifetime- limiting irreversible deformations of these elements can be frequently observed which are assumed to be caused by a combination of temperature expansion, electromagnetic forces, and high temperature creep effects. In order to study this undesired behavior, a multi-physics model of a particular three-phase AC heating element of a sintering furnace is formulated and implemented within Abaqus. It accounts for the primary involved coupled physical mechanisms such as the harmonic electrical field problem, the thermal problem governed by Joule's law, thermal expansion, high temperature creep and harmonic forces caused by the electromagnetic field along with field dependent constitutive behavior. Since in general solving the fully coupled problem on a 3D domain is computationally demanding and Abaqus lacks functionality in the field of electromagnetism, a semi-analytical approach for consideration of time-harmonic electromagnetic forces within mechanical analysis is developed in the present work. The model implemented as a userdefined extension for Abaqus is computationally very attractive since it avoids discretization of the medium surrounding the heater. Furthermore, some aspects of modeling coupled physical problems of different characteristic time-scale are briefly discussed. Results from application of the model are in good qualitative agreement with in-situ observations and confirm the relevance of considering electromagnetic forces within analysis of high temperature furnaces.
This Presentation provides information about generator protection. All types of protection system which is used for generator are included in this presentation
At the outset we wish to thank you for the curtsey and excellent response from you and active interest in taking a comprehensive view of modern safe Lightning Protection / Earthing and the underlying scientific principles as we posted in our Linkedin Profile, which is for your ready reference.
This presentation contains information about some basic electrical parameters such as Voltage, Current, EMF, PD, Electric Power, Energy Ideal & Practical Sources, Types of Resistance, Heating Effect, Magnetic effect & Chemical effect of Electric Current etc.
Generation and transmission of electric energy – voltage stress –
testing voltages-AC to DC conversion – rectifier circuits – cascaded
circuits – voltage multiplier circuits – Cockroft-Walton circuits –
voltage regulation – ripple factor – Van de-Graaff generator.
This presentation contains basic of capacitor, series-parallel connection, charging & discharging of capacitor, Types of Capacitor & its applications etc.
Working Principle of Induction Heating
Induction Coil Equivalent Circuit
Inverter Configurations
Power Control Techniques
Induction Cook-tops
Calculation of Power & Frequency Requirements
Advantages of Induction Heating
Major Passive Components of An Induction Heating System :
Matching Transformers
High Power Capacitors
Induction Coils
Applications of Induction Heating
This Presentation provides information about generator protection. All types of protection system which is used for generator are included in this presentation
At the outset we wish to thank you for the curtsey and excellent response from you and active interest in taking a comprehensive view of modern safe Lightning Protection / Earthing and the underlying scientific principles as we posted in our Linkedin Profile, which is for your ready reference.
This presentation contains information about some basic electrical parameters such as Voltage, Current, EMF, PD, Electric Power, Energy Ideal & Practical Sources, Types of Resistance, Heating Effect, Magnetic effect & Chemical effect of Electric Current etc.
Generation and transmission of electric energy – voltage stress –
testing voltages-AC to DC conversion – rectifier circuits – cascaded
circuits – voltage multiplier circuits – Cockroft-Walton circuits –
voltage regulation – ripple factor – Van de-Graaff generator.
This presentation contains basic of capacitor, series-parallel connection, charging & discharging of capacitor, Types of Capacitor & its applications etc.
Working Principle of Induction Heating
Induction Coil Equivalent Circuit
Inverter Configurations
Power Control Techniques
Induction Cook-tops
Calculation of Power & Frequency Requirements
Advantages of Induction Heating
Major Passive Components of An Induction Heating System :
Matching Transformers
High Power Capacitors
Induction Coils
Applications of Induction Heating
Cable sizing to withstand short circuit currentLeonardo ENERGY
In a cable a short circuit causes very extreme stresses which are proportional to the square of the current:
• A temperature rise in the conducting components subjected to current flow such as conductor, screen, metal sheath, armour. Indirectly the temperature of adjoining insulation and protective covers also increases,
• electro-magnetic forces between the current-carrying components.
The temperature rise is important for its effect on ageing, heat pressure characteristics etc., and should be limited to a permissible short-circuit temperature. The thermo-mechanical effects of the current shall also be considered.
For a given short-circuit duty therefore the short-circuit capacity of a cable installation is to be investigated with respect to all these parameters. For multi-core cables in most instances the thermal effect - related to the magnitude of fault current and clearance time - is the critical parameter, since the cable will normally have enough mechanical strength. With single-core cables however, in addition, the mechanical effect - related to the magnitude of the peak short-circuit current - is of such significance that, next to the thermal, the mechanical with- stand of both cable and its supports is to be investigated.
Also accessories must be rated with respect to thermal and mechanical short-circuit stresses.
The short-circuit withstand of a cable system is not quantitatively defined with regard to permissible number of repeated short circuits, degree of deformation or destruction or impairment quality. It is expected, however, that a cable installation will remain safe in operation and that any deformation remains within tolerable limits even after several short circuits.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
3. Transmission losses in 3-phase AC current:
∆Pt = 3 I2 R …(1)
Regardless of the capacitive current, I along the same transmission wire :
…(2)
By substituting (2) to (1), then:
∆Pt = Total transmission losses (watts)
I = Current on the transmission wire (A)
R = Resistance of wire transmission per phase (Ohm)
P = Load power at the receiving end of the transmission (watts)
V = Transmitter receiving phase (Volt) phase voltage
Cos = Load power factor
CosrV
P
I
3
22
2
CosrV
RP
tP
4. •
Transmission losses are directly proportional to the
amount of resistance and inversely proportional to the
square of the transmission voltage, so that the
reduction of losses is done by increasing the
transmission voltage
22
2
CosrV
RP
tP
6. Main Things
Differentiate High Voltage Equipment From Low Voltage
• Isolation System
• The size of equipment components that conduct current
• Cooling system
• Splicing of conductors
• Overvoltage protection
7. High Voltage Equipment Insulation System
E = Electric field pressure in insulation
V = Equipment working voltage Cooling system
S = Spacing of the electrodes Overvoltage protection
Insulation construction is made in such a way as to be able to bear high electric field
pressure by:
1. Enlarge the dimensions of the insulating material
2. Control the electric field pressure
s
V
E
9. Controlling Electric Field
Pressure
1. Arranging equipment parts to form the electrode arrangement such that the electric field pressure in the
insulation system decreases
2.
2. Making voltage leveling electrodes that function to even out the voltage distribution in the insulation system
• Internal leveling electrodes
• External leveling electrodes
• Intermediate leveler electrodes
11. High Voltage Equipment
Conductors
I = Current flowing at the core of the cable(A)
R = Cable core resistance(Ohm)
P = Load power losses (Watts)
RIP 2 THERMAL
INCREASE
TEMPERATURE
CONDUCTOR
CABLE ISOLATION
Spread heat from
the core less cable
Minimize core resistance
Increase the size of the
cross section
13. Voltage Levels That The
Equipment May Carry
1. Continuous work voltage
2. Voltage over frequency power
“if there is a short circuit of one phase to the ground which
results in a voltage increase in the other two phases”
3. Overvoltage voltage surge
4. Over voltage surges of lightning