radial feeder protection panel development

RADIAL FEEDER PROTECTION PANEL DEVELOPMENT

A Review of Radial Feeder Protection Concept

Presented By Guided ByHimanshu H Paghdal Asst.Prof. Manan M Desai Head Of Department

13/28/2016Gujarat Technological University

OUTLINE

TitleAuthorsAbstractTurning research into publicationsThe journal submission processThe peer review processQuestion-and-answer session

04/22/20162A Review of Radial Feeder Protection Concept


ABSTRACT

This paper represents the work done in the field of distribution system. Power distribution systems are the portion of electrical systems that connects consumers to the source of bulk power. Distribution System consists of several substations which includes one or more feeders. Radial feeder system consists of having only one path for power to flow from the source to each consumer. The protective systems of radial feeder are essential for the same. In this paper we understand various protective schemes to avoid malfunctioning of electromechanical relay). Through this paper we are preparing operation of radial feeder protection as real substation environment. Through this protection concept, the students, in addition to getting familiar with the fundamentals of protection, learned how different protection schemes are wired and how they operate in a real power system.


Radial Feeder Distribution System04/22/2016A Review of Radial Feeder Protection Concept4

TURNING REVIEW INTO PUBLICATIONW. T. Huang, T. H. Chen, G. C. Pu, Y. F. Hsu, and T. Y. Guo, Assessment of upgrading existing primary feeders from radial to normally closed loop arrangement, in Proc. 2002 IEEE Power Engineering Society Transmission and Distribution Conf., 2002+ 04/22/20165A Review of Radial Feeder Protection Concept

Types of Protection

1.)Over Current

2.)Under Current

3.)Earth Fault04/22/20166A Review of Radial Feeder Protection Concept

Basic requirement of protectionA protection apparatus has three main functions04/22/20167A Review of Radial Feeder Protection Concept


Simple working Methodology of Protection

Circuit AbbreviationsBus Charged bus barCB Circuit BreakerTrip Coil Tripping coil of CBTrip Contact NC contact of Protective RelayRelay Protective RelayCT Current TransformerFeeder Power Distribution feeder04/22/20168A Review of Radial Feeder Protection Concept

Simple working Methodology of ProtectionVoltage is flowing from Bus bar to Feeder. In between the circuit breaker is installed.the tripping coil of CB is charged by external supply.Here this external voltage is generating from battery. And the voltage is flowing from NC contact of Protective relay to tripping coil of circuit breaker. That means this NC contact of relay is tripping contact for Circuit breaker.The CT (current Transformer) is measuring the actual current flowing from feeder.When the current will rise grater then sated at relay, the relay will trip and supply is going to the CB coil will trip also.And finally the circuit breaker will trip also.04/22/20169A Review of Radial Feeder Protection Concept

Components mounting at Panel

Here is the GA drawing of Panel.Connector is the starting and ending point of all wires.At the connector we have to inject the current from current injection kit.O/C R-1 and O/C R-2 indicators are over load or under load indications.Power On Light is indicating the Power is ON.A-meter is showing the running actual current.O/C R-1is Over load current relay, E/F R is Earth fault tripping relay and O/C R-2 is Under load current relay.04/22/201610A Review of Radial Feeder Protection Concept

Quotation of Components are used in panel manufacturingSoham, 6/11, Govt.Co.Op. Housing Society, 150 Feet Raiya Road, B/h. Kidvainagar, Rajkot 360 005. Email : [email protected], [email protected]. No.Date :26/9/2015To,H.O.D Electrical Dr. Subhas Technical Campus.-JUNAGADH.Subject. Quatation For Radial Feeder Project.Dear Sir,With reference to the above please find our Budgetary Brief proposals as under :BILL OF MATERIAL FOR POWER PANELSr. NoitemRatingQtyPrice of itemTotal price1Over Current Relay (2 OC + 1 EF) Electro Mechanical Relay11kv214500290002Digital Voltage. Meter18508503Digital Amp. Meter18508504MCB 10ka C Curve6A17507505Toggle Switch 2A3451356Relay 2 no+nc6A32758257CT Short Link Terminal1212515008LED indicator 230V AC6452709Push button With Elements68048010Flexible Wire (in meters)1 sqmm201428011Nut, bots, lugs Etc.150050012Panel Box.120002000TOTAL 37440We hope that the offer will be in line with your requirement and favour us with order please feel free to contact us in case you have any quarries.Thanking you,_________________________________For, Niyati EngineersNote: [1] Payment 30% WITH IN 7 DAYS FROM THE DATE OF BILL ,Balance 50% - 30 days credit

Niyati Engineers04/22/201611A Review of Radial Feeder Protection Concept

Wiring Diagram04/22/201612A Review of Radial Feeder Protection Concept

Wiring Connection


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Electromechanical Relay



Wiring Componentso/c , e/f alarmIndicatorSheathed 1 Sq. Mm yellow Co-axial CablesToggle switchOver current relay (inverse) type CDGo/c , e/f Trip indicator o/c , e/f Ampere meterCurrent Injection kitEarth fault relay (inverse) type CDGTimerMCBPanel Cabinet boxLugs230V AC/DC TimerConnectorsDigital Clamp on meterCurrent injection Transformer


Future scopeTripping at ends of Radial FeedersSingle and Three Phase ProtectionFast tripping with communications systemPhase and earth fault protectionVery low overshootDouble-pole or single-pole circuit breaker control

Time delayed tripping without communicationsTime delayed tripping without communications


Radial Feeder Panel Setup


ConclusionFrom this project, we can protect in distribution system by mostly affecting faults like over current and earth fault with the use of over current and earth fault relay. Use of PSM and TSM, we can trip the relay by different types of timing situation and current.

By this set-up, we can study and to understand the basics of terminology. In addition of this project, the electromechanical relay has limited used purpose. We occupied the fault very accurately.04/22/201620A Review of Radial Feeder Protection Concept

Video


04/22/2016A Review of Radial Feeder Protection Concept22Than Q

radial feeder protection panel development

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