Romania - Free GIS data

Romania area: 559308090 numgeometries: 1 gid: 194175 objectid: 170234 iso: ROU name: Romania num_children: 41 geom_area: 31.416412760707487Get price

Software GIS de cartografiere, analiza a datelor spatiale

Esri Romania a fost fondata in anul 1999 ca o companie privata, pentru a continua distributia produselor Esri in Romania, activiatate inceputa de Geosystems Romania in 1993. Prin urmare, Esri Romania are o prezenta continua de mai mult de 25 ani in Romania. Esri Romania este membru al Grupului de Companii Worldwide Esri, promovand in Romania politica si produsele Esri.Get price

Gas Insulated Switchgear - GE Grid Solutions

XD|GE provides Gas Insulated Switchgear (GIS) solutions for high to ultra . high-voltage power transmission and distribution networks. We offer a highly reliable, compact GIS that lowers installation space. and reduces maintenance requirements. Designed with light-weight, durable aluminum enclosures, total load on the foundation and buildingGet price

GIS Substation (Sein Pann Myaing) – RJE

Completed GIS substation in Yangon, Myanmar. RJE provided the below turnkey services to operate and comply with the Yangon climate and relevant IEC standards: Detailed design, GIS foundation design drawing and detailed calculation, civil works, earthing system, sub-station layout, fencing, lighting, auxiliary services, cabling drawingsGet price

Gis substation - SlideShare

Jul 12, 2014 · Comparison of GIS and AIS substation 11. Drawbacks of GIS 12. Growth of GIS substation 13. Future trends in GIS 14. Conclusion Contents 3. Introduction and governing standard This presentation covers the technical requirements and design aspects of a gas-insulated substation (GIS) as per governing standards of GIS substations.Get price

Medium Voltage blue GIS | Systems | Siemens Global

8DJH 12 – blue GIS for sustainable substation BKK Nett AS in Bergen, one of the most innovative Utilities in Norway, had a clear goal for a new MV switchgear for distribution substation: A compact ring main unit that would operate more sustainably, reliably and economically and could work at very low operation temperatures.Get price

Gas-Insulated Substations - GIS

Nov 10, 2010 · A gas-insulated substation (GIS) uses a superior dielectric gas, Sulfr hexafluoride, at moderate pressure for phase-tophase and phase-to-ground insulation. The high voltage conductors, circuit breaker interrupters, switches, current transformers, and voltage transformers are in Sulfr hexafluoride gas inside grounded metal enclosures. The atmospheric air insulation used in a conventional, air-insulated substation (AIS) requires meters of air insulation to do what insulating gas can do in centimeters.Get price

Application of non-Sulfr hexafluoride gases or gas-mixtures in medium

IntroductionTopics Covered by The Working GroupConclusionsSince the introduction of Gas-Insulated Substations (GIS) in the late 1960s, sulphur hexafluoride (Sulfr hexafluoride) has become the favourite insulating and arc quenching medium thanks to its remarkable characteristics. However, gaz sf6 has the major drawback of presenting a global warming potential (GWP) if released to the atmosphere, which is 23,500 times higher than CO2 and a lifetime in the atmosphere of around 3200 years according to IPCC Assessment Report 5 (AR5) from 2014. Due to these properties, it is one of the six gases listed in the Kyoto Protocol in 1997. However, for context, it is important to note that todaycontribution of insulating gasto global warming emissions is relatively small. At the beginning of this century, manufacturers and universities have further intensified the research for a replacement of sf6 gas as insulation, switching and current interruption medium. Recent developments show applications of non-sf6 gas gases and gas-mixtures in medium and high voltage switchgear, and pilot appli...Get price

Gas insulated substation (GIS) versus Air insulated

Oct 28, 2020 · Gas insulated substation (GIS) design. The metal-enclosed gas insulated switchgear inherently follows the criteria for new substation design and offers a higher reliability and flexibility than other solutions. Due to the gas enclosed design, GIS is the most suitable solution for indoor and underground substations.Get price

The history of gas-insulated substations - Think Grid

Jun 13, 2012 · Meanwhile, GEC in England was collaborating with Siemens, and their first GIS was a 145 kV substation in London in 1982. As GIS systems developed and their extensive use in HV networks grew, Grid Solutions became the manufacturer of complete GIS ranges of 72.5-800 kV in which single-phase and three-phase encapsulation was and continues to be used.Get price

CIGRE Position Paper on the Application of SF in Transmission

, 50% air – gaz sf6 mixture and pure air vs. pressure (Insulating Materials for Design and Engineering Practice, N.Y. [1962], p. 116, [2]) Figure 2 - 220kV GIS for TRANSELECTRICA, BRAZI VEST substation, Romania. 550kV hybrid-type gas circuit breaker for CEPCO Seibu substation, Japan. 245kV Gas Voltage transformerGet price

Reference Ardnacrusha Gis Substation in Ireland

A refurbishment project was undertaken by ESB Networks in 2015 to replace the aging outdoor air-insulated substation (AIS) to an indoor gas-insulated switchgear (GIS). Hitachi ABB Power Grids designed, installed and commissioned 18 bays of 145 kV GIS type ELK-04 that offered a compact footprint with minimized environmental impact due to its modular design.Get price

gis substation Tender News | Latest gis substation Tender Notice

Tender For Design, Construction, Testing, Commissioning of 33 11kV, 2 10 MVA Substation and associated works for shifting of Ram Mandir Substation Under Smart City Area Based Development on Engineering, Procurement and Construction EPC Basis View Tender Detail : 1932717210519: 19-May-2021: 15-Jun-2021Get price

An Overview on GIS (Gas Insulated Substation) Engineering

GIS substations use Sulfr hexafluoride gas that reduces the distance needed between active and non-active switchgear parts resulting in smaller overall space requirements (ideal for congested city areas). GIS substations also offer lower operating and maintenance costs; and are less sensitive to pollution, salt, sand and large amounts of snow.Get price

High-voltage substations | High-voltage – Power transmission

Infrastructure facilities, industry, and private households around the world require more and more electrical energy High-voltage substations, the node points of today’s complex power transmission infrastructure, play a key role in meeting this demand safely and reliably.Get price

Gis substation Manufacturers Suppliers, China gis

gis substation manufacturer/supplier, China gis substation manufacturer factory list, find qualified Chinese gis substation manufacturers, suppliers, factories, exporters wholesalers quickly on Made-in-China.com.Get price

g3 - insulating gas Free Solutions

SF 6 insulating gas (or Sulphur Hexafluoride) had been the standard gas used inside high voltage electrical equipment as an insulating and arc-quenching medium. However, SF 6 sf 6 is also listed as an extremely potent greenhouse gas according to the Kyoto protocol, with 23,500 times the comparative Global Warming Potential of CO 2 and a lifetime of 3,200 years in the atmosphere.Get price

Hitachi ABB Power Grids and GE Agreement on Alternative Gas

Apr 22, 2021 · Hitachi ABB Power Grids has commissioned the world’s first high-voltage and medium-voltage gas-insulated switchgear (GIS) installation with a new eco-efficient gas mixture as an alternative to sulfur hexafluoride (SF 6) gas for ewz, a power utility in Switzerland. The 170/24 kV substation deploys the first breakthrough GIS with an eco-efficient gas mixture with a global warming potential (GWP) of less than 1 as an alternative to SF 6 gas.Get price

Construction and Service Life of GIS Substation - An

May 25, 2019 · GIS is assembled of standard equipment modules (circuit breaker, current transformers, voltage transformers, disconnect and ground switches, interconnecting bus, surge arresters, and connections to the rest of the electric power system) to match the electrical one-line diagram of the substation.Get price

Substations | PGESCo

Substations implemented by PGESCo. The following substations have been implemented under supervision of PGESCo. The scope encompasses technical specifications, tendering, evaluation of offers, material procurement from successful bidders, contractors’ technical submittals review and finally construction management.Get price

www.siemens.com/energy High Voltage Circuit Breakers: Trends

1200 kV AC substations:Full-scale products and integrated solutions 19 Circuit-Breaker Platform for 550 kV 27 Siemens High-Voltage Circuit-Breakers for Use at Low Temperatures 34 3AP4/5 High-Voltage Circuit-Breaker for 800 kV 41 Disconnecting Circuit-Breakers (DCB) 45 Disconnectors and Earthing switches for 800 kV DC substations 51 ComponentsGet price

Reference EWZ Oerlikon Substation Switzerland

The 170/24 kV substation deploys the first breakthrough GIS with an eco-efficient gas mixture with a global warming potential (GWP)* of less than 1 as an alternative to Sulfr hexafluoride gas. Located in the heart of Zurich, 15 meters underground in a beautifully designed building, it replaces an outdoor air-insulated switchgear (AIS) substation built-in 1949.Get price

ABB commissions world’s first switchgear installation with

Aug 24, 2015 · Global warming potential (GWP) (1) of new gas mixture is almost 100 percent lower than GWP of sf 6. New technology frees up about 70 percent of the 5000 m 2 space occupied by the old substation. ABB, the leading power and automation technology group, has achieved a significant breakthrough in gas insulated switchgear (GIS) technology by commissioning the worldfirst high- and medium-voltage GIS bays with a new eco-efficient gas mixture as an alternative to the widely used greenhouse gas SF₆.Get price

TWO VIRTUAL CONFERENCES ON TRANSMISSION LINES TOWERS AND

GIS variants like hybrid substations and vertical GIS substations have also come up in recent years. New environment-friendly insulation mixtures are also being developed to address the environmental concerns related to the use of Sulfr hexafluoride in GIS.Get price

Invitation – CMDM2021 - CMDM2021 – CMDM2021

For the Conference Brochure please click here. Introduction. The CIGRE’s Romanian National Committee, as organizer and CNTEE Transelectrica (the Romanian TSO), as co-organizer, would like to take this opportunity to invite to register for the International Conference on Condition Monitoring, Diagnosis and Maintenance – CMDM 2021 (6th edition). that will take place in Bucharest, Romania, onGet price

Development Sf6 Alternative Gases in Switchgears - Switchgear

Nov 23, 2019 · Sf6 gas is widely used in electric power transmission and distribution systems, as for example in gas insulated switchgear (GIS), circuit breakers (CB) and load break switches. It combines unique electrical insulation and arc interruption capability. However, it is also a very strong greenhouse gas with a global warming potential (GWP) of about 23500 over …Get price

(PDF) Internship Report | Rajat Agrawal - Academia.edu

Overview of 400/220 kV GIS Substation 6 Brief about the project 31 Single line diagram 35 Introduction to GIS 36 Advantages of GIS 37 3. Components of Substation 39 4. Introduction to SCADA 78 5.Get price

ABB celebrates 50 years of pioneering gas insulated

Apr 23, 2018 · Substations are no longer taking up acres of open spaces but can hide within buildings, under-ground or on rooftops. Prior to the advent of GIS, air-insulated switchgear (AIS) was the norm, using air as the insulation medium. This meant more exposure to the elements of nature and required more space and safety considerations.Get price

EU Report Highlights Sulphur Hexafluoride Countdown

Nov 02, 2020 · GIS using a Novec 4710, CO2 and O2 mixture was first installed in a 145kV GIS in 2017, and is now used at 15 sites with a total of 100 bays. 72.5kV and 145kV GIS using synthetic air as insulating media together with vacuum interrupter for circuit-breaking have been available since 2016.Get price