Installation and method for distributing a gaseous dielectric mixture to a gas insulated electrical system
AssigneeAir Liquide Electronics Systems
InventorsFrédéric Loray, Vanina Todorova, Hervé Dulphy
Life of this patent
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Abstract
The invention relates to an installation for distributing a gaseous electrically insulating mixture comprising a first vessel (1) intended to contain an insulating fluid in the liquid state, first heating means (10) configured to heat the insulating fluid so that said first vessel (1) produces a gas phase of the insulating fluid, a second vessel (2) configured to produce a gas phase of a carrier fluid from the second vessel (2), a first transfer circuit (6), and second heating means (21, 22) configured to heat the gas phase of the insulating fluid.
Claims16
An installation for distributing an electrically insulating gas mixture to a gas insulated electrical system, in particular a high-voltage electrical system, said installation comprising:
- a first vessel (1) intended to contain an insulating fluid in the liquid or liquefied state,
- a first heater (10) configured to heat the insulating fluid in the first vessel (1) such that said first vessel (1) produces, at a first outlet, a gas phase of the insulating fluid,
- a second vessel (2) intended to contain a carrier fluid and configured to produce a gas phase of the carrier fluid at a second outlet of the second vessel (2),
- a first transfer circuit (6) configured to transfer the gas phase of the insulating fluid from the first outlet of the first vessel (1) to a combination point (60), the first transfer circuit (6) comprising a first upstream part (6a) connected to the first vessel (1) and a first downstream part (6b) connected on the one hand to the first upstream part (6a) and on the other hand to the combination point (60),
- a second transfer circuit (7) configured to transfer the gas phase of the carrier fluid from the second outlet of the second vessel (2) to the combination point (60),
- a distribution circuit (8) fluidically connected to the combination point (60) and configured to distribute an electrically insulating gas mixture comprising the gas phase of the insulating fluid and the gas phase of the carrier fluid to the electrical system,
- the first downstream part (6b) of the first transfer circuit (6) comprising a first flow regulator device (61) configured to regulate and/or adjust the gas phase flow rate of the gas phase of the insulating fluid flowing toward the combination point (60),
- said installation further comprising a second heater (21, 22) configured to heat the gas phase of the insulating fluid at least at the combination point (60) and in the downstream part (6b) of the first transfer circuit (6).
A method for distributing an electrically insulating gas mixture to a high-voltage electrical system, said method comprising the following steps:
- a) heating an insulating fluid in the liquid or liquefied state in a first vessel (1) by first heater (10) so as to vaporize at least part of the liquefied insulating fluid and to produce a gas phase of the insulating fluid in the first vessel (1),
- b) passing the gas phase of the insulating fluid through a first transfer circuit (6) so as to transfer the gas phase of the insulating fluid from the first vessel (1) to a combination point (60), the first transfer circuit (6) comprising a first upstream part (6a) connected to the first vessel (1) and a first downstream part (6b) connected on the one hand to the first upstream part (6a) and on the other hand to the combination point (60),
- c) regulating and/or adjusting the gas phase flow rate of the insulating fluid flowing toward the combination point (60) by means of a first flow regulator device (61) arranged on the first downstream part of the first transfer circuit (6),
- d) passing a gas phase of a carrier fluid from a second vessel (2) through a second transfer circuit (7) so as to transfer the gas phase of the carrier fluid to the combination point (60),
- e) combining the gas phase of the insulating fluid and the gas phase of the carrier fluid at the combination point (60) and passing the gas phase of the insulating fluid and the gas phase of the carrier fluid combined through a distribution circuit (8) adapted to distribute to the high-voltage electrical system an electrically insulating gas mixture comprising the gas phase of the insulating fluid and the gas phase of the carrier fluid,
- f) heating the gas phase of the insulating fluid at least at the combination point (60) and in the downstream part (6b) of the first transfer circuit (6).
Dependencies are inferred from the claim text.