Water and contamination absorber for c02 insulated electrical apparatus for the generation, transmission, distribution and/or usage of electrical energy

Electrical apparatus for the generation, transmission, distribution and/or usage of electrical energy, said electrical apparatus comprising

• a housing enclosing an electrical apparatus interior space, at least a portion of the electrical apparatus interior space forming at least one insulation space, in which an electrical component is arranged and which contains an insulation medium surrounding the electrical component, the insulation medium comprising carbon dioxide,
• the insulation space comprising at least one insulation space compartment, in which an adsorber for reducing or eliminating an amount of water and further contaminants from the insulation medium is arranged,
• wherein mads complies with the following formula (II):
• m
• ads
• ≤
• 0.1
• 
• m
• CO
• 2
• k
• ads
• ,
• CO
• 2
• (
• II
• )
• with
• mCO2 being the amount of carbon dioxide present in the respective insulation space compartment at the time when placing the adsorber into the insulation space compartment;
• and
• kads,CO2 being the adsorption capability of the adsorber towards carbon dioxide at the predetermined temperature T0 at the time when placing the adsorber into the insulation space compartment, and
• wherein the insulation medium additionally comprises an organofluorine compound, and the amount of adsorber mads arranged in the at least one insulation space compartment, in particular in each insulation space compartment, complies with the following formula (Ii):
• m
• ads
• ≥
• m
• H
• 2
• 
• O
• k
• ads
• ,
• H
• 2
• 
• O
• +
• ∑
• i
• =
• 1
• n
• 
• 
• m
• dp
• i
• k
• ads
• ,
• dp
• i
• (
• Ii
• )
• with
• mH2O being the amount of water present in the respective insulation space compartment at the time when placing the adsorber into the insulation space compartment,
• kads,H2O being the adsorption capability of the adsorber towards water at a predetermined temperature T0 at the time when placing the adsorber into the insulation space compartment,
• mdpi being the amount of a respective decomposition product dp1, dp2, . . . dpn created in and/or released into the respective insulation space compartment between gas maintenance or gas replacement intervals, with i being an index for the i-th decomposition product, and
• kads,dpi being the adsorption capability of the adsorber towards the respective i-th decomposition product dp1, dp2, . . . dpn at the predetermined temperature T0, and
• at least one decomposition product is a decomposition product of the organofluorine compound.

Electrical apparatus for the generation, transmission, distribution and/or usage of electrical energy, the electrical apparatus comprising:

• a housing enclosing an electrical apparatus interior space, at least a portion of the electrical apparatus interior space forming at least one insulation space, in which an electrical component is arranged and which contains an insulation medium surrounding the electrical component, the insulation medium comprising carbon dioxide,
• the insulation space comprising at least one insulation space compartment, in which an adsorber for reducing or eliminating an amount of water and an amount of further contaminants from the insulation medium is arranged,
• wherein the at least one insulation space compartment comprises a volume-specific amount of less than 5 kg adsorber per cubic meter of the volume of the insulation space compartment,
• wherein the insulation medium additionally comprises an organofluorine compound, and the amount of adsorber mads arranged in the at least one insulation space compartment complies with the following formula (Ii):
• m
• ads
• ≥
• m
• H
• 2
• 
• O
• k
• ads
• ,
• H
• 2
• 
• O
• +
• ∑
• i
• =
• 1
• n
• 
• 
• m
• dp
• i
• k
• ads
• ,
• dp
• i
• (
• Ii
• )
• with
• mH2O being the amount of water present in the respective insulation space compartment at the time when placing the adsorber into the insulation space compartment,
• kads,H2O being the adsorption capability of the adsorber towards water at a predetermined temperature T0 at the time when placing the adsorber into the insulation space compartment,
• mdpi being the amount of a respective decomposition product dp1, dp2, . . . dpn created in and/or released into the respective insulation space compartment between gas maintenance or gas replacement intervals, with i being an index for the i-nth decomposition product, and
• kads,dpi being the adsorption capability of the adsorber towards the respective i-th decomposition product dp1, dp2, . . . dpn at the predetermined temperature T0, and
• at least one decomposition product s a decomposition product of the organofluorine compound.

Method for determining an optimum amount of an adsorber for the adsorption of water and further contaminants in an electrical apparatus for the generation, transmission, distribution and/or usage of electrical energy, the electrical apparatus comprising a housing enclosing an electrical apparatus interior space, at least a portion of the electrical apparatus interior space forming at east one insulation space, in which an electrical component is arranged and which contains an insulation medium surrounding the electrical component, the insulation medium comprising carbon dioxide, the insulation space comprising at least one insulation space compartment, the method comprising:

• a) determining for the at least one insulation space compartment the amount of water mH2O present in the insulation space compartment at the time when placing the adsorber into the insulation space compartment;
• b) determining for the at least one insulation space compartment the amount of carbon dioxide mCO2 present in the insulation space compartment at the time when placing the adsorber into the insulation space compartment;
• wherein the insulation medium additionally comprises an organofluorine compound,
• c) determining for the at least one insulation space compartment the lower limit of the amount of adsorber mads by formula (Ii):
• m
• ads
• ≥
• m
• H
• 2
• 
• O
• k
• ads
• ,
• H
• 2
• 
• O
• +
• ∑
• i
• =
• 1
• n
• 
• 
• m
• dp
• i
• k
• ads
• ,
• dp
• i
• (
• Ii
• )
• with
• kads,H2O being the adsorption capability of the adsorber towards water at a predetermined temperature T0 or at a first predetermined temperature T1 at the time when placing the adsorber into the insulation space compartment,
• mdpi being the amount of a respective decomposition product dp1, dp2, . . . dpn created in and/or released into the respective insulation space compartment between gas maintenance or gas replacement intervals, with i being an index for the i-th decomposition product, and
• kads,dpi being the adsorption capability of the adsorber towards the respective i-th decomposition product dp1, dp2, . . . dpn at the predetermined temperature T0 or at the first predetermined temperature T1, with
• at least one decomposition product being a decomposition product of the organofluorine compound, and
• d) determining for the at least one insulation space compartment the upper limit of the amount of adsorber mads by formula (II)
• m
• ads
• ≤
• 0.1
• 
• m
• CO
• 2
• k
• ads
• ,
• CO
• 2
• (
• II
• )
• with
• kads,CO2 being the adsorption capability of the adsorber towards carbon dioxide at the predetermined temperature T0 or at a second predetermined temperature T2 at the time when placing the adsorber into the insulation space compartment.