Power Substation
Protection scheme for the substation with a single supply from the utility
The utility supply voltage depends on both availability and consumer requirements. The consumer transformer is connected delta on the high-voltage side and grounded wye on the low-voltage side. A fused-disconnect… Read more
Jan 07, 2019 | By Edvard Csanyi
Power Substation
Analysis of faults in machine and transformer windings
The analysis of faults in the synchronous machine and transformer windings presents a special difficulty because the effective impedances of the affected windings under internal fault conditions are not normally… Read more
Jan 02, 2019 | By Edvard Csanyi
Premium Content
Check out each plan’s benefits and choose the membership plan that works best for you or your organization.
Limited time offer! - Save 15% on Pro Membership Plan with discount code LRN15
Log In »Purchase »
Directional protection relays applied to multiple power sources, parallel circuits and loops
Directional protection is usually applied to distribution systems that contain multiple power sources, parallel circuits and rings/loops. For such systems it is absolutely necessary to have protection against fault currents…...
Premium Membership Required
This technical article/guide requires a Premium Membership. You can choose an annually based Plus, 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.Check out each plan’s benefits and choose the membership plan that works best for you or your organization.
Limited time offer! - Save 15% on Pro Membership Plan with discount code LRN15
Log In »Purchase »
Dec 27, 2018 | By Edvard Csanyi
Energy and Power
15 bad situations that may lead to catastrophic explosion of a capacitor bank
Some of the failure problems associated with capacitor banks are already known since they happen often. A few of the failures are traceable to the original source and sometimes that… Read more
Dec 23, 2018 | By Edvard Csanyi
Protection
The Essentials Of Voltage Transformers (Advanced Theory and Practice)
The most common voltage sources for power system measurements and protections are either wound transformers (voltage transformers) or capacitive divider devices (capacitor voltage transformers or bushing potential devices). Some new… Read more
Dec 19, 2018 | By Edvard Csanyi
Energy and Power
The essence of LV circuit breakers – Releases, tripping curves, characteristics and limitation
A circuit breaker is both a circuit-breaking device that can make, withstand and break currents whose intensity is at most equal to its rated current (In), and a protection device… Read more
Dec 17, 2018 | By Edvard Csanyi
Power Substation
Protection scheme for remote private substation with small generator
Connections of private substations to utilities are made more complicated with the addition of private-owned generation facilities. The choice of relays and their placement must be made to ensure adequate… Read more
Dec 12, 2018 | By Edvard Csanyi
Energy Generation
Protection Of The Power System Heart – The Generator
This technical article gives key points about the generator protection. To recover the generator from various kinds of faults, the generator protection scheme of the plant must be designed in such… Read more
Dec 05, 2018 | By Edvard Csanyi
Protection
Connection schematics of voltage transformers for protective applications
Voltage transformers would have primaries that are either connected directly to the power system (VTs) or across a section of a capacitor string connected between phase and ground (coupling capacitor… Read more
Nov 28, 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… Read more
Nov 26, 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… Read more
Nov 21, 2018 | By Edvard Csanyi
Electrical Lectures
What is polarity and why it’s important for transformers and protection relays
Polarity is very important for the operation of transformers and protection equipment. A clear understanding of polarity is useful in understanding and analyzing transformer connections and operations as well as… Read more
Nov 19, 2018 | By Edvard Csanyi
Electrical Lectures
Power transformer protection relaying (combined differential & restricted earth fault)
In previous article we described how overcurrent, restricted earth fault (REF) and differential protection of a transformer can be applied and explained their schemes. This part continues with other, also… 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… Read more
Nov 12, 2018 | By Edvard Csanyi
High Voltage
Check out each plan’s benefits and choose the membership plan that works best for you or your organization.
Limited time offer! - Save 15% on Pro Membership Plan with discount code LRN15
Log In »Purchase »
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…...
Premium Membership Required
This technical article/guide requires a Premium Membership. You can choose an annually based Plus, 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.Check out each plan’s benefits and choose the membership plan that works best for you or your organization.
Limited time offer! - Save 15% on Pro Membership Plan with discount code LRN15
Log In »Purchase »
Nov 07, 2018 | By Ali Sepehri
