Kawalwa na kisan haɗa daga gas insulated switchgear na ƙarfin tsari

Tsunfe da kula tsakanin gas na SF6 daga high-voltage gas-insulated switchgear yana cikin tarihin haka. A kan, za a iya samun bayanai masu muhimmanci game da maimakon labarin gas na SF6 a cikin high-voltage switchgear. Emissions na gas na Sulphur Hexafluoride (SF6) daga zafi mai zama suna yi abin da ba a gaba ba a cikin kokarin kawo karshen gas na greenhouse. Wannan ya faru saboda impact na gas na SF6 a cikin global warming yana da muhimmanci. Gas na SF6 yana da zamanin 3,200 shekara a cikin atmosphere, kuma Global Warming Potential (GWP) ta shi ce 23,900 (meaning that the impact of 1 kg of SF6 is equivalent to that of 23,900 kg of CO2).A shekarar 2000, emissions na SF6 daga production na medium- and high-voltage (HV) electrical transmission and distribution equipment suna da muhimmanci a kan 10 Mt CO2-eq, musamman a kan Turai da Japan.

Emissions na Gas na SF6 a cikin Atmosphere da Masu Karfin Tsaro su

A tarihin zuwa duniya na net-zero, ana sanin cewa industry na power ta shahara da tashin mutanen da suka faru, tun daga power generation na hydrocarbon zuwa renewable da green energy sources. Amma, wani batu na da shawarar da ba a tabbatar da shi ba shi ne cewa control na environmental risk na wasu a cikin industry.

Daga lokacin 1950s, Sulfur hexafluoride (SF6) an yi amfani da shi a matsayin insulating and arc-quenching medium a cikin high-voltage switchgear. Saboda nature na inert da properties na arc-quenching, an yi amfani da shi a cikin switchgear. Kuma, composition na chemical na SF6 ta shi da shirin a matsayin wasu amfani. Misali, a cikin medical field, an yi amfani da shi a matsayin contrast agent a cikin ultrasound imaging; a cikin double glazing, an yi amfani da shi a matsayin thermal and acoustic insulating medium; kuma lokacin, an yi amfani da shi a matsayin "air" filler a cikin sole na brand na sports shoes.

Daga lokacin adoption na Kyoto Protocol a shekarar 1997, ana yi amfani da efforts don limmita amfani da emissions na SF6. A shekaru da suka wuce, progress na yawan lafiya ta shahara a cikin electrical transmission industry a cikin developing alternative equipment and insulating media.

Dry-air insulation yana da amfani a voltages na 420 kV a cikin non-switching gas-insulated busbars (GIB), kuma vacuum interrupters an yi amfani don voltages na 145 kV. Duk da haka, alternative gas technologies kamar g3 (g-cubed) zai iya amfani a voltages na 420 kV a cikin non-switching gas-insulated busbars (GIB). Alternate gas circuit breakers suna da amfani a voltages na 145 kV, kuma ana rawa cewa scalable 245 kV g3 circuit breakers zai da amfani a shekarar 2025.

Amma, idan a nemi operational lifespan na high-voltage GIS, wanda yana da 25 shekara ko daidai, da kuma wani abu cewa kowace high-voltage GIS suna da SF6, environmental impact na SF6 yana da shawarar da ke da shi a matsayin batu na da shawarar da ba a tabbatar da shi ba shi. Duk da haka, with the progress in extending equipment lifespan through predictive maintenance, environmental cost na replacement yana da shawarar da ke da shi. Gas leak a cikin zafi mai lafiya ba shi da shawarar da ke da shi ba shi cewa replacement yana da shawarar da ke da shi.

Gas Leakage na SF6 a cikin GIS Systems da Hanyoyin Prevention

Gas leaks a cikin high-voltage GIS suna faru saboda wasu abubuwa, tare da manufacturing defects, design flaws, impact na weather a cikin outdoor equipment, incorrect installation, da kuma aging na gaskets and seals. Saboda nature na critical na many substations, ability na shutdown na equipment don repair yana da shawarar da ke da shi. Wannan zai iya haɗa zuwa continuous need don top up leaking gas zones, resulting in a constant equivalent emission na SF6 gas a cikin atmosphere.

A cikin many regions worldwide, governments and regulators ba suka yi severe penalties for such emissions kuma suke yi incentives for managed reduction. Saboda haka, akwai talabawa don effective solution to gas leaks wanda zai iya kula SF6 emissions from aging equipment, bane da ingantaccen OEM approach na shutdown, degassing, dismantling, and repair.

A shekaru da suka wuce, several methods suna yi amfani, amma ba da nasarori. Wasu methods suna yi reduce rather than completely solve leak problem kuma zai iya restrict future access to affected components.

1. Adhesive Coatings or Industrial Wraps: Idan a yi amfani a cikin leaking area under pressure, adhesive coatings or industrial wraps ba su iya kula leaks. Ba tare da reduction a gas pressure and associated operational disruption during installation and curing, success rate ba shi da nasarori.

2. Epoxy Encasings: Epoxy encasings zai iya redirect leak during curing process, successfully avoiding problem na first method and stopping leak. Amma, limitations na method include being generally restricted to flange locations. Kuma, finished product solidifies onto equipment, restricting future access if necessary. Removal yana da shawarar da ke da shi, and extreme caution must be exercised to avoid damaging encased flange and bolts during process.

Method to Prevent SF6 Gas Leaks and Emissions

MG Eco Solutions (Master Grid Group) ta shahara da system na unique wanda ta shahara da major limitations na operational disruption, restricted leak-location application, and inconsistent success rates. System na wannan ta shahara a harsh environment na French coastal nuclear power stations and has also proven effective in tropical climates.

A Photo 1, za a iya samun MG Eco Solutions' Sleakbag collection system for high-voltage gas-insulated switchgear.

Through meticulous reverse-engineering process, MG Eco Solutions has capability to design and manufacture containment systems tailored to address gas leaks in nearly any location on any brand of Gas-Insulated Switchgear (GIS).

Solution na company combines novel gas-tight polymer seal and O-ring. Instead of attempting to plug leak directly or fill void with resin, it contains gas leak within system. Containment system can be regarded as permanent fix. But, it is also removable when access to equipment becomes necessary, and some components are designed to be reusable in other applications.

What further enhances versatility of MG Eco Solutions is its ability to offer collection system in situations where permanent containment system is unfeasible, such as in case of leaking bursting disc or bellows unit. Solution adheres to same reverse-engineering principle to ensure precise fit with leaking equipment. Instead of containing leak under working pressure, gas is diverted through pipes to collection system, thus preventing harmful SF6 emissions from entering atmosphere.

Power industry's long-term aspiration towards net-zero world is complete phasing-out of SF6-filled equipment. Achieving this goal demands time, substantial investment, and continuous progress in alternative technologies. In interim, effectively managing extensive existing installed base of GIS and implementing containment and collection measures for SF6 gas leaks represent crucial contributions to overarching objective.