Emergency scheduling method for reinforcing electric network transportation ability

A technology of transmission capacity and emergency dispatch, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as grid collapse

Inactive Publication Date: 2008-12-10
TSINGHUA UNIV +1
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  • Abstract
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Problems solved by technology

Among them, the static safety problem refers to the power limit of some lines after the failure of the fault concentration occurs, and the transient stability refers to t...

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  • Emergency scheduling method for reinforcing electric network transportation ability
  • Emergency scheduling method for reinforcing electric network transportation ability
  • Emergency scheduling method for reinforcing electric network transportation ability

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Embodiment Construction

[0052] An emergency dispatching method for enhancing the transmission capacity of the power grid proposed by the present invention, its specific implementation process, in conjunction with the accompanying drawings and embodiments, is described in detail as follows:

[0053] A kind of emergency dispatching method that the present invention proposes to strengthen the transmission capacity of power grid, comprises the following steps:

[0054] (1-1) Obtain the real-time operation mode of the power grid, and carry out online scanning of the limit transmission capacity of each power transmission section of the power grid. The online scanning of the limit transmission capacity of each power transmission section of the power grid in the present invention adopts the continuous power flow method, and comprehensively considers the power grid The static safety constraints and transient stability constraints. On the basis of obtaining the limit transmission capacity of the transmission s...

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Abstract

The invention relates to an emergency dispatching method of increasing the power grid transmission capacity, belonging to the electric power system dispatching automation field. Firstly, an extremity transfer capacity of a main transmission section of a power grid is scanned online, so as to gain a transmission margin; secondly, a load increment of future time is calculated via ultra-short term load forecasting to determine a total power generation adjustment quantity of the power grid of the future time; then, an output adjustment quantity of a generator of next period according to the number of the transmission section whose the transmission margin is less than a setting value and the difference of the kinds of restrictive factors of each transmission section, when the power grid is provided with: the transmission margin of one transmission section is less than the setting value and is a static security constraint; the transmission margins of a plurality of transmission sections are less than the setting value and are the static security constraint; the transmission margin of one transmission section is less than the setting value and is a transient stability constraint. The method of the invention can improve the transmission capacity of the transmission section when the transmission margin of the main transmission section of the power grid is insufficient, so as to reduce or avoid the phenomenon of the restriction of electricity.

Description

technical field [0001] The invention relates to an emergency dispatching method for enhancing the transmission capacity of a power grid, in particular to an emergency dispatching method for enhancing the transmission capacity of a power grid considering static security constraints and transient stability constraints, and belongs to the technical field of power system dispatching automation. Background technique [0002] In the power system, the load center (such as Beijing) is often far away from the power generation gathering area (such as Shanxi). At this time, it is often necessary to use a transmission section composed of multiple transmission lines to transmit power to the load center. The ultimate transmission capacity refers to the maximum power that can be transmitted by the transmission section under the condition of satisfying various security constraints of the power system, and it is an important indicator of the security of the power grid. In the actual power gr...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/46
Inventor 张伯明吴文传蒋维勇蔡斌吴素农孙宏斌万源
Owner TSINGHUA UNIV
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