Power Substation
Typical utility-consumer interconnection configurations
The utility-consumer interconnection provides the path for power flow between supplier (utility) and user (consumer). The interconnection may comprise one or more circuits and is assumed to include voltage transformation. For the purposes of this guide, the interconnection extends from… Read more
Dec 10, 2018 | By Edvard Csanyi
Energy and Power
10 unbalance detection schemes for removing failed capacitor bank from the system
The main purpose of an unbalance detection scheme is to remove a capacitor bank from the system in the event of a failure and fuse operation. This will prevent damaging overvoltages across the remaining capacitor units in the group where… Read more
Nov 26, 2018 | By Edvard Csanyi
High Voltage
With EEP's premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.
TIme Limited! - Save 15% on PRO membership plan with code RMS15.
Upgrade
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…...
Membership Upgrade Required
This content is not available in your premium membership plan. Please upgrade your plan in order to access this content. You can choose an annually based Basic, Pro, or Enterprise membership plan. Subscribe and enjoy studying specialized technical articles, online video courses, electrical engineering guides, and papers.With EEP's premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.
TIme Limited! - Save 15% on PRO membership plan with code RMS15.
Upgrade
Already a member? Log in here
Nov 23, 2018 | By Edvard Csanyi
Power Substation
Coordinating study in protection of utility supply line, transformer and plant main bus/feeder
The installation of a dedicated substation to serve a plant actually involves an interface between the utility and the plant. Close coordination between utility and plant personnel is essential so that relaying, control and other related requirements are identified and… Read more
Nov 21, 2018 | By Edvard Csanyi
Power Substation
Power transformer combined differential and restricted earth fault protection schemes
This technical article explains very important transformer protection methods and schemes: combined differential and REF, overfluxing, tank-earth and oil/gas protection. In previous article we described how overcurrent, restricted earth fault (REF) and differential protection of a transformer can be applied… Read more
Nov 14, 2018 | By Edvard Csanyi
Electrical Lectures
Power transformer protection relaying (overcurrent, restricted earth fault & differential)
The problems relating to transformer temperature rise above an assumed maximum ambient temperature require some means of protection. Let’s summarize the problems and the possible forms of transformer protection that may be used. The considerations for a transformer protection vary… Read more
Nov 12, 2018 | By Edvard Csanyi
Energy and Power
Automatic bus transfer scheme in thermal and nuclear power stations
In order to ensure uninterrupted supply to connected loads in thermal and nuclear power stations, two types of automatic supply transfer schemes are normally used: automatic bus transfer scheme and auto-changeover scheme. This technical article as explained by BHEL deals… Read more
Oct 24, 2018 | By Edvard Csanyi
Medium Voltage
Four Crucial Switching Functions Of a MV Circuit Breaker (Facts You MUST Know)
The demands made on MV power systems, irrespective of the place of use of the circuit breakers, vary widely in nature. All these functions cannot obviously be performed with the same efficiency. Thus, finally any circuit breaker design can only… Read more
Oct 17, 2018 | By Edvard Csanyi
Power Substation
The essentials of LV/MV/HV substation bus overcurrent and differential protection
The substation bus and switchgear are the parts of the power system used to direct the flow of power to various feeders and to isolate apparatus and circuits from the power system. These parts include the busbars, circuit breakers, fuses,… Read more
Oct 10, 2018 | By Edvard Csanyi
Power Substation
With EEP's premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.
TIme Limited! - Save 15% on PRO membership plan with code RMS15.
Upgrade
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…...
Membership Upgrade Required
This content is not available in your premium membership plan. Please upgrade your plan in order to access this content. You can choose an annually based Basic, Pro, or Enterprise membership plan. Subscribe and enjoy studying specialized technical articles, online video courses, electrical engineering guides, and papers.With EEP's premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.
TIme Limited! - Save 15% on PRO membership plan with code RMS15.
Upgrade
Already a member? Log in here
Oct 05, 2018 | By Edvard Csanyi
Medium Voltage
Coordination analysis for a typical 13 kV distribution feeder of several lines
A typical 13 kV feeder of several lines at a distribution substation is shown in Figure 1. This is supplied from a 115 kV line through a 15/20/25 MVA transformer protected by a high-side fuse. Only one of the four… Read more
Oct 01, 2018 | By Edvard Csanyi
Power Substation
MV/LV transformer protection against temperature rise, overloads, short-circuit & overvoltages
When selecting the type of transformer correctly electrical engineer needs to know its different electrical and thermal properties and the resistance to stresses due to faults or normal service of the transformer itself. This is crucial to know. The transformer… Read more
Sep 26, 2018 | By Edvard Csanyi
High Voltage
Busbar protection schemes for distribution substations
Busbars play an important role in power transmission and distribution. They are employed as a central distribution point for all feeders. In the case of a fault, current on the busbar becomes high, resulting to mechanical destruction which would affect… Read more
Sep 24, 2018 | By Edvard Csanyi
Monitoring
Secondary equipment you should always consider when retrofitting existing HV substation
This approach assumes retrofitting and upgrading old substation secondary equipment such as intelligent electronic devices (IEDs), monitoring sensors, power apparatus, communication protocol and operating standards to improve the overall performance or reduce cost without disrupting the continuity of service. For… Read more
Sep 17, 2018 | By Edvard Csanyi
Power Substation
Applying CTs in protection schemes for transformers, generators, machines etc.
Various types of instrument transformers are currently in use on the basis of the varied applications of these devices. The construction aspects and sizing play an important role in the selection of proper types of both CTs and VTs. The… Read more
Sep 05, 2018 | By Edvard Csanyi
