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A method of providing power support to an electrical power grid

A power grid and electric power technology, applied in computer programs and computer program products to provide power support to the grid, can solve problems such as expensive solutions, and achieve stable and reliable operation

Active Publication Date: 2019-07-16
HITACHI ENERGY SWITZERLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

All these solutions are expensive as additional machines have to be purchased

Method used

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  • A method of providing power support to an electrical power grid
  • A method of providing power support to an electrical power grid
  • A method of providing power support to an electrical power grid

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Embodiment Construction

[0025] In the following description, for purposes of explanation and not limitation, specific details are set forth, such as specific architectures, interfaces, techniques, etc., in order to provide a thorough understanding. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description with unnecessary detail. Throughout the specification, the same reference numerals designate the same or similar elements.

[0026] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which certain embodiments of the invention are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and will The range fully conveys to those skilled in the art.

[0027] Vari...

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Abstract

A method (10) of providing power support to an electrical power grid (2) is provided. The power support is provided by an arrangement (3, 4) comprising a synchronous machine (4) connected to a converter (3), the converter (3) in turn being connected to the electrical power grid (2). The method (10) is performed in a control device (5) controlling the arrangement (3, 4) and comprises: receiving (11) feedback from one or both of the electrical power grid (2) and the synchronous machine (4), and controlling (12) the converter (3) such that power support is provided to or absorbed from the electrical power grid (2) by means of the synchronous machine (4) based on the received feedback. A control device (5), an arrangement (3, 4), a computer program and computer program products are also provided.

Description

technical field [0001] The technology disclosed herein relates generally to the field of power systems, and more particularly to methods, control devices, apparatus, computer programs and computer program products for providing power support to a grid. Background technique [0002] Renewable energy sources such as, for example, wind or solar power are replacing fossil fuels and nuclear energy sources for electricity production. In the case of wind power generation, wind turbines are typically coupled to the grid through power electronic converters such that the wind turbine generator can rotate at an angular velocity independent of the grid frequency. This is necessary because the wind speed varies significantly over the operating range of the wind turbine, thus causing the rotor speed to vary. [0003] The grid may experience grid voltage transients, some of which are affected by the inertia of rotating masses connected to the grid. For example, these rotating masses can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/30
CPCH02J3/30Y02E60/16H02J3/001H02H9/02H02M5/4585H02P9/105
Inventor J-P·哈斯勒J·基尔P·梅巴克
Owner HITACHI ENERGY SWITZERLAND AG
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