TH31416A - Synchronous compensator system - Google Patents

Abstract

DC60 (20/08/40) The magnetic circuit of the synchronous compensator system is incorporated into the electromechanical unit, which is directly connected to a high-voltage supply voltage of 20-800 kV. Ideally, for voltages above 36 kV, this electromechanical unit is provided with solid insulation, and the coil set of this electromechanical unit is constructed from high-voltage cables (6) consisting of one or more current-carrying conductors (31) with numerous strains (36) surrounded by at least one outer semiconductor layer (34, 32) and at least one inner semiconductor layer (33) and a middle semiconductor layer (34). The outer semiconductor layer is at ground potential. The phase of the coil set is connected in a Y connection, and the Y point may be insulated and protected from overvoltage by the means of surge traps, or otherwise this Y point is grounded through a filtering circuit for suppression. The manufacturing process of the synchronous compensator is performed as follows: For such a system, in which the cable is wound into the openings in the core for the magnetic circuit of the synchronous compensator, the magnetic circuit of the synchronous compensator system is integrated into the electromechanical unit, which is directly connected to a high supply voltage of 20-300 kV, preferably higher than 36 kV. The electromechanical unit is provided with solid insulation, and the windings of this unit are constructed from high-voltage cables (6) consisting of one or more current-carrying conductors (31) with numerous streaks (36) surrounded by at least one outer semiconductor layer (31,32) and at least one inner semiconductor layer (33) and a middle semiconductor layer (34). The outer semiconductor layer is at ground potential. The phases of the windings are connected in a Y configuration, and the Y point may be insulated and protected from overvoltage by surge traps or otherwise grounded through a filtering circuit for suppression. The manufacturing process of synchronous compensation for such systems will involve threading the cable through openings in the core for the magnetic circuit of the synchronous compensation.

Claims (16)

1. A synchronous compensating system, consisting of at least one rotating electromechanical machine with at least one set of windings, which is characterized in such that the windings in at least one electromechanical machine consist of an insulating system that includes at least two layers of semiconductor material, each layer forming a material that is essentially a constant potential surface, and likewise includes a solid insulator placed between them. 2. The system is entitled to claim 1, which is characterized by the fact that at least one layer of these layers has the same coefficient of thermal expansion as this solid insulation. 3. The system is entitled to either claim 1 or 2, which is made up to be of the special characteristic that the insulation making up the cable (6) is made for high voltage and consists of one or more current-carrying conductors (31) surrounded by at least one semiconductor layer (32,34) with an insulating (33) solid insulating layer. 4. The system is entitled to claim 3, which is made special in that the innermost semiconductor layer (32) is essentially identical in potential to the conductor (31). 5. The system is entitled to one of the claims in clause 3 or 4, which is made to have the special characteristic that one layer of the outer semiconductor layer (34) is arranged to 6. The system hereby asserts the rights under claim 5, which has been made to have the following special characteristics: 7. The system holds the rights under claim 6, which has been made to have the following special characteristics: 8. The system is entitled to one of the claims, which is characterized by the fact that at least two of such layers shall have significantly identical coefficients of thermal expansion. 9. The system is entitled to any one of claims 3 through 5, which is made to have the special characteristic that the electric current-carrying conductor consists of many strands, of which only a few of these strands are uninsulated from one another. 10. The system is entitled to any one of the claims 1 through 9, which is made to have the following characteristics: the coil assembly shall consist of a cable consisting of one or more current-carrying conductors (2) in which each conductor shall consist of several strands; an inner semiconductor layer (3) which is arranged around each conductor; a solid insulating layer (4) which is arranged around each inner semiconductor layer (3) and an outer semiconductor layer (5) which is arranged around each insulating layer (4). 11. The system is entitled to the claim in Article 10, which is made special in that this cable also consists of a metal shield and an outer sheath. 12. The system shall be entitled to any one of the claims 1 through 11, which is made to have the special characteristic that the magnetic circuits are placed in a rotating machine in which the stator (3) of this machine is cooled at the ground potential. 13. The system shall be entitled to any one of the claims 1 through 12, which is made to have the following characteristics: the magnetic circuit of the electric machine shall consist of a set of stator windings arranged in grooves (5). Such grooves (5) shall be designed as a number of cylindrical openings (7) separated in a manner as follows: 14. The system claims the rights under claim 13, which has been made special in that the phases of the stator windings are connected. 15. The system is entitled to claim 14, which is made special in that the Y point of the coil assembly is insulated from earth potential or connected to earth potential via a high ohm infinity and protected from overvoltage by a herge trap. 16. The system is entitled to claim 14, which is made special in that the Y point of the stator windings is grounded through a filter circuit for (Clause 16, 6 pages, 3 figures).