Power flow control

A technology of power flow and controller, which is applied in the direction of reactive power adjustment/elimination/compensation, reactive power compensation, and AC network with the same frequency from different sources, etc. It can solve problems such as material degradation and electrical breakdown of insulation, etc. Achieving a compact coil end area

Inactive Publication Date: 2001-01-10
ABB (SCHWEIZ) AG
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  • Abstract
  • Description
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Problems solved by technology

These corona discharges progressively degrade the material and can cause electrical breakdown of the insulation

Method used

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Embodiment Construction

[0073] DESCRIPTION OF THE PREFERRED EMBODIMENT

[0074] Figure 8 shows the basic system of the invention. In the following part of the specification, for ease of understanding, a high voltage rotating "power converter device" refers to a high voltage rotating "synchronous" electric machine, although the rotating shaft of such a machine need not be in contact with the rotating stator magnetic field which gets its excitation from the power line Synchronized rotation.

[0075] Figure 10 Cables for the core windings used in the core (stator or rotor) of a "synchronous" electrical machine are shown. The cable has an inner conductor arrangement 41 surrounded by electrical insulation 42 . The electrical insulation 42 is integral, comprising an inner semiconducting layer 43, an outer semiconducting layer 44 and an insulating layer 45 sandwiched between these semiconducting layers. The insulation of at least one conductor in the conductor arrangement 41 , for example varnish insul...

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Abstract

A power transmission and / or distribution system including at least one power line (2) connecting two parts of the system and at least one high voltage rotating power converter means (3) connected in the system for controlling power flow in the system. The rotating power converter means (3) includes at least one winding having electrically conducting means (41) surrounded by electrically insulating means (42) comprising magnetically permeable solid material within which the electric field is confined in use of the power converter means. The at least one rotating power converter means (3) is connected directly, by a transformerless connection, to, or in series with, the at least one power line (2). The invention also relates to a power flow controller and to a method of controlling power flow between two power systems.

Description

technical field [0001] The invention relates to a power transmission and / or distribution system comprising at least one power line connecting two parts of the system and at least one rotating power converter device connected in the system for controlling the flow of power in the system. The invention also relates to a power flow controller comprising at least one high voltage rotating power converter, and to a method for controlling power flow between two power systems, especially in high voltage alternating current transmission using at least one high voltage rotating power converter and / or methods of controlling power flow in distribution systems. By way of example, rotary power converters can have power ratings from a few MVA to over 1000 MVA and operate at distribution (6-70kV) and transmission (70kV to 400-800kV, or higher) voltages from a few kV up to several hundred Insulation rated voltage (e.m.f.) in kV. Thus, the invention is suitable, for example, for series compe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/06H02J3/18H02K3/40H02K47/18
CPCH02K3/40Y02E40/32H02J3/1807H02K2203/15H02K47/18Y02E40/30H02J3/1885H02J3/06
Inventor L·格尔特马M·莱永
Owner ABB (SCHWEIZ) AG
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