115 kv substation design pdf

We design the grid to serve maximum expected peak demand reliably and costeffectively. Gtc anticipates that lattice steel structures, ranging in height from 80 feet to 150 feet, will be used for the 500 kv. B substation standards switching diagram operating numbers bus configuration 7. The ergon energy design philosophy is to provide substations. As2067 substations and high voltage installations exceeding 1 kv ac. Three 115 kv transmission lines delivered electricity to the substation, which then stepped down the voltage and sent it out to the states capital to nearby smaller substations. System planning, design, construction, and protection. Break projected overrun billable hours week 1 2 3 4 5 6 7 8 9 10 11 12. The emf design guidelines are intended for new construction or major reconstruction of electric utility transmission, substation. Improves reliability of the cap transmission system by providing a secondary 115 kv loop feed to the tucson b pumping plants from the valencia substation.

Using the sil concept, three 500 kv or six 345 kv circuits would be required to achieve the loadability of a single 765 kv line. Robust protective relaying scheme design substation configuration. Between the generating station and consumer, electric power may flow through several substations. The diamond ridge substation is a 115 kv main and transfer bus station with a 115 kv 69 subtransmission transformer and a 15 24. The work also includes the installation of a fiber optic cable and associated splices in one of the 115 kv duct lines. Center taps for substation transformers nominal voltage per ansi c84.

All rus borrowers rus electric staff effective date. The first step in planning a substation layout is the preparation of a oneline. Concept tbd no reliability concern bulk power transformer failure because of a 23 kv circuit fault of serving 23 kv. Distribution substation a distribution substation transfers power from the transmission system to the distribution system of an area. Typical 8 kv substation four 4 breaker ring bus w oil circuit breakers. This substation installed to increase the power factor to minimise losses. A substation is a part of an electrical generation, transmission, and distribution system. Distribution voltages are typically medium voltage, between 2. Pge also performed multiple substations print designs, relay settings and communications configuration and commissioning. Ii design criteria for electrical facilities connected to. Adequate lighting must be provided throughout the substation to facilitate the manual operation. A substation standards switching diagram operating numbers bus configuration 6. Milford 115 kv transmission line upgrade project csc biweekly construction report 915 to 92615 overhead vegetation clearing is completed on the north side of the mnr corridor between devon tie and milvon substation.

To better understand the importance of electrical substations, lets start with a discussion about the structure of the power systems and their main components. Chapter iv system planning, design, construction, and protection nei electric power engineering page iv4 the 115 kv voltage level is commonly used to deliver power to subtransmission systems and distribution substations. Substation design florida new control house, two 230 kv lines, 230 115 kv autotransformer, upgraded 115 kv protection and controls for four lines, and upgraded protection for two 115 kv. Drawing title 25251400 singer substation arrangement plan 25251401 singer substation sections 1 and 2 25251402 singer substation section 3 gis enclosure 25251500 singer substation grading plan 25251501 singer substation foundation plan 25251502 singer substation. Dual bushing voltage transformers offered up to 69 kv. Power system structure the typical power system structure is shown in fig. Pdf substation design manual shally gupta academia. Area reliability assessment new england power oct20 sandy pond substation remove distribution load from tertiary windings of transformer and install 115 23 kv substation. The system includes a new 115 kv circuit, a future 115 kv tiein, and a future 38 kv circuit.

Distribution substations michigan technological university. Pof 25 115 kv substation class oilfilled inductive voltage transformer with shield graded insulation. Input voltage may be, for example, 115 kv, or whatever is common in the area. Scopes of engineering were all inclusive including civil, site, grading, drainage, foundations and structural design.

Replacement of transformers and rebuild 23 kv yard. High creep and high strike reliable cycloaliphatic epoxy bushing at 69 kv and lower, porcelain at 115 kv with polymer available as an option. Appendix c table of contents substation drawings singer substation drawing no. Project consisted of a 115 kv 3breaker ring bus configuration expandable to 6 breakers. Fundamentals of modern electrical substations part 1. The input for a distribution substation is typically at least two transmission or subtransmission lines.

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. Bus arrangements reliability cost of configuration available space basic configurations. Early electrical substations required manual switching or adjustment of. Fault and load flows analysis of electricity transmission and. Transrupter ii transformer protector uses the existing relays, structure, and foundation.

The power circuit breakers have an interrupting rating of 63ka and the bus. Specifically, a 765 kv line can reliably transmit 22002400 mw i. Distribution substations are usually characterized by voltages up to 230 kv on the primary side. This material is made available on the basis that it may be necessary for a registered professional. For instance, a utilitys transmission network may include 115 kv and 230 kv transmission lines, while another utilitys distribution network may include both. Covers the layout considerations, bus configurations, and electrical.

Meralco required a highly reliable gis 115 kv substation from a european contractor abbs response 115 kv gis elk04 including. Old 8 kv transmission substation has no breaker failure relaying if line fault occurs and breaker fails, how. Substation design the new 115 kv equipment is in a breakerandahalf configuration with a 3000a main bus and four 2000a bays. The substation component of the project will be based on the arcadia single line diagram see 5. Product overview high voltage instrument transformers. The typical substation built at that time had six circuits that sent out power. Best practices for protection and control applications for. Design guide for rural substations usda rural development. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations. Best practices for protection and control applications for transmission substations. The electric power substation, whether generating station or transmission and distribution, remains one of the most challenging and exciting fields of electric power engineering.