ENVIRONMENTAL PROTECTION AND DEVELOPMENT TREND OF HIGH VOLTAGE ELECTRICAL APPLIANCES MANUFACTURERS
miniaturization of GIS as good as non SF6 technology, Mitsubishi Electric Co., Ltd. to SF6 gas as good as thick movie dielectric coated electrode combination insulation complement as an intent to investigate a insulating properties of tall vigour areas. By regulating thick movie dielectric coated together, can grasp quell a distance of a steel electrode outcome caused by a relapse electric margin decline; can revoke a electrode space, a largest gas field, to grasp device miniaturization. As distant as probable a tall grade of integration, blueprint as good as stretchable combination electrical appliances or HGIS.
3, building low vigour of a SF6 switchgear as good as SF6 gas rebate of electrical equipment. Countries in a universe has been investigate alternatives to SF6 gas for most years abroad upon a accumulation of churned gases (such as SF6 N2, SF6 CO2, SF6 CF4) in a PD characteristics of insulation relapse characteristics of a investigate found which for a liquefaction temperatures were quite low, non poisonous as good as fast N2 gas, churned with 20% of a SF6 gas as good as a non unvaried electric margin in a prejudiced liberate starting voltage (PDIV) as good as dielectric relapse voltage (BDV) has increasing a probability of, and, additionally found in tall gas pressure, can get 100% SF6 gas with rounded off a same insulating properties. So SF6 N2 is deliberate a elite pick to SF6 gas. At present, a world’s initial hybrid gas insulated tall voltage lines N2 SF6 in Geneva completed. ABB has grown LTB 72.5 kV a 145kV GCB as good as HPL72.5 300B1 sort GCB can be used possibly pristine SF6 gas can additionally be used SF6 N2 gas mixture. When regulating SF6 N2 churned gas, during twenty ? Rated air vigour 0.7MPa (absolute), it can be used in 50 ?, whilst in pristine SF6 gas 0.5MPa (absolute), a usually for 40 ?. Toshiba additionally N2 SF6 churned gas circuit breaker is studied.
4, in a apparatus production as good as apparatus upkeep during a make make make make use of of of of of modernized SF6 gas liberation unit, a liberation by a accumulation of filters to mislay a SF6 gas in a water, oils, dust, as good as alternative elements following decomposition. Achieve SF6 gas recycling.
5, in a middle voltage (12kV 40.5kV) areas, make make make make use of of of of of non electrical SF6 as good as opening switchgear, tall voltage (40.5kV ~ 252kV) fields to a special tall voltage (800kV 1100kV) areas, to rise a opening circuit breaker (VCB), to ascent record as good as apparatus to revoke production costs VCB, opening switchgear to grasp a vast series of tall vigour area so which active rejecting opening circuit breaker (VCB) of tall voltage oriented investigate work, to grasp tall voltage of VCB as good as EHV oriented.
6, insurance of windy environment, as good as encourage recognition of glimmer reduction. Japan is a make make make make use of of of of of SF6 gas some-more countries, in sequence to exercise a “Kyoto Protocol” upon SF6 gas glimmer rebate obligations, NEC Business Association, a Japanese electric attention to grasp this idea will be taken certain action. Japan SF6 gas rebate measures is to settle a check quell emissions, to reinstate SF6 gas insulated apparatus quell emissions, recycling system, as good as has taken movement to urge a SF6 gas government system. Germany’s tall voltage switching apparatus attention is additionally really good developed. Annual make make make make use of of of of of SF6 gas is about 1000t. In sequence to grasp rebate of SF6 gas glimmer targets, Oct 19, 2005, a energy to run attention as good as electrical apparatus production attention associations as good as Solvay Fluor GmbH (SF6 gas manufacturing) companies as good as a German Environment, Nature Conservation as good as Nuclear Reactor Safety for serve supplies of a Federal Ministry of have reached a accord upon their own obligations.
7, to lift out a Clean Development Mechanism (CDM), to grasp rebate of SF6 gas.
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