Covers the design of bus support structures and connectors. The types of maintenance programs utilized for substation equipment. The profile of substation structures and equipment has become an increasingly important aspect to consider in substation layout. Technical specification construction of 3311 kv primary substations. Substation equipment and functions equipment type function substation. Offshore substation design development of standards. It protects other substation equipment from lightning and switching surges by suppressing them to ground. A substation is a part of an electrical generation, transmission, and distribution system. Dc power is used to feed essential services such as circuit breaker trip coils and associated relays, supervisory control and data acquisition scada. Lightning arrestors also placed in the substation between both the ends of major equipment such as power transformers for protection. All rus borrowers rus electric staff effective date.
With gis experience spanning 50 years across a wide range of industries and applications, ge is a leader in the. Overview electrical substations play a disproportionately large role in the overall power system reliability. Pge is a proven leader of fullservice substation construction and engineering concept design, economic evaluations, physical design, civilstructural engineering, ground grid design and equipment specifications. Figure 5 depicts the layout of a ring bus configuration, which is an extension of the sectionalized bus. Table 2 provides a general list of substation equipment types, their basic function, and the category of substations that they would be used in. Orientation of equipment and a complete anchor bolt setting plan. Substation construction manual page 2 of 57 reference ni000401r122 ver 3 ergon energy corporation limited abn 50 087 646 062 ergon energy queensland pty ltd abn 11 121 177 802 4. Overview purpose of substations substation equipment substation control house substation bus configurations. Ergon energy corporation limited abn 50 087 646 062 ergon energy queensland pty ltd abn 11 121 177 802. The electrical substation does not have a single circuit but is composed of numerous outgoing and incoming circuits which are connected to a busbar i. The substation design manual is not intended to replace asset management standards, but rather to act as a reference document that crossreferences existing standards and process documentation and plugs any gaps where asset management documentation does not exist.
The substation receives electrical energy directly from generating stations through incoming power supply lines while it delivers electricity to the consumers. Basic substation configurations and the components avo training. The mvlv substations are a node of a a substation is a part of an electrical generation, transmission, and distribution system. The electricity substation is a network of electrical equipment which is connected in a structured way in order to supply electricity to end consumers. Bsee and boem as to what additional standards may be applicable to offshore substation design as the agencies update their regulations. Overall equipment cabinet dimensions, including height above equipment base.
The layout of the substation is very important since there should be a security of supply. Electrical switchyard is usually a part of substation where electricity is transferred from one voltage to another for the transmission and distribution purpose. Between the generating station and consumer, electric power may flow through several substations at different voltage levels. Bus bar is the important components in the substation. Preliminary equipment layout is done before piping study. Data and requirements shall be provided in accordance with ansi 693. All dimensions are in metres m unless stated otherwise. The key steps in the substation designing include switchingsystem, planning and placing of equipment, selection of components as well as ordering, support of engineers, structural design, the design of electrical layout, protection of relay, and major apparatus ratings. Ge provides a full range of gasinsulated substations gis for utilities and industries worldwide.
Substation design guide a pdh online course for engineers. Covers switch, arrestor, and instrument transformer specification and application. A singleline operating diagram gives a simplified schematic circuit diagram of the substation. Substation layout diagrams provide scale drawings of the location of each piece of equipment in a substation, in both plan and elevation. Electrical substation components, workings and their functions. Reliability of substation configurations daniel nack, iowa state university, 2005. Substation equipment an overview sciencedirect topics. Substation layout sizing and layout, control panel plan and elevation design, equipment foundation and oil containment design. Numbers of breakers, disconnect switches, transformers, auxiliaries, protective devices, lines and other equipment. Technical guide the mvlv transformer substations abb group.
Intended audience the course is intended for engineers, project engineers, technicians, and designers with an electrical discipline focus involved in the engineering, design, construction, operation and maintenance of electric substations. Introduction sub stations are important link between generating stations and distribution networks. Design study for 3311 kv substation, distribution and protection in the city of kenya. Fundamentals of electrical substations and switchgear. Substations generally have switching, protection and control equipment, and transformers. While individual utilities may have their own format, there is a high degree of standardization of these types of drawings worldwide, for contractual and tendering purposes. Pge is committed to high quality services using a combination of internal and strategic external resources. Arrangement of equipments and piping is a primary activity of a piping engineering department. An operating diagram is typically used to describe a substation. Ac power is required for substation building small power, lighting, heating and ventilation, some communications equipment, switchgear operating mechanisms, anticondensation heaters and motors.
A bypass switch is provided so service can continue during circuit breaker maintenance. This report includes preliminary specifications for the supply of submarine 34. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. Protected data subject to disclosure restrictions see protected rights notice on cover page. They step down the ehv to hv as per the requirement of the customers. Following the switching components, the lines are connected to one or. The low voltage distribution networks are supplied from substation transformers that represent the last. Electrical substation equipment for transferring of electrical power from generating unit to distributing units various types of electrical equipment are required. Edms, printed to an electronic drawing set adobe pdf and issued to the. Distribution substation a distribution substation transfers power from the transmission system to the distribution system of an area.
Covers general issues related to site design, foundation design and control house design. The substation is the part of an electrical supply system which transmits the high voltage from the generating substations to the local distribution networks. Basic substation layout incoming subtransmission lines electric power path through substation outgoing distribution lines lightning arresters. Location of the surrounding loads in the layout of both the current and the. Consequently, it is important to consider equipment removal routes during the structure layout. It gives an overall view of what equipment is at the substation and how it is connected. Design study for 3311 kv substation, distribution and. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. The station may consist of transformers, switches, circuit breakers and other auxilliary equipment. Appendix d substation and cable route design report. These recommendations will take into account the critical nature of the substation to the operation of the wind farm, while also considering costs of the structures when recommending standards. In the past, large lattice and boxtype structures supporting overhead strain buses were commonly used.
Chapter 7 33 kv switching substation, savar of dpbs1 7. Introduction in our present society that is greatly dependent on electric power, substation technology plays an important role in the stable and highquality transmission of electric energy. An electrical substation is an installation with electrical equipment capable of interrupting or establishing electrical circuits and changing the voltage, frequency, or other characteristics of the electrical energy flowing in the circuits. Shielding methods do not permit an arc to form between the conductor and ground. Part 1 also provides an overview of substation major equipment, explaining the mission, and arrangement of each component. Hv substation project brief history et bihl d i 1987 f th il ti f l hv mv d established in 1987 for the realization of complex hv, mv and lv projects. Electrical substation components list diagram, working.
Equipment layout and piping layout is done as per general industry practice as well as piping design basis, process flow. Typical substation electrical design services include. Design guide for rural substations usda rural development. The electrical substation design is a complex method with full of engineer planning. Often the most desirable arrangement has the main buses at higher. The probability of a fault during circuit breaker maintenance. Stability of the system, reliability of power depends on the type of layout chosen and components used in the sub stations.
The equipment like bus bars, isolator, power transformer etc. Purpose of substations in general, a substation is a power system facility that contains power system. There are nonshielding methods, such as use of lightning arresters and spark gaps. Designers must balance technical performance with cost, whilst still considering maintainability and availability to keep the overall lifecycle. Substation layout substation layout single line diagram check. Where switchyard means collection of equipment where high voltage electricity is switched using of various components.
Substation design and equipment selection saiee1865v, 3 cpd credits. Fundamentals of modern electrical substations part 1. Short circuit and current capacity of equipment, bus and other equipment compliance with projects scope and requirements number of feeders and load circuits. The input for a distribution substation is typically at least two transmission or subtransmission lines. Substation substation a station in the power transmission system at which electric power is transformed to a conveniently used form. Substations vary in size and voltage levels and can cost anywhere from a few hundred thousand to tens of millions of dollars. To better understand the importance of electrical substations, lets start with a discussion about the structure of the power systems and. What is a electrical substation definition, layout, and. Advances in substation equipment technology have led to increased unit capacity, smaller size, and environmental preservation.
Substation interview questions answers engineering tutorial. Single source, single feeder substation the oneline diagram of a singlesource, singlefeeder substation with the minimum equipment used. Expert instructors with decades of substation design experience will guide you in learning how to develop reliable substation. Final equipment locations are decided based on all piping layout requirements are considered.
Substation design challenges an analysis of substation design criteria can demonstrate the bene. Distribution voltages are typically medium voltage, between 2. In an ideal substation all circuits and equipment would be duplicated such that following a fault, or during maintenance, a connection remains available. In the ring bus a sectionalizing breaker has been added between the two open bus ends. 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. All cad drawings including equipment layout, communications. Different layouts for substation radial, tapped, lilo. This document outlines the primary design standard for transgrid substations. The portfolio includes gis solutions from 60 to 800 kv, along with secondary products to maximize switchgear and network operation. This fundamental course leads you through a stepbystep study of the substation design and construction process. Overhead lines and substation equipment can be protected against direct strokes to a considerable extent by using earth or ground wires, which shield the equipment.
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