Bus bar arrangement in substation pdf

CHAPTER 4 SUBSTATION CONFIGURATION RELIABILITY

Bus bar arrangement in substation pdf

Bus-Bar Arrangements in an Electric Circuit (With Diagram. Bus-bars+arrangement+in+substation datasheet, cross reference, circuit and application notes in pdf format., Integrated GIS technology up to 170 kV Modular switchgear in prefabricated housing . ABB and 45 years of GIS innovation 2 Product brochure Integrated GIS technology ABB is a leader in power and automation technologies that enable utility and industry customers to improve their performance while lowering environmental impact. The ABB Group of companies operates in around 100 countries and.

CONTROL & RELAY PANEL

presentation on substation layout and BUS bar arrangement.. aspects of substation design for both Greenfield and Brownfield substation projects to meet the performance expected by Ergon Energy. The manual is applicable for all substation projects regardless of internal/external design delivery mode. The substation design manual is not intended to replace Asset Management Standards, but rather, Substation) 7 Single Bus-bar Arrangement The simplest arrangement. Consisting of a single set of a bus bar for the full length of the switchboard are connected to all the generators, transformer and feeders. Fig. 1 . 8 Disadvantages 1.Failure any bus or circuit breaker effect entire substation. 2.Difficult to do any maintenance. 3.Bus cannot be extended without completely de-energizing.

There are many different electrical bus system schemes available but selection of a particular scheme depends upon the system voltage, position of substation in electrical power system, flexibility needed in system and cost to be expensed.. The Main Criterias to be Considered During Selection of one Particular Bus – Bar Arrangement Scheme. Simplicity of system. in these ppt i will try to explain the classification of substation & busbar arrangement

WBSETCL / TECH SPEC / Rev.-1 Page 2 of 104 Control & Relay Panel TECHNICAL SPECIFICATION FOR CONTROL & RELAY PANEL 1.00 SCOPE: 1.01 The specification covers design, engineering, manufacture, testing & supply delivery at site of Control and relay Board and protection relay panels inclusive of … 3.Duplicate bus-bar system: In large stations, it is important that breakdowns and maintenance should interfere as little as possible with continuity of supply. In order to achieve this objective, duplicate Bus Bar Arrangement in Power Station is used in important stations. Such a system consists of two bus-bars, a “main bus-bar” and a “spare” bus-bar (see Fig. 16.4).

There are many different electrical bus system schemes available but selection of a particular scheme depends upon the system voltage, position of substation in electrical power system, flexibility needed in system and cost to be expensed.. The Main Criterias to be Considered During Selection of one Particular Bus – Bar Arrangement Scheme. Simplicity of system. Substations use different types of bus bar arrangements, which depend upon the application, reliability of the supply and cost of installation. In every substation, bus bar plays a pivotal role to connect different circuits. However ,switching is possible in the power system with the help of …

TYPES OF BUS BAR SYSTEM. 1 Single Busbar System . Single busbar system is as shown below in figure . Single Busbar System. a. Merits. 1. Low Cost. 2. Simple to Operate. 3. Simple Protection. b. Demerits. 1. Fault of bus or any circuit breaker results in shut down of entire substation. 2. Difficult to do any maintenance. 3. Bus cannot be extended without completely deenergizing substations. c Busbar protection 7SS5 and 7VH8 Generator/motor protection 7UM5 Transformer protection 7UT5 Protection and substation automation SIMEAS R Fault recorders (Oscillostores) SICAM PCC Energy automation based on PC and LAN (Profibus) Fig. 4: Siemens Protection and Substation Control comprises these systems and product ranges * Windows is a registered product of Microsoft Protection and Substation

This single bus - bar arrangement consists of only one bus - bar and all the incoming feeders and outgoing distributors are connected to this bus - bar only. All the fuses, circuit breakers, generators and transformers are connected to this as shown in the following figure. 110 kV gas-insulated ring busbar installation Stadtwerke Lübeck, Substation Rothebek, Germany Project report ´Stadtwerke Lübeck´ ranks among Germany’s leading regional energy providers. They supply approximately 135,000 households in the Hansa city of Lübeck, plus surrounding communi-ties, with electricity, gas, water and district heating.

substation) should be avoided. Multi-busbar arrangements with sectioning facilities allow the system to be split or connected through a fault limiting reactor. It is also possible to split a system using circuit breakers in a mesh or ring type substation layout although this requires careful planning and operational procedures. Cost Double bus – single breaker arrangement - With the tie breaker operated normally closed, each circuit may be supplied from either bus via its switches. →Provides increased operating flexibility and improved reliability.-Bus and circuit crossing in substation are possible

Single Line Diagram of Substations maintenance or faults. Bus-Bar arrangement nothing but a combination of Bus and Circuit Breaker. Key Words: Busbar, Bus Layout, Switching Arrangement, Types of Busbar, Substation layout I. INTRODUCTION The purpose of this paper is to provide a general guide to the design and selection of proper bus bar scheme as per

This single bus - bar arrangement consists of only one bus - bar and all the incoming feeders and outgoing distributors are connected to this bus - bar only. All the fuses, circuit breakers, generators and transformers are connected to this as shown in the following figure. 08/11/2011В В· Bus-bars are the important components in a sub-station. There are several bus-bar arrangements that can be used in a sub-station. The choice of a particular arrangement depends upon various factors such as system voltage, position of sub-station, degree of reliability, cost etc.

18/06/2017 · The Bus scheme is the arrangement of overhead bus bar and associated switching equipments in a substation. The operational flexibility and reliability of the substation … 8. Substations: Classification of substations, Transformer substation, Pole mounted substation, Underground substation, Symbols for equipments in substations, Equipments in a transformer substation, Bus-bar arrangements in substations, Terminal and through substations, Key diagrams of 66/11 kV substation and 11/400 kV indoor substation.

The electricity substation is a network of electrical equipment which is connected in a structured way in order to supply electricity to end consumers. There is numerous electrical substation components like outgoing and incoming circuitry each of which having its circuit breakers, isolators, transformers, and busbar system etc for the smooth functioning of the system. Integrated GIS technology up to 170 kV Modular switchgear in prefabricated housing . ABB and 45 years of GIS innovation 2 Product brochure Integrated GIS technology ABB is a leader in power and automation technologies that enable utility and industry customers to improve their performance while lowering environmental impact. The ABB Group of companies operates in around 100 countries and

The electricity substation is a network of electrical equipment which is connected in a structured way in order to supply electricity to end consumers. There is numerous electrical substation components like outgoing and incoming circuitry each of which having its circuit breakers, isolators, transformers, and busbar system etc for the smooth functioning of the system. In electric power distribution, a busbar (also bus bar) is a metallic strip or bar, typically housed inside switchgear, panel boards, and busway enclosures for local high current power distribution. They are also used to connect high voltage equipment at electrical switchyards, and low voltage equipment in battery banks.They are generally uninsulated, and have sufficient stiffness to be

Such bus-bar arrangement is employed for switchboards, small and medium sized substations, small power stations and dc stations. Type # 2. Single Bus-Bar Arrangement with Bus Sectionalization: The bus-bar may be sectionalized by a circuit breaker and isolating switches so that a fault on one part does not cause a complete shutdown. In large generating stations, where several units are installed, it is a … Substations use different types of bus bar arrangements, which depend upon the application, reliability of the supply and cost of installation. In every substation, bus bar plays a pivotal role to connect different circuits. However ,switching is possible in the power system with the help of …

Substation Arrangement Designs Electrical Substation

Bus bar arrangement in substation pdf

Bus Bar Arrangement of Substation Electrical Substation. Answer: It is observed that corona discharge occurs mostly at sharp corners, edges near the conductor fixing points.Corona rings also called grading rings are hallow metallic rings having large diameter and will have a smooth surface. These corona rings are placed suitably to metal clamps, joints to encircle the conductors surface., Busbar are the important components in a sub-station. There are several Busbar Arrangements in Substations that can be used in a sub-station. There are several Busbar Arrangements in Substations that can be used in a sub-station..

Generating Station Switchyard (Substation)

Bus bar arrangement in substation pdf

Protection and Substation Control. Busbar protection 7SS5 and 7VH8 Generator/motor protection 7UM5 Transformer protection 7UT5 Protection and substation automation SIMEAS R Fault recorders (Oscillostores) SICAM PCC Energy automation based on PC and LAN (Profibus) Fig. 4: Siemens Protection and Substation Control comprises these systems and product ranges * Windows is a registered product of Microsoft Protection and Substation https://simple.wikipedia.org/wiki/Busbar This single bus - bar arrangement consists of only one bus - bar and all the incoming feeders and outgoing distributors are connected to this bus - bar only. All the fuses, circuit breakers, generators and transformers are connected to this as shown in the following figure..

Bus bar arrangement in substation pdf


The electricity substation is a network of electrical equipment which is connected in a structured way in order to supply electricity to end consumers. There is numerous electrical substation components like outgoing and incoming circuitry each of which having its circuit breakers, isolators, transformers, and busbar system etc for the smooth functioning of the system. Substation Arrangement Designs - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Substation Arrangement Designs

Substation Arrangement Designs - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Substation Arrangement Designs In electric power distribution, a busbar (also bus bar) is a metallic strip or bar, typically housed inside switchgear, panel boards, and busway enclosures for local high current power distribution. They are also used to connect high voltage equipment at electrical switchyards, and low voltage equipment in battery banks.They are generally uninsulated, and have sufficient stiffness to be

TYPES OF BUS BAR SYSTEM. 1 Single Busbar System . Single busbar system is as shown below in figure . Single Busbar System. a. Merits. 1. Low Cost. 2. Simple to Operate. 3. Simple Protection. b. Demerits. 1. Fault of bus or any circuit breaker results in shut down of entire substation. 2. Difficult to do any maintenance. 3. Bus cannot be extended without completely deenergizing substations. c The electricity substation is a network of electrical equipment which is connected in a structured way in order to supply electricity to end consumers. There is numerous electrical substation components like outgoing and incoming circuitry each of which having its circuit breakers, isolators, transformers, and busbar system etc for the smooth functioning of the system.

3.4: Classification of Bus Bar The bus bar arrangements are classified into the following categories – (a) Single bus bar scheme (b) Single sectionalized bus bar scheme (c) Double bus bar single breaker scheme (d) Double bus bar double breaker scheme (e) Breaker and half scheme (f) Mesh scheme (g) Main and transfer bus scheme (a) Single bus bar scheme Fig:3.1: Single bus bar scheme In this layout. The single bus arrangements are now connected together with a center circuit breaker that may be normally open or closed. Now, in the event of a breaker failure or bus bar fault, the entire station is not shut down. Breaker bypass operation can also be included in the sectionalized bus configuration. Figure 3: Sectionalized Bus

TYPES OF BUS BAR SYSTEM. 1 Single Busbar System . Single busbar system is as shown below in figure . Single Busbar System. a. Merits. 1. Low Cost. 2. Simple to Operate. 3. Simple Protection. b. Demerits. 1. Fault of bus or any circuit breaker results in shut down of entire substation. 2. Difficult to do any maintenance. 3. Bus cannot be extended without completely deenergizing substations. c Such bus-bar arrangement is employed for switchboards, small and medium sized substations, small power stations and dc stations. Type # 2. Single Bus-Bar Arrangement with Bus Sectionalization: The bus-bar may be sectionalized by a circuit breaker and isolating switches so that a fault on one part does not cause a complete shutdown. In large generating stations, where several units are installed, it is a …

Single Line Diagram of Substations Urban substations are usually built in brick, whereas rural ones are often installed externally directly on the MV pylon. – private substations: these can often be considered as terminal type substations, i.e. substations where the MV line ends at the installation point of the substation itself.

SINGLE BUS SYATEM Advantages: 1.Simple in Design 2.Less Expenditure Disadvantages: 1.In case of bus fault or bus bar isolator fault or maintenance total Substation is out of service. 2.In case of maintenance of transformer circuit breaker the associated transformer has also to be shut-down. Similarly for Line also. substation) should be avoided. Multi-busbar arrangements with sectioning facilities allow the system to be split or connected through a fault limiting reactor. It is also possible to split a system using circuit breakers in a mesh or ring type substation layout although this requires careful planning and operational procedures. Cost

The electricity substation is a network of electrical equipment which is connected in a structured way in order to supply electricity to end consumers. There is numerous electrical substation components like outgoing and incoming circuitry each of which having its circuit breakers, isolators, transformers, and busbar system etc for the smooth functioning of the system. The example presented in Fig. 21.4 illustrates the role played by circuit-breakers in determining line connection arrangements. The substation layout of Fig. 21.4a shows four transmission lines, each terminating in two circuit-breakers. This arrangement allows each line to be connected to busbar A and/or B, depending on circuit-breaker status.

International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 02 Feb -2017. e-ISSN: 2395 -0056. www.irjet.net. p-ISSN: 2395-0072 SINGLE BUS SYATEM Advantages: 1.Simple in Design 2.Less Expenditure Disadvantages: 1.In case of bus fault or bus bar isolator fault or maintenance total Substation is out of service. 2.In case of maintenance of transformer circuit breaker the associated transformer has also to be shut-down. Similarly for Line also.

Protection and Substation Control

Bus bar arrangement in substation pdf

Substation Switching Schemes. Integrated GIS technology up to 170 kV Modular switchgear in prefabricated housing . ABB and 45 years of GIS innovation 2 Product brochure Integrated GIS technology ABB is a leader in power and automation technologies that enable utility and industry customers to improve their performance while lowering environmental impact. The ABB Group of companies operates in around 100 countries and, Answer: It is observed that corona discharge occurs mostly at sharp corners, edges near the conductor fixing points.Corona rings also called grading rings are hallow metallic rings having large diameter and will have a smooth surface. These corona rings are placed suitably to metal clamps, joints to encircle the conductors surface..

Interview Question of Bus Bar system of Substation

Bus Bar Arrangements in Sub Station iiteeeestudents. WBSETCL / TECH SPEC / Rev.-1 Page 2 of 104 Control & Relay Panel TECHNICAL SPECIFICATION FOR CONTROL & RELAY PANEL 1.00 SCOPE: 1.01 The specification covers design, engineering, manufacture, testing & supply delivery at site of Control and relay Board and protection relay panels inclusive of …, Basic Substation Configurations and the Components . 2 Moderator n Ron Spataro AVO Training Institute Marketing Manager. 3 Q&A n Send us your questions and comments during the presentation. 4 Today’s Presenter n Greg Richmond AVO Training Specialist. 5 n Power Generating Systems n Grounding n Types of Substations n Substation Equipment Substation Configurations and its Components . 6 Power.

TYPES OF BUS BAR SYSTEM. 1 Single Busbar System . Single busbar system is as shown below in figure . Single Busbar System. a. Merits. 1. Low Cost. 2. Simple to Operate. 3. Simple Protection. b. Demerits. 1. Fault of bus or any circuit breaker results in shut down of entire substation. 2. Difficult to do any maintenance. 3. Bus cannot be extended without completely deenergizing substations. c Single Line Diagram of Substations

Bus bar is the important components in the sub-station. There are several bus bar arrangements that can be used in a sub-station. The choice of a particular arrangement depends upon various factors such as system voltage, position of sub-station, degree of reliability, flexibility & cost etc. The commonly used bus bar schemes at Sub Stations: in these ppt i will try to explain the classification of substation & busbar arrangement

Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect (for buildings in general E04B 1/94; devices for opening or closing safety wings E05F 1/00; emergency protective circuit arrangements for distribution gear, e.g. bus-bar systems, or for switching devices H02H 7/22) References Informative references Electrical Bus-Bar and its Types Definition: An electrical bus bar is defined as a conductor or a group of conductor used for collecting electric power from the incoming feeders and distributes them to the outgoing feeders.In other words, it is a type of electrical junction in which all the incoming and outgoing electrical current meets.

In a two transformer substation operation of either or both transformers on one infeed together with the facility to take out of service and restore to service either transformer without loss of supply would be a normal design consideration. In general a multiple busbar arrangement will provide greater flexibility than a … The electricity substation is a network of electrical equipment which is connected in a structured way in order to supply electricity to end consumers. There is numerous electrical substation components like outgoing and incoming circuitry each of which having its circuit breakers, isolators, transformers, and busbar system etc for the smooth functioning of the system.

• 3 Phase common single and double bus bar arrangements • Compact design with following outline dimensions: L x W x H: 4150mm x 780mm x 2400mm • Circuit breaker with spring operating mechanism, type CT20 • 3 position Disconnector and Earthing switch (DES) equipped with motor mechanism Urban substations are usually built in brick, whereas rural ones are often installed externally directly on the MV pylon. – private substations: these can often be considered as terminal type substations, i.e. substations where the MV line ends at the installation point of the substation itself.

Before more in-depth discussion about each type of substation it is better to know few common essential features of a substation. Here we discuss about the bus schemes commonly implemented in an electrical substation. The Bus scheme is the arrangement of overhead bus bar and associated switching equipments in a substation. The operational Substations use different types of bus bar arrangements, which depend upon the application, reliability of the supply and cost of installation. In every substation, bus bar plays a pivotal role to connect different circuits. However ,switching is possible in the power system with the help of …

Single Bus arrangement System 6/26/2014 4 Main & Transfer Bus 6/26/2014 5 Main & transfer busbar system Advantage Disadvantage Remarks 1. Low initial & ultimate cost 1. Requires one extra breaker coupler 1. Used for 110kV substations where cost of duplicate bus bar system is not justified 2. TYPES OF BUS BAR SYSTEM. 1 Single Busbar System . Single busbar system is as shown below in figure . Single Busbar System. a. Merits. 1. Low Cost. 2. Simple to Operate. 3. Simple Protection. b. Demerits. 1. Fault of bus or any circuit breaker results in shut down of entire substation. 2. Difficult to do any maintenance. 3. Bus cannot be extended without completely deenergizing substations. c

This single bus - bar arrangement consists of only one bus - bar and all the incoming feeders and outgoing distributors are connected to this bus - bar only. All the fuses, circuit breakers, generators and transformers are connected to this as shown in the following figure. 08/11/2011В В· Bus-bars are the important components in a sub-station. There are several bus-bar arrangements that can be used in a sub-station. The choice of a particular arrangement depends upon various factors such as system voltage, position of sub-station, degree of reliability, cost etc.

18/06/2017 · The Bus scheme is the arrangement of overhead bus bar and associated switching equipments in a substation. The operational flexibility and reliability of the substation … There are many different electrical bus system schemes available but selection of a particular scheme depends upon the system voltage, position of substation in electrical power system, flexibility needed in system and cost to be expensed.. The Main Criterias to be Considered During Selection of one Particular Bus – Bar Arrangement Scheme. Simplicity of system.

layout. The single bus arrangements are now connected together with a center circuit breaker that may be normally open or closed. Now, in the event of a breaker failure or bus bar fault, the entire station is not shut down. Breaker bypass operation can also be included in the sectionalized bus configuration. Figure 3: Sectionalized Bus International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 02 Feb -2017. e-ISSN: 2395 -0056. www.irjet.net. p-ISSN: 2395-0072

in these ppt i will try to explain the classification of substation & busbar arrangement There are many different electrical bus system schemes available but selection of a particular scheme depends upon the system voltage, position of substation in electrical power system, flexibility needed in system and cost to be expensed.. The Main Criterias to be Considered During Selection of one Particular Bus – Bar Arrangement Scheme. Simplicity of system.

In many large transmission substations, the total numbers of lines terminating exceeds one or two dozen. A substation bus scheme is the arrangement of overhead bus bar and associated switching equipment (circuit breakers and isolators) in a substation. The operational flexibility and reliability of the substation greatly depends upon the bus Busbar are the important components in a sub-station. There are several Busbar Arrangements in Substations that can be used in a sub-station. There are several Busbar Arrangements in Substations that can be used in a sub-station.

08/11/2011 · Bus-bars are the important components in a sub-station. There are several bus-bar arrangements that can be used in a sub-station. The choice of a particular arrangement depends upon various factors such as system voltage, position of sub-station, degree of reliability, cost etc. Urban substations are usually built in brick, whereas rural ones are often installed externally directly on the MV pylon. – private substations: these can often be considered as terminal type substations, i.e. substations where the MV line ends at the installation point of the substation itself.

What is Electrical Bus-Bar? Definition & Types of

Bus bar arrangement in substation pdf

Electrical Systems Substation Bus Schemes. International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 02 Feb -2017. e-ISSN: 2395 -0056. www.irjet.net. p-ISSN: 2395-0072, Normally the number of sections of a bus-bar are 2 to 3 in a substation, but actually it is limited by the short-circuit current to be handled. In a sectionalized bus-bar arrangement only one additional circuit breaker is required which does not cost much in comparison to the total cost of the bus-bar system..

Protection and Substation Control

Bus bar arrangement in substation pdf

Electrical busbar and types of bus - bar arrangements. Ans : Electrical busbar is the collector of electrical energy at one location operating at a constant voltage. The busbars used in a substation are either rigid type or flexible type. Rigid busbars are made up of aluminum alloy tubes of 50 to 250 mm diameter and supported on post insulators with clamps and connected at both ends by strain insulators with clamps and connectors. https://en.wikipedia.org/wiki/Electrical_substation In electric power distribution, a busbar (also bus bar) is a metallic strip or bar, typically housed inside switchgear, panel boards, and busway enclosures for local high current power distribution. They are also used to connect high voltage equipment at electrical switchyards, and low voltage equipment in battery banks.They are generally uninsulated, and have sufficient stiffness to be.

Bus bar arrangement in substation pdf

  • Electrical Systems Substation Bus Schemes
  • Generating Station Switchyard (Substation)
  • Electrical busbar and types of bus - bar arrangements

  • Busbar are the important components in a sub-station. There are several Busbar Arrangements in Substations that can be used in a sub-station. There are several Busbar Arrangements in Substations that can be used in a sub-station. aspects of substation design for both Greenfield and Brownfield substation projects to meet the performance expected by Ergon Energy. The manual is applicable for all substation projects regardless of internal/external design delivery mode. The substation design manual is not intended to replace Asset Management Standards, but rather

    SINGLE BUS SYATEM Advantages: 1.Simple in Design 2.Less Expenditure Disadvantages: 1.In case of bus fault or bus bar isolator fault or maintenance total Substation is out of service. 2.In case of maintenance of transformer circuit breaker the associated transformer has also to be shut-down. Similarly for Line also. Bus-bars+arrangement+in+substation datasheet, cross reference, circuit and application notes in pdf format.

    SINGLE BUS SYATEM Advantages: 1.Simple in Design 2.Less Expenditure Disadvantages: 1.In case of bus fault or bus bar isolator fault or maintenance total Substation is out of service. 2.In case of maintenance of transformer circuit breaker the associated transformer has also to be shut-down. Similarly for Line also. Normally the number of sections of a bus-bar are 2 to 3 in a substation, but actually it is limited by the short-circuit current to be handled. In a sectionalized bus-bar arrangement only one additional circuit breaker is required which does not cost much in comparison to the total cost of the bus-bar system.

    Substation) 7 Single Bus-bar Arrangement The simplest arrangement. Consisting of a single set of a bus bar for the full length of the switchboard are connected to all the generators, transformer and feeders. Fig. 1 . 8 Disadvantages 1.Failure any bus or circuit breaker effect entire substation. 2.Difficult to do any maintenance. 3.Bus cannot be extended without completely de-energizing Basic Substation Configurations and the Components . 2 Moderator n Ron Spataro AVO Training Institute Marketing Manager. 3 Q&A n Send us your questions and comments during the presentation. 4 Today’s Presenter n Greg Richmond AVO Training Specialist. 5 n Power Generating Systems n Grounding n Types of Substations n Substation Equipment Substation Configurations and its Components . 6 Power

    Such bus-bar arrangement is employed for switchboards, small and medium sized substations, small power stations and dc stations. Type # 2. Single Bus-Bar Arrangement with Bus Sectionalization: The bus-bar may be sectionalized by a circuit breaker and isolating switches so that a fault on one part does not cause a complete shutdown. In large generating stations, where several units are installed, it is a … layout. The single bus arrangements are now connected together with a center circuit breaker that may be normally open or closed. Now, in the event of a breaker failure or bus bar fault, the entire station is not shut down. Breaker bypass operation can also be included in the sectionalized bus configuration. Figure 3: Sectionalized Bus

    There are various types of bus bar arrangements 1. single bus bar arrangement 2. double bus bar a... In many large transmission substations, the total numbers of lines terminating exceeds one or two dozen. A substation bus scheme is the arrangement of overhead bus bar and associated switching equipment (circuit breakers and isolators) in a substation. The operational flexibility and reliability of the substation greatly depends upon the bus

    Bus bar is the important components in the sub-station. There are several bus bar arrangements that can be used in a sub-station. The choice of a particular arrangement depends upon various factors such as system voltage, position of sub-station, degree of reliability, flexibility & cost etc. The commonly used bus bar schemes at Sub Stations: Such bus-bar arrangement is employed for switchboards, small and medium sized substations, small power stations and dc stations. Type # 2. Single Bus-Bar Arrangement with Bus Sectionalization: The bus-bar may be sectionalized by a circuit breaker and isolating switches so that a fault on one part does not cause a complete shutdown. In large generating stations, where several units are installed, it is a …