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Power system active scheduling method and system for coping with ice disasters

A technology of power system and dispatching method, applied to the active dispatching method and system field of the power system to deal with ice disasters, can solve the problems of insufficient foresight, lack of disaster failure probability and active dispatching of power grids in the future recovery strategy, to reduce the threat , good forward-looking, and the effect of improving the ability to resist ice disasters

Pending Publication Date: 2021-01-26
STATE GRID HUNAN ELECTRIC POWER +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides an active dispatching method and system of the power system in response to ice disasters, which is used to solve the problem that the existing system response strategy is executed after a fault occurs, so the current dispatching method under the catastrophe of the power grid is not forward-looking enough, and it lacks the ability to simultaneously consider Technical Issues of Power Grid Active Dispatching under Disaster Failure Probability and Future Time Restoration Strategy

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  • Power system active scheduling method and system for coping with ice disasters
  • Power system active scheduling method and system for coping with ice disasters
  • Power system active scheduling method and system for coping with ice disasters

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Embodiment 2

[0101] The specific implementation process of this embodiment is as follows:

[0102] The model of the present invention is verified and calculated by using IEEE RTS-79 system data for example analysis. The test system contains 24 nodes and 38 transmission lines. It is assumed that all nodes and transmission lines in the system are exposed to the open air.

[0103] Use the network grid method to divide the area where the system is located into 1600×1800 grids. Assuming that the grid is small enough, the node position can be represented by the coordinates of the grid where it is located, and each grid is set to represent a geographical area of ​​0.5km×0.5km , the impact radius of the ice disaster is 100km, the moving speed of the center of the ice disaster is 50km / h, the maximum wind speed and precipitation are 12m / s and 35mm / h. The system design maximum anti-ice thickness M is 10mm. The center of the ice disaster trajectory moves from the starting coordinates (230,440) to t...

Embodiment 3

[0115] This embodiment provides a computer system, including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, the steps of the foregoing embodiments are implemented.

[0116] In summary, the present invention can be used for real-time scheduling of the power system during ice disasters, which has the effect of reducing load reduction and good foresight, and provides a reference for the scheduling of power systems under natural disasters.

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Abstract

The invention discloses a power system active scheduling method and system for coping with ice disasters, and the method comprises the steps: firstly quantifying the impact on the fault probability ofan element from the ice disasters, then abstracting the topological state transition of a system into a Markov chain during the ice disasters, and completing the analysis of the impact on a power system from the ice disasters through a network rasterized system model; establishing an active scheduling model based on a semi-Markov decision process, considering a recovery process of an element, andscheduling the power flow of the system again in advance. The power system active scheduling strategy model for the ice disasters can calculate the influence degree of disasters on the electric powersystem from two aspects of time dimension and space dimension, reduce threats brought by disasters from the active scheduling level, and has good perspectivity and load reduction reduction reductionreduction effects.

Description

technical field [0001] The invention relates to the field of power system operation and scheduling, in particular to an active scheduling method and system for a power system dealing with ice disasters. Background technique [0002] Ice weather is an extreme natural disaster, which can easily lead to large-scale faults in the power system area where it passes through, specifically manifested as transmission line disconnection, insulator flashover, iron tower collapse, and line self-excited vibration. Line icing is a complex physical process in which water droplets in the atmosphere are supercooled in a low-temperature environment, and then are captured by transmission wires, insulators and other structures and freeze into ice. In ice disaster weather, the hazard factor of the power system can be characterized by the ice load of the line. At present, there are a lot of model studies on deriving ice loads based on historical meteorological data of ice disasters, but their gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06Q10/04G06Q10/06G06Q50/06G06N7/00G06F111/04G06F111/06G06F111/08
CPCG06F30/20G06Q10/04G06Q10/0631G06Q50/06G06F2111/04G06F2111/06G06F2111/08G06N7/01Y02A90/10
Inventor 郭俊徐勋建唐文虎陈星宇钱瞳
Owner STATE GRID HUNAN ELECTRIC POWER
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