High Voltage
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Main components of a Gas Insulated Substation (GIS) you should know about
Gas-insulated substations (GIS) use circuit breakers, disconnect switches, and grounding switches, and have various means of indicating their position, either opened or closed, so the same as in air-insulated substation (AIS). Operation of a GIS uses most of the same…...
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Nov 23, 2018 | By Edvard Csanyi
High Voltage
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The raising technology of high voltage vacuum circuit breakers (that could replace SF6…)
Because of great harmfulness of greenhouse effect, SF6 gas has to be limited. It is necessary to develop high voltage vacuum circuit breaker to replace SF6 circuit breaker. Insulating structure and arc-characteristics of vacuum interrupter are the key to development…...
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Nov 07, 2018 | By Ali Sepehri
Premium Content
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Four special capacitor applications in EHV systems you should know about
There are many other applications in the industry where capacitors are used for power factor correction or energy storage purposes. These include arc furnaces, resistance welding equipment, single-phase capacitor start, capacitor run motors, lighting applications and special applications of capacitors…...
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Oct 26, 2018 | By Edvard Csanyi
Power Substation
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7 essential functions of a digital substation automation system (SAS)
As you already know, every power substation consists of a group of HV devices whose individual sizes depend on substation operation voltages, which is called the primary equipment, as well as by a lot of low voltage smaller components, which…...
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Oct 05, 2018 | By Edvard Csanyi
Premium Content
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DC versus AC power transmission with reference to bulk-energy transfer
High voltage transmission systems has a dual purpose, i.e. system interconnection and bulk-energy transfer. With reference to system interconnection, the need to operate the whole system in perfect synchronism often prevents the transfer of power by alternating current. The reasons…...
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Sep 14, 2018 | By Edvard Csanyi
Power Substation
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Single phase and three phase capacitive-load switching in transmission & distribution systems
The interruption of capacitive currents is a usual switching case, unlike the making and breaking of fault currents. The usual cases, in which a capacitive current is switched, are switching of unloaded overhead transmission lines, local substation components, cables, capacitor…...
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Aug 30, 2018 | By Edvard Csanyi
Energy and Power
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The technology behind distributed control system (DCS) in a thermal power plant
A DCS is the heart of a thermal power plant’s instrumentation and control systems. DCS stands for ‘distributed control system’, and the term ‘distributed’ means that several processors are operating together. This is usually achieved by dedicating tasks to different…...
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Aug 09, 2018 | By Edvard Csanyi
Medium Voltage
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Nine topologies of medium voltage ring-main systems you should know about
Power systems are constructed can be operated as radial systems, ring-main systems or meshed systems. This technical article deals with nine most common topologies of ring-main systems, their characteristics and applications. Ring-main systems are common in the medium voltage range…....
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Jul 27, 2018 | By Edvard Csanyi
Premium Content
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Current and voltage digital transformation in a modern substation protection and automation
Developments in communication have done much to realize the digital substation, but to realize a full digital substation it is necessary to have everything in digital form. Whilst much substation protection, control, and automation technology has always been digital (trip…...
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Jul 25, 2018 | By Edvard Csanyi
Power Substation
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Reasons and duties for switching in power transmission and distribution systems
The purpose of a power system is to transport and distribute the electric energy generated in the power plants to the consumers in a safe and reliable way. Generators take care of the conversion of mechanical energy into electric energy,…...
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Jul 12, 2018 | By Edvard Csanyi
Premium Content
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Measurements of bad impulsive noise in HV substation caused by partial discharge (PD) sources
The phenomenon of impulsive noise is generated by partial discharge (PD) sources in high voltage substations. A PD generates a current impulse, acoustic noise, visible and ultraviolet (UV) light and electromagnetic radiation, and accordingly its presence can be detected via…...
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Jun 22, 2018 | By Edvard Csanyi
Premium Content
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Critical role of time synchronisation in IEC 61850 based digital protection systems
The needs and exact precision of time synchronization in IEC 61850 based digital protection systems have evolved. With new technologies and better distribution methods, most modern intelligent electronic devices (IEDs) include at least one form of time synchronization. Many devices…...
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Jun 08, 2018 | By Edvard Csanyi
Premium Content
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Earthing In a Nutshell (Classification, Isolated Neutral, Methods Of Neutral Grounding)
The term earthing or grounding means connecting the non-current-carrying parts of the electrical equipment or the neutral point of the supply system to the general mass of earth in such a manner that all times an immediate discharge of electrical…...
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May 18, 2018 | By Edvard Csanyi
Cables
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High Voltage Cables In a Nutshell (Technology, Bonding, Installation and Service)
Differences between the electrical characteristics of overhead transmission lines and high voltage AC cables are fundamental and must be considered. This article gives a brief introduction to cable technology, with focus on the topics which must be considered when designing…...
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May 04, 2018 | By Edvard Csanyi
Premium Content
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The Essentials Of Low Voltage Installations, Loads and Loads Modelling
Electrical installations are power systems aimed at final low voltage electricity consumption in homes, offices, and small companies. In electrical installation, electricity is usually taken from the public distribution network. Recently the concept of electrical installation has slightly evolved, since the…...
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Apr 20, 2018 | By Edvard Csanyi
